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Valorization of Cellulose Acetate Fibers in Mortars

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Sandrine Marceau, Othman Omikrine Metalssi, Teddy Fen-Chong

Identifiant HAL : HAL identifier : HAL identificar : hal-04802333

Références bibliographiques : References : Referencias : Joe Tannous, Thouraya Salem, Sandrine Marceau, Othman Omikrine Metalssi, Teddy Fen-Chong. Valorization of Cellulose Acetate Fibers in Mortars. 14th fib International PhD Symposium in Civil Engineering, Fédération Internationale du Béton, Sep 2022, Rome, Italy. ⟨hal-04802333⟩

Début de résumé : Short abstract : Breve resumen : Worldwide, a large quantity of cigarette butts is being released into the environment. The majority of this waste is formed from cellulose acetate (CA) fibers in filters with poor biodegradability and toxic chemicals. This paper presents a solution to recycle CA fibers in mortars. The objective is to characterize the CA and analyse its influence on mortars. Therefore, after characterizing CA fibers, tests are conducted on the fresh state such as slump test. The formulations are prepared based on preliminary workability tests where 0 wt% (standard mortar), 0.2 wt% and 1.3 wt% rates are chosen to replace sand by CA. Mechanical and shrinkage tests are achieved on the hardened mortars. Thermal conductivity and microstructural investigations (SEM, TGA) are performed to understand the previous results.

Résumé : Abstract : Resumen : Worldwide, a large quantity of cigarette butts is being released into the environment. The majority of this waste is formed from cellulose acetate (CA) fibers in filters with poor biodegradability and toxic chemicals. This paper presents a solution to recycle CA fibers in mortars. The objective is to characterize the CA and analyse its influence on mortars. Therefore, after characterizing CA fibers, tests are conducted on the fresh state such as slump test. The formulations are prepared based on preliminary workability tests where 0 wt% (standard mortar), 0.2 wt% and 1.3 wt% rates are chosen to replace sand by CA. Mechanical and shrinkage tests are achieved on the hardened mortars. Thermal conductivity and microstructural investigations (SEM, TGA) are performed to understand the previous results.

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Valorisation de déchets de polyuréthane dans des mortiers

Auteur(s) : Author(s) : Autor(es) : Danah Shehadeh, Thouraya Salem, Othmane Bouchenafa, Céline Florence

Identifiant HAL : HAL identifier : HAL identificar : hal-04206819

Références bibliographiques : References : Referencias : Danah Shehadeh, Thouraya Salem, Othmane Bouchenafa, Céline Florence. Valorisation de déchets de polyuréthane dans des mortiers. Academic Journal of Civil Engineering, 2022, 40 (1 Special Issue RUGC 2022), pp 88-91. ⟨10.26168/ajce.40.1.22⟩. ⟨hal-04206819⟩

DOI : 10.26168/ajce.40.1.22

Début de résumé : Short abstract : Breve resumen : La valorisation des déchets recyclables dans les matériaux cimentaires favorise l’écoconstruction. Elle permet d’éviter l’épuisement des ressources naturelles tout en donnant une nouvelle vie aux déchets recyclables qui se trouvent en grande quantité tel que le polyuréthane (PU). Ce travail étudie la faisabilité d’incorporation du PU sous forme de granulé (PUG) dans un mortier cimentaire. Les propriétés du mortier de PUG à l’état frais (teneur en air occlus, masse volumique, affaissement) et à l’état durci (résistance à la flexion et à la compression) sont comparées à un mortier normalisé. Les résultats obtenus montrent la nécessité d’utilisation de 1,5% en masse du ciment de superplastifiant pour une meilleure ouvrabilité du mortier incorporant 5% en masse de PUG. Pour ce taux d’incorporation, une diminution de 6% de la masse volumique à l’état frais, de 42% de la résistance à la compression et de 30% de la résistance à la flexion a été obtenue en raison notamment de la légèreté et de la fragilité du PUG comparé au sable.

Résumé : Abstract : Resumen : La valorisation des déchets recyclables dans les matériaux cimentaires favorise l’écoconstruction. Elle permet d’éviter l’épuisement des ressources naturelles tout en donnant une nouvelle vie aux déchets recyclables qui se trouvent en grande quantité tel que le polyuréthane (PU). Ce travail étudie la faisabilité d’incorporation du PU sous forme de granulé (PUG) dans un mortier cimentaire. Les propriétés du mortier de PUG à l’état frais (teneur en air occlus, masse volumique, affaissement) et à l’état durci (résistance à la flexion et à la compression) sont comparées à un mortier normalisé. Les résultats obtenus montrent la nécessité d’utilisation de 1,5% en masse du ciment de superplastifiant pour une meilleure ouvrabilité du mortier incorporant 5% en masse de PUG. Pour ce taux d’incorporation, une diminution de 6% de la masse volumique à l’état frais, de 42% de la résistance à la compression et de 30% de la résistance à la flexion a été obtenue en raison notamment de la légèreté et de la fragilité du PUG comparé au sable.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Understanding the degradation mechanisms of cement-based systems in combined chloride-sulfate attack

Auteur(s) : Author(s) : Autor(es) : Othman Omikrine Metalssi, Rim Ragoug Touhami, Fabien Barberon, Jean-Baptiste D’espinose de Lacaillerie, Nicolas Roussel, Loïc Divet, Jean-Michel Torrenti

Identifiant HAL : HAL identifier : HAL identificar : hal-04248511

Références bibliographiques : References : Referencias : Othman Omikrine Metalssi, Rim Ragoug Touhami, Fabien Barberon, Jean-Baptiste D’espinose de Lacaillerie, Nicolas Roussel, et al.. Understanding the degradation mechanisms of cement-based systems in combined chloride-sulfate attack. Cement and Concrete Research, 2023, 164, pp.107065. ⟨10.1016/j.cemconres.2022.107065⟩. ⟨hal-04248511⟩

DOI : 10.1016/j.cemconres.2022.107065

Début de résumé : Short abstract : Breve resumen : Chemical aggressions from the environment, such as salt ions, can damage reinforced concrete structures before they reach their service life. These deterioration mechanisms are coupled. The current research on cementitious material's durability has thus gradually shifted to the field of durability damage caused by the combined action of multiple factors. The research in this study concerns the case of combined chloride-sulfate attacks to provide a better understanding of the coupling phenomena by studying the mutual effect of the chloride and sulfate ions on the materials. The effect of the type of cement and curing duration on the chloride-sulfate attack is also investigated. Experimental results based on different investigation techniques (ICP, XRD, NMR, etc.) clearly show the competition between chloride and sulfate ions, and how the physico-chemical involved mechanisms completely change with respect to the cases of an exposure to a single type of ion.

Résumé : Abstract : Resumen : Chemical aggressions from the environment, such as salt ions, can damage reinforced concrete structures before they reach their service life. These deterioration mechanisms are coupled. The current research on cementitious material's durability has thus gradually shifted to the field of durability damage caused by the combined action of multiple factors. The research in this study concerns the case of combined chloride-sulfate attacks to provide a better understanding of the coupling phenomena by studying the mutual effect of the chloride and sulfate ions on the materials. The effect of the type of cement and curing duration on the chloride-sulfate attack is also investigated. Experimental results based on different investigation techniques (ICP, XRD, NMR, etc.) clearly show the competition between chloride and sulfate ions, and how the physico-chemical involved mechanisms completely change with respect to the cases of an exposure to a single type of ion.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Towards the chemical activation of the natural pozzolan of beni-saf for the production of a new geopolymer cement

Auteur(s) : Author(s) : Autor(es) : Nourredine Goufi, Nouria Kaid, Djamel Eddine Kerdal, Rachida Idir

Identifiant HAL : HAL identifier : HAL identificar : hal-04790440

Références bibliographiques : References : Referencias : Nourredine Goufi, Nouria Kaid, Djamel Eddine Kerdal, Rachida Idir. Towards the chemical activation of the natural pozzolan of beni-saf for the production of a new geopolymer cement. Algérie Equipement, 2022, 67, pp.66-73. ⟨hal-04790440⟩

Début de résumé : Short abstract : Breve resumen : The cement industry is currently considered among the most polluting industries. To deal with this situation, new binders known as alkaline cements and géopolymères have been developed. In this article, the mechanical characteristics of a binder composed of a natural pozzolan from the Bouhamidi deposit of Beni-Saf, which is used with a high rate in substitution of the CEM II/A cement are presented. The new mixture or compound cement is activated by chemical solutions of sodium and potassium hydroxides NaOH and KOH. The results show that, unlike other studies, the use of KOH is better than that of NaOH and that the chemical activation of the new compound cement leads to a significant improvement in compressive strengths, especially at young ages. These resistances can even assure multiple practical uses.

Résumé : Abstract : Resumen : The cement industry is currently considered among the most polluting industries. To deal with this situation, new binders known as alkaline cements and géopolymères have been developed. In this article, the mechanical characteristics of a binder composed of a natural pozzolan from the Bouhamidi deposit of Beni-Saf, which is used with a high rate in substitution of the CEM II/A cement are presented. The new mixture or compound cement is activated by chemical solutions of sodium and potassium hydroxides NaOH and KOH. The results show that, unlike other studies, the use of KOH is better than that of NaOH and that the chemical activation of the new compound cement leads to a significant improvement in compressive strengths, especially at young ages. These resistances can even assure multiple practical uses.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

The very early-age behaviour of Ultra-High Performance Concrete containing ground granulated blast furnace slag

Auteur(s) : Author(s) : Autor(es) : Soufien Moula, Amor Ben Fraj, Thomas Wattez, Marwen Bouasker, Nizar Bel Hadj Ali

Identifiant HAL : HAL identifier : HAL identificar : hal-04563387

Références bibliographiques : References : Referencias : Soufien Moula, Amor Ben Fraj, Thomas Wattez, Marwen Bouasker, Nizar Bel Hadj Ali. The very early-age behaviour of Ultra-High Performance Concrete containing ground granulated blast furnace slag. Construction and Building Materials, 2023, 400, pp.132630. ⟨10.1016/j.conbuildmat.2023.132630⟩. ⟨hal-04563387⟩

DOI : 10.1016/j.conbuildmat.2023.132630

Début de résumé : Short abstract : Breve resumen : Ultra-High Performance Concrete (UHPC), despite being a relatively new kind of advanced cement-based material (featuring outstanding mechanical performance and excellent durability), has been deemed unsustainable due to its high cement content, thus increasing its carbon footprint. The large amounts of cement and silica fume (SF) can also raise both production costs and cracking risks due to the high early-age autogenous shrinkage. This paper addresses an innovative approach for developing a more sustainable UHPC involving an efficient application of ground granulated blast furnace slag (GGBS). Slags of two fineness levels are used, displaying a Blaine fineness of 420 m²/kg (SL1) and 700 m²/kg (SL2), respectively. These slags have been incorporated as volume replacements for 30% and 50% cement. The results analysis shows that it is indeed possible to produce SL2-based UHPC with a behavior similar to that of classical silica fume-based materials. The partial replacement of ordinary Portland cement (OPC) by 30% of GGBS (SL1 or SL2) improves workability, promotes the hydration reaction of cement and accelerates setting. In this case, the nucleation site effect of GGBS particles dominates; it seems to be directly correlated with the fineness of the slag used. Thus, the finer additions result in a significant acceleration of setting and hydration. The dilution effect is more sensitive at 50% of SL1 substitution. This prevailing effect delays the hydration reaction, prolongs setting times and decreases the peak of heat flow. In contrast however, this delay effect was not observed for the mixture containing 50% of SL2. Shrinkage measurements indicated that 30% of SL1 induces a slight reduction in early-age chemical and autogenous types of shrinkage. The most severe shrinkage is clearly found in mixtures incorporating 30% of SL2. This phenomenon may be due to the distribution of refined pores, which increases capillary tension. A more sustainable UHPC containing a high level of superfine slag (50%) with less autogenous shrinkage has been successfully produced.

Résumé : Abstract : Resumen : Ultra-High Performance Concrete (UHPC), despite being a relatively new kind of advanced cement-based material (featuring outstanding mechanical performance and excellent durability), has been deemed unsustainable due to its high cement content, thus increasing its carbon footprint. The large amounts of cement and silica fume (SF) can also raise both production costs and cracking risks due to the high early-age autogenous shrinkage. This paper addresses an innovative approach for developing a more sustainable UHPC involving an efficient application of ground granulated blast furnace slag (GGBS). Slags of two fineness levels are used, displaying a Blaine fineness of 420 m²/kg (SL1) and 700 m²/kg (SL2), respectively. These slags have been incorporated as volume replacements for 30% and 50% cement. The results analysis shows that it is indeed possible to produce SL2-based UHPC with a behavior similar to that of classical silica fume-based materials. The partial replacement of ordinary Portland cement (OPC) by 30% of GGBS (SL1 or SL2) improves workability, promotes the hydration reaction of cement and accelerates setting. In this case, the nucleation site effect of GGBS particles dominates; it seems to be directly correlated with the fineness of the slag used. Thus, the finer additions result in a significant acceleration of setting and hydration. The dilution effect is more sensitive at 50% of SL1 substitution. This prevailing effect delays the hydration reaction, prolongs setting times and decreases the peak of heat flow. In contrast however, this delay effect was not observed for the mixture containing 50% of SL2. Shrinkage measurements indicated that 30% of SL1 induces a slight reduction in early-age chemical and autogenous types of shrinkage. The most severe shrinkage is clearly found in mixtures incorporating 30% of SL2. This phenomenon may be due to the distribution of refined pores, which increases capillary tension. A more sustainable UHPC containing a high level of superfine slag (50%) with less autogenous shrinkage has been successfully produced.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

The FastCarb project: Taking advantage of the accelerated carbonation of recycled concrete aggregates

Auteur(s) : Author(s) : Autor(es) : Jean Michel Torrenti, Ouali Amiri, Laury Barnes-Davin, Frédéric Bougrain, Sandrine Braymand, Bogdan Cazacliu, Johan Colin, Amaury Cudeville, Patrick Dangla, Assia Djerbi, Mathilde Doutreleau, Adelaïde Feraille, Marielle Gueguen, Xavier Guillot, Yunlu Hou, Laurent Izoret, Yvan-Pierre Jacob, Jena Jeong, Jean David Lau Hiu Hoong, Pierre-Yves Mahieux, Jonathan Mai-Nhu, Heriberto Martinez, Vincent Meyer, Vincent Morin, Thomas Pernin, Jean-Marc Potier, Laurent Poulizac, Patrick Rougeau, Myriam Saadé, Lucie Schmitt, Thierry Sedran, Marie Sereng, Anthony Soive, Glaydson Symoes dos Reys, Philippe Turcry

Identifiant HAL : HAL identifier : HAL identificar : hal-03981982

Références bibliographiques : References : Referencias : Jean Michel Torrenti, Ouali Amiri, Laury Barnes-Davin, Frédéric Bougrain, Sandrine Braymand, et al.. The FastCarb project: Taking advantage of the accelerated carbonation of recycled concrete aggregates. Case Studies in Construction Materials, 2022, 17, pp.art.e01349. ⟨10.1016/j.cscm.2022.e01349⟩. ⟨hal-03981982⟩

DOI : 10.1016/j.cscm.2022.e01349

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Sustainable cementitious materials: exploring alkali-activated binders

Auteur(s) : Author(s) : Autor(es) : Nourredine Goufi, Nouria Kaid, Djamel El Ddine Kerdal, Rachida Idir

Identifiant HAL : HAL identifier : HAL identificar : hal-04790389

Références bibliographiques : References : Referencias : Nourredine Goufi, Nouria Kaid, Djamel El Ddine Kerdal, Rachida Idir. Sustainable cementitious materials: exploring alkali-activated binders. Proceedings of the ICE - Construction Materials, 2024, 177 (4), pp.233-248. ⟨10.1680/jcoma.22.00037⟩. ⟨hal-04790389⟩

DOI : 10.1680/jcoma.22.00037

Début de résumé : Short abstract : Breve resumen : The potential use of natural pozzolan (NP) from Algeria for the production of a new alkali-activated binder (AAB) was investigated. CEM II 42.5 cement was added to the NP as a calcium resource. The mixtures were then activated by sodium hydroxide, sodium sulfate and sodium silicate at concentrations of 3, 7 and 11%, respectively. The chemical activators were added in liquid or solid forms to develop a one-part alkali-activated material. X-ray diffraction, thermogravimetric analysis/differential thermal analysis and scanning electron microscopy/energy dispersive spectroscopy were used to assess the microstructure and elemental composition of the hydration products. Properties such as the consistency and setting times of various mixtures and compressive strengths of AAB specimens cured for 7, 28, 90 and 420 days were determined. The ratio of cement carbon dioxide footprint to strength ratio is suggested as an indicator to highlight the environmental contributions of the AABs. The AABs showed different strength levels depending on the activator type and its concentration. A maximum 28-day compressive strength of 25.2 MPa was achieved with 7% sodium silicate. High early strength development was also noted; more than 50% of the strength could be achieved within 7 days. Finally, an environmental advantage was noted, as the Global Warming Potential of the AABs could be 70% lower than that of ordinary Portland cement.

Résumé : Abstract : Resumen : The potential use of natural pozzolan (NP) from Algeria for the production of a new alkali-activated binder (AAB) was investigated. CEM II 42.5 cement was added to the NP as a calcium resource. The mixtures were then activated by sodium hydroxide, sodium sulfate and sodium silicate at concentrations of 3, 7 and 11%, respectively. The chemical activators were added in liquid or solid forms to develop a one-part alkali-activated material. X-ray diffraction, thermogravimetric analysis/differential thermal analysis and scanning electron microscopy/energy dispersive spectroscopy were used to assess the microstructure and elemental composition of the hydration products. Properties such as the consistency and setting times of various mixtures and compressive strengths of AAB specimens cured for 7, 28, 90 and 420 days were determined. The ratio of cement carbon dioxide footprint to strength ratio is suggested as an indicator to highlight the environmental contributions of the AABs. The AABs showed different strength levels depending on the activator type and its concentration. A maximum 28-day compressive strength of 25.2 MPa was achieved with 7% sodium silicate. High early strength development was also noted; more than 50% of the strength could be achieved within 7 days. Finally, an environmental advantage was noted, as the Global Warming Potential of the AABs could be 70% lower than that of ordinary Portland cement.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Study of the effects of incorporating depolluted cellulose acetate in mortars, with and without superplasticizer, in view of recycling cigarette butt waste

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Othman Omikrine Metalssi, Sandrine Marceau, Teddy Fen-Chong

Identifiant HAL : HAL identifier : HAL identificar : hal-03933087

Références bibliographiques : References : Referencias : Joe Tannous, Thouraya Salem, Othman Omikrine Metalssi, Sandrine Marceau, Teddy Fen-Chong. Study of the effects of incorporating depolluted cellulose acetate in mortars, with and without superplasticizer, in view of recycling cigarette butt waste. Construction and Building Materials, 2022, 346, pp.128492. ⟨10.1016/j.conbuildmat.2022.128492⟩. ⟨hal-03933087⟩

DOI : 10.1016/j.conbuildmat.2022.128492

Début de résumé : Short abstract : Breve resumen : Cigarette butts (CB) rank at the top of littered waste materials and can cause a serious impact on the environment. CB are mainly composed of cellulose acetate (CA) fibers, a polymer that has poor biodegradability. Following the growing concern to reduce pollution, this study presents an innovative way to recycle industrial treated CA fibers by incorporating them in cementitious mortars as partial replacement of sand. CA fibers are found to be porous, with a total porosity of 97%, to have a bulk density of 65 ± 2 kg/m3 when compacted and to have a high water absorption of about 853 wt% that is higher than other bio-sourced materials. Optimal formulations based on workability tests are 0.2 wt% of sand replacement by CA without the use of a superplasticizer (SP), and 1.3 wt% with 3 wt% of SP. The compressive and bending strengths, and the total shrinkage of the reference mortar are close to those the of the 0.2 wt% CA contained mortars, as they have close porosity. The latter increases for 1.3 wt% CA (and SP) contained mortar leading to a decrease in mechanical strength and an in increase in shrinkage. Thermogravimetric analyses (TGA) reveal that the quantity of water released by the CA fibers enhances the cement hydration.

Résumé : Abstract : Resumen : Cigarette butts (CB) rank at the top of littered waste materials and can cause a serious impact on the environment. CB are mainly composed of cellulose acetate (CA) fibers, a polymer that has poor biodegradability. Following the growing concern to reduce pollution, this study presents an innovative way to recycle industrial treated CA fibers by incorporating them in cementitious mortars as partial replacement of sand. CA fibers are found to be porous, with a total porosity of 97%, to have a bulk density of 65 ± 2 kg/m3 when compacted and to have a high water absorption of about 853 wt% that is higher than other bio-sourced materials. Optimal formulations based on workability tests are 0.2 wt% of sand replacement by CA without the use of a superplasticizer (SP), and 1.3 wt% with 3 wt% of SP. The compressive and bending strengths, and the total shrinkage of the reference mortar are close to those the of the 0.2 wt% CA contained mortars, as they have close porosity. The latter increases for 1.3 wt% CA (and SP) contained mortar leading to a decrease in mechanical strength and an in increase in shrinkage. Thermogravimetric analyses (TGA) reveal that the quantity of water released by the CA fibers enhances the cement hydration.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Strength Development and Environmental Impact of Waste-Glass-Based Cements Activated with Portland Cement, NaOH, Na-Silicate or Na-Carbonates at Ambient Temperature

Auteur(s) : Author(s) : Autor(es) : Louise Lemesre, Rachida Idir, Martin Cyr

Identifiant HAL : HAL identifier : HAL identificar : hal-04790085

Références bibliographiques : References : Referencias : Louise Lemesre, Rachida Idir, Martin Cyr. Strength Development and Environmental Impact of Waste-Glass-Based Cements Activated with Portland Cement, NaOH, Na-Silicate or Na-Carbonates at Ambient Temperature. Materials, 2024, 17 (20), pp.5097. ⟨10.3390/ma17205097⟩. ⟨hal-04790085⟩

DOI : 10.3390/ma17205097

Début de résumé : Short abstract : Breve resumen : This paper presents an experimental approach to the study of the compressive strength, isothermal calorimetry and life cycle assessment (LCA) of alkali-activated pastes based on soda–lime–silica glass, established to investigate the effect of the nature and proportion of the activator. Four different activators are compared: Portland cement, sodium silicate, sodium carbonate (at four percentages by weight: 5, 10, 15 and 25 wt% relative to glass) and sodium hydroxide (3.5 wt%). Portland cement and sodium carbonate were added in dry form (powder), while sodium hydroxide (pellets) and silicate were used in solution. At room temperature, glass exhibited slow reaction kinetics, with mechanical performance increasing significantly beyond 28 days of curing. The nature of the activator had a direct impact on the mechanical performance of the activated glass. Cement-activated pastes and those containing 25 wt% of sodium carbonate developed strength at an early age (0–7 days). The other activators showed lower strength development before 28 days of reaction. While a higher activator content improved short-term performance, it also increased the environmental impact, primarily due to the activator. The LCA, conducted on 11 indicators, revealed that the environmental impact was largely driven by the type and amount of activator used. A performance impact indicator (PII) related to global warming was introduced to compare pastes with different performance values. At an early age (0–28 days), the PII was lower when the activator level was high but decreased over time as the strength improved. In terms of long-term performance (360 days), hydroxide and sodium carbonate (10 wt%) achieved compressive strengths of 91 and 74 MPa, respectively. These systems offered a balance between high performance and a reduced environmental impact, making them of interest for sustainable applications.

Résumé : Abstract : Resumen : This paper presents an experimental approach to the study of the compressive strength, isothermal calorimetry and life cycle assessment (LCA) of alkali-activated pastes based on soda–lime–silica glass, established to investigate the effect of the nature and proportion of the activator. Four different activators are compared: Portland cement, sodium silicate, sodium carbonate (at four percentages by weight: 5, 10, 15 and 25 wt% relative to glass) and sodium hydroxide (3.5 wt%). Portland cement and sodium carbonate were added in dry form (powder), while sodium hydroxide (pellets) and silicate were used in solution. At room temperature, glass exhibited slow reaction kinetics, with mechanical performance increasing significantly beyond 28 days of curing. The nature of the activator had a direct impact on the mechanical performance of the activated glass. Cement-activated pastes and those containing 25 wt% of sodium carbonate developed strength at an early age (0–7 days). The other activators showed lower strength development before 28 days of reaction. While a higher activator content improved short-term performance, it also increased the environmental impact, primarily due to the activator. The LCA, conducted on 11 indicators, revealed that the environmental impact was largely driven by the type and amount of activator used. A performance impact indicator (PII) related to global warming was introduced to compare pastes with different performance values. At an early age (0–28 days), the PII was lower when the activator level was high but decreased over time as the strength improved. In terms of long-term performance (360 days), hydroxide and sodium carbonate (10 wt%) achieved compressive strengths of 91 and 74 MPa, respectively. These systems offered a balance between high performance and a reduced environmental impact, making them of interest for sustainable applications.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Stockage de CO2 dans les GBR -Recommandations du PN FastCarb

Auteur(s) : Author(s) : Autor(es) : Jean Michel Torrenti, Xavier Guillot

Identifiant HAL : HAL identifier : HAL identificar : hal-04493452

Références bibliographiques : References : Referencias : Jean Michel Torrenti, Xavier Guillot. Stockage de CO2 dans les GBR -Recommandations du PN FastCarb. Academic Journal of Civil Engineering, 2023, 41 (1 - special Issue CFGC 2023), pp.515-521. ⟨10.26168/ajce.41.1.51⟩. ⟨hal-04493452⟩

DOI : 10.26168/ajce.41.1.51

Début de résumé : Short abstract : Breve resumen : Les granulats de béton recyclé (GBR) contiennent une part de pâte cimentaire qui peut être carbonatée. Le projet national FastCarb vise à minéraliser le CO2 au sein des GBR, améliorant ainsi la qualité de ces granulats par le colmatage de la porosité et enfin diminuer l'impact CO2 du béton dans les structures. Il a deux objectifs principaux : optimiser en laboratoire le processus de carbonatation accélérée et montrer qu’il peut être transposé à l'échelle industrielle. Ce document présente les recommandations du projet, en termes de paramètres optimisant le process, de modélisation du phénomène, de réalisation de deux démonstrateurs industriels, de résultats sur les bétons fabriqués avec des GBR carbonatés et, enfin, de bilan environnemental et économique. Les résultats montrent clairement l’intérêt du procédé pour la fraction fine (sable recyclé) qui est peu recyclé actuellement dans les bétons et qui pourrait présenter grâce à la carbonatation un bilan environnemental favorable et permettant de diminuer significativement celui des bétons

Résumé : Abstract : Resumen : Les granulats de béton recyclé (GBR) contiennent une part de pâte cimentaire qui peut être carbonatée. Le projet national FastCarb vise à minéraliser le CO2 au sein des GBR, améliorant ainsi la qualité de ces granulats par le colmatage de la porosité et enfin diminuer l'impact CO2 du béton dans les structures. Il a deux objectifs principaux : optimiser en laboratoire le processus de carbonatation accélérée et montrer qu’il peut être transposé à l'échelle industrielle. Ce document présente les recommandations du projet, en termes de paramètres optimisant le process, de modélisation du phénomène, de réalisation de deux démonstrateurs industriels, de résultats sur les bétons fabriqués avec des GBR carbonatés et, enfin, de bilan environnemental et économique. Les résultats montrent clairement l’intérêt du procédé pour la fraction fine (sable recyclé) qui est peu recyclé actuellement dans les bétons et qui pourrait présenter grâce à la carbonatation un bilan environnemental favorable et permettant de diminuer significativement celui des bétons

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Standardised models for cracking due to restraint of imposed strainsthe state of the art

Auteur(s) : Author(s) : Autor(es) : Agnieszka Jędrzejewska, Mariusz Zych, Fragkoulis Kanavaris, Fangjie Chen, Shintaro Ito, Jean Michel Torrenti, Dirk Schlicke, Shingo Asamoto, Miguel Azenha

Identifiant HAL : HAL identifier : HAL identificar : hal-04518955

Références bibliographiques : References : Referencias : Agnieszka Jędrzejewska, Mariusz Zych, Fragkoulis Kanavaris, Fangjie Chen, Shintaro Ito, et al.. Standardised models for cracking due to restraint of imposed strainsthe state of the art. Structural Concrete, 2023, 24 (4), pp.5388-5405. ⟨10.1002/suco.202200301⟩. ⟨hal-04518955⟩

DOI : 10.1002/suco.202200301

Début de résumé : Short abstract : Breve resumen : Crack control throughout the service life of a structure has always been a challenging task for engineers and asset owners, particularly those who are involved with the design and construction of structures with increased durability requirements, such as liquid retaining structures, nuclear containment buildings or structures in direct contact with ground, but also other externally restrained structures. For these reasons, several standardized methods exist throughout the global engineering community which encompass differences between them. This work is a state‐of‐the‐art review of the methods for crack width control due to imposed strains recommended by different regulatory documents from Europe, USA, Australia and Japan, and provide a reasonable degree of guidance with respect to the assumptions, possibilities and restrictions of each method. This work resonates with the scope of the RILEM TC 287‐CCS: Early age and long‐term crack width analysis in RC structures .

Résumé : Abstract : Resumen : Crack control throughout the service life of a structure has always been a challenging task for engineers and asset owners, particularly those who are involved with the design and construction of structures with increased durability requirements, such as liquid retaining structures, nuclear containment buildings or structures in direct contact with ground, but also other externally restrained structures. For these reasons, several standardized methods exist throughout the global engineering community which encompass differences between them. This work is a state‐of‐the‐art review of the methods for crack width control due to imposed strains recommended by different regulatory documents from Europe, USA, Australia and Japan, and provide a reasonable degree of guidance with respect to the assumptions, possibilities and restrictions of each method. This work resonates with the scope of the RILEM TC 287‐CCS: Early age and long‐term crack width analysis in RC structures .

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Spalling rate of concretes subject to combined leaching and external sulfate attack

Auteur(s) : Author(s) : Autor(es) : Bo Ran, Kefei Li, Teddy Fen-Chong, Othman Omikrine Metalssi, Patrick Dangla

Identifiant HAL : HAL identifier : HAL identificar : hal-04779612

Références bibliographiques : References : Referencias : Bo Ran, Kefei Li, Teddy Fen-Chong, Othman Omikrine Metalssi, Patrick Dangla. Spalling rate of concretes subject to combined leaching and external sulfate attack. Cement and Concrete Research, 2022. ⟨hal-04779612⟩

Début de résumé : Short abstract : Breve resumen :

A spalling rate model is established to estimate the damage of concretes subject to the combined action of leaching and external sulfate attack (ESA). Two sub-models are developed to consider the different damage patterns. The profiles of sulfate and hydroxide ions are obtained from the solution of a dual moving boundary problem (MBP). The supersaturation of ettringite crystal is evaluated from these profiles, the effective stress is calculated through poromechanics for pore crystallization, and the spalling depth is determined using the fracture criterion. The experimental validation confirms the proportionality between the spalling depth and the square root of exposure time, and the models give conservative results but on the correct magnitude order for spalling depth. The parametric analysis shows the foremost impact of aluminate content and sulfate diffusivity on damage rate. The main assumptions in models lead to conservative predictions, but yet the model results are meaningful for engineering use.

Résumé : Abstract : Resumen :

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Reuse of river sediments in pervious concrete: Towards an adaptation of concrete to the circular economy and climate change challenges

Auteur(s) : Author(s) : Autor(es) : Hamza Beddaa, Junior Tchiotsop, Amor Ben Fraj, Ciryle Somé

Identifiant HAL : HAL identifier : HAL identificar : hal-04500817

Références bibliographiques : References : Referencias : Hamza Beddaa, Junior Tchiotsop, Amor Ben Fraj, Ciryle Somé. Reuse of river sediments in pervious concrete: Towards an adaptation of concrete to the circular economy and climate change challenges. Construction and Building Materials, 2023, 368, pp.130443. ⟨10.1016/j.conbuildmat.2023.130443⟩. ⟨hal-04500817⟩

DOI : 10.1016/j.conbuildmat.2023.130443

Début de résumé : Short abstract : Breve resumen : The construction industry is one of the main sectors responsible for today’s climate change as well as the extraction of large volumes of raw materials for concrete manufacturing. At the same time, significant volumes of sediments are being dredged each year (in France, nearly 60 M m3), and given their waste status these materials are barely or not at all being reused. This industry is the primary target chosen by sediment managers to ensure a viable and sustainable reuse stream. More specifically, pervious concrete is considered as a green infrastructure solution for urban areas. In this work, sediments dredged from the Seine Basin in Paris (France) were used to produce a cleaner pervious concrete. Two sets of pervious concretes were prepared, the first based on sandy sediments by fully substituting the conventional sand, while the second set of concretes was based on fine sediments by partially substituting the cement. Slump, fresh density, hydration, porosity, permeability, compressive strength, tensile splitting strength and thermal conductivity were all evaluated through testing. Results show that the incorporation of sediments delayed, albeit marginally, the cement hydration (by less than 3 h) due to the presence of organic matter. The properties of pervious concrete are affected by the grain size of the incorporated sediment. The finer the sediment, the more compact the concrete structure, hence generating less porosity in the mixture, lower permeability and higher compressive strength. The thermal conductivity and volumetric heat of these pervious sediment-based concretes were also comparable to measures of the control concrete yet lower than those of ordinary concrete.

Résumé : Abstract : Resumen : The construction industry is one of the main sectors responsible for today’s climate change as well as the extraction of large volumes of raw materials for concrete manufacturing. At the same time, significant volumes of sediments are being dredged each year (in France, nearly 60 M m3), and given their waste status these materials are barely or not at all being reused. This industry is the primary target chosen by sediment managers to ensure a viable and sustainable reuse stream. More specifically, pervious concrete is considered as a green infrastructure solution for urban areas. In this work, sediments dredged from the Seine Basin in Paris (France) were used to produce a cleaner pervious concrete. Two sets of pervious concretes were prepared, the first based on sandy sediments by fully substituting the conventional sand, while the second set of concretes was based on fine sediments by partially substituting the cement. Slump, fresh density, hydration, porosity, permeability, compressive strength, tensile splitting strength and thermal conductivity were all evaluated through testing. Results show that the incorporation of sediments delayed, albeit marginally, the cement hydration (by less than 3 h) due to the presence of organic matter. The properties of pervious concrete are affected by the grain size of the incorporated sediment. The finer the sediment, the more compact the concrete structure, hence generating less porosity in the mixture, lower permeability and higher compressive strength. The thermal conductivity and volumetric heat of these pervious sediment-based concretes were also comparable to measures of the control concrete yet lower than those of ordinary concrete.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Reuse of Untreated Fine Sediments as Filler: Is It More Beneficial than Incorporating Them as Sand?

Auteur(s) : Author(s) : Autor(es) : Hamza Beddaa, Amor Ben Fraj, Francis Lavergne, Jean-Michel Torrenti

Identifiant HAL : HAL identifier : HAL identificar : hal-04500993

Références bibliographiques : References : Referencias : Hamza Beddaa, Amor Ben Fraj, Francis Lavergne, Jean-Michel Torrenti. Reuse of Untreated Fine Sediments as Filler: Is It More Beneficial than Incorporating Them as Sand?. Buildings, 2022, 12 (2), pp.211. ⟨10.3390/buildings12020211⟩. ⟨hal-04500993⟩

DOI : 10.3390/buildings12020211

Début de résumé : Short abstract : Breve resumen : Large amounts of sediments are dredged each year to ensure navigation. These materials, classified as waste, seem to be promising alternatives to conventional construction materials. Dredging operations, carried out by the Territorial Directorate of the Seine Basin (DTBS), generate an annual volume of sediments of about 150,000 m3, of which nearly 50% are fine sediments (<80 μm). For these fine sediments, it is necessary to look for possible ways of valorisation, knowing that the coarse sediments, sands and gravels are already easily reused in concrete. The valorisation of fine sediments, such as concrete with 30% sand, has already been evaluated. However, it was found to significantly affect concrete performance; it extends setting time from 3 to 18 h, decreases compressive strength by an average of 50% and increases shrinkage deformation up to 200%. This paper seeks to evaluate the effects of ten different fine sediments, used as substitutes for 10% of cement by volume, on physico-chemical and mechanical properties. The experimental results show that fine sediments marginally affect concrete properties. The main peak of the released heat flux is delayed to less than 4 h, the compressive strength is decreased by 8% on average and the increase in shrinkage deformation does not exceed 17%, except for in two fine sediments. This incorporation method also has an environmental advantage over substituting 30% of concrete with sand, as it reduces CO2 emissions by almost 10% (instead of 0.2%).

Résumé : Abstract : Resumen : Large amounts of sediments are dredged each year to ensure navigation. These materials, classified as waste, seem to be promising alternatives to conventional construction materials. Dredging operations, carried out by the Territorial Directorate of the Seine Basin (DTBS), generate an annual volume of sediments of about 150,000 m3, of which nearly 50% are fine sediments (<80 μm). For these fine sediments, it is necessary to look for possible ways of valorisation, knowing that the coarse sediments, sands and gravels are already easily reused in concrete. The valorisation of fine sediments, such as concrete with 30% sand, has already been evaluated. However, it was found to significantly affect concrete performance; it extends setting time from 3 to 18 h, decreases compressive strength by an average of 50% and increases shrinkage deformation up to 200%. This paper seeks to evaluate the effects of ten different fine sediments, used as substitutes for 10% of cement by volume, on physico-chemical and mechanical properties. The experimental results show that fine sediments marginally affect concrete properties. The main peak of the released heat flux is delayed to less than 4 h, the compressive strength is decreased by 8% on average and the increase in shrinkage deformation does not exceed 17%, except for in two fine sediments. This incorporation method also has an environmental advantage over substituting 30% of concrete with sand, as it reduces CO2 emissions by almost 10% (instead of 0.2%).

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging

Auteur(s) : Author(s) : Autor(es) : Fayçal Lahjiri, Virginie Mouillet, Anne Dony, Layella Ziyani, Sabine Gazeau, Fréderic Delfosse, Michael Sztucki, Philippe Dieudonne-George, François Henn

Identifiant HAL : HAL identifier : HAL identificar : hal-04405689

Références bibliographiques : References : Referencias : Fayçal Lahjiri, Virginie Mouillet, Anne Dony, Layella Ziyani, Sabine Gazeau, et al.. Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging. Energy & Fuels, 2023, 37 (12), pp.8444-8455. ⟨10.1021/acs.energyfuels.2c04159⟩. ⟨hal-04405689⟩

DOI : 10.1021/acs.energyfuels.2c04159

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging

Identifiant HAL : HAL identifier : HAL identificar : hal-04807943

Références bibliographiques : References : Referencias : Fayçal Lahjiri, Virginie Mouillet, Anne Dony, Layella Ziyani, Sabine Gazeau, et al.. Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging. Energy & Fuels, 2023, 37 (12), pp.8444 - 8455. ⟨10.1021/acs.energyfuels.2c04159⟩. ⟨hal-04807943⟩

DOI : 10.1021/acs.energyfuels.2c04159

Début de résumé : Short abstract : Breve resumen : An oxidative aging treatment in the laboratory by a pressure aging vessel (PAV) is applied on fresh 10/20 and 35/50 bitumens with different thermomechanical properties, in order to simulate long-term aging of bitumen on road pavements. The influence of the aging treatment on bitumen properties is studied as a function of the aging time. Combining Fourier transform infrared spectroscopy (FTIR), the saturate, aromatic, and resin-asphaltene determinator (SAR-AD), and small-angle X-ray scattering (SAXS) techniques allows us to confirm that less polar aromatic species are oxidized onto more polar content, and the asphaltene family content is found to increase significantly for more than 75% after a 45 h PAV treatment. SAXS patterns exhibit a progressive increase in the average size of nanoaggregates (from ∼1.8 to 2.3 nm) and primary clusters (from ∼4.7 to 5.4 nm) after such aging treatment. This is coherent with both the size increase of smaller asphaltene nanoaggregates and the formation of new nanoaggregates by autoassociation of new oxidized asphaltene monomers. As expected, such evolutions of both the asphaltene content and its nanostructure have an influence on macroscopic rheological properties. An analysis of black diagrams and bending beam rheometer (BBR) measurements show that aging induces a shift toward higher moduli at low frequencies coupled with a loss of curvature at intermediate frequencies, meaning lesser susceptibility of aged bitumens regarding thermomechanical solicitation, a loss of viscous behavior at the profit of elastic behavior, and a decrease of the ability to relax stress at low temperatures.

Résumé : Abstract : Resumen : An oxidative aging treatment in the laboratory by a pressure aging vessel (PAV) is applied on fresh 10/20 and 35/50 bitumens with different thermomechanical properties, in order to simulate long-term aging of bitumen on road pavements. The influence of the aging treatment on bitumen properties is studied as a function of the aging time. Combining Fourier transform infrared spectroscopy (FTIR), the saturate, aromatic, and resin-asphaltene determinator (SAR-AD), and small-angle X-ray scattering (SAXS) techniques allows us to confirm that less polar aromatic species are oxidized onto more polar content, and the asphaltene family content is found to increase significantly for more than 75% after a 45 h PAV treatment. SAXS patterns exhibit a progressive increase in the average size of nanoaggregates (from ∼1.8 to 2.3 nm) and primary clusters (from ∼4.7 to 5.4 nm) after such aging treatment. This is coherent with both the size increase of smaller asphaltene nanoaggregates and the formation of new nanoaggregates by autoassociation of new oxidized asphaltene monomers. As expected, such evolutions of both the asphaltene content and its nanostructure have an influence on macroscopic rheological properties. An analysis of black diagrams and bending beam rheometer (BBR) measurements show that aging induces a shift toward higher moduli at low frequencies coupled with a loss of curvature at intermediate frequencies, meaning lesser susceptibility of aged bitumens regarding thermomechanical solicitation, a loss of viscous behavior at the profit of elastic behavior, and a decrease of the ability to relax stress at low temperatures.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Recycling of construction site sludge (Bentonitic) and concrete slurry in cementitious matrix

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Gwenn Le Saout

Identifiant HAL : HAL identifier : HAL identificar : hal-04791265

Références bibliographiques : References : Referencias : Rachida Idir, Gwenn Le Saout. Recycling of construction site sludge (Bentonitic) and concrete slurry in cementitious matrix. 10th International Conference on Engineering for Waste and Biomass Valorization, Aug 2024, Sendai, Japan. ⟨hal-04791265⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Recycling glass fibre coming from end-of-life wind turbine blades for potential application in civil engineering

Auteur(s) : Author(s) : Autor(es) : Chikha Imen, Youcef Bouzidi, Samir Baklouti, Nacef Tazi, Rachida Idir

Identifiant HAL : HAL identifier : HAL identificar : hal-04791754

Références bibliographiques : References : Referencias : Chikha Imen, Youcef Bouzidi, Samir Baklouti, Nacef Tazi, Rachida Idir. Recycling glass fibre coming from end-of-life wind turbine blades for potential application in civil engineering. 4th International Conference On Recycling And Waste Management, Aug 2022, Paris, France. ⟨hal-04791754⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Raman identification of CaCO3 polymorphs in concrete prepared with carbonated recycled concrete aggregates

Auteur(s) : Author(s) : Autor(es) : M. Marchetti, G. Gouadec, M. Offroy, M. Haouchine, A. Djerbi, O. Omikrine-Metalssi, J.-M. Torrenti, J.-M. Mechling, G. Simon, Philippe Turcry, P. Barthelemy, O. Amiri

Identifiant HAL : HAL identifier : HAL identificar : hal-04680626

Références bibliographiques : References : Referencias : M. Marchetti, G. Gouadec, M. Offroy, M. Haouchine, A. Djerbi, et al.. Raman identification of CaCO3 polymorphs in concrete prepared with carbonated recycled concrete aggregates. Materials and structures, 2024, 57 (2), pp.28. ⟨10.1617/s11527-024-02296-z⟩. ⟨hal-04680626⟩

DOI : 10.1617/s11527-024-02296-z

Début de résumé : Short abstract : Breve resumen : The urge to preserve natural resources, to reduce cement production CO2 emissions and to recycle concrete waste conducted to the French national program FastCarb. It is aimed at using recycled concrete aggregates (RCAs), once carbonated with CO2 coming from cement production sites, as a replacement for natural aggregates. The carbonation step serves to reduce the porosity of the old cement paste and to improve future concrete properties. Two different carbonation processes (rolling drum (P1), fluidized bed (P2)) were tested and the resulting RCAs were mixed in different weight proportions with natural aggregates to elaborate new concretes. Raman investigations were then conducted on some sections to analyze the carbonated phases and their spatial distribution.

Results indicated a difference in polymorphs distributions. Process P1 seems to generate more vaterite than process P2, which mainly generates calcite and aragonite. They also allowed to appreciate the thickness of the interface between the old and the new cement pastes.

Résumé : Abstract : Resumen : The urge to preserve natural resources, to reduce cement production CO2 emissions and to recycle concrete waste conducted to the French national program FastCarb. It is aimed at using recycled concrete aggregates (RCAs), once carbonated with CO2 coming from cement production sites, as a replacement for natural aggregates. The carbonation step serves to reduce the porosity of the old cement paste and to improve future concrete properties. Two different carbonation processes (rolling drum (P1), fluidized bed (P2)) were tested and the resulting RCAs were mixed in different weight proportions with natural aggregates to elaborate new concretes. Raman investigations were then conducted on some sections to analyze the carbonated phases and their spatial distribution.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Proposition d'un modèle d'homogénéisation des propriétés mécaniques d'un limon traité à la chaux et au liant hydraulique

Auteur(s) : Author(s) : Autor(es) : Lucile Pigeot, Anthony Soive, Nathalie Dufour, Jean-François Barthélémy, Fabienne Dermenonville, Ahmed Loukili

Identifiant HAL : HAL identifier : HAL identificar : hal-04360313

Références bibliographiques : References : Referencias : Lucile Pigeot, Anthony Soive, Nathalie Dufour, Jean-François Barthélémy, Fabienne Dermenonville, et al.. Proposition d'un modèle d'homogénéisation des propriétés mécaniques d'un limon traité à la chaux et au liant hydraulique. Academic Journal of Civil Engineering, 2023, 41 (1), ⟨10.26168/10.26168/ajce.41.1.21⟩. ⟨hal-04360313⟩

DOI : 10.26168/10.26168/ajce.41.1.21

Début de résumé : Short abstract : Breve resumen : L’utilisation de sols traités à la chaux et aux liants hydrauliques est de plus en plus privilégiée pour la construction d’ouvrages géotechniques, aussi bien dans une démarche économique qu’environnementale. Afin d’optimiser le dimensionnement de ces ouvrages, une compréhension fine du comportement chemo-mécanique de ces sols est nécessaire, en particulier pour comprendre l’origine du gain mécanique associé à leur traitement. Pour cela, un modèle multi-échelle d’homogénéisation est proposé. Il est basé sur des observations de l’agencement structurel entre les particules de sol et des phases hydratées provenant de la chaux et du ciment ainsi que sur des hypothèses sur la quantité et la nature des hydrates formés. Les résultats numériques ainsi obtenus sont comparés à des mesures expérimentales du module d’Young en laboratoire obtenues avec des cellules piézoélectriques sur des éprouvettes de sol compacté. La comparaison permet de valider les hypothèses du modèle proposé.

Résumé : Abstract : Resumen : L’utilisation de sols traités à la chaux et aux liants hydrauliques est de plus en plus privilégiée pour la construction d’ouvrages géotechniques, aussi bien dans une démarche économique qu’environnementale. Afin d’optimiser le dimensionnement de ces ouvrages, une compréhension fine du comportement chemo-mécanique de ces sols est nécessaire, en particulier pour comprendre l’origine du gain mécanique associé à leur traitement. Pour cela, un modèle multi-échelle d’homogénéisation est proposé. Il est basé sur des observations de l’agencement structurel entre les particules de sol et des phases hydratées provenant de la chaux et du ciment ainsi que sur des hypothèses sur la quantité et la nature des hydrates formés. Les résultats numériques ainsi obtenus sont comparés à des mesures expérimentales du module d’Young en laboratoire obtenues avec des cellules piézoélectriques sur des éprouvettes de sol compacté. La comparaison permet de valider les hypothèses du modèle proposé.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Projet National FastCarb – Propriétés de bétons contenant des granulats de béton recyclés carbonatés

Auteur(s) : Author(s) : Autor(es) : Thomas Pernin, Laetitia Robbiano, Amor Ben Fraj, Harifidy Ranaivomanana, Fanny Geffray, Gabriel Pham, Xavier Guillot, Ouali Amiri, Jonathan Mai-Nhu, Patrick Rougeau

Identifiant HAL : HAL identifier : HAL identificar : hal-04603957

Références bibliographiques : References : Referencias : Thomas Pernin, Laetitia Robbiano, Amor Ben Fraj, Harifidy Ranaivomanana, Fanny Geffray, et al.. Projet National FastCarb – Propriétés de bétons contenant des granulats de béton recyclés carbonatés. Academic Journal of Civil Engineering, 2022, Fastcarb 2022, 40 (3), pp.93-104. ⟨10.26168/ajce.40.3.8⟩. ⟨hal-04603957⟩

DOI : 10.26168/ajce.40.3.8

Début de résumé : Short abstract : Breve resumen : Les travaux menés dans le cadre du projet national FastCarb ont exploré l’influence de l’utilisation des granulats recyclés carbonatés sur la fabrication des bétons, leur microstructure et leur durabilité. Les résultats montrent que les granulats recyclés carbonatés ont un comportement très similaire à celui des granulats recyclés non carbonatés. Les granulats recyclés carbonatés peuvent être utilisés dans les bétons selon les mêmes règles de l’art que celles définies dans les textes normatifs actuels (NF EN 206/CN notamment), elles-mêmes issues des recommandations du projet national RECYBETON.

Résumé : Abstract : Resumen : Les travaux menés dans le cadre du projet national FastCarb ont exploré l’influence de l’utilisation des granulats recyclés carbonatés sur la fabrication des bétons, leur microstructure et leur durabilité. Les résultats montrent que les granulats recyclés carbonatés ont un comportement très similaire à celui des granulats recyclés non carbonatés. Les granulats recyclés carbonatés peuvent être utilisés dans les bétons selon les mêmes règles de l’art que celles définies dans les textes normatifs actuels (NF EN 206/CN notamment), elles-mêmes issues des recommandations du projet national RECYBETON.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Practical insights on standardised models for estimation of crack width due to imposed strains in edge-restrained reinforced concrete elements

Auteur(s) : Author(s) : Autor(es) : Agnieszka Jędrzejewska, Mariusz Zych, Jean Michel Torrenti, Fragkoulis Kanavaris, Miguel Azenha, Fangjie Chen, Shintaro Ito

Identifiant HAL : HAL identifier : HAL identificar : hal-04493430

Références bibliographiques : References : Referencias : Agnieszka Jędrzejewska, Mariusz Zych, Jean Michel Torrenti, Fragkoulis Kanavaris, Miguel Azenha, et al.. Practical insights on standardised models for estimation of crack width due to imposed strains in edge-restrained reinforced concrete elements. Engineering Structures, 2024, 305, pp.117757. ⟨10.1016/j.engstruct.2024.117757⟩. ⟨hal-04493430⟩

DOI : 10.1016/j.engstruct.2024.117757

Début de résumé : Short abstract : Breve resumen : The paper presents a critical study on the predictive capacity of standardised methods for crack width calculations in edge-restrained reinforced concrete elements subjected to imposed strains. The aim of the presented integrative analysis was to reach global understanding of the issue of restraint-induced cracking from the point of view of SLS design and to build a sound basis for future developments of new models. The study covered relevant methods from Europe, Australia, Japan and the USA. The study was performed on three distinct case studies: (i) a demonstration example; (ii) a massive containment wall; and (iii) a heavily-reinforced tank wall segment. It was concluded that a model for crack width control in edge-restrained elements should consider the stage of cracking and be generalised for possible geometries and reinforcement. Agreement must be made on the properties of concrete applied in the design, including effective tensile strength, effective modulus of elasticity (to account for creep) and the level of strain relieve after crack formation with its effect on the crack width.

Résumé : Abstract : Resumen : The paper presents a critical study on the predictive capacity of standardised methods for crack width calculations in edge-restrained reinforced concrete elements subjected to imposed strains. The aim of the presented integrative analysis was to reach global understanding of the issue of restraint-induced cracking from the point of view of SLS design and to build a sound basis for future developments of new models. The study covered relevant methods from Europe, Australia, Japan and the USA. The study was performed on three distinct case studies: (i) a demonstration example; (ii) a massive containment wall; and (iii) a heavily-reinforced tank wall segment. It was concluded that a model for crack width control in edge-restrained elements should consider the stage of cracking and be generalised for possible geometries and reinforcement. Agreement must be made on the properties of concrete applied in the design, including effective tensile strength, effective modulus of elasticity (to account for creep) and the level of strain relieve after crack formation with its effect on the crack width.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Pore crystallization and expansion of cement pastes in sulfate solutions with and without chlorides

Auteur(s) : Author(s) : Autor(es) : Bo Ran, Othman Omikrine Metalssi, Teddy Fen-Chong, Patrick Dangla, Kefei Li

Identifiant HAL : HAL identifier : HAL identificar : hal-04779625

Références bibliographiques : References : Referencias : Bo Ran, Othman Omikrine Metalssi, Teddy Fen-Chong, Patrick Dangla, Kefei Li. Pore crystallization and expansion of cement pastes in sulfate solutions with and without chlorides. Cement and Concrete Research, 2023, 166, pp.18. ⟨10.1016/j.cemconres.2023.107099⟩. ⟨hal-04779625⟩

DOI : 10.1016/j.cemconres.2023.107099

Début de résumé : Short abstract : Breve resumen : The pore crystallization of ettringite (AFt) and the material expansion are investigated for cement paste subject to external sulfate attack with and without chlorides. Specimens of 2mm thickness were exposed to solutions of 10g/L Na 2 SO 4 , 10g/L Na 2 SO 4 + 10g/L NaCl and 10g/L Na 2 SO 4 + 19g/L NaCl. The evolutions of AFt formation, pore structure, transport property and specimen expansion were characterized through 27 Al NMR, MIP, DVS and micrometer measurements. The analysis of results shows that: (1) chlorides decrease the AFt formation rate and the expansion capacity through depressing the supersaturation of AFt crystals; (2) AFt crystallization alters the pore structure in the whole pore size range, especially through the blockage of "ink-bottle" pores in micropore range; (3) AFt crystals change the vapour diffusivity by pore-filling and microcracking, and the linear stage of expansion is well captured by poromechanics with pore crystallization pressure incorporated.

Résumé : Abstract : Resumen : The pore crystallization of ettringite (AFt) and the material expansion are investigated for cement paste subject to external sulfate attack with and without chlorides. Specimens of 2mm thickness were exposed to solutions of 10g/L Na 2 SO 4 , 10g/L Na 2 SO 4 + 10g/L NaCl and 10g/L Na 2 SO 4 + 19g/L NaCl. The evolutions of AFt formation, pore structure, transport property and specimen expansion were characterized through 27 Al NMR, MIP, DVS and micrometer measurements. The analysis of results shows that: (1) chlorides decrease the AFt formation rate and the expansion capacity through depressing the supersaturation of AFt crystals; (2) AFt crystallization alters the pore structure in the whole pore size range, especially through the blockage of "ink-bottle" pores in micropore range; (3) AFt crystals change the vapour diffusivity by pore-filling and microcracking, and the linear stage of expansion is well captured by poromechanics with pore crystallization pressure incorporated.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

On the long-term delayed strain of concrete structures

Auteur(s) : Author(s) : Autor(es) : Abudushalamu Aili, Jean-Michel Torrenti, Jean-Philippe Sellin, Jean-François Barthélémy, Matthieu Vandamme

Identifiant HAL : HAL identifier : HAL identificar : hal-03923957

Références bibliographiques : References : Referencias : Abudushalamu Aili, Jean-Michel Torrenti, Jean-Philippe Sellin, Jean-François Barthélémy, Matthieu Vandamme. On the long-term delayed strain of concrete structures. Cement and Concrete Research, 2023, 165, pp.107086. ⟨10.1016/j.cemconres.2022.107086⟩. ⟨hal-03923957⟩

DOI : 10.1016/j.cemconres.2022.107086

Début de résumé : Short abstract : Breve resumen : Creep and shrinkage of concrete are essential for the safety assessment of large civil engineering structures. The present paper presents two different approaches to predicting the delayed strain considering a single material point to represent the structure. The first one is a decoupled approach, such as design codes, that splits the delayed strain into four components and predicts each of them as a function of several parameters such as concrete strength. In the second approach, delayed strain is modeled as the viscoelastic response of concrete to applied external loads and/or internal hygric stresses. The advantages and inconveniences of both methods are discussed. In the end, delayed strains of concrete are predicted using these approaches for two examples of real structures: a prestressed concrete bridge and a mock-up of a biaxially prestressed containment building.

Résumé : Abstract : Resumen : Creep and shrinkage of concrete are essential for the safety assessment of large civil engineering structures. The present paper presents two different approaches to predicting the delayed strain considering a single material point to represent the structure. The first one is a decoupled approach, such as design codes, that splits the delayed strain into four components and predicts each of them as a function of several parameters such as concrete strength. In the second approach, delayed strain is modeled as the viscoelastic response of concrete to applied external loads and/or internal hygric stresses. The advantages and inconveniences of both methods are discussed. In the end, delayed strains of concrete are predicted using these approaches for two examples of real structures: a prestressed concrete bridge and a mock-up of a biaxially prestressed containment building.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Modelling of viscoelastic properties and crack growth in bituminous mixtures: Application to the simulation of crack growth in semi-circular samples subjected to oxidative ageing

Auteur(s) : Author(s) : Autor(es) : Akoêtê Bernus Kouevidjin, Jean-François Barthélémy, Saannibe Ciryle Somé, Hachmi Ben Dhia, Virginie Mouillet

Identifiant HAL : HAL identifier : HAL identificar : hal-04443689

Références bibliographiques : References : Referencias : Akoêtê Bernus Kouevidjin, Jean-François Barthélémy, Saannibe Ciryle Somé, Hachmi Ben Dhia, Virginie Mouillet. Modelling of viscoelastic properties and crack growth in bituminous mixtures: Application to the simulation of crack growth in semi-circular samples subjected to oxidative ageing. Engineering Fracture Mechanics, 2022, 271, pp.108580. ⟨10.1016/j.engfracmech.2022.108580⟩. ⟨hal-04443689⟩

DOI : 10.1016/j.engfracmech.2022.108580

Début de résumé : Short abstract : Breve resumen : This paper presents the development of a mechanical crack propagation model coupling viscoelasticity and the extended Griffith’s criterion to the dissipative medium. The applications are related to the study of mode I cracking of bituminous materials subjected to loading rates under intermediate temperature condition and long term ageing duration. The viscoelastic behaviour of these materials based on a Generalized Maxwell (GM) model is presented and a discretized form of the state equation based on the exponential algorithm is given. The simulation of the complex modulus test is used to validate the proposed discretized law. Then, the thermodynamic framework of the Griffith criterion extended to the GM’s model is revisited. A crack growth criterion is derived involving the viscoelastic energy release rate () as a thermodynamic driving force capped by a resistance strength (-curve). Analytical and numerical implementations of the on a semi-circular bending geometry (SCB) are presented. SCB fracture tests following a standard experimental protocol are then simulated. The resistance strength parameters taking into account the fracture process zone effect are identified by an optimization technique resulting in a good agreement between the test results and the numerical simulations. This study demonstrates that the proposed approach can account for the ductile fracture properties of bituminous mixes.

Résumé : Abstract : Resumen : This paper presents the development of a mechanical crack propagation model coupling viscoelasticity and the extended Griffith’s criterion to the dissipative medium. The applications are related to the study of mode I cracking of bituminous materials subjected to loading rates under intermediate temperature condition and long term ageing duration. The viscoelastic behaviour of these materials based on a Generalized Maxwell (GM) model is presented and a discretized form of the state equation based on the exponential algorithm is given. The simulation of the complex modulus test is used to validate the proposed discretized law. Then, the thermodynamic framework of the Griffith criterion extended to the GM’s model is revisited. A crack growth criterion is derived involving the viscoelastic energy release rate () as a thermodynamic driving force capped by a resistance strength (-curve). Analytical and numerical implementations of the on a semi-circular bending geometry (SCB) are presented. SCB fracture tests following a standard experimental protocol are then simulated. The resistance strength parameters taking into account the fracture process zone effect are identified by an optimization technique resulting in a good agreement between the test results and the numerical simulations. This study demonstrates that the proposed approach can account for the ductile fracture properties of bituminous mixes.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Mechanical properties, carbon footprint and cost of ultra-high performance concrete containing ground granulated blast furnace slag

Auteur(s) : Author(s) : Autor(es) : Soufien Moula, Amor Ben Fraj, Thomas Wattez, Marwen Bouasker, Nizar Bel Hadj Ali

Identifiant HAL : HAL identifier : HAL identificar : hal-04563396

Références bibliographiques : References : Referencias : Soufien Moula, Amor Ben Fraj, Thomas Wattez, Marwen Bouasker, Nizar Bel Hadj Ali. Mechanical properties, carbon footprint and cost of ultra-high performance concrete containing ground granulated blast furnace slag. Journal of Building Engineering, In press, 79, pp.107796. ⟨10.1016/j.jobe.2023.107796⟩. ⟨hal-04563396⟩

DOI : 10.1016/j.jobe.2023.107796

Début de résumé : Short abstract : Breve resumen : This paper deals with the possibility of formulating low-carbon UHPC by replacing cement with ground granulated blast furnace slag (GGBS). Slags of two fineness levels (420 m²/kg (SL1) and 700 m²/kg (SL2), respectively) are incorporated as volume replacements for cement at 30% and 50%. The possibility of completely replacing silica fume (SF) with superfine slag (SL2) in UHPC is also investigated. The results show that reducing the SF allows for the production of UHPC with satisfactory mechanical properties. The incorporation of 30% of GGBS (SL1 or SL2) accelerates the hydration process due to the reduced SP content and the nucleation site effect, which improves long-term compressive strength. In the presence of a high level of ordinary slag (50% of SL1), the dilution effect dominates and a decrease in compressive strength can be observed at all ages. Due to the physical effect of superfine slag, 30% of SL2 yields a high 28-day compressive strength (151.2 vs. 136.5 MPa for the SL2-based reference mix) despite the absence of SF particles. The relatively low bound water content, as determined by thermogravimetric analysis (TGA), indicates the presence of a large amount of unreacted cement, which contributes to the improved mechanical performance of UHPC mixes. A 28-day splitting tensile strength greater than 7 MPa is measured across all UHPC produced, with a maximum value of 9.2 MPa for concrete containing 30% of SL2 and without SF. A 50% SL2 UHPC with a very low carbon dioxide index (approx. 4.15 kg/m3/MPa) and a compressive strength of 139 MPa, similar to the SF-based reference mix, have indeed been achieved. However, this mixture is found to be the most expensive (at 496 €/m3), due to the high cost of superfine slag, in comparison with cement.

Résumé : Abstract : Resumen : This paper deals with the possibility of formulating low-carbon UHPC by replacing cement with ground granulated blast furnace slag (GGBS). Slags of two fineness levels (420 m²/kg (SL1) and 700 m²/kg (SL2), respectively) are incorporated as volume replacements for cement at 30% and 50%. The possibility of completely replacing silica fume (SF) with superfine slag (SL2) in UHPC is also investigated. The results show that reducing the SF allows for the production of UHPC with satisfactory mechanical properties. The incorporation of 30% of GGBS (SL1 or SL2) accelerates the hydration process due to the reduced SP content and the nucleation site effect, which improves long-term compressive strength. In the presence of a high level of ordinary slag (50% of SL1), the dilution effect dominates and a decrease in compressive strength can be observed at all ages. Due to the physical effect of superfine slag, 30% of SL2 yields a high 28-day compressive strength (151.2 vs. 136.5 MPa for the SL2-based reference mix) despite the absence of SF particles. The relatively low bound water content, as determined by thermogravimetric analysis (TGA), indicates the presence of a large amount of unreacted cement, which contributes to the improved mechanical performance of UHPC mixes. A 28-day splitting tensile strength greater than 7 MPa is measured across all UHPC produced, with a maximum value of 9.2 MPa for concrete containing 30% of SL2 and without SF. A 50% SL2 UHPC with a very low carbon dioxide index (approx. 4.15 kg/m3/MPa) and a compressive strength of 139 MPa, similar to the SF-based reference mix, have indeed been achieved. However, this mixture is found to be the most expensive (at 496 €/m3), due to the high cost of superfine slag, in comparison with cement.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Mechanical Behavior Analysis of Lightweight Concrete Reinforced by Metalized Plastic Waste Fibers

Auteur(s) : Author(s) : Autor(es) : Maher Chakhari, Nawel Salem, Rachida Idir, Jamel Neji

Identifiant HAL : HAL identifier : HAL identificar : hal-04790180

Références bibliographiques : References : Referencias : Maher Chakhari, Nawel Salem, Rachida Idir, Jamel Neji. Mechanical Behavior Analysis of Lightweight Concrete Reinforced by Metalized Plastic Waste Fibers. International Journal of Engineering Research in Africa , 2024, 71, pp.45-60. ⟨10.4028/p-NGvb4Z⟩. ⟨hal-04790180⟩

DOI : 10.4028/p-NGvb4Z

Début de résumé : Short abstract : Breve resumen : This study evaluates the impact of adding metalized plastic waste (MPW) fibers to lightweight concrete that is used as a filler material in building slopes and bridge ramps. The goal is to open up new opportunities for recycling plastic waste and promote a more sustainable and productive construction industry. This study examined the mechanical behavior of lightweight concrete (LC) at 3, 28, and 90 days, both with and without MPW fiber (1%, 2%, and 3%). Compression tests, 3-point bending tests, and pull-out tests were used to measure the fibers' compressive strength, flexural strength, and maximum load-bearing capacity, respectively. According to the results, the compressive strength (CS) and elasticity modulus (MOE) decreased with increasing fiber content when MPW fiber was added. In the long term, the CS and MOE decrease for the LC containing 3% MPW fiber was 8% and 7%, respectively, lower than for the control concrete. At 90 days, the flexural strength of the LC with 1% MPW fiber was marginally higher than that of the control concrete, rising by 2.40%. After this initial rise, however, the flexural strength declined as the fiber concentration increased, eventually reaching an 8% reduction for LC with 3% MPW fiber.The optimum method for determining maximal load-bearing and comprehending the deformation mechanism is hence the fiber pull-out test. The microstructure study of the LC examined how the pull-out test affected the quality of bonding at fiber-matrix interfaces. The tensile and flexural strength of lightweight concrete are enhanced by MPW fiber's ability to bear significant pulling stress.

Résumé : Abstract : Resumen : This study evaluates the impact of adding metalized plastic waste (MPW) fibers to lightweight concrete that is used as a filler material in building slopes and bridge ramps. The goal is to open up new opportunities for recycling plastic waste and promote a more sustainable and productive construction industry. This study examined the mechanical behavior of lightweight concrete (LC) at 3, 28, and 90 days, both with and without MPW fiber (1%, 2%, and 3%). Compression tests, 3-point bending tests, and pull-out tests were used to measure the fibers' compressive strength, flexural strength, and maximum load-bearing capacity, respectively. According to the results, the compressive strength (CS) and elasticity modulus (MOE) decreased with increasing fiber content when MPW fiber was added. In the long term, the CS and MOE decrease for the LC containing 3% MPW fiber was 8% and 7%, respectively, lower than for the control concrete. At 90 days, the flexural strength of the LC with 1% MPW fiber was marginally higher than that of the control concrete, rising by 2.40%. After this initial rise, however, the flexural strength declined as the fiber concentration increased, eventually reaching an 8% reduction for LC with 3% MPW fiber.The optimum method for determining maximal load-bearing and comprehending the deformation mechanism is hence the fiber pull-out test. The microstructure study of the LC examined how the pull-out test affected the quality of bonding at fiber-matrix interfaces. The tensile and flexural strength of lightweight concrete are enhanced by MPW fiber's ability to bear significant pulling stress.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

L’utilisation du verre dans les bétons, une alternative pour un recyclage massif

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Martin Cyr, Arezki Tagnit-Hamou

Identifiant HAL : HAL identifier : HAL identificar : hal-04791157

Références bibliographiques : References : Referencias : Rachida Idir, Martin Cyr, Arezki Tagnit-Hamou. L’utilisation du verre dans les bétons, une alternative pour un recyclage massif. Recylage et valorisation, 2022, 76, pp.30-33. ⟨hal-04791157⟩

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Life cycle assessment of the first road constrcuted in Tunisia including recycled aggregates: Focus on recycled aggregates from deconstructed concrete

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Marianne Villey, Zakaria Jaouadi, Oumaya Yazoghli Marzouk

Identifiant HAL : HAL identifier : HAL identificar : hal-04791360

Références bibliographiques : References : Referencias : Rachida Idir, Marianne Villey, Zakaria Jaouadi, Oumaya Yazoghli Marzouk. Life cycle assessment of the first road constrcuted in Tunisia including recycled aggregates: Focus on recycled aggregates from deconstructed concrete. 19th International Symposium on Waste Management and Sustainable Landfilling, Oct 2023, Sardinia, Italy. ⟨hal-04791360⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Laitier alcali-activé : du laboratoire aux applications industrielles

Auteur(s) : Author(s) : Autor(es) : Martin Cyr, Patrick Azar, Gabriel Samson, Cédric Patapy, Artur Kiiashko, Mohend Chaouche, François Cussigh, Laurent Frouin, Virginie Benavent, Hugo Lahalle, Vincent Trincal, Bastien Balsamo, Rachida Idir

Identifiant HAL : HAL identifier : HAL identificar : hal-03879576

Références bibliographiques : References : Referencias : Martin Cyr, Patrick Azar, Gabriel Samson, Cédric Patapy, Artur Kiiashko, et al.. Laitier alcali-activé : du laboratoire aux applications industrielles. NOMAD 2022 - 4e conférence internationale francophone Nouveaux Matériaux et Durabilité, IMT Mines Alès; LMGC; LIFAM, Nov 2022, Montpellier, France. ⟨hal-03879576⟩

Début de résumé : Short abstract : Breve resumen : Ce travail présente différentes étapes du développement d'un laitier alcali-activé au carbonate de sodium, de ses propriétés d'usage lorsqu'utilisé dans les bétons, à sa durabilité. Les résultats de ces essais ont permis de mettre en place une évaluation technique européenne (ETE), ce qui a mené par la suite à plusieurs applications industrielles. Cette démarche illustre le cheminement de la mise au point de nouveaux liants bas-carbone pour la construction.

Résumé : Abstract : Resumen : Ce travail présente différentes étapes du développement d'un laitier alcali-activé au carbonate de sodium, de ses propriétés d'usage lorsqu'utilisé dans les bétons, à sa durabilité. Les résultats de ces essais ont permis de mettre en place une évaluation technique européenne (ETE), ce qui a mené par la suite à plusieurs applications industrielles. Cette démarche illustre le cheminement de la mise au point de nouveaux liants bas-carbone pour la construction.

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

L'utilisation du verre de recyclage dans les matériaux cimentaires et alcali-activés

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Louise Lemesre, Bathyle Hery, Thomas Poinot, André Carles-Gibergues, Arezki Tagnit-Hamou, Martin Cyr

Identifiant HAL : HAL identifier : HAL identificar : hal-03881447

Références bibliographiques : References : Referencias : Rachida Idir, Louise Lemesre, Bathyle Hery, Thomas Poinot, André Carles-Gibergues, et al.. L'utilisation du verre de recyclage dans les matériaux cimentaires et alcali-activés. NOMAD 2022 - 4e conférence internationale francophone Nouveaux Matériaux et Durabilité, IMT Mines Alès; LMGC; LIFAM, Nov 2022, Montpellier, France. ⟨hal-03881447⟩

Début de résumé : Short abstract : Breve resumen : Cet article présente un bilan de plusieurs travaux montrant qu'il est possible de valoriser le verre issu du recyclage dans les matériaux cimentaires et alcali-activés. En matrice cimentaire, le verre de recyclage présente une activité pouzzolanique qui augmente avec la finesse de ses particules. Néanmoins, il n'est pas nécessaire de l'utiliser uniquement sous forme de fines pour sa valorisation. Ainsi, jusqu'à un diamètre moyen de grain voisin de 1mm, aucun gonflement dû à la réaction alcali-silice n'apparait. Pour des diamètres supérieurs, la combinaison de sable de verre avec des fines de verre permet de limiter les expansions des mortiers dus à l'alcali-réaction des grosses particules supérieures à 1mm. L'utilisation combinée des fines et des granulats de verre permet donc de concilier les réactions pouzzolanique et alcalisilice au sein de la même matrice. En milieu alcali-activé, le verre permet d'obtenir de fortes résistances à long terme, mais parmi les 5 activants étudiés (ciment, silicate de sodium, carbonate de sodium, hydroxyde de sodium, hydroxyde de potassium), seul le ciment permet d'obtenir des résistances à la compression à jeune âge (2 et 7 jours) à température ambiante, probablement grâce à la seule activité hydraulique du ciment. Avec les autres activants, une température de 40°C ou 60°C est nécessaire mais suffisante pour obtenir des résistances à jeune âge très élevées, essentiellement quand du verre très fin est utilisé.

Résumé : Abstract : Resumen : Cet article présente un bilan de plusieurs travaux montrant qu'il est possible de valoriser le verre issu du recyclage dans les matériaux cimentaires et alcali-activés. En matrice cimentaire, le verre de recyclage présente une activité pouzzolanique qui augmente avec la finesse de ses particules. Néanmoins, il n'est pas nécessaire de l'utiliser uniquement sous forme de fines pour sa valorisation. Ainsi, jusqu'à un diamètre moyen de grain voisin de 1mm, aucun gonflement dû à la réaction alcali-silice n'apparait. Pour des diamètres supérieurs, la combinaison de sable de verre avec des fines de verre permet de limiter les expansions des mortiers dus à l'alcali-réaction des grosses particules supérieures à 1mm. L'utilisation combinée des fines et des granulats de verre permet donc de concilier les réactions pouzzolanique et alcalisilice au sein de la même matrice. En milieu alcali-activé, le verre permet d'obtenir de fortes résistances à long terme, mais parmi les 5 activants étudiés (ciment, silicate de sodium, carbonate de sodium, hydroxyde de sodium, hydroxyde de potassium), seul le ciment permet d'obtenir des résistances à la compression à jeune âge (2 et 7 jours) à température ambiante, probablement grâce à la seule activité hydraulique du ciment. Avec les autres activants, une température de 40°C ou 60°C est nécessaire mais suffisante pour obtenir des résistances à jeune âge très élevées, essentiellement quand du verre très fin est utilisé.

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Influence of the Ambient Relative Humidity on the Very-Long-Term DEF

Auteur(s) : Author(s) : Autor(es) : Thierry Houndonougbo, Boumediene Nedjar, Loic Divet, Jean-Michel Torrenti

Identifiant HAL : HAL identifier : HAL identificar : hal-04283779

Références bibliographiques : References : Referencias : Thierry Houndonougbo, Boumediene Nedjar, Loic Divet, Jean-Michel Torrenti. Influence of the Ambient Relative Humidity on the Very-Long-Term DEF. Construction Materials, 2023, 3 (4), pp.405-413. ⟨10.3390/constrmater3040026⟩. ⟨hal-04283779⟩

DOI : 10.3390/constrmater3040026

Début de résumé : Short abstract : Breve resumen : Relative humidity is a key parameter for the development of delayed ettringite formation (DEF). Here, new results of very-long-term experiments (10 years) are presented. It is observed that for a relative humidity of 96%, swelling could occur after several years but with a slower kinetics. A model coupling the kinetics of swelling with the internal relative humidity is presented. It is shown that this model can reproduce the experimental behavior.

Résumé : Abstract : Resumen : Relative humidity is a key parameter for the development of delayed ettringite formation (DEF). Here, new results of very-long-term experiments (10 years) are presented. It is observed that for a relative humidity of 96%, swelling could occur after several years but with a slower kinetics. A model coupling the kinetics of swelling with the internal relative humidity is presented. It is shown that this model can reproduce the experimental behavior.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Improvement of the compressive strength of recycled aggregate concretes and relative effects on durability properties

Auteur(s) : Author(s) : Autor(es) : Ayodele Adessina, Amor Ben Fraj, Jean-François Barthélémy

Identifiant HAL : HAL identifier : HAL identificar : hal-04083455

Références bibliographiques : References : Referencias : Ayodele Adessina, Amor Ben Fraj, Jean-François Barthélémy. Improvement of the compressive strength of recycled aggregate concretes and relative effects on durability properties. Construction and Building Materials, 2023, 384, pp.131447. ⟨10.1016/j.conbuildmat.2023.131447⟩. ⟨hal-04083455⟩

DOI : 10.1016/j.conbuildmat.2023.131447

Début de résumé : Short abstract : Breve resumen : he present paper deals with the problem of the compensation of the mechanical properties of recycled aggregate concretes (RAC) by adjusting the effective water-to-cement ratio. For this purpose, two substitution rates (60% and 100%) of natural aggregates by recycled ones are first considered and the loss rates of the compressive strength and the elastic modulus of the relative RAC are quantified. In the second part, the improvement of the 28 days compressive strength thanks to the water-to-cement ratio adjustment is proceeded and the effect of this process on the mechanical (elastic modulus), physical and durability properties (water accessible porosity, total shrinkage, chloride diffusion and carbonation) is quantified and presented for discussion. Among many other results, the compensation of the compressive strength (by adjusting the effective water-to-cement ratio from 0.42 to 0.35 for instance) is reported to be insufficient to compensate simultaneously the physical, mechanical and durability properties of the resulting recycled aggregate concrete. Finally, a micromechanics-based model is developed and fed with experimental data collected on the microstructure at different scales. Compared to the macroscopic mechanical properties, the predictions of the established model are shown to express with a good accuracy the effective elastic properties of RAC undergoing the compensation process.

Résumé : Abstract : Resumen : he present paper deals with the problem of the compensation of the mechanical properties of recycled aggregate concretes (RAC) by adjusting the effective water-to-cement ratio. For this purpose, two substitution rates (60% and 100%) of natural aggregates by recycled ones are first considered and the loss rates of the compressive strength and the elastic modulus of the relative RAC are quantified. In the second part, the improvement of the 28 days compressive strength thanks to the water-to-cement ratio adjustment is proceeded and the effect of this process on the mechanical (elastic modulus), physical and durability properties (water accessible porosity, total shrinkage, chloride diffusion and carbonation) is quantified and presented for discussion. Among many other results, the compensation of the compressive strength (by adjusting the effective water-to-cement ratio from 0.42 to 0.35 for instance) is reported to be insufficient to compensate simultaneously the physical, mechanical and durability properties of the resulting recycled aggregate concrete. Finally, a micromechanics-based model is developed and fed with experimental data collected on the microstructure at different scales. Compared to the macroscopic mechanical properties, the predictions of the established model are shown to express with a good accuracy the effective elastic properties of RAC undergoing the compensation process.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Impact of leaching and chlorides on sulfate attack for cement paste

Auteur(s) : Author(s) : Autor(es) : Bo Ran, Othman Omikrine Metalssi, Teddy Fen-Chong, Patrick Dangla, Kefei Li

Identifiant HAL : HAL identifier : HAL identificar : hal-04779590

Références bibliographiques : References : Referencias : Bo Ran, Othman Omikrine Metalssi, Teddy Fen-Chong, Patrick Dangla, Kefei Li. Impact of leaching and chlorides on sulfate attack for cement paste. Construction and Building Materials, 2023, 376, pp.130881. ⟨10.1016/j.conbuildmat.2023.130881⟩. ⟨hal-04779590⟩

DOI : 10.1016/j.conbuildmat.2023.130881

Début de résumé : Short abstract : Breve resumen : The effect of leaching and chlorides on the sulfate ingress and cracking damage is investigated for cement paste. Disk specimens with one-dimensional diffusion were exposed to solutions of 10g/L Na 2 SO 4 + pH of 13, 10g/L Na 2 SO 4 + pH of 7, and 10g/L Na 2 SO 4 + 19g/L NaCl + pH of 7. The sulfate ingress, surface cracks and mineral phase distribution were characterized through ICP, optical microscope, BSE and XRD. Further analysis is performed on the gypsum formation and crystallization. The experimental results and the analysis show that: (1) the leaching accelerates the sulfate ingress and induces the cracking damage with a spalling pattern; (2) the chlorides mitigate the sulfate ingress and the crack propagation, and the sulfates in turn reduce the chloride binding; (3) the gypsum detected in leaching case results from cracking and its crystallization in crack space is not likely to contribute to the crack propagation.

Résumé : Abstract : Resumen : The effect of leaching and chlorides on the sulfate ingress and cracking damage is investigated for cement paste. Disk specimens with one-dimensional diffusion were exposed to solutions of 10g/L Na 2 SO 4 + pH of 13, 10g/L Na 2 SO 4 + pH of 7, and 10g/L Na 2 SO 4 + 19g/L NaCl + pH of 7. The sulfate ingress, surface cracks and mineral phase distribution were characterized through ICP, optical microscope, BSE and XRD. Further analysis is performed on the gypsum formation and crystallization. The experimental results and the analysis show that: (1) the leaching accelerates the sulfate ingress and induces the cracking damage with a spalling pattern; (2) the chlorides mitigate the sulfate ingress and the crack propagation, and the sulfates in turn reduce the chloride binding; (3) the gypsum detected in leaching case results from cracking and its crystallization in crack space is not likely to contribute to the crack propagation.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Impact of Industrial Application of Fast Carbonation of Recycled Concrete Aggregates

Auteur(s) : Author(s) : Autor(es) : Laurent Izoret, Thomas Pernin, Jean-Marc Potier, Jean-Michel Torrenti

Identifiant HAL : HAL identifier : HAL identificar : hal-04503630

Références bibliographiques : References : Referencias : Laurent Izoret, Thomas Pernin, Jean-Marc Potier, Jean-Michel Torrenti. Impact of Industrial Application of Fast Carbonation of Recycled Concrete Aggregates. Applied Sciences, 2023, 13 (2), pp.849. ⟨10.3390/app13020849⟩. ⟨hal-04503630⟩

DOI : 10.3390/app13020849

Début de résumé : Short abstract : Breve resumen : The purpose of the national FastCarb project was to investigate whether the carbonation process of recycled concrete aggregates (RCAs) can be accelerated and benefit from both a carbon footprint point of view and the recycling of these aggregates in concrete. This article presents a part of the results obtained within the project. Two industrial demonstrators were carried out, which allowed for carbonating RCA and manufacturing concrete and concrete objects containing these aggregates. A life cycle analysis showed the importance of transport distances in the results concerning climate change. The project finally shows an interest in the technique for recycled concrete sands.

Résumé : Abstract : Resumen : The purpose of the national FastCarb project was to investigate whether the carbonation process of recycled concrete aggregates (RCAs) can be accelerated and benefit from both a carbon footprint point of view and the recycling of these aggregates in concrete. This article presents a part of the results obtained within the project. Two industrial demonstrators were carried out, which allowed for carbonating RCA and manufacturing concrete and concrete objects containing these aggregates. A life cycle analysis showed the importance of transport distances in the results concerning climate change. The project finally shows an interest in the technique for recycled concrete sands.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

High performance illitic clay-based geopolymer: Influence of thermal/mechanical activation on strength development

Auteur(s) : Author(s) : Autor(es) : Baptiste Luzu, Myriam Duc, Assia Djerbi, Laurent Gautron

Identifiant HAL : HAL identifier : HAL identificar : hal-04754326

Références bibliographiques : References : Referencias : Baptiste Luzu, Myriam Duc, Assia Djerbi, Laurent Gautron. High performance illitic clay-based geopolymer: Influence of thermal/mechanical activation on strength development. Applied Clay Science, 2024, 258 (2), pp.107445. ⟨10.1016/j.clay.2024.107445⟩. ⟨hal-04754326⟩

DOI : 10.1016/j.clay.2024.107445

Début de résumé : Short abstract : Breve resumen : Expansive soils commonly encountered beneath foundations often lead to structural issues inducing expensive repairs. With the increase of the frequency of dry summers and irregular rainfall patterns, the clayey and marly soils become more and more sensitive to shrinking and swelling phenomena. So to find solutions and improve the knowledge on such phenomena especially in temperate countries where the saturation state is considered as the usual soil state, the impact of the soil density on shrinkage was studied by varying the compaction mode and introducing a swelling step before shrinkage. As expected, dynamically or statically compacted clayey or marly soils exhibited high shrinkage deformation when the soil had a low density. The swelling before shrinkage impacted the soil structure but ultimately had a low effect on shrinkage deformation. Swelling deformation was also influenced by density; the denser the soil, the more sensitive the compacted soil became to swelling. Furthermore, compaction modes induced differences in swelling or shrinkage amplitude that couldn’t be explained by microstructural observations. Finally, results demonstrated that intact soil behavior after shrinkage could be extrapolated from swelling–shrinkage tests conducted on remolded soil samples, thus decreasing the cost of field investigations.

Résumé : Abstract : Resumen : Expansive soils commonly encountered beneath foundations often lead to structural issues inducing expensive repairs. With the increase of the frequency of dry summers and irregular rainfall patterns, the clayey and marly soils become more and more sensitive to shrinking and swelling phenomena. So to find solutions and improve the knowledge on such phenomena especially in temperate countries where the saturation state is considered as the usual soil state, the impact of the soil density on shrinkage was studied by varying the compaction mode and introducing a swelling step before shrinkage. As expected, dynamically or statically compacted clayey or marly soils exhibited high shrinkage deformation when the soil had a low density. The swelling before shrinkage impacted the soil structure but ultimately had a low effect on shrinkage deformation. Swelling deformation was also influenced by density; the denser the soil, the more sensitive the compacted soil became to swelling. Furthermore, compaction modes induced differences in swelling or shrinkage amplitude that couldn’t be explained by microstructural observations. Finally, results demonstrated that intact soil behavior after shrinkage could be extrapolated from swelling–shrinkage tests conducted on remolded soil samples, thus decreasing the cost of field investigations.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Formulation of an ordinary geopolymer concrete within an ecodesign approach

Auteur(s) : Author(s) : Autor(es) : Daniella Gabra Gilada, Rachida Idir, Assia Djerbi, Teddy Fen-Chong, André Orcesi

Identifiant HAL : HAL identifier : HAL identificar : hal-04791632

Références bibliographiques : References : Referencias : Daniella Gabra Gilada, Rachida Idir, Assia Djerbi, Teddy Fen-Chong, André Orcesi. Formulation of an ordinary geopolymer concrete within an ecodesign approach. Eighth International Symposium on Life-Cycle Civil Engineering (IALCCE 2023), Jul 2023, Milan, Italy. ⟨hal-04791632⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Feasibility of using polyurethane waste in the form of granules for civil construction

Auteur(s) : Author(s) : Autor(es) : Thouraya Salem, Danah Shehadeh, Othmane Bouchenafa, Céline Florence

Identifiant HAL : HAL identifier : HAL identificar : hal-04493358

Références bibliographiques : References : Referencias : Thouraya Salem, Danah Shehadeh, Othmane Bouchenafa, Céline Florence. Feasibility of using polyurethane waste in the form of granules for civil construction. Journal of Material Cycles and Waste Management, 2023, 25 (6), pp.3812-3823. ⟨10.1007/s10163-023-01807-4⟩. ⟨hal-04493358⟩

DOI : 10.1007/s10163-023-01807-4

Début de résumé : Short abstract : Breve resumen : This paper investigates the feasibility of using industrially treated polyurethane waste in the form of granules (PUG) in substitution of sand for civil construction (blocks for load or non-load bearing walls, screed). Different PUG amounts were introduced into the cement-based mortar. The results show that 10 wt% PUG strongly reduces the workability and the mechanical strength (at 2 and 7 days) compared to a standard mortar (0 wt% PUG) due to the hydrophilic character of PUG. The mixture with 5 wt% PUG which performs better than 10 wt% PUG was optimized on the basis of workability and early age mechanical strength. It is found that among the tested parameters (superplasticizer (S) at different dosages, PUG pre-saturation, water addition, limestone), adding 1.5 wt% S gives the best performances. At 28 days, 5 wt% PUG with 1.5 wt% S reduced the mechanical strength (32 MPa and 6 MPa, respectively in compression and bending compared to 55 MPa and 9 MPa for the standard mortar) and increased the shrinkage. The dry density and the thermal conductivity were reduced respectively by 9% and 10%, which can be interesting for both off-site construction and plastic waste or mineral resources management.

Résumé : Abstract : Resumen : This paper investigates the feasibility of using industrially treated polyurethane waste in the form of granules (PUG) in substitution of sand for civil construction (blocks for load or non-load bearing walls, screed). Different PUG amounts were introduced into the cement-based mortar. The results show that 10 wt% PUG strongly reduces the workability and the mechanical strength (at 2 and 7 days) compared to a standard mortar (0 wt% PUG) due to the hydrophilic character of PUG. The mixture with 5 wt% PUG which performs better than 10 wt% PUG was optimized on the basis of workability and early age mechanical strength. It is found that among the tested parameters (superplasticizer (S) at different dosages, PUG pre-saturation, water addition, limestone), adding 1.5 wt% S gives the best performances. At 28 days, 5 wt% PUG with 1.5 wt% S reduced the mechanical strength (32 MPa and 6 MPa, respectively in compression and bending compared to 55 MPa and 9 MPa for the standard mortar) and increased the shrinkage. The dry density and the thermal conductivity were reduced respectively by 9% and 10%, which can be interesting for both off-site construction and plastic waste or mineral resources management.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Expertise du quai Hermann du Pasquier du Port du Havre

Auteur(s) : Author(s) : Autor(es) : Mohamed Belmokhtar, Jean-François Bouteloup, Béatrice Desrues, Laurent Gaillet, Bruno Godart, Christelle Herbin, Tony Pons, Mezgeen Rasol, Mickael Saillio, Franziska Schmidt, Yasmine Werghi, Sahar Zouari

Identifiant HAL : HAL identifier : HAL identificar : hal-03821301

Références bibliographiques : References : Referencias : Mohamed Belmokhtar, Jean-François Bouteloup, Béatrice Desrues, Laurent Gaillet, Bruno Godart, et al.. Expertise du quai Hermann du Pasquier du Port du Havre. Journées Ouvrages d'Art 2022, Sep 2022, Champs-sur-Marne, France. 1 p. ⟨hal-03821301⟩

Début de résumé : Short abstract : Breve resumen : Le quai Hermann du Pasquier du port du Havre, détruit à la fin de la deuxième guerre mondiale, a été reconstruit en 1954. Le tablier de ce quai, long de 1200 mètres, est composé de caissons de 25 mètres de long et 25 mètres de large, préfabriqués et transportés sur site. La précontrainte interne est tri-directionnelle dans ces caissons. En 2021, à l'occasion d'une modification de l'utilisation d'une partie du quai, l'établissement public du Grand Port Maritime du Havre a souhaité obtenir une réévaluation de la durabilité de l'ouvrage. Pour cela, différents essais et auscultations ont été menés : les essais à l'arbalète ont montré une perte de précontrainte d'environ 30% par rapport à la tension initiale. Des prélèvements de fils de précontrainte ont permis de connaitre l'état métallurgique de ceux-ci et de déterminer le type de corrosion les affectant. Le béton, lui, présente une résistance à la compression d'environ 30 MPa en moyenne, mais avec une dispersion non négligeable. Sans surprise, la corrosion par ions chlorures a été déterminée comme principal risque, et les modèles fib et El Farissi nous ont permis d'estimer le temps d'initiation de la corrosion.

Résumé : Abstract : Resumen : Le quai Hermann du Pasquier du port du Havre, détruit à la fin de la deuxième guerre mondiale, a été reconstruit en 1954. Le tablier de ce quai, long de 1200 mètres, est composé de caissons de 25 mètres de long et 25 mètres de large, préfabriqués et transportés sur site. La précontrainte interne est tri-directionnelle dans ces caissons. En 2021, à l'occasion d'une modification de l'utilisation d'une partie du quai, l'établissement public du Grand Port Maritime du Havre a souhaité obtenir une réévaluation de la durabilité de l'ouvrage. Pour cela, différents essais et auscultations ont été menés : les essais à l'arbalète ont montré une perte de précontrainte d'environ 30% par rapport à la tension initiale. Des prélèvements de fils de précontrainte ont permis de connaitre l'état métallurgique de ceux-ci et de déterminer le type de corrosion les affectant. Le béton, lui, présente une résistance à la compression d'environ 30 MPa en moyenne, mais avec une dispersion non négligeable. Sans surprise, la corrosion par ions chlorures a été déterminée comme principal risque, et les modèles fib et El Farissi nous ont permis d'estimer le temps d'initiation de la corrosion.

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Experimental investigation and micromechanical modeling of mechanical and durability properties of concrete based on shells from sediments

Auteur(s) : Author(s) : Autor(es) : Hamza Beddaa, Francis Lavergne, Amor Ben Fraj, Jean-François Barthélémy, Jean-Michel Torrenti

Identifiant HAL : HAL identifier : HAL identificar : hal-03747206

Références bibliographiques : References : Referencias : Hamza Beddaa, Francis Lavergne, Amor Ben Fraj, Jean-François Barthélémy, Jean-Michel Torrenti. Experimental investigation and micromechanical modeling of mechanical and durability properties of concrete based on shells from sediments. Cement and Concrete Composites, 2022, 133, pp.104684. ⟨10.1016/j.cemconcomp.2022.104684⟩. ⟨hal-03747206⟩

DOI : 10.1016/j.cemconcomp.2022.104684

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Evaluation of long-term aging of low-carbon cementitious materials under severe H2S impact in sewerage systems

Auteur(s) : Author(s) : Autor(es) : Janette Ayoub, Marielle Guéguen Minerbe, Tony Pons, Marcos Oliveira, Sabrina Guérin, Jeon Woong Kang, Mario Marchetti

Identifiant HAL : HAL identifier : HAL identificar : hal-04694789

Références bibliographiques : References : Referencias : Janette Ayoub, Marielle Guéguen Minerbe, Tony Pons, Marcos Oliveira, Sabrina Guérin, et al.. Evaluation of long-term aging of low-carbon cementitious materials under severe H2S impact in sewerage systems. Construction and Building Materials, 2024, 447, pp.138125. ⟨10.1016/j.conbuildmat.2024.138125⟩. ⟨hal-04694789⟩

DOI : 10.1016/j.conbuildmat.2024.138125

Début de résumé : Short abstract : Breve resumen : The durability of cementitious materials in harsh environments, like marine or sulfate-rich soils, is influenced by various factors, with bacteria playing a significant role alongside environmental chemistry. To address sustainability concerns, research focuses on developing cement mixes that reduce emissions and withstand aggressive conditions. New standards require testing these mixes. This study developed and tested low-carbon cement mixes (CEM III, CEM V, CAC, and CSS) under real sewer conditions enriched with H 2 S and bacteria for four years. The specimens underwent SEM-EDS, XRD, TGA-DTA, and µRaman analysis to enhance understanding of degradation processes by conducting detailed and localized characterization of both initial and newly formed phases. Through this analysis, the work offers a precise description of the effects of bio-alteration on various cement matrices, elucidating their reactions under such conditions. The analysis of mortar specimens has revealed the presence of expansive products such as gypsum besides various polymorphs of calcium carbonate.

Résumé : Abstract : Resumen : The durability of cementitious materials in harsh environments, like marine or sulfate-rich soils, is influenced by various factors, with bacteria playing a significant role alongside environmental chemistry. To address sustainability concerns, research focuses on developing cement mixes that reduce emissions and withstand aggressive conditions. New standards require testing these mixes. This study developed and tested low-carbon cement mixes (CEM III, CEM V, CAC, and CSS) under real sewer conditions enriched with H 2 S and bacteria for four years. The specimens underwent SEM-EDS, XRD, TGA-DTA, and µRaman analysis to enhance understanding of degradation processes by conducting detailed and localized characterization of both initial and newly formed phases. Through this analysis, the work offers a precise description of the effects of bio-alteration on various cement matrices, elucidating their reactions under such conditions. The analysis of mortar specimens has revealed the presence of expansive products such as gypsum besides various polymorphs of calcium carbonate.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Efficiency of the Impressed Current Cathodic Protection (ICCP) in reinforced concretes: Experimental and numerical investigation

Auteur(s) : Author(s) : Autor(es) : Akoêtê Bernus Kouevidjin, Ayodele Adessina, Jean-François Barthélémy, Juan Carpio-Perez, Amor Ben Fraj, Alexandre Pavoine

Identifiant HAL : HAL identifier : HAL identificar : hal-04452166

Références bibliographiques : References : Referencias : Akoêtê Bernus Kouevidjin, Ayodele Adessina, Jean-François Barthélémy, Juan Carpio-Perez, Amor Ben Fraj, et al.. Efficiency of the Impressed Current Cathodic Protection (ICCP) in reinforced concretes: Experimental and numerical investigation. Electrochimica Acta, 2024, 480, pp.143923. ⟨10.1016/j.electacta.2024.143923⟩. ⟨hal-04452166⟩

DOI : 10.1016/j.electacta.2024.143923

Début de résumé : Short abstract : Breve resumen : In the present work, the efficiency of the Impressed Current Cathodic Protection (ICCP) applied to reinforced concretes is investigated. A comprehensive approach, combining experimental and numerical methodologies, is employed. The investigation focuses on a simplified system, represented by a reinforced concrete slab subjected to accelerated corrosion. Experimental tests are conducted to evaluate the initial condition of the system and subsequently examine different ICCP scenarios. Various parameters are considered, including the spatial arrangement of reference electrodes and activated titanium anodes, as well as the applied current intensity. The outcomes of these experiments are carefully analyzed to assess the influence of these parameters, and the results are presented for in-depth discussion. Finally, a theoretical model based on electrochemical interactions between the steel and the concrete is developed thanks to virtual work principle. Applied to the system under study, the predictions of the model are shown to give satisfactory results when compared to experimental data, demonstrating its reliability.

Résumé : Abstract : Resumen : In the present work, the efficiency of the Impressed Current Cathodic Protection (ICCP) applied to reinforced concretes is investigated. A comprehensive approach, combining experimental and numerical methodologies, is employed. The investigation focuses on a simplified system, represented by a reinforced concrete slab subjected to accelerated corrosion. Experimental tests are conducted to evaluate the initial condition of the system and subsequently examine different ICCP scenarios. Various parameters are considered, including the spatial arrangement of reference electrodes and activated titanium anodes, as well as the applied current intensity. The outcomes of these experiments are carefully analyzed to assess the influence of these parameters, and the results are presented for in-depth discussion. Finally, a theoretical model based on electrochemical interactions between the steel and the concrete is developed thanks to virtual work principle. Applied to the system under study, the predictions of the model are shown to give satisfactory results when compared to experimental data, demonstrating its reliability.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Effet du stéarate de calcium sur la microstructure de mortier à base d'acétate de cellulose

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Othman Omikrine-Metalssi, Teddy Fen-Chong

Identifiant HAL : HAL identifier : HAL identificar : hal-04329991

Références bibliographiques : References : Referencias : Joe Tannous, Thouraya Salem, Othman Omikrine-Metalssi, Teddy Fen-Chong. Effet du stéarate de calcium sur la microstructure de mortier à base d'acétate de cellulose. Congrès Français du Génie Civil : Ville du futur et changement climatique (CFGC 2023), augc; AFGC, May 2023, Gif-sur-Yvette, France. 9 p. ⟨hal-04329991⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Effet du stéarate de calcium et d’additions sur l’ouvrabilité et la résistance mécanique de mortiers d’acétate de cellulose

Auteur(s) : Author(s) : Autor(es) : Thouraya Salem, Joe Tannous, Sandrine Marceau, Othman Omikrine Metalssi, Fen-Chong Teddy

Identifiant HAL : HAL identifier : HAL identificar : hal-04206838

Références bibliographiques : References : Referencias : Thouraya Salem, Joe Tannous, Sandrine Marceau, Othman Omikrine Metalssi, Fen-Chong Teddy. Effet du stéarate de calcium et d’additions sur l’ouvrabilité et la résistance mécanique de mortiers d’acétate de cellulose. Academic Journal of Civil Engineering, 2022, 40 (1 Special Issue - RUGC 2022), pp. 100-103. ⟨10.26168/ajce.40.1.25⟩. ⟨hal-04206838⟩

DOI : 10.26168/ajce.40.1.25

Début de résumé : Short abstract : Breve resumen : Les mégots de cigarettes sont constitués en grande partie de fibres d’acétate de cellulose (AC) dont la valorisation permettrait de réduire la pollution de l’environnement. Dans cette étude, des mortiers incorporant 1,3 % de fibres d’AC (en masse de sable) ont été fabriqués. Dans un premier temps, pour réduire l’absorption d’eau des fibres, l’effet de différents taux de stéarate de calcium (SC) (0,5 % ; 1 % et 1,5 % en masse du ciment), avec et sans superplastifiant (SP), sur l’ouvrabilité et la résistance à la compression et à la flexion a été étudié. L’impact de l’ajout de fumée de silice et de métakaolin sur ces mêmes propriétés a été étudié dans un deuxième temps. Les résultats ont montré que l’ajout d’AC dégrade l’ouvrabilité et la résistance mécanique par rapport à un mortier normalisé et que l’ajout de SC et de 3 % de SP permet d’avoir de meilleures performances. L’ajout de 10 % de métakaolin en masse du ciment en combinaison avec 3 % de SP (sans SC) permet d’obtenir les meilleures performances.

Résumé : Abstract : Resumen : Les mégots de cigarettes sont constitués en grande partie de fibres d’acétate de cellulose (AC) dont la valorisation permettrait de réduire la pollution de l’environnement. Dans cette étude, des mortiers incorporant 1,3 % de fibres d’AC (en masse de sable) ont été fabriqués. Dans un premier temps, pour réduire l’absorption d’eau des fibres, l’effet de différents taux de stéarate de calcium (SC) (0,5 % ; 1 % et 1,5 % en masse du ciment), avec et sans superplastifiant (SP), sur l’ouvrabilité et la résistance à la compression et à la flexion a été étudié. L’impact de l’ajout de fumée de silice et de métakaolin sur ces mêmes propriétés a été étudié dans un deuxième temps. Les résultats ont montré que l’ajout d’AC dégrade l’ouvrabilité et la résistance mécanique par rapport à un mortier normalisé et que l’ajout de SC et de 3 % de SP permet d’avoir de meilleures performances. L’ajout de 10 % de métakaolin en masse du ciment en combinaison avec 3 % de SP (sans SC) permet d’obtenir les meilleures performances.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Effect of thermo-oxidative ageing on the rheological properties of bituminous binders and mixes: Experimental study and multi-scale modeling

Auteur(s) : Author(s) : Autor(es) : Saannibe Ciryle Somé, Jean-François Barthélémy, Virginie Mouillet, Ferhat Hammoum, Gang Liu

Identifiant HAL : HAL identifier : HAL identificar : hal-03711012

Références bibliographiques : References : Referencias : Saannibe Ciryle Somé, Jean-François Barthélémy, Virginie Mouillet, Ferhat Hammoum, Gang Liu. Effect of thermo-oxidative ageing on the rheological properties of bituminous binders and mixes: Experimental study and multi-scale modeling. Construction and Building Materials, 2022, 344, pp.128260. ⟨10.1016/j.conbuildmat.2022.128260⟩. ⟨hal-03711012⟩

DOI : 10.1016/j.conbuildmat.2022.128260

Début de résumé : Short abstract : Breve resumen : The multiscale modeling of the complex modulus and phase angle of aged hot and warm mix asphalt (HMA and WMA) and bituminous mortar AC02 is investigated in this study. Four thermo-oxidative ageing durations (0, 3, 6 and 9 days) are considered to investigate the long-term thermo-oxidative ageing based on a RILEM ageing procedure. The binders of the aged mixes are extracted and characterized. Moreover, RTFOT and PAV tests are carried out on fresh bitumen to simulate the long-term thermo-oxidative ageing of HMA and WMA. Rheological tests are performed at different temperatures and frequencies to determine the stiffness moduli of binders and mixes that are subsequently curve-fitted with the modified 2S2P1D model. The results show that the stiffness moduli of binders and mixes increase with the long-term thermo-oxidative ageing duration. This increase is more pronounced for WMA and their binders than HMA, this is probably due to the higher water content (5.5%) used for this type of mixture. Moreover, the increase of the stiffness modulus is shown to be related to parameters such as asphaltene content, carbonyl and sulfoxide indices. Finally, a multi-scale model which combines the Mori–Tanaka scheme at mastic and mortar scales and the self-consistent scheme at the mixture scale with possible grain–grain contact between the coarse aggregates, is implemented. It is able to account the evolution of the master curves of the stiffness moduli and the phase angles of the mixes based on bitumens’ and aggregates’ properties. The reliability of this multi-scale model is assessed through a comparison with experimental data, over a wide range of frequencies and temperatures.

Résumé : Abstract : Resumen : The multiscale modeling of the complex modulus and phase angle of aged hot and warm mix asphalt (HMA and WMA) and bituminous mortar AC02 is investigated in this study. Four thermo-oxidative ageing durations (0, 3, 6 and 9 days) are considered to investigate the long-term thermo-oxidative ageing based on a RILEM ageing procedure. The binders of the aged mixes are extracted and characterized. Moreover, RTFOT and PAV tests are carried out on fresh bitumen to simulate the long-term thermo-oxidative ageing of HMA and WMA. Rheological tests are performed at different temperatures and frequencies to determine the stiffness moduli of binders and mixes that are subsequently curve-fitted with the modified 2S2P1D model. The results show that the stiffness moduli of binders and mixes increase with the long-term thermo-oxidative ageing duration. This increase is more pronounced for WMA and their binders than HMA, this is probably due to the higher water content (5.5%) used for this type of mixture. Moreover, the increase of the stiffness modulus is shown to be related to parameters such as asphaltene content, carbonyl and sulfoxide indices. Finally, a multi-scale model which combines the Mori–Tanaka scheme at mastic and mortar scales and the self-consistent scheme at the mixture scale with possible grain–grain contact between the coarse aggregates, is implemented. It is able to account the evolution of the master curves of the stiffness moduli and the phase angles of the mixes based on bitumens’ and aggregates’ properties. The reliability of this multi-scale model is assessed through a comparison with experimental data, over a wide range of frequencies and temperatures.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Effect of human hair fibers on microstructural and mechanical properties of mortars

Auteur(s) : Author(s) : Autor(es) : Hussein Nasreddine, Thouraya Salem, Othman Omikrine-Metalssi, Teddy Fen-Chong

Identifiant HAL : HAL identifier : HAL identificar : hal-04329971

Références bibliographiques : References : Referencias : Hussein Nasreddine, Thouraya Salem, Othman Omikrine-Metalssi, Teddy Fen-Chong. Effect of human hair fibers on microstructural and mechanical properties of mortars. CFGC 2023, Congrès Français du Génie Civil : Ville du futur et changement climatique, AUGC; AFGC, May 2023, Gif-sur-Yvette, France. pp.1693. ⟨hal-04329971⟩

Début de résumé : Short abstract : Breve resumen : The building sector plays a major role in reducing greenhouse gas emissions and fighting climate change. Researchers are using waste materials to develop new mortars in order to reduce their environmental impact. Human hair fibers (HHF) accounts for 50% of hair salon waste and is currently incinerated for the most part. These natural fibers have properties suitable for use in construction. They have an elasticity and a tensile strength equivalent to that of copper wire for similar diameters. The purpose of this study is to determine whether the introduction of HHF into mortar enhances their mechanical properties. The effect of 0%, 1%, 1.5%, 2%, 2.5%, 3%, 4%, and 8% human hair by weight of cement on the workability, shrinkage, microstructural and mechanical properties of mortars was studied. A subsequent drop in workability values is found with the increase in the proportion of hair, which is due to the balling of HHF. Adding hair fibers was found to reduce the compressive and bending strength, to increase porosity but it improves the ductility at 4% and 8% HHF.

Résumé : Abstract : Resumen : The building sector plays a major role in reducing greenhouse gas emissions and fighting climate change. Researchers are using waste materials to develop new mortars in order to reduce their environmental impact. Human hair fibers (HHF) accounts for 50% of hair salon waste and is currently incinerated for the most part. These natural fibers have properties suitable for use in construction. They have an elasticity and a tensile strength equivalent to that of copper wire for similar diameters. The purpose of this study is to determine whether the introduction of HHF into mortar enhances their mechanical properties. The effect of 0%, 1%, 1.5%, 2%, 2.5%, 3%, 4%, and 8% human hair by weight of cement on the workability, shrinkage, microstructural and mechanical properties of mortars was studied. A subsequent drop in workability values is found with the increase in the proportion of hair, which is due to the balling of HHF. Adding hair fibers was found to reduce the compressive and bending strength, to increase porosity but it improves the ductility at 4% and 8% HHF.

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Effect of calcium stearate on cellulose acetate-based mortars

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Othman Omikrine Metalssi, Teddy Fen-Chong

Identifiant HAL : HAL identifier : HAL identificar : hal-04586299

Références bibliographiques : References : Referencias : Joe Tannous, Thouraya Salem, Othman Omikrine Metalssi, Teddy Fen-Chong. Effect of calcium stearate on cellulose acetate-based mortars. Journal of Cleaner Production, 2024, 460, pp.142588. ⟨10.1016/j.jclepro.2024.142588⟩. ⟨hal-04586299⟩

DOI : 10.1016/j.jclepro.2024.142588

Début de résumé : Short abstract : Breve resumen : The purpose of this study is to investigate the properties of cellulose acetate-based mortars with the addition of calcium stearate (CS), superplasticizer (SP) and metakaolin (MK). Previous research has shown that cellulose acetate (CA) fibers from industrial cigarette butts (CB) treatment can be incorporated into standard mortars at a rate of 1.3 wt%. CS was added in various proportions by weight (0.5, 1, 1.5 wt%), and their influence on cement hydration and microstructure was studied using various investigative techniques. The addition of CS was found to be beneficial in reducing the amount of water absorbed by CA, despite the significant absorption of these fibers. Furthermore, a CS rate of 1 wt% decreased CA-based mortar shrinkage. Additionally, 1 wt% CS improved by 18% the compressive strength of CA-based mortars manufactured with SP compared to the reference CA-mortar. CA fibers and CS seem to modify mortar microstructure by creating a plurimodal pore size distribution and reducing capillary pores. The CS addition, however, resulted in more cracks and reduced workability due to the weakening of the bond between the cement paste components. MK-mortars showed a slight 15% reduction in compressive strength and 13% reduction in bending strength; along with a 20% increase in shrinkage. By incorporating CA fibers as an additive along with CS or MK, CA-based mortars can improve some properties, including shrinkage and mechanical strength. Further, this approach offers a potential solution to CB pollution by reducing the environmental impact of this waste

Résumé : Abstract : Resumen : The purpose of this study is to investigate the properties of cellulose acetate-based mortars with the addition of calcium stearate (CS), superplasticizer (SP) and metakaolin (MK). Previous research has shown that cellulose acetate (CA) fibers from industrial cigarette butts (CB) treatment can be incorporated into standard mortars at a rate of 1.3 wt%. CS was added in various proportions by weight (0.5, 1, 1.5 wt%), and their influence on cement hydration and microstructure was studied using various investigative techniques. The addition of CS was found to be beneficial in reducing the amount of water absorbed by CA, despite the significant absorption of these fibers. Furthermore, a CS rate of 1 wt% decreased CA-based mortar shrinkage. Additionally, 1 wt% CS improved by 18% the compressive strength of CA-based mortars manufactured with SP compared to the reference CA-mortar. CA fibers and CS seem to modify mortar microstructure by creating a plurimodal pore size distribution and reducing capillary pores. The CS addition, however, resulted in more cracks and reduced workability due to the weakening of the bond between the cement paste components. MK-mortars showed a slight 15% reduction in compressive strength and 13% reduction in bending strength; along with a 20% increase in shrinkage. By incorporating CA fibers as an additive along with CS or MK, CA-based mortars can improve some properties, including shrinkage and mechanical strength. Further, this approach offers a potential solution to CB pollution by reducing the environmental impact of this waste

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Effect of an Early-Age Exposure on the Degradation Mechanisms of Cement Paste under External Sulfate Attack

Auteur(s) : Author(s) : Autor(es) : Othman Omikrine Metalssi, Rim Ragoug, Fabien Barberon, Jean-Baptiste D’espinose De Lacaillerie, Nicolas Roussel, Loïc Divet, Jean-Michel Torrenti

Identifiant HAL : HAL identifier : HAL identificar : hal-04209292

Références bibliographiques : References : Referencias : Othman Omikrine Metalssi, Rim Ragoug, Fabien Barberon, Jean-Baptiste D’espinose De Lacaillerie, Nicolas Roussel, et al.. Effect of an Early-Age Exposure on the Degradation Mechanisms of Cement Paste under External Sulfate Attack. Materials, 2023, 16 (17), pp.6013. ⟨10.3390/ma16176013⟩. ⟨hal-04209292⟩

DOI : 10.3390/ma16176013

Début de résumé : Short abstract : Breve resumen : Among the most significant causes of concrete degradation is ESA (external sulfate attack). The majority of studies are currently conducted on samples that have been saturated and matured. Concrete structures, however, are exposed to the environment once the formwork has been removed. The purpose of this study is to determine what effects early exposure to external sulfates may have on degradation mechanisms. Microstructure, physical, and chemical behavior are monitored using a variety of experimental techniques, including NMR (27Al and 29Si), ICP, XRD, MIP, and SEM. Based on expansion measurements, mature Portland cement paste, unlike the early-age case, degraded rapidly due to the presence of compressed ettringite and gypsum, highlighted by SEM analysis. During ESA, sulfate ions diffuse through the cement matrix and are bound by chemical agents. Chemical analyses indicate that the chemical mechanism varies with the duration of curing. At an early age, external sulfates and aluminates are the most important reagents. For matured cases, these reagents include external sulfates, calcium derived from CH dissolution, and aluminates derived from the total dissolution of AFm.

Résumé : Abstract : Resumen : Among the most significant causes of concrete degradation is ESA (external sulfate attack). The majority of studies are currently conducted on samples that have been saturated and matured. Concrete structures, however, are exposed to the environment once the formwork has been removed. The purpose of this study is to determine what effects early exposure to external sulfates may have on degradation mechanisms. Microstructure, physical, and chemical behavior are monitored using a variety of experimental techniques, including NMR (27Al and 29Si), ICP, XRD, MIP, and SEM. Based on expansion measurements, mature Portland cement paste, unlike the early-age case, degraded rapidly due to the presence of compressed ettringite and gypsum, highlighted by SEM analysis. During ESA, sulfate ions diffuse through the cement matrix and are bound by chemical agents. Chemical analyses indicate that the chemical mechanism varies with the duration of curing. At an early age, external sulfates and aluminates are the most important reagents. For matured cases, these reagents include external sulfates, calcium derived from CH dissolution, and aluminates derived from the total dissolution of AFm.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Early‐age cracking due to restraint: Laboratory and field investigations on the predictive capacity of the simplified method in Annex D of the future EC2

Auteur(s) : Author(s) : Autor(es) : Antonia Menga, Jean‐michel Torrenti, Terje Kanstad, Anja Birgitta Estensen Klausen

Identifiant HAL : HAL identifier : HAL identificar : hal-04678400

Références bibliographiques : References : Referencias : Antonia Menga, Jean‐michel Torrenti, Terje Kanstad, Anja Birgitta Estensen Klausen. Early‐age cracking due to restraint: Laboratory and field investigations on the predictive capacity of the simplified method in Annex D of the future EC2. Structural Concrete, 2024, pp.1-24. ⟨10.1002/suco.202400173⟩. ⟨hal-04678400⟩

DOI : 10.1002/suco.202400173

Début de résumé : Short abstract : Breve resumen : The Annex D of the future EC2 draft gives guidance on the evaluation of early‐age cracking of large structures due to restraint. In case of restrained conditions, compressive stresses are firstly generated in massive structures due to temperature increase, then tensile stresses are generated due to temperature decrease and shrinkage. Due to these tensile stresses, there is a risk of cracking which may be evaluated by the simplified method in Annex D. This method is currently verified against laboratory tests performed in the temperature‐stress testing machine and field cases on restrained concrete elements. The laboratory verification consisted of five approaches to consider different available input (modeled, assumed, or measured). The field investigation focused on the relation between the calculated cracking risk and the observed damage. The results show that the method has very good accuracy and captures with reasonable simplicity the mechanisms and the relations between the parameters involved.

Résumé : Abstract : Resumen : The Annex D of the future EC2 draft gives guidance on the evaluation of early‐age cracking of large structures due to restraint. In case of restrained conditions, compressive stresses are firstly generated in massive structures due to temperature increase, then tensile stresses are generated due to temperature decrease and shrinkage. Due to these tensile stresses, there is a risk of cracking which may be evaluated by the simplified method in Annex D. This method is currently verified against laboratory tests performed in the temperature‐stress testing machine and field cases on restrained concrete elements. The laboratory verification consisted of five approaches to consider different available input (modeled, assumed, or measured). The field investigation focused on the relation between the calculated cracking risk and the observed damage. The results show that the method has very good accuracy and captures with reasonable simplicity the mechanisms and the relations between the parameters involved.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Development of Sustainable Construction Materials from Inert Waste Mixtures Using the Mechanosynthesis Process

Auteur(s) : Author(s) : Autor(es) : Rabah Hamzaoui, Othmane Bouchenafa, Rachida Idir, Assia Djerbi, Teddy Fen-Chong, Céline Florence, François Boutin

Identifiant HAL : HAL identifier : HAL identificar : hal-04790069

Références bibliographiques : References : Referencias : Rabah Hamzaoui, Othmane Bouchenafa, Rachida Idir, Assia Djerbi, Teddy Fen-Chong, et al.. Development of Sustainable Construction Materials from Inert Waste Mixtures Using the Mechanosynthesis Process. Materials, 2024, 17 (17), pp.4301. ⟨10.3390/ma17174301⟩. ⟨hal-04790069⟩

DOI : 10.3390/ma17174301

Début de résumé : Short abstract : Breve resumen : This research investigates the potential of mechanosynthesis to transform inert waste mixtures into sustainable construction materials. Three waste streams were employed: recycled glass, recycled concrete, and excavated soils. Two alternative material formulations, F1 (50% recycled concrete, 30% recycled glass, 20% excavated soil) and F2 (60% excavated soil, 20% recycled concrete, 20% recycled glass), were developed. Cement pastes were produced by partially substituting cement (CEM I) with 50% of either F1 or F2. Characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (ATR-FTIR), and mechanical testing, were performed. Cement pastes incorporating milled waste materials exhibited significantly enhanced compressive strength compared to their unmilled counterparts. At 28 curing days, compressive strengths reached 44, 47, 45, and 49.7 MPa, and at 90 curing days, they increased to 47.5, 50, 55, and 61 MPa for milling conditions of 200 rpm for 5 min, 200 rpm for 15 min, 400 rpm for 5 min, and 400 rpm for 15 min, respectively. In addition, F1 formulations showed higher compressive strengths than the reference CEM II and CEM III pastes. These results highlight the efficacy of mechanosynthesis in valorizing construction waste, mitigating CO2 emissions, and creating environmentally friendly construction materials.

Résumé : Abstract : Resumen : This research investigates the potential of mechanosynthesis to transform inert waste mixtures into sustainable construction materials. Three waste streams were employed: recycled glass, recycled concrete, and excavated soils. Two alternative material formulations, F1 (50% recycled concrete, 30% recycled glass, 20% excavated soil) and F2 (60% excavated soil, 20% recycled concrete, 20% recycled glass), were developed. Cement pastes were produced by partially substituting cement (CEM I) with 50% of either F1 or F2. Characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (ATR-FTIR), and mechanical testing, were performed. Cement pastes incorporating milled waste materials exhibited significantly enhanced compressive strength compared to their unmilled counterparts. At 28 curing days, compressive strengths reached 44, 47, 45, and 49.7 MPa, and at 90 curing days, they increased to 47.5, 50, 55, and 61 MPa for milling conditions of 200 rpm for 5 min, 200 rpm for 15 min, 400 rpm for 5 min, and 400 rpm for 15 min, respectively. In addition, F1 formulations showed higher compressive strengths than the reference CEM II and CEM III pastes. These results highlight the efficacy of mechanosynthesis in valorizing construction waste, mitigating CO2 emissions, and creating environmentally friendly construction materials.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Comportement dynamique et cyclique des limons traités à la chaux et au liant hydraulique : approche expérimentale et modélisations

Auteur(s) : Author(s) : Autor(es) : Lucile Pigeot, Nathalie Dufour, Anthony Soive, Fabienne Dermenonville, Ahmed Loukili

Identifiant HAL : HAL identifier : HAL identificar : hal-03719805

Références bibliographiques : References : Referencias : Lucile Pigeot, Nathalie Dufour, Anthony Soive, Fabienne Dermenonville, Ahmed Loukili. Comportement dynamique et cyclique des limons traités à la chaux et au liant hydraulique : approche expérimentale et modélisations. 11èmes journées nationales de géotechnique et de géologie de l’ingénieur, Institut National des Sciences Appliquées de Lyon [INSA Lyon], CFMS, CFMR, CFGI, Jun 2022, Lyon, France. ⟨hal-03719805⟩

Début de résumé : Short abstract : Breve resumen : Comportement dynamique et cyclique des limons traités à la chaux et au liant hydraulique : approche expérimentale et modélisations

Résumé : Abstract : Resumen : Comportement dynamique et cyclique des limons traités à la chaux et au liant hydraulique : approche expérimentale et modélisations

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Compliance of a crack embedded in a transformed transversely isotropic material

Auteur(s) : Author(s) : Autor(es) : Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, Elena Vilchevskaya

Identifiant HAL : HAL identifier : HAL identificar : hal-04011534

Références bibliographiques : References : Referencias : Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, Elena Vilchevskaya. Compliance of a crack embedded in a transformed transversely isotropic material. Mathematics and Mechanics of Solids, 2023, 29 (12), pp.2538-2567. ⟨10.1177/10812865221150771⟩. ⟨hal-04011534⟩

DOI : 10.1177/10812865221150771

Début de résumé : Short abstract : Breve resumen : This paper is devoted to the analytical calculation of the contribution and opening displacement tensors of an arbitrarily oriented crack in a transformed transversely isotropic (TraTI) matrix. It generalizes a recent work considering elliptically orthotropic (EO) symmetry, as EO is a particular case of TraTI. The latter allows to explore a wider range of symmetries, including non-orthotropic symmetries. The approach is based on the linear transformation between boundary value problems with TraTI and transversely isotropic (TI) bodies. A detailed analysis shows that TraTI fourth-order tensors are described by a set of 11 parameters (5 material parameters and 6 angles defining the transformation). This is a significant enrichment beyond the set of EO tensors which depends on 7 parameters (4 material parameters and 3 angles). New analytical results are obtained for elliptical and circular cracks embedded, respectively, in TraTI, orthotropic TraTI and monoclinic TraTI matrices. It is shown that the most general case leading to analytical derivations of crack contribution and opening displacement tensors is that of a TraTI matrix with a specific restriction: the initial crack must be aligned along the isotropy plane of the TI matrix. To the best of our knowledge, this corresponds to the current largest space of matrix anisotropy allowing analytical derivation of the compliance of a single elliptical crack embedded in an infinite matrix as well as an extension of analytical 3D results showing a coupling between opening and shear modes. Numerical results are presented to illustrate potential applications of the method for the case of an arbitrarily oriented elliptical crack in an infinite uniform matrix of stiffness of arbitrary anisotropy. The best-fit problem investigated in previous papers is revisited and a new algorithm providing the closest stiffness tensor for which there exists an analytical solution to the crack opening displacement tensor is developed. Numerical applications to real TI materials are finally presented.

Résumé : Abstract : Resumen : This paper is devoted to the analytical calculation of the contribution and opening displacement tensors of an arbitrarily oriented crack in a transformed transversely isotropic (TraTI) matrix. It generalizes a recent work considering elliptically orthotropic (EO) symmetry, as EO is a particular case of TraTI. The latter allows to explore a wider range of symmetries, including non-orthotropic symmetries. The approach is based on the linear transformation between boundary value problems with TraTI and transversely isotropic (TI) bodies. A detailed analysis shows that TraTI fourth-order tensors are described by a set of 11 parameters (5 material parameters and 6 angles defining the transformation). This is a significant enrichment beyond the set of EO tensors which depends on 7 parameters (4 material parameters and 3 angles). New analytical results are obtained for elliptical and circular cracks embedded, respectively, in TraTI, orthotropic TraTI and monoclinic TraTI matrices. It is shown that the most general case leading to analytical derivations of crack contribution and opening displacement tensors is that of a TraTI matrix with a specific restriction: the initial crack must be aligned along the isotropy plane of the TI matrix. To the best of our knowledge, this corresponds to the current largest space of matrix anisotropy allowing analytical derivation of the compliance of a single elliptical crack embedded in an infinite matrix as well as an extension of analytical 3D results showing a coupling between opening and shear modes. Numerical results are presented to illustrate potential applications of the method for the case of an arbitrarily oriented elliptical crack in an infinite uniform matrix of stiffness of arbitrary anisotropy. The best-fit problem investigated in previous papers is revisited and a new algorithm providing the closest stiffness tensor for which there exists an analytical solution to the crack opening displacement tensor is developed. Numerical applications to real TI materials are finally presented.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Comparative study of the prediction of delayed strains using the next-generation Eurocode2 with measurements on structures

Auteur(s) : Author(s) : Autor(es) : Francis Barré, Ludovic Caba, Jean Michel Torrenti, Abudushalamu Aili

Identifiant HAL : HAL identifier : HAL identificar : hal-04678384

Références bibliographiques : References : Referencias : Francis Barré, Ludovic Caba, Jean Michel Torrenti, Abudushalamu Aili. Comparative study of the prediction of delayed strains using the next-generation Eurocode2 with measurements on structures. European Journal of Environmental and Civil Engineering, 2024, pp.1-14. ⟨10.1080/19648189.2024.2370848⟩. ⟨hal-04678384⟩

DOI : 10.1080/19648189.2024.2370848

Début de résumé : Short abstract : Breve resumen : In structures where prestressing plays a vital role, predicting stress losses is essential to demonstrate their robustness. After presenting the equations of the next-generation Eurocode 2 (EC2), the delayed deformations of the containment vessels of EDF nuclear power plants are predicted. In the first step, the parameters of the laws are recalibrated based on the measurements of the containments, considering a temperature higher than 20°C. The application to 17 containments allows for the definition of a safety coefficient to be applied to shrinkage and creep to ensure that the delayed deformations evaluated for the design will be conservative. In the second step, the parameters of the equations of creep and shrinkage are calibrated on laboratory results, and an analytical model using these parameters is applied to 5 containments. All the results show that it is possible to predict the behavior of prestressed structures provided that the parameters of the equations controlling the delayed deformations are calibrated either on measurements of these structures or laboratory tests. Considering the variability of concretes, safety coefficients are proposed to guarantee that the predicted deformations cover 95% of the deformations of concrete of a given strength.

Résumé : Abstract : Resumen : In structures where prestressing plays a vital role, predicting stress losses is essential to demonstrate their robustness. After presenting the equations of the next-generation Eurocode 2 (EC2), the delayed deformations of the containment vessels of EDF nuclear power plants are predicted. In the first step, the parameters of the laws are recalibrated based on the measurements of the containments, considering a temperature higher than 20°C. The application to 17 containments allows for the definition of a safety coefficient to be applied to shrinkage and creep to ensure that the delayed deformations evaluated for the design will be conservative. In the second step, the parameters of the equations of creep and shrinkage are calibrated on laboratory results, and an analytical model using these parameters is applied to 5 containments. All the results show that it is possible to predict the behavior of prestressed structures provided that the parameters of the equations controlling the delayed deformations are calibrated either on measurements of these structures or laboratory tests. Considering the variability of concretes, safety coefficients are proposed to guarantee that the predicted deformations cover 95% of the deformations of concrete of a given strength.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Comparative study between different recycling methods of glass fiber coming from end-of-life wind turbine blades

Auteur(s) : Author(s) : Autor(es) : Imen Chikha, Youcef Bouzidi, Baklouti Samir, Nacef Tazi, Rachida Idir

Identifiant HAL : HAL identifier : HAL identificar : hal-04791681

Références bibliographiques : References : Referencias : Imen Chikha, Youcef Bouzidi, Baklouti Samir, Nacef Tazi, Rachida Idir. Comparative study between different recycling methods of glass fiber coming from end-of-life wind turbine blades. 13th International Renewable Energy Congress (IREC 2022), Dec 2022, Hammamet, Tunisia. ⟨hal-04791681⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Chemical Mechanisms Involved in the Coupled Attack of Sulfate and Chloride Ions on Low-Carbon Cementitious Materials: An In-Depth Study

Auteur(s) : Author(s) : Autor(es) : François El Inaty, Mario Marchetti, Marc Quiertant, Othman Omikrine Metalssi

Identifiant HAL : HAL identifier : HAL identificar : hal-04326017

Références bibliographiques : References : Referencias : François El Inaty, Mario Marchetti, Marc Quiertant, Othman Omikrine Metalssi. Chemical Mechanisms Involved in the Coupled Attack of Sulfate and Chloride Ions on Low-Carbon Cementitious Materials: An In-Depth Study. Applied Sciences, 2023, 13 (21), pp.11729. ⟨10.3390/app132111729⟩. ⟨hal-04326017⟩

DOI : 10.3390/app132111729

Début de résumé : Short abstract : Breve resumen : This study aims to analyze the individual and combined chemical attacks of sulfate and chloride ions on cementitious materials and assess the efficiency of some selected additives (fly ash, blast furnace slag, and metakaolin) in countering this combined attack. This research is conducted in the context of construction in marine environments, where reinforced concrete structures are often subject to significant challenges due to early exposure to sulfate and chloride ions. This early exposure results in concrete expansion, cracking, and, ultimately, the corrosion of steel reinforcements. Nevertheless, the interaction between sulfate ions, chloride ions, and the cementitious matrix remains poorly understood. Previous research has drawn conflicting conclusions, with some suggesting that sulfate ions mitigate chloride attacks, while others have come to the opposite conclusion. During this study, experimental investigations were conducted by immersing powders obtained from crushed ordinary Portland cement (CEM I) paste specimens, as well as binary, ternary, and quaternary blends, in sulfate, chloride, and sulfate–chloride solutions over the course of 25 days at an early age. Results from different characterization techniques (thermogravimetric analysis, Fourier Transform Infrared spectroscopy, Raman spectroscopy, etc.) indicate that chloride ions delay the formation of ettringite, while the presence of sulfate ions accelerates the chloride attack by limiting the formation of Friedel’s salt. The Mercury Intrusion Porosimetry test confirmed these results by showing a pronounced increase in specimens’ porosity after exposure to solely sulfate after 25 days, compared to the ones exposed to both sulfate and chloride ions. Furthermore, the incorporation of multiple additives, particularly in ternary and quaternary blends, demonstrates the enhanced durability of the studied samples. This was confirmed by a Fourier Transform Infrared spectroscopy analysis, which indicated a delayed ettringite formation in these mixtures. This delay was further affirmed by the complete depletion of sulfate ions in the sulfate solutions upon contact with powders derived from the 100% CEM I paste.

Résumé : Abstract : Resumen : This study aims to analyze the individual and combined chemical attacks of sulfate and chloride ions on cementitious materials and assess the efficiency of some selected additives (fly ash, blast furnace slag, and metakaolin) in countering this combined attack. This research is conducted in the context of construction in marine environments, where reinforced concrete structures are often subject to significant challenges due to early exposure to sulfate and chloride ions. This early exposure results in concrete expansion, cracking, and, ultimately, the corrosion of steel reinforcements. Nevertheless, the interaction between sulfate ions, chloride ions, and the cementitious matrix remains poorly understood. Previous research has drawn conflicting conclusions, with some suggesting that sulfate ions mitigate chloride attacks, while others have come to the opposite conclusion. During this study, experimental investigations were conducted by immersing powders obtained from crushed ordinary Portland cement (CEM I) paste specimens, as well as binary, ternary, and quaternary blends, in sulfate, chloride, and sulfate–chloride solutions over the course of 25 days at an early age. Results from different characterization techniques (thermogravimetric analysis, Fourier Transform Infrared spectroscopy, Raman spectroscopy, etc.) indicate that chloride ions delay the formation of ettringite, while the presence of sulfate ions accelerates the chloride attack by limiting the formation of Friedel’s salt. The Mercury Intrusion Porosimetry test confirmed these results by showing a pronounced increase in specimens’ porosity after exposure to solely sulfate after 25 days, compared to the ones exposed to both sulfate and chloride ions. Furthermore, the incorporation of multiple additives, particularly in ternary and quaternary blends, demonstrates the enhanced durability of the studied samples. This was confirmed by a Fourier Transform Infrared spectroscopy analysis, which indicated a delayed ettringite formation in these mixtures. This delay was further affirmed by the complete depletion of sulfate ions in the sulfate solutions upon contact with powders derived from the 100% CEM I paste.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Carbonated recycled concrete aggregates in construction: potential and bottlenecks identified by RILEM TC 309-MCP

Auteur(s) : Author(s) : Autor(es) : Yury A Villagran-Zaccardi, Lucy Ellwood, Priyadharshini Perumal, Jean Michel Torrenti, Zengfeng Zhao, Ellina Bernard, Theodore Hanein, Tung Chai Ling, Wei Wang, Zhidong Zhang, Ruben Snellings

Identifiant HAL : HAL identifier : HAL identificar : hal-04843247

Références bibliographiques : References : Referencias : Yury A Villagran-Zaccardi, Lucy Ellwood, Priyadharshini Perumal, Jean Michel Torrenti, Zengfeng Zhao, et al.. Carbonated recycled concrete aggregates in construction: potential and bottlenecks identified by RILEM TC 309-MCP. Materials and structures, 2024, 58 (1), pp.20. ⟨10.1617/s11527-024-02489-6⟩. ⟨hal-04843247⟩

DOI : 10.1617/s11527-024-02489-6

Début de résumé : Short abstract : Breve resumen : This review by Working Group 1 of the RILEM TC 309-MCP discusses recent advances in the beneficial carbonation treatment of recycled concrete aggregates (RCA). The impact of carbonation on RCA properties as well as the microstructure and performance of concrete and other construction materials made thereof is critically reviewed. The increasing focus on environmentally friendly building practices has led to a greater interest in the CO2 uptake associated with carbonation processing. Furthermore, emphasis is placed on the importance of adopting tailored strategies to optimise the carbonation process based on the quality and type of RCA. Evidence in the literature highlights the beneficiation potential of carbonation processing in improving RCA properties and performance, which translates in variable degrees of enhancement of the performance of concrete or other applications made thereof. The review concludes that, to date, significant techno-economic challenges remain to be addressed to improve the competitiveness of the technology, notably in terms of upscaling and refining life cycle assessment data.

Résumé : Abstract : Resumen : This review by Working Group 1 of the RILEM TC 309-MCP discusses recent advances in the beneficial carbonation treatment of recycled concrete aggregates (RCA). The impact of carbonation on RCA properties as well as the microstructure and performance of concrete and other construction materials made thereof is critically reviewed. The increasing focus on environmentally friendly building practices has led to a greater interest in the CO2 uptake associated with carbonation processing. Furthermore, emphasis is placed on the importance of adopting tailored strategies to optimise the carbonation process based on the quality and type of RCA. Evidence in the literature highlights the beneficiation potential of carbonation processing in improving RCA properties and performance, which translates in variable degrees of enhancement of the performance of concrete or other applications made thereof. The review concludes that, to date, significant techno-economic challenges remain to be addressed to improve the competitiveness of the technology, notably in terms of upscaling and refining life cycle assessment data.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Benefits of Chemometric and Raman Spectroscopy Applied to the Kinetics of Setting and Early Age Hydration of Cement Paste

Auteur(s) : Author(s) : Autor(es) : Mario Marchetti, Jean-Michel Mechling, Sarah Janvier-Badosa, Marc Offroy

Identifiant HAL : HAL identifier : HAL identificar : hal-04018380

Références bibliographiques : References : Referencias : Mario Marchetti, Jean-Michel Mechling, Sarah Janvier-Badosa, Marc Offroy. Benefits of Chemometric and Raman Spectroscopy Applied to the Kinetics of Setting and Early Age Hydration of Cement Paste. Applied Spectroscopy, 2022, 77 (1), 37-52, photos, graph., bibliogr. ⟨10.1177/00037028221135065⟩. ⟨hal-04018380⟩

DOI : 10.1177/00037028221135065

Début de résumé : Short abstract : Breve resumen : The addition of water is used to past by internal post-curing of hardening cement. Hydration and curing of cementitious are widely identified by non-destructive 1H nuclear magnetic resonance (NMR) measurements of transverse relaxation time and self-diffusion. However, those non-destructive analytical methodologies do not give a truly chemical characterization of thecement matrix during the hydration and curing process. Indeed, the NMR studies only the water dynamics of hydrating cement with internal post-curing. Recent research indicated chemometrics coupled with Raman spectroscopy allows for a better understanding of chemical processes. Recent advances in computing gave industries and research centers the opportunity togenerate cost effective data. In this work, an original method is presented, which uses both a data analysis and a non-invasive, non-destructive Raman monitoring of the hydration reaction of a Portland cement. Data was then analyzed by means of chemometrics methods (principal components analysis (PCA), independent components analysis (ICA), and multivariate curveresolution-alternated least-squares (MCR-ALS) with SIMPLe-to-use Interactive Self-modelling Mixture Analysi (SIMPLISMA) and Orthogonal Projection Approach (OP initialization). Results were compared to the ones obtained with thermogravimetric analysis of this cement paste. Besides the consistency of results from both analytical measurements, chemometrics coupled toRaman spectroscopy accurately revealed the details of the setting without any samples collection. The acquisition frequency allowed a proper identification of the occurrence of each of the various phases involved in the hydration and setting process.

Résumé : Abstract : Resumen : The addition of water is used to past by internal post-curing of hardening cement. Hydration and curing of cementitious are widely identified by non-destructive 1H nuclear magnetic resonance (NMR) measurements of transverse relaxation time and self-diffusion. However, those non-destructive analytical methodologies do not give a truly chemical characterization of thecement matrix during the hydration and curing process. Indeed, the NMR studies only the water dynamics of hydrating cement with internal post-curing. Recent research indicated chemometrics coupled with Raman spectroscopy allows for a better understanding of chemical processes. Recent advances in computing gave industries and research centers the opportunity togenerate cost effective data. In this work, an original method is presented, which uses both a data analysis and a non-invasive, non-destructive Raman monitoring of the hydration reaction of a Portland cement. Data was then analyzed by means of chemometrics methods (principal components analysis (PCA), independent components analysis (ICA), and multivariate curveresolution-alternated least-squares (MCR-ALS) with SIMPLe-to-use Interactive Self-modelling Mixture Analysi (SIMPLISMA) and Orthogonal Projection Approach (OP initialization). Results were compared to the ones obtained with thermogravimetric analysis of this cement paste. Besides the consistency of results from both analytical measurements, chemometrics coupled toRaman spectroscopy accurately revealed the details of the setting without any samples collection. The acquisition frequency allowed a proper identification of the occurrence of each of the various phases involved in the hydration and setting process.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Assessment of the durability of various cementitious materials subjected to low levels of H2S in wastewater networks

Auteur(s) : Author(s) : Autor(es) : Janette Ayoub, Marielle Guéguen-Minerbe, Tony Pons, Marcos Oliveira, Sabrina Guérin-Rechdaoui, Mario Marchetti

Identifiant HAL : HAL identifier : HAL identificar : hal-04610470

Références bibliographiques : References : Referencias : Janette Ayoub, Marielle Guéguen-Minerbe, Tony Pons, Marcos Oliveira, Sabrina Guérin-Rechdaoui, et al.. Assessment of the durability of various cementitious materials subjected to low levels of H2S in wastewater networks. Materials and structures, 2024, 57, ⟨10.1617/s11527-024-02346-6⟩. ⟨hal-04610470⟩

DOI : 10.1617/s11527-024-02346-6

Début de résumé : Short abstract : Breve resumen : Wastewater networks are intrinsically attacked by the production of H2S, a highly reactive gas known for its extremely aggressive nature. This study employs a range of techniques, such as XRD, SEM–EDS, TGA, and Raman spectrometry, to investigate the interaction between low concentrations of H2S averaging 1.3 ppm and various types of Portland cementitious materials (CEM I, CEM II, CEM III, and CEM V). The objective is to discern the chemical alterations contributing to structural deterioration and to provide a mineralogical characterization of the deterioration layers present on these binders. Through a comprehensive examination of the durability of these materials exposed to low concentrations of H2S in a Paris Region sewage system over nearly four years, the findings extend beyond surface-level observations. Despite the absence of visible signs of deterioration, high-precision analytical techniques reveal significant mineralogical transformations within the cementitious matrix. Expansive products such as gypsum, ettringite, and elemental sulfur are identified in mortar samples, underscoring the critical role of precise analysis in comprehending the deterioration process.

Résumé : Abstract : Resumen : Wastewater networks are intrinsically attacked by the production of H2S, a highly reactive gas known for its extremely aggressive nature. This study employs a range of techniques, such as XRD, SEM–EDS, TGA, and Raman spectrometry, to investigate the interaction between low concentrations of H2S averaging 1.3 ppm and various types of Portland cementitious materials (CEM I, CEM II, CEM III, and CEM V). The objective is to discern the chemical alterations contributing to structural deterioration and to provide a mineralogical characterization of the deterioration layers present on these binders. Through a comprehensive examination of the durability of these materials exposed to low concentrations of H2S in a Paris Region sewage system over nearly four years, the findings extend beyond surface-level observations. Despite the absence of visible signs of deterioration, high-precision analytical techniques reveal significant mineralogical transformations within the cementitious matrix. Expansive products such as gypsum, ettringite, and elemental sulfur are identified in mortar samples, underscoring the critical role of precise analysis in comprehending the deterioration process.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Assessing the economic, environmental, social, and circularity impacts of recycled aggregates in road construction with the RE-MED Application

Auteur(s) : Author(s) : Autor(es) : Antoinette Abou Jaoude, Rachida Idir, Oumaya Yazoghli Marzouk

Identifiant HAL : HAL identifier : HAL identificar : hal-04791305

Références bibliographiques : References : Referencias : Antoinette Abou Jaoude, Rachida Idir, Oumaya Yazoghli Marzouk. Assessing the economic, environmental, social, and circularity impacts of recycled aggregates in road construction with the RE-MED Application. SUM 2024, 7th Symposium on Circular Economy and Urban Mining, May 2024, Capri, Italy. ⟨hal-04791305⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Analysis of Concrete Transient Thermal Deformation in the Context of Structures Submitted to Various Levels of Temperature and Mechanical Loading

Auteur(s) : Author(s) : Autor(es) : Robin Cartier, Hugo Cagnon, Thierry Vidal, Jean-Michel Torrenti, Alain Sellier, Jérôme Verdier

Identifiant HAL : HAL identifier : HAL identificar : hal-04742095

Références bibliographiques : References : Referencias : Robin Cartier, Hugo Cagnon, Thierry Vidal, Jean-Michel Torrenti, Alain Sellier, et al.. Analysis of Concrete Transient Thermal Deformation in the Context of Structures Submitted to Various Levels of Temperature and Mechanical Loading. International RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures. SynerCrete 2023, Jun 2023, Milos, Greece. pp.413-424, ⟨10.1007/978-3-031-33211-1_37⟩. ⟨hal-04742095⟩

DOI : 10.1007/978-3-031-33211-1_37

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

Activated waste glass – performance and carbon footprint

Auteur(s) : Author(s) : Autor(es) : Martin Cyr, Rachida Idir, Louise Lemesre

Identifiant HAL : HAL identifier : HAL identificar : hal-04791277

Références bibliographiques : References : Referencias : Martin Cyr, Rachida Idir, Louise Lemesre. Activated waste glass – performance and carbon footprint. 10th International Conference on Engineering for Waste and Biomass Valorization, Aug 2024, Sendai, Japan. ⟨hal-04791277⟩

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

A detailed analysis of body waves simulated in homogenized media

Auteur(s) : Author(s) : Autor(es) : Paul Cupillard, Wim A. Mulder, Pierre Anquez, Antoine Mazuyer, Mustapha Zakari, Jean-François Barthélémy

Identifiant HAL : HAL identifier : HAL identificar : hal-04684860

Références bibliographiques : References : Referencias : Paul Cupillard, Wim A. Mulder, Pierre Anquez, Antoine Mazuyer, Mustapha Zakari, et al.. A detailed analysis of body waves simulated in homogenized media. SSA Annual Meeting, Seismological Society of America, Apr 2024, Anchorage (AK), United States. ⟨hal-04684860⟩

Début de résumé : Short abstract : Breve resumen : Non-periodic homogenization has proved to be an accurate asymptotic method for computing long-wavelength equivalent media for the seismic wave equation, turning small-scale heterogeneities and geometric complexity into smooth elastic properties. Using homogenized media allows i) decreasing the computation cost of wave propagation simulation and ii) studying the apparent, small-scale-induced anisotropy. After illustrating these two aspects briefly, I propose to analyze in great detail the accuracy of body waves simulated in homogenized 3D models of the subsurface. First, the behaviour of head-, reflected and refracted waves with respect to source-receiver offset, maximum frequency and velocity contrast across a planar interface, is investigated. Then, I consider the SEG-EAGE overthrust model to exemplify how the accuracy of simulated body waves anti-correlates with the distance to seismic source and the amount of apparent anisotropy. In high apparent anisotropy regions, we show that the first-order correction provided by the homogenization theory significantly improves the computed wavefield. The overall results of this analysis better frame the use of homogenized media in seismic wave simulation.

Résumé : Abstract : Resumen : Non-periodic homogenization has proved to be an accurate asymptotic method for computing long-wavelength equivalent media for the seismic wave equation, turning small-scale heterogeneities and geometric complexity into smooth elastic properties. Using homogenized media allows i) decreasing the computation cost of wave propagation simulation and ii) studying the apparent, small-scale-induced anisotropy. After illustrating these two aspects briefly, I propose to analyze in great detail the accuracy of body waves simulated in homogenized 3D models of the subsurface. First, the behaviour of head-, reflected and refracted waves with respect to source-receiver offset, maximum frequency and velocity contrast across a planar interface, is investigated. Then, I consider the SEG-EAGE overthrust model to exemplify how the accuracy of simulated body waves anti-correlates with the distance to seismic source and the amount of apparent anisotropy. In high apparent anisotropy regions, we show that the first-order correction provided by the homogenization theory significantly improves the computed wavefield. The overall results of this analysis better frame the use of homogenized media in seismic wave simulation.

Type de publication : Publication type : Tipo de publicación : Communication dans un congrès

A Critical Review of Existing Test-Methods for External Sulfate Attack

Auteur(s) : Author(s) : Autor(es) : Mike Jabbour, Othman Omikrine Metalssi, Marc Quiertant, Véronique Baroghel Bouny

Identifiant HAL : HAL identifier : HAL identificar : hal-03856011

Références bibliographiques : References : Referencias : Mike Jabbour, Othman Omikrine Metalssi, Marc Quiertant, Véronique Baroghel Bouny. A Critical Review of Existing Test-Methods for External Sulfate Attack. Materials, 2022, 15 (21), 33 p., graph., bibliogr. ⟨10.3390/ma15217554⟩. ⟨hal-03856011⟩

DOI : 10.3390/ma15217554

Début de résumé : Short abstract : Breve resumen : External sulfate attack (ESA) of cementitious materials has been studied worldwide for a very long time. This physical/chemical interaction between sulfate ions and the cement hardened el-ements affects the long-term durability of concrete structures: cracking, spalling or strength loss of concrete structures. To study these damaging phenomena, some standardized and non-standardized accelerated aging tests are used to evaluate the performance of cements in sul-fate-rich environments. However, these existing methods do not adequately predict field per-formance and some shortcomings or deficiencies still exist: change of degradation mechanisms when using high concentrations of sulfate, variable boundary conditions and small specimens compared to the real concrete structures. In this work, a critical review of some existing test methods and foreign national standard methods for ESA are presented, analyzed, and discussed. This results in some proposed recommendations for improving these methods to meet the needs of structure managers.

Résumé : Abstract : Resumen : External sulfate attack (ESA) of cementitious materials has been studied worldwide for a very long time. This physical/chemical interaction between sulfate ions and the cement hardened el-ements affects the long-term durability of concrete structures: cracking, spalling or strength loss of concrete structures. To study these damaging phenomena, some standardized and non-standardized accelerated aging tests are used to evaluate the performance of cements in sul-fate-rich environments. However, these existing methods do not adequately predict field per-formance and some shortcomings or deficiencies still exist: change of degradation mechanisms when using high concentrations of sulfate, variable boundary conditions and small specimens compared to the real concrete structures. In this work, a critical review of some existing test methods and foreign national standard methods for ESA are presented, analyzed, and discussed. This results in some proposed recommendations for improving these methods to meet the needs of structure managers.

Type de publication : Publication type : Tipo de publicación : Article dans une revue

Somme d'identifiants structure

Air emissions contribution to complete environmental assessment of multi-recycled road materials incorporating reclaimed bituminous pavement for a better resource management

Auteur(s) : Author(s) : Autor(es) : A. Pévère, V. Mouillet, L. Boulangé, Vincent Gaudefroy

Références bibliographiques : References : Referencias : A. Pévère, V. Mouillet, L. Boulangé, Vincent Gaudefroy. Air emissions contribution to complete environmental assessment of multi-recycled road materials incorporating reclaimed bituminous pavement for a better resource management. Resources, Conservation and Recycling, 2025, 212, pp.108003. ⟨10.1016/j.resconrec.2024.108003⟩. ⟨hal-04816546⟩

DOI : 10.1016/j.resconrec.2024.108003

Carbonated recycled concrete aggregates in construction: potential and bottlenecks identified by RILEM TC 309-MCP

DOI : 10.1617/s11527-024-02489-6

Recycling of construction site sludge (Bentonitic) and concrete slurry in cementitious matrix

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Gwenn Le Saout

Mechanical Behavior Analysis of Lightweight Concrete Reinforced by Metalized Plastic Waste Fibers

Auteur(s) : Author(s) : Autor(es) : Maher Chakhari, Nawel Salem, Rachida Idir, Jamel Neji

DOI : 10.4028/p-NGvb4Z

Evaluation of long-term aging of low-carbon cementitious materials under severe H2S impact in sewerage systems

Auteur(s) : Author(s) : Autor(es) : Janette Ayoub, Marielle Guéguen Minerbe, Tony Pons, Marcos Oliveira, Sabrina Guérin, Jeon Woong Kang, Mario Marchetti

DOI : 10.1016/j.conbuildmat.2024.138125

Comparative study of the prediction of delayed strains using the next-generation Eurocode2 with measurements on structures

Auteur(s) : Author(s) : Autor(es) : Francis Barré, Ludovic Caba, Jean Michel Torrenti, Abudushalamu Aili

DOI : 10.1080/19648189.2024.2370848

Sustainable cementitious materials: exploring alkali-activated binders

Auteur(s) : Author(s) : Autor(es) : Nourredine Goufi, Nouria Kaid, Djamel El Ddine Kerdal, Rachida Idir

DOI : 10.1680/jcoma.22.00037

Raman identification of CaCO3 polymorphs in concrete prepared with carbonated recycled concrete aggregates

DOI : 10.1617/s11527-024-02296-z

Early‐age cracking due to restraint: Laboratory and field investigations on the predictive capacity of the simplified method in Annex D of the future EC2

Auteur(s) : Author(s) : Autor(es) : Antonia Menga, Jean‐michel Torrenti, Terje Kanstad, Anja Birgitta Estensen Klausen

DOI : 10.1002/suco.202400173

Assessment of the durability of various cementitious materials subjected to low levels of H2S in wastewater networks

Auteur(s) : Author(s) : Autor(es) : Janette Ayoub, Marielle Guéguen-Minerbe, Tony Pons, Marcos Oliveira, Sabrina Guérin-Rechdaoui, Mario Marchetti

DOI : 10.1617/s11527-024-02346-6

Strength Development and Environmental Impact of Waste-Glass-Based Cements Activated with Portland Cement, NaOH, Na-Silicate or Na-Carbonates at Ambient Temperature

Auteur(s) : Author(s) : Autor(es) : Louise Lemesre, Rachida Idir, Martin Cyr

DOI : 10.3390/ma17205097

A detailed analysis of body waves simulated in homogenized media

Auteur(s) : Author(s) : Autor(es) : Paul Cupillard, Wim A. Mulder, Pierre Anquez, Antoine Mazuyer, Mustapha Zakari, Jean-François Barthélémy

Practical insights on standardised models for estimation of crack width due to imposed strains in edge-restrained reinforced concrete elements

Auteur(s) : Author(s) : Autor(es) : Agnieszka Jędrzejewska, Mariusz Zych, Jean Michel Torrenti, Fragkoulis Kanavaris, Miguel Azenha, Fangjie Chen, Shintaro Ito

DOI : 10.1016/j.engstruct.2024.117757

Activated waste glass – performance and carbon footprint

Auteur(s) : Author(s) : Autor(es) : Martin Cyr, Rachida Idir, Louise Lemesre

Assessing the economic, environmental, social, and circularity impacts of recycled aggregates in road construction with the RE-MED Application

Auteur(s) : Author(s) : Autor(es) : Antoinette Abou Jaoude, Rachida Idir, Oumaya Yazoghli Marzouk

Efficiency of the Impressed Current Cathodic Protection (ICCP) in reinforced concretes: Experimental and numerical investigation

Auteur(s) : Author(s) : Autor(es) : Akoêtê Bernus Kouevidjin, Ayodele Adessina, Jean-François Barthélémy, Juan Carpio-Perez, Amor Ben Fraj, Alexandre Pavoine

DOI : 10.1016/j.electacta.2024.143923

High performance illitic clay-based geopolymer: Influence of thermal/mechanical activation on strength development

Auteur(s) : Author(s) : Autor(es) : Baptiste Luzu, Myriam Duc, Assia Djerbi, Laurent Gautron

DOI : 10.1016/j.clay.2024.107445

Effect of calcium stearate on cellulose acetate-based mortars

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Othman Omikrine Metalssi, Teddy Fen-Chong

DOI : 10.1016/j.jclepro.2024.142588

Development of Sustainable Construction Materials from Inert Waste Mixtures Using the Mechanosynthesis Process

Auteur(s) : Author(s) : Autor(es) : Rabah Hamzaoui, Othmane Bouchenafa, Rachida Idir, Assia Djerbi, Teddy Fen-Chong, Céline Florence, François Boutin

DOI : 10.3390/ma17174301

Raman Spectroscopy

Auteur(s) : Author(s) : Autor(es) : Mario Marchetti, Cécile Diliberto, Jean-Michel Mechling, Jeon Woong, P. Bourson, M. Offroy, Gwenaël Gouadec

Références bibliographiques : References : Referencias : Mario Marchetti, Cécile Diliberto, Jean-Michel Mechling, Jeon Woong, P. Bourson, et al.. Raman Spectroscopy. Akira Otsuki; Seiko Jose; Manasa Mohan; Sabu Thomas. Non-Destructive Material Characterization Methods, Elsevier Science, 2023, 978-0-323-91150-4. ⟨hal-03958774⟩

Improvement of the compressive strength of recycled aggregate concretes and relative effects on durability properties

Auteur(s) : Author(s) : Autor(es) : Ayodele Adessina, Amor Ben Fraj, Jean-François Barthélémy

DOI : 10.1016/j.conbuildmat.2023.131447

Mechanical properties, carbon footprint and cost of ultra-high performance concrete containing ground granulated blast furnace slag

Auteur(s) : Author(s) : Autor(es) : Soufien Moula, Amor Ben Fraj, Thomas Wattez, Marwen Bouasker, Nizar Bel Hadj Ali

DOI : 10.1016/j.jobe.2023.107796

Standardised models for cracking due to restraint of imposed strainsthe state of the art

DOI : 10.1002/suco.202200301

Chemical Mechanisms Involved in the Coupled Attack of Sulfate and Chloride Ions on Low-Carbon Cementitious Materials: An In-Depth Study

Auteur(s) : Author(s) : Autor(es) : François El Inaty, Mario Marchetti, Marc Quiertant, Othman Omikrine Metalssi

DOI : 10.3390/app132111729

The very early-age behaviour of Ultra-High Performance Concrete containing ground granulated blast furnace slag

Auteur(s) : Author(s) : Autor(es) : Soufien Moula, Amor Ben Fraj, Thomas Wattez, Marwen Bouasker, Nizar Bel Hadj Ali

DOI : 10.1016/j.conbuildmat.2023.132630

Reuse of river sediments in pervious concrete: Towards an adaptation of concrete to the circular economy and climate change challenges

Auteur(s) : Author(s) : Autor(es) : Hamza Beddaa, Junior Tchiotsop, Amor Ben Fraj, Ciryle Somé

DOI : 10.1016/j.conbuildmat.2023.130443

Analysis of Concrete Transient Thermal Deformation in the Context of Structures Submitted to Various Levels of Temperature and Mechanical Loading

Auteur(s) : Author(s) : Autor(es) : Robin Cartier, Hugo Cagnon, Thierry Vidal, Jean-Michel Torrenti, Alain Sellier, Jérôme Verdier

DOI : 10.1007/978-3-031-33211-1_37

Stockage de CO2 dans les GBR -Recommandations du PN FastCarb

Auteur(s) : Author(s) : Autor(es) : Jean Michel Torrenti, Xavier Guillot

DOI : 10.26168/ajce.41.1.51

Numerical Estimation of Resistivity Contribution Tensor of a Concave Pore Embedded in a Transversely Isotropic Matrix

Auteur(s) : Author(s) : Autor(es) : Kou Du, Long Cheng, Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, Ayodele Adessina

Références bibliographiques : References : Referencias : Kou Du, Long Cheng, Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, et al.. Numerical Estimation of Resistivity Contribution Tensor of a Concave Pore Embedded in a Transversely Isotropic Matrix. Advances in Linear and Nonlinear Continuum and Structural Mechanics, 198, Springer Nature Switzerland, pp.87-114, 2023, Advanced Structured Materials, ⟨10.1007/978-3-031-43210-1_5⟩. ⟨hal-04320395⟩

DOI : 10.1007/978-3-031-43210-1_5

Compliance of a crack embedded in a transformed transversely isotropic material

Auteur(s) : Author(s) : Autor(es) : Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, Elena Vilchevskaya

DOI : 10.1177/10812865221150771

On the long-term delayed strain of concrete structures

Auteur(s) : Author(s) : Autor(es) : Abudushalamu Aili, Jean-Michel Torrenti, Jean-Philippe Sellin, Jean-François Barthélémy, Matthieu Vandamme

DOI : 10.1016/j.cemconres.2022.107086

Impact of leaching and chlorides on sulfate attack for cement paste

Auteur(s) : Author(s) : Autor(es) : Bo Ran, Othman Omikrine Metalssi, Teddy Fen-Chong, Patrick Dangla, Kefei Li

DOI : 10.1016/j.conbuildmat.2023.130881

Understanding the degradation mechanisms of cement-based systems in combined chloride-sulfate attack

DOI : 10.1016/j.cemconres.2022.107065

Proposition d'un modèle d'homogénéisation des propriétés mécaniques d'un limon traité à la chaux et au liant hydraulique

Auteur(s) : Author(s) : Autor(es) : Lucile Pigeot, Anthony Soive, Nathalie Dufour, Jean-François Barthélémy, Fabienne Dermenonville, Ahmed Loukili

DOI : 10.26168/10.26168/ajce.41.1.21

Pore crystallization and expansion of cement pastes in sulfate solutions with and without chlorides

Auteur(s) : Author(s) : Autor(es) : Bo Ran, Othman Omikrine Metalssi, Teddy Fen-Chong, Patrick Dangla, Kefei Li

DOI : 10.1016/j.cemconres.2023.107099

Influence of the Ambient Relative Humidity on the Very-Long-Term DEF

Auteur(s) : Author(s) : Autor(es) : Thierry Houndonougbo, Boumediene Nedjar, Loic Divet, Jean-Michel Torrenti

DOI : 10.3390/constrmater3040026

Effective Thermal Conductivity of Transversely Isotropic Materials with Concave Pores

Auteur(s) : Author(s) : Autor(es) : Kou Du, Long Cheng, Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, Ayodele Adessina

Références bibliographiques : References : Referencias : Kou Du, Long Cheng, Jean-François Barthélémy, Igor Sevostianov, Albert Giraud, et al.. Effective Thermal Conductivity of Transversely Isotropic Materials with Concave Pores. Advances in Linear and Nonlinear Continuum and Structural Mechanics, 198, Springer Nature Switzerland, pp.115-134, 2023, Advanced Structured Materials, ⟨10.1007/978-3-031-43210-1_6⟩. ⟨hal-04320403⟩

DOI : 10.1007/978-3-031-43210-1_6

Effect of an Early-Age Exposure on the Degradation Mechanisms of Cement Paste under External Sulfate Attack

Auteur(s) : Author(s) : Autor(es) : Othman Omikrine Metalssi, Rim Ragoug, Fabien Barberon, Jean-Baptiste D’espinose De Lacaillerie, Nicolas Roussel, Loïc Divet, Jean-Michel Torrenti

DOI : 10.3390/ma16176013

Impact of Industrial Application of Fast Carbonation of Recycled Concrete Aggregates

Auteur(s) : Author(s) : Autor(es) : Laurent Izoret, Thomas Pernin, Jean-Marc Potier, Jean-Michel Torrenti

DOI : 10.3390/app13020849

Formulation of an ordinary geopolymer concrete within an ecodesign approach

Auteur(s) : Author(s) : Autor(es) : Daniella Gabra Gilada, Rachida Idir, Assia Djerbi, Teddy Fen-Chong, André Orcesi

Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging

DOI : 10.1021/acs.energyfuels.2c04159

Effet du stéarate de calcium sur la microstructure de mortier à base d'acétate de cellulose

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Othman Omikrine-Metalssi, Teddy Fen-Chong

Feasibility of using polyurethane waste in the form of granules for civil construction

Auteur(s) : Author(s) : Autor(es) : Thouraya Salem, Danah Shehadeh, Othmane Bouchenafa, Céline Florence

DOI : 10.1007/s10163-023-01807-4

Effect of human hair fibers on microstructural and mechanical properties of mortars

Auteur(s) : Author(s) : Autor(es) : Hussein Nasreddine, Thouraya Salem, Othman Omikrine-Metalssi, Teddy Fen-Chong

Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging

Références bibliographiques : References : Referencias : Fayçal Lahjiri, Virginie Mouillet, Anne Dony, Layella Ziyani, Sabine Gazeau, et al.. Relationships between Chemical Composition, Asphaltene Nanostructures, and Thermochemical Properties of Bitumen before and after Accelerated Oxidative Aging. Energy & Fuels, 2023, 37 (12), pp.8444 - 8455. ⟨10.1021/acs.energyfuels.2c04159⟩. ⟨hal-04807943⟩

DOI : 10.1021/acs.energyfuels.2c04159

Life cycle assessment of the first road constrcuted in Tunisia including recycled aggregates: Focus on recycled aggregates from deconstructed concrete

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Marianne Villey, Zakaria Jaouadi, Oumaya Yazoghli Marzouk

Towards the chemical activation of the natural pozzolan of beni-saf for the production of a new geopolymer cement

Auteur(s) : Author(s) : Autor(es) : Nourredine Goufi, Nouria Kaid, Djamel Eddine Kerdal, Rachida Idir

Effect of Thermal Ageing on the Mechanical Properties and Cracking Behaviour of Asphalt Concrete

Auteur(s) : Author(s) : Autor(es) : B. Kouevidjin, J.-F. Barthélémy, C. Somé, H. Ben Dhia, A. Feeser

Références bibliographiques : References : Referencias : B. Kouevidjin, J.-F. Barthélémy, C. Somé, H. Ben Dhia, A. Feeser. Effect of Thermal Ageing on the Mechanical Properties and Cracking Behaviour of Asphalt Concrete. Proceedings of the RILEM International Symposium on Bituminous Materials, 27, Springer International Publishing, pp.631-637, 2022, RILEM Bookseries, ⟨10.1007/978-3-030-46455-4_80⟩. ⟨hal-03711271⟩

DOI : 10.1007/978-3-030-46455-4_80

L’utilisation du verre dans les bétons, une alternative pour un recyclage massif

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Martin Cyr, Arezki Tagnit-Hamou

The FastCarb project: Taking advantage of the accelerated carbonation of recycled concrete aggregates

DOI : 10.1016/j.cscm.2022.e01349

Modelling of viscoelastic properties and crack growth in bituminous mixtures: Application to the simulation of crack growth in semi-circular samples subjected to oxidative ageing

Auteur(s) : Author(s) : Autor(es) : Akoêtê Bernus Kouevidjin, Jean-François Barthélémy, Saannibe Ciryle Somé, Hachmi Ben Dhia, Virginie Mouillet

DOI : 10.1016/j.engfracmech.2022.108580

Expertise du quai Hermann du Pasquier du Port du Havre

Recycling glass fibre coming from end-of-life wind turbine blades for potential application in civil engineering

Auteur(s) : Author(s) : Autor(es) : Chikha Imen, Youcef Bouzidi, Samir Baklouti, Nacef Tazi, Rachida Idir

Benefits of Chemometric and Raman Spectroscopy Applied to the Kinetics of Setting and Early Age Hydration of Cement Paste

Auteur(s) : Author(s) : Autor(es) : Mario Marchetti, Jean-Michel Mechling, Sarah Janvier-Badosa, Marc Offroy

DOI : 10.1177/00037028221135065

Comportement dynamique et cyclique des limons traités à la chaux et au liant hydraulique : approche expérimentale et modélisations

Auteur(s) : Author(s) : Autor(es) : Lucile Pigeot, Nathalie Dufour, Anthony Soive, Fabienne Dermenonville, Ahmed Loukili

Spalling rate of concretes subject to combined leaching and external sulfate attack

Auteur(s) : Author(s) : Autor(es) : Bo Ran, Kefei Li, Teddy Fen-Chong, Othman Omikrine Metalssi, Patrick Dangla

Valorization of Cellulose Acetate Fibers in Mortars

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Sandrine Marceau, Othman Omikrine Metalssi, Teddy Fen-Chong

Projet National FastCarb – Propriétés de bétons contenant des granulats de béton recyclés carbonatés

DOI : 10.26168/ajce.40.3.8

L'utilisation du verre de recyclage dans les matériaux cimentaires et alcali-activés

Auteur(s) : Author(s) : Autor(es) : Rachida Idir, Louise Lemesre, Bathyle Hery, Thomas Poinot, André Carles-Gibergues, Arezki Tagnit-Hamou, Martin Cyr

Study of the effects of incorporating depolluted cellulose acetate in mortars, with and without superplasticizer, in view of recycling cigarette butt waste

Auteur(s) : Author(s) : Autor(es) : Joe Tannous, Thouraya Salem, Othman Omikrine Metalssi, Sandrine Marceau, Teddy Fen-Chong

DOI : 10.1016/j.conbuildmat.2022.128492

Effect of thermo-oxidative ageing on the rheological properties of bituminous binders and mixes: Experimental study and multi-scale modeling

Auteur(s) : Author(s) : Autor(es) : Saannibe Ciryle Somé, Jean-François Barthélémy, Virginie Mouillet, Ferhat Hammoum, Gang Liu

DOI : 10.1016/j.conbuildmat.2022.128260

Laitier alcali-activé : du laboratoire aux applications industrielles

Valorisation de déchets de polyuréthane dans des mortiers

Auteur(s) : Author(s) : Autor(es) : Danah Shehadeh, Thouraya Salem, Othmane Bouchenafa, Céline Florence

DOI : 10.26168/ajce.40.1.22

Reuse of Untreated Fine Sediments as Filler: Is It More Beneficial than Incorporating Them as Sand?

Auteur(s) : Author(s) : Autor(es) : Hamza Beddaa, Amor Ben Fraj, Francis Lavergne, Jean-Michel Torrenti

DOI : 10.3390/buildings12020211

Effet du stéarate de calcium et d’additions sur l’ouvrabilité et la résistance mécanique de mortiers d’acétate de cellulose

Auteur(s) : Author(s) : Autor(es) : Thouraya Salem, Joe Tannous, Sandrine Marceau, Othman Omikrine Metalssi, Fen-Chong Teddy

DOI : 10.26168/ajce.40.1.25

Comparative study between different recycling methods of glass fiber coming from end-of-life wind turbine blades

Auteur(s) : Author(s) : Autor(es) : Imen Chikha, Youcef Bouzidi, Baklouti Samir, Nacef Tazi, Rachida Idir

A Critical Review of Existing Test-Methods for External Sulfate Attack

Auteur(s) : Author(s) : Autor(es) : Mike Jabbour, Othman Omikrine Metalssi, Marc Quiertant, Véronique Baroghel Bouny

DOI : 10.3390/ma15217554

Experimental investigation and micromechanical modeling of mechanical and durability properties of concrete based on shells from sediments

Auteur(s) : Author(s) : Autor(es) : Hamza Beddaa, Francis Lavergne, Amor Ben Fraj, Jean-François Barthélémy, Jean-Michel Torrenti

DOI : 10.1016/j.cemconcomp.2022.104684

Publications Estas

Francesco Benigno, Laurent Bourquin, Alain Hugon (éd.) , Violences en révolte. Une histoire culturelle européenne, XIV e -XVIII e siècle, Rennes, Presses universitaires de Rennes, 2019, 314 p., IBSN 978-2-7535-7745-9

Auteur(s) : Author(s) : Autor(es) : Diane Roussel

Références bibliographiques : References : Referencias : Diane Roussel. Francesco Benigno, Laurent Bourquin, Alain Hugon (éd.) , Violences en révolte. Une histoire culturelle européenne, XIV e -XVIII e siècle, Rennes, Presses universitaires de Rennes, 2019, 314 p., IBSN 978-2-7535-7745-9. Revue d'Histoire Moderne et Contemporaine, 2023, 70-1 (1), pp.218-220. ⟨10.3917/rhmc.701.0220⟩. ⟨hal-04409885⟩

DOI : 10.3917/rhmc.701.0220

Aux sources du bolsonarisme. Le regard porté par les officiers retraités d’extrême droite sur la Nouvelle République brésilienne, années 1990-2010

Auteur(s) : Author(s) : Autor(es) : Maud Chirio

Références bibliographiques : References : Referencias : Maud Chirio. Aux sources du bolsonarisme. Le regard porté par les officiers retraités d’extrême droite sur la Nouvelle République brésilienne, années 1990-2010. Histoire@Politique : revue du Centre d'histoire de Sciences Po, 2023, 50, ⟨10.4000/histoirepolitique.14471⟩. ⟨hal-04330815⟩

DOI : 10.4000/histoirepolitique.14471

Les Salviati à l’étranger : comment les marchands-banquiers italiens renforçaient leur pouvoir et leur richesse

Auteur(s) : Author(s) : Autor(es) : Matthieu Scherman

Références bibliographiques : References : Referencias : Matthieu Scherman. Les Salviati à l’étranger : comment les marchands-banquiers italiens renforçaient leur pouvoir et leur richesse. Médiévales, 2023, 83, pp.175-190. ⟨halshs-04189332⟩

Sur une louange inédite d’Odet de Foix, vicomte de Lautrec

Auteur(s) : Author(s) : Autor(es) : Pierre Savy

Références bibliographiques : References : Referencias : Pierre Savy. Sur une louange inédite d’Odet de Foix, vicomte de Lautrec. Annuaire-Bulletin de la Société de l'histoire de la France, 2023, Année 2018, pp.87-106. ⟨hal-04414333⟩

Presentation: Medieval Economic Rationalities

Auteur(s) : Author(s) : Autor(es) : Marcelo Cândido Da Silva, Pierre Savy

Références bibliographiques : References : Referencias : Marcelo Cândido Da Silva, Pierre Savy. Presentation: Medieval Economic Rationalities. Varia Historia , 2023, 80, ⟨10.1590/0104-87752023000200004⟩. ⟨hal-04415294⟩

DOI : 10.1590/0104-87752023000200004

Un magistère d’exception : Fabienne Bock à l’Université de Marne-la-Vallée (1992-2012)

Auteur(s) : Author(s) : Autor(es) : Georges Lomné

Références bibliographiques : References : Referencias : Georges Lomné. Un magistère d’exception : Fabienne Bock à l’Université de Marne-la-Vallée (1992-2012). Raison présente, 2023, 228, pp.13-18. ⟨hal-04417451⟩

S. Durali, G. Dietsch, Une histoire politique de l’EPS. Du XIXe siècle à nos jours, Louvain-la-Neuve, De Boeck Supérieur

Auteur(s) : Author(s) : Autor(es) : Yacine Tajri

Références bibliographiques : References : Referencias : Yacine Tajri. S. Durali, G. Dietsch, Une histoire politique de l’EPS. Du XIXe siècle à nos jours, Louvain-la-Neuve, De Boeck Supérieur. STAPS : Revue internationale des sciences du sport et de l'éducation physique, 2023. ⟨hal-04328626⟩

L’invisibilité progressive des jeunes filles au sein des espaces publics sportifs parisiens.

Auteur(s) : Author(s) : Autor(es) : Jeanne-Maud Jarthon, Jérémy Pierre

Références bibliographiques : References : Referencias : Jeanne-Maud Jarthon, Jérémy Pierre. L’invisibilité progressive des jeunes filles au sein des espaces publics sportifs parisiens.. Espaces et sociétés (Paris, France), A paraître. ⟨hal-04249052⟩

Du sport pour les personnes handicapées mentales (1962-1983) : des préoccupations américaines à la constitution de la Fédération française du sport adapté (FFSA)

Auteur(s) : Author(s) : Autor(es) : Yacine Tajri

Références bibliographiques : References : Referencias : Yacine Tajri. Du sport pour les personnes handicapées mentales (1962-1983) : des préoccupations américaines à la constitution de la Fédération française du sport adapté (FFSA). Sciences sociales et sport, In press. ⟨hal-04328274⟩

Retribuzioni e autorità politiche (secc. XV-XVIII). Un’introduzione

Auteur(s) : Author(s) : Autor(es) : Corine Maitte, Matthieu Scherman

Références bibliographiques : References : Referencias : Corine Maitte, Matthieu Scherman. Retribuzioni e autorità politiche (secc. XV-XVIII). Un’introduzione. Ricerche di storia economica e sociale = Journal of economic and social history, 2023, 1-2, pp.3-11. ⟨10.17426/R08C02⟩. ⟨halshs-04352401⟩

DOI : 10.17426/R08C02

Le commerce des aluns dans la documentation comptable : l’exemple du fonds Salviati

Auteur(s) : Author(s) : Autor(es) : Matthieu Scherman

Références bibliographiques : References : Referencias : Matthieu Scherman. Le commerce des aluns dans la documentation comptable : l’exemple du fonds Salviati. Mélanges de l’École française de Rome - Moyen Âge, 2023, 135-2, pp.505-512. ⟨10.4000/mefrm.12933⟩. ⟨halshs-04552229⟩

DOI : 10.4000/mefrm.12933

Les femmes de la famille impériale, jeunes et « nouvelles déesses » dans les provinces grecques de l’empire romain

Auteur(s) : Author(s) : Autor(es) : Gabrielle Frija

Références bibliographiques : References : Referencias : Gabrielle Frija. Les femmes de la famille impériale, jeunes et « nouvelles déesses » dans les provinces grecques de l’empire romain. Revue de l'histoire des religions, 2023, 240 (4), pp.631 - 655. ⟨10.4000/rhr.12864⟩. ⟨hal-04399143⟩

DOI : 10.4000/rhr.12864

« Faire du domicile » à la campagne : identités professionnelles des aides à domicile pour personnes âgées dans les mondes ruraux

Auteur(s) : Author(s) : Autor(es) : Laura Durand

Références bibliographiques : References : Referencias : Laura Durand. « Faire du domicile » à la campagne : identités professionnelles des aides à domicile pour personnes âgées dans les mondes ruraux. Carnets de géographes, 2023, 17, ⟨10.4000/cdg.9471⟩. ⟨hal-04383313⟩

DOI : 10.4000/cdg.9471

Lydie Bodiou et Frédéric Chauvaud (dir.), Les archives du féminicide

Auteur(s) : Author(s) : Autor(es) : Diane Roussel

Références bibliographiques : References : Referencias : Diane Roussel. Lydie Bodiou et Frédéric Chauvaud (dir.), Les archives du féminicide. Genre & histoire, 2023, 31, ⟨10.4000/genrehistoire.8160⟩. ⟨hal-04387666⟩

DOI : 10.4000/genrehistoire.8160

Imaginaire gothique et métier d'architecte

Auteur(s) : Author(s) : Autor(es) : Pauline Guillemet

Références bibliographiques : References : Referencias : Pauline Guillemet. Imaginaire gothique et métier d'architecte. Transversale. Histoire : architecture, paysage, urbain, 2023, Espaces politique de l'architecture : engagements, expériences, transmission (7), pp.9-23. ⟨hal-04575884⟩

La participation des personnes en situation de handicap à la pratique physique et sportive en milieu ordinaire : des expériences semées d’embûches

Auteur(s) : Author(s) : Autor(es) : Cécile Collinet, Jeanne-Maud Jarthon, Matthieu Delalandre, Arnaud Daviré, Benoit Segay

Références bibliographiques : References : Referencias : Cécile Collinet, Jeanne-Maud Jarthon, Matthieu Delalandre, Arnaud Daviré, Benoit Segay. La participation des personnes en situation de handicap à la pratique physique et sportive en milieu ordinaire : des expériences semées d’embûches. Empan, 2023, 129, pp.151-159. ⟨hal-04135228⟩

Barbusse, B. (2022). Du sexisme dans le sport . 2 e édition, Paris : Anamosa

Auteur(s) : Author(s) : Autor(es) : Marion Philippe

Références bibliographiques : References : Referencias : Marion Philippe. Barbusse, B. (2022). Du sexisme dans le sport . 2 e édition, Paris : Anamosa. STAPS : Revue internationale des sciences du sport et de l'éducation physique, A paraître, ⟨10.3917/sta.pr1.0063⟩. ⟨halshs-04328788⟩

DOI : 10.3917/sta.pr1.0063

Rattacher la Loire-Atlantique à la Bretagne lors de la réforme territoriale de 2015 ? Une approche par la géopolitique des médias

Auteur(s) : Author(s) : Autor(es) : Annaig Oiry, Yann Richard

Références bibliographiques : References : Referencias : Annaig Oiry, Yann Richard. Rattacher la Loire-Atlantique à la Bretagne lors de la réforme territoriale de 2015 ? Une approche par la géopolitique des médias. Annales de géographie, 2023, 752 (4), pp.5-32. ⟨10.3917/ag.752.0005⟩. ⟨hal-04419199⟩

DOI : 10.3917/ag.752.0005

Un “espejismo maravilloso”: El Caballero de El Dorado y Don Quijote de la Mancha

Auteur(s) : Author(s) : Autor(es) : Georges Lomné

Références bibliographiques : References : Referencias : Georges Lomné. Un “espejismo maravilloso”: El Caballero de El Dorado y Don Quijote de la Mancha. Revista Aleph, Publicación literaria y de pensamiento, Manizales (Colombia), 2023, LVII (207), pp.2-8. ⟨hal-04267424⟩

Penser l’espace du travail en féministe matérialiste

Auteur(s) : Author(s) : Autor(es) : Danièle Kergoat, Amandine Chapuis

Références bibliographiques : References : Referencias : Danièle Kergoat, Amandine Chapuis. Penser l’espace du travail en féministe matérialiste. Carnets de géographes, 2023, 17, ⟨10.4000/cdg.9771⟩. ⟨halshs-04413661⟩

DOI : 10.4000/cdg.9771

Revendiquer l’innovation dans le champ de la culture physique : étude de trois méthodes contemporaines

Auteur(s) : Author(s) : Autor(es) : Brice Favier-Ambrosini, Matthieu Delalandre, Matthieu Quidu

Références bibliographiques : References : Referencias : Brice Favier-Ambrosini, Matthieu Delalandre, Matthieu Quidu. Revendiquer l’innovation dans le champ de la culture physique : étude de trois méthodes contemporaines. Loisir et Société / Society and Leisure, 2023, 46 (1), pp.109-135. ⟨10.1080/07053436.2023.2184024⟩. ⟨hal-04135192⟩

DOI : 10.1080/07053436.2023.2184024

Essentielles et déclassées

Auteur(s) : Author(s) : Autor(es) : Joanne Le Bars

Références bibliographiques : References : Referencias : Joanne Le Bars. Essentielles et déclassées. Revue Projet, 2023, N° 392 (1), pp.45-48. ⟨10.3917/pro.392.0045⟩. ⟨hal-04351829⟩

DOI : 10.3917/pro.392.0045

Les discussions de Gui Foucois, archevêque de Narbonne, avec le rabbin Meïr ben Siméon

Auteur(s) : Author(s) : Autor(es) : Pierre Savy

Références bibliographiques : References : Referencias : Pierre Savy. Les discussions de Gui Foucois, archevêque de Narbonne, avec le rabbin Meïr ben Siméon. Cahiers de Fanjeaux, 2023, 57, pp.335-346 et 353-356. ⟨hal-04414215⟩

Démocratie antique : germe ou impasse ?

Auteur(s) : Author(s) : Autor(es) : Antoine Chabod, Paul Cournarie

Références bibliographiques : References : Referencias : Antoine Chabod, Paul Cournarie. Démocratie antique : germe ou impasse ?. Revue des études anciennes, 2023, 125 (2), pp.459-477. ⟨halshs-04435989⟩

Mémoires d’Amédée Bussière, préfet de Corse (1929-1930)

Auteur(s) : Author(s) : Autor(es) : Antoine Franzini

Références bibliographiques : References : Referencias : Antoine Franzini. Mémoires d’Amédée Bussière, préfet de Corse (1929-1930). Bulletin de la Société des Sciences historiques et naturelles de la Corse, 2023, 778-779, pp.123-148. ⟨hal-04416640⟩

Les usages médiatiques du mot « populisme » lors de la Quatrième République brésilienne (1946-1964), et leurs échos contemporains

Auteur(s) : Author(s) : Autor(es) : Maud Chirio

Références bibliographiques : References : Referencias : Maud Chirio. Les usages médiatiques du mot « populisme » lors de la Quatrième République brésilienne (1946-1964), et leurs échos contemporains. Revue d'Histoire Moderne et Contemporaine, 2023, n° 71 (2), pp.81-91. ⟨10.3917/rhmc.702.0083⟩. ⟨hal-04330823⟩

DOI : 10.3917/rhmc.702.0083

Nature et urbanisation. Campements collectifs ou cités-jardins

Auteur(s) : Author(s) : Autor(es) : Pierre-Olaf Schut

Références bibliographiques : References : Referencias : Pierre-Olaf Schut. Nature et urbanisation. Campements collectifs ou cités-jardins. Nature et récréation, 2023, 14. ⟨halshs-04318630⟩

Convaincre le lecteur de s’engager dans un projet de transformation corporelle : analyses croisées des techniques argumentaires mobilisées par les concepteurs de trois méthodes de culture physique

Auteur(s) : Author(s) : Autor(es) : Matthieu Quidu, Matthieu Delalandre, Brice Favier-Ambrosini

Références bibliographiques : References : Referencias : Matthieu Quidu, Matthieu Delalandre, Brice Favier-Ambrosini. Convaincre le lecteur de s’engager dans un projet de transformation corporelle : analyses croisées des techniques argumentaires mobilisées par les concepteurs de trois méthodes de culture physique. Sciences sociales et sport, A paraître, 23, pp.63-100. ⟨hal-04135258⟩

Rattacher la Loire-Atlantique à la Bretagne lors de la réforme territoriale de 2015 ? Une approche par la géopolitique des médias.

Auteur(s) : Author(s) : Autor(es) : Annaig Oiry, Yann Richard

Références bibliographiques : References : Referencias : Annaig Oiry, Yann Richard. Rattacher la Loire-Atlantique à la Bretagne lors de la réforme territoriale de 2015 ? Une approche par la géopolitique des médias.. Annales de géographie, 2023, ⟨10.3917/ag.752.0005⟩. ⟨hal-04388109⟩

DOI : 10.3917/ag.752.0005

Sociologie de la race : compte rendu de lecture de l’ouvrage de Solène Brun et Claire Cosquer (2022)

Auteur(s) : Author(s) : Autor(es) : Théoxane Camara, Marine Duc

Références bibliographiques : References : Referencias : Théoxane Camara, Marine Duc. Sociologie de la race : compte rendu de lecture de l’ouvrage de Solène Brun et Claire Cosquer (2022). Appartenances & Altérités, 2023, n°4, ⟨10.4000/alterites.1033⟩. ⟨hal-04428403⟩

DOI : 10.4000/alterites.1033

Citations et circulations révolutionnaires dans les graffitis contemporains (France)

Auteur(s) : Author(s) : Autor(es) : Mathilde Larrère

Références bibliographiques : References : Referencias : Mathilde Larrère. Citations et circulations révolutionnaires dans les graffitis contemporains (France). 20 & 21. Revue d'histoire, 2023, 156 (4), pp.169-191. ⟨10.3917/vin.156.0169⟩. ⟨hal-04357581⟩

DOI : 10.3917/vin.156.0169

Le longe-côte, une activité physique de santé en pleine nature

Auteur(s) : Author(s) : Autor(es) : Valerie Schwob, Jeanne-Maud Jarthon

Références bibliographiques : References : Referencias : Valerie Schwob, Jeanne-Maud Jarthon. Le longe-côte, une activité physique de santé en pleine nature. Movement & Sport Sciences - Science & Motricité, 2023, 122, pp.41-52. ⟨10.1051/sm/2023018⟩. ⟨hal-04281118⟩

DOI : 10.1051/sm/2023018

Géographies du travail. Du côté des travailleurs et des travailleuses

Auteur(s) : Author(s) : Autor(es) : Amandine Chapuis, Jean Estebanez, Fabrice Ripoll, Jean Rivière

Références bibliographiques : References : Referencias : Amandine Chapuis, Jean Estebanez, Fabrice Ripoll, Jean Rivière. Géographies du travail. Du côté des travailleurs et des travailleuses. Carnets de géographes, 2023, 17, ⟨10.4000/cdg.9703⟩. ⟨halshs-04413631⟩

DOI : 10.4000/cdg.9703

LES GLÉNANS : HISTOIRE DU TOURISME NAUTIQUE DANS LES PORTS BRETONS

Auteur(s) : Author(s) : Autor(es) : Marion Philippe

Références bibliographiques : References : Referencias : Marion Philippe. LES GLÉNANS : HISTOIRE DU TOURISME NAUTIQUE DANS LES PORTS BRETONS. Nature et récréation, 2022. ⟨hal-03913161⟩

Pierre-Benoît Roumagnou, Dans l’orbite de Paris. Les habitants de la banlieue et la justice (v. 1670-v. 1789), Paris, Classiques Garnier, 2020

Auteur(s) : Author(s) : Autor(es) : Diane Roussel

Références bibliographiques : References : Referencias : Diane Roussel. Pierre-Benoît Roumagnou, Dans l’orbite de Paris. Les habitants de la banlieue et la justice (v. 1670-v. 1789), Paris, Classiques Garnier, 2020. Histoire urbaine, 2022, ⟨10.58079/u4x4⟩. ⟨hal-04409900⟩

DOI : 10.58079/u4x4

Le Dio vi salvi Regina. Retour sur la vulgate

Auteur(s) : Author(s) : Autor(es) : Antoine Franzini

Références bibliographiques : References : Referencias : Antoine Franzini. Le Dio vi salvi Regina. Retour sur la vulgate. Storia corsa, 2022, 8, pp.80-95. ⟨hal-04416716⟩

De l’inaptitude au capacitaire en EPS : discussion autour d’un environnement scolaire capacitant

Auteur(s) : Author(s) : Autor(es) : Aline Paintendre, Yacine Tajri

Références bibliographiques : References : Referencias : Aline Paintendre, Yacine Tajri. De l’inaptitude au capacitaire en EPS : discussion autour d’un environnement scolaire capacitant. Recherches & éducations, 2022, HS, ⟨10.4000/rechercheseducations.12729⟩. ⟨hal-03813884⟩

DOI : 10.4000/rechercheseducations.12729

L’évolution du culte impérial dans les provinces grecques au lendemain de la mort d’Auguste

Auteur(s) : Author(s) : Autor(es) : Gabrielle Frija

Références bibliographiques : References : Referencias : Gabrielle Frija. L’évolution du culte impérial dans les provinces grecques au lendemain de la mort d’Auguste. Dialogues d'histoire ancienne, 2022, 48/2 (2), pp.327-346. ⟨10.3917/dha.482.0327⟩. ⟨hal-03907355⟩

DOI : 10.3917/dha.482.0327

Sports Spectating in Connected Stadiums : Mobile Application Roland Garros 2018

Auteur(s) : Author(s) : Autor(es) : Pierre-Olaf Schut, Ekaterina Glebova

Références bibliographiques : References : Referencias : Pierre-Olaf Schut, Ekaterina Glebova. Sports Spectating in Connected Stadiums : Mobile Application Roland Garros 2018. Frontiers in Sports and Active Living, 2022, 4, ⟨10.3389/fspor.2022.802852⟩. ⟨hal-03634801⟩

DOI : 10.3389/fspor.2022.802852

Lotharingica 2010-2020

Auteur(s) : Author(s) : Autor(es) : Jens Schneider

Références bibliographiques : References : Referencias : Jens Schneider. Lotharingica 2010-2020. Francia. Forschungen zur westeuropäischen Geschichte, 2022, 49, pp.429-455. ⟨hal-03884349⟩

Remunerating Labour in a Long- Term Perspective: An Introduction

Auteur(s) : Author(s) : Autor(es) : Corine Maitte, Andrea Caracausi

Références bibliographiques : References : Referencias : Corine Maitte, Andrea Caracausi. Remunerating Labour in a Long- Term Perspective: An Introduction. Comparativ, 2022, 32 (1), pp.9-16. ⟨10.26014/j.comp.2022.01.01⟩. ⟨hal-04318738⟩

DOI : 10.26014/j.comp.2022.01.01

Imaginar a Colombia. Una poética de la Independencia (1784-1830).

Auteur(s) : Author(s) : Autor(es) : Georges Lomné

Références bibliographiques : References : Referencias : Georges Lomné. Imaginar a Colombia. Una poética de la Independencia (1784-1830).. Boletín de la Academia Nacional de la Historia , 2022, CV (419), pp.9-40. ⟨hal-04266946⟩

The role of sports clubs to integrate people with disabilities

Auteur(s) : Author(s) : Autor(es) : Jérémy Pierre, Pierre-Olaf Schut, Benoit Segay

Références bibliographiques : References : Referencias : Jérémy Pierre, Pierre-Olaf Schut, Benoit Segay. The role of sports clubs to integrate people with disabilities. Managing Sport and Leisure, 2022, pp.1-18. ⟨10.1080/23750472.2022.2135584⟩. ⟨hal-04249040⟩

DOI : 10.1080/23750472.2022.2135584

Editorial

Auteur(s) : Author(s) : Autor(es) : Marie Delaplace, Pierre-Olaf Schut

Références bibliographiques : References : Referencias : Marie Delaplace, Pierre-Olaf Schut. Editorial. Via Tourism Review, 2022, 22, ⟨10.4000/viatourism.9000⟩. ⟨hal-04231809⟩

DOI : 10.4000/viatourism.9000

Vitalité, déclin et abandon des sanctuaires : problèmes historiques et méthodologiques (Italie centro-méridionale, iiie s. av. n.è. – ier s. de n.è.)

Auteur(s) : Author(s) : Autor(es) : Audrey Bertrand

Références bibliographiques : References : Referencias : Audrey Bertrand. Vitalité, déclin et abandon des sanctuaires : problèmes historiques et méthodologiques (Italie centro-méridionale, iiie s. av. n.è. – ier s. de n.è.). Bulletin de correspondance hellénique-supplément, 2022, 64, pp.65-80. ⟨10.4000/books.efa.14944⟩. ⟨hal-04739765⟩

DOI : 10.4000/books.efa.14944

Laurence Munoz, Yves Morales et Yohann Fortune (dir.), L’implication sociale du mouvement sportif associatif : la FSCF entre permanence et mutations . Lille : Septentrion, 2021, 300 p.

Auteur(s) : Author(s) : Autor(es) : Marion Philippe

Références bibliographiques : References : Referencias : Marion Philippe. Laurence Munoz, Yves Morales et Yohann Fortune (dir.), L’implication sociale du mouvement sportif associatif : la FSCF entre permanence et mutations . Lille : Septentrion, 2021, 300 p.. STAPS : Revue internationale des sciences du sport et de l'éducation physique, 2022, n° 137 (3), pp.161-163. ⟨10.3917/sta.pr1.0046⟩. ⟨halshs-04328782⟩

DOI : 10.3917/sta.pr1.0046

Archives and Potentiality in Jordanian Jerusalem (1948–1967)

Auteur(s) : Author(s) : Autor(es) : Vincent Lemire, Maria-Chiara Rioli

Références bibliographiques : References : Referencias : Vincent Lemire, Maria-Chiara Rioli. Archives and Potentiality in Jordanian Jerusalem (1948–1967). Jerusalem Quarterly, 2022, 92, https://www.palestine-studies.org/en/node/1653473. ⟨halshs-04511267⟩

Inférieurs et inclus : les Juifs et la société dans une illustration allemande du XIIe siècle

Auteur(s) : Author(s) : Autor(es) : Pierre Savy

Références bibliographiques : References : Referencias : Pierre Savy. Inférieurs et inclus : les Juifs et la société dans une illustration allemande du XIIe siècle. RevueAlarmer, 2022. ⟨hal-04416166⟩

Engagements universitaires équivoques en terrain d’innovation énergétique

Auteur(s) : Author(s) : Autor(es) : Annaig Oiry

Références bibliographiques : References : Referencias : Annaig Oiry. Engagements universitaires équivoques en terrain d’innovation énergétique. Carnets de géographes, 2022, 16, ⟨10.4000/cdg.8149⟩. ⟨hal-04415171⟩

DOI : 10.4000/cdg.8149

L’eau, un élément de récréation dans la ville

Auteur(s) : Author(s) : Autor(es) : Antoine Marsac

Références bibliographiques : References : Referencias : Antoine Marsac. L’eau, un élément de récréation dans la ville. Juristourisme : le mensuel des acteurs du tourisme & des loisirs [Juris tourisme], 2022, 253, pp.29-32. ⟨10.1080/14927713.2021.1886869⟩. ⟨hal-04484608⟩

DOI : 10.1080/14927713.2021.1886869

De la Résistance à l'école de voile des Glénans : l’action d’Hélène et Philippe Viannay en faveur de l’éducation des jeunes (1947-1982)

Auteur(s) : Author(s) : Autor(es) : Marion Philippe

Références bibliographiques : References : Referencias : Marion Philippe. De la Résistance à l'école de voile des Glénans : l’action d’Hélène et Philippe Viannay en faveur de l’éducation des jeunes (1947-1982). European studies in sports history, 2022, 13. ⟨hal-04770760⟩

Per una rivalutazione della storia, del tempo di lavoro (Europa occidentale, XIV-XIX secolo)

Auteur(s) : Author(s) : Autor(es) : Corine Maitte, Didier Terrier

Références bibliographiques : References : Referencias : Corine Maitte, Didier Terrier. Per una rivalutazione della storia, del tempo di lavoro (Europa occidentale, XIV-XIX secolo). Economia&lavoro, 2022, LVI (2), pp.13-30. ⟨10.7384/106070⟩. ⟨hal-04318746⟩

DOI : 10.7384/106070

La correction, c’était mieux avant ?

Auteur(s) : Author(s) : Autor(es) : Diane Roussel, Elisabeth Lusset

Références bibliographiques : References : Referencias : Diane Roussel, Elisabeth Lusset. La correction, c’était mieux avant ?. Politis, 2022, 1703. ⟨hal-04387610⟩

La construcción de una Educación Física y Deportiva en Francia : la dificil evolución de una disciplina escolar que se hace extensiva a los alumnos discapacitados a partir de los años sesenta

Auteur(s) : Author(s) : Autor(es) : Yacine Tajri, Jean Saint-martin, Tony Froissart

Références bibliographiques : References : Referencias : Yacine Tajri, Jean Saint-martin, Tony Froissart. La construcción de una Educación Física y Deportiva en Francia : la dificil evolución de una disciplina escolar que se hace extensiva a los alumnos discapacitados a partir de los años sesenta. Materiales paria la Historia del Deporte, 2022, 22, pp.126-139. ⟨halshs-04039643⟩

Des configurations géographiques en mouvement : l’immigration dans les espaces peu denses français

Auteur(s) : Author(s) : Autor(es) : Julie Fromentin

Références bibliographiques : References : Referencias : Julie Fromentin. Des configurations géographiques en mouvement : l’immigration dans les espaces peu denses français. Cybergeo : Revue européenne de géographie / European journal of geography, 2022, Espace, Société, Territoire, [en ligne] (document 1037), https://journals.openedition.org/cybergeo/39893. ⟨10.4000/cybergeo.39893⟩. ⟨hal-03922763⟩

DOI : 10.4000/cybergeo.39893

Édito : À l'école de la ville

Auteur(s) : Author(s) : Autor(es) : Marine Duc, Camille Vergnaud

Références bibliographiques : References : Referencias : Marine Duc, Camille Vergnaud. Édito : À l'école de la ville. revue Urbanités, 2022, À l'école de la ville, 16. ⟨halshs-03946749⟩

Sulla “corsa degli ebrei” del Salone dei Mesi

Auteur(s) : Author(s) : Autor(es) : Pierre Savy

Références bibliographiques : References : Referencias : Pierre Savy. Sulla “corsa degli ebrei” del Salone dei Mesi. Schifanoia, 2022, 62-63, pp.97-108. ⟨hal-04414251⟩

Construire une EPS inclusive en France : l’évolution laborieuse d’une discipline scolaire s’ouvrant aux élèves handicapés depuis les années 1960

Auteur(s) : Author(s) : Autor(es) : Yacine Tajri, Jean Saint-martin, Tony Froissart

Références bibliographiques : References : Referencias : Yacine Tajri, Jean Saint-martin, Tony Froissart. Construire une EPS inclusive en France : l’évolution laborieuse d’une discipline scolaire s’ouvrant aux élèves handicapés depuis les années 1960. Materiales para la Historia del Deporte, 2022, 22, pp.112-125. ⟨10.20868/mhd.2022.22.4634⟩. ⟨halshs-04039653⟩

DOI : 10.20868/mhd.2022.22.4634

Introduction

Auteur(s) : Author(s) : Autor(es) : Antoine Chabod, Paul Cournarie

Références bibliographiques : References : Referencias : Antoine Chabod, Paul Cournarie. Introduction. Cahiers des Etudes anciennes, 2022, Visibilité, lisibilité, efficacité : les inscriptions monumentales en Grèce et à Rome, 59. ⟨hal-04143394⟩

The role of sports clubs to integrate people with disabilities

Auteur(s) : Author(s) : Autor(es) : Jérémy Pierre, Pierre-Olaf Schut, Benoit Segay

DOI : 10.1080/23750472.2022.2135584

Travail : l’enfer de la cadence, XVIIe-XXIe siècle

Auteur(s) : Author(s) : Autor(es) : Corine Maitte, Didier Terrier

Références bibliographiques : References : Referencias : Corine Maitte, Didier Terrier. Travail : l’enfer de la cadence, XVIIe-XXIe siècle. L'Histoire, 2022, 497 (8), pp.98-103. ⟨hal-04321826⟩

De la Résistance à l’école de voile des Glénans : l’action d’Hélène et Philippe Viannay en faveur de l’éducation des jeunes (1947-1982).

Auteur(s) : Author(s) : Autor(es) : Marion Philippe

Références bibliographiques : References : Referencias : Marion Philippe. De la Résistance à l’école de voile des Glénans : l’action d’Hélène et Philippe Viannay en faveur de l’éducation des jeunes (1947-1982).. European studies in sports history, 2022, 13. ⟨halshs-03146131⟩

Universités et territoires en région parisienne : De la planification à la métropolisation (1945-2021)

Auteur(s) : Author(s) : Autor(es) : Loic Vadelorge

Références bibliographiques : References : Referencias : Loic Vadelorge. Universités et territoires en région parisienne : De la planification à la métropolisation (1945-2021). Annales de la Société franco-japonaise des Sciences de l'Éducation, 2022, 51, pp.5-26. ⟨hal-04270920⟩

Contrôler et alourdir les impôts

Auteur(s) : Author(s) : Autor(es) : Clément Carnielli

Références bibliographiques : References : Referencias : Clément Carnielli. Contrôler et alourdir les impôts. Documenta. Rivista internazionale di studi storico filogici sulle fonti, 2022, 5, pp.71-85. ⟨10.19272/202213801006⟩. ⟨hal-04314828⟩

DOI : 10.19272/202213801006

La grande muraille de Gortyne sans lecteur ? Le soi-disant Code comme monument d’apparat civique

Auteur(s) : Author(s) : Autor(es) : Antoine Chabod

Références bibliographiques : References : Referencias : Antoine Chabod. La grande muraille de Gortyne sans lecteur ? Le soi-disant Code comme monument d’apparat civique. Cahiers des Etudes anciennes, 2022, Visibilité, lisibilité, efficacité : les inscriptions monumentales en Grèce et à Rome, 59. ⟨hal-04143417⟩

Pour une géographique critique... et réflexive !

Auteur(s) : Author(s) : Autor(es) : Joanne Le Bars, Amandine Chapuis, Leila Frouillou, Anne-Laure Pailloux, Fabrice Ripoll, Mathieu Uhel

Références bibliographiques : References : Referencias : Joanne Le Bars, Amandine Chapuis, Leila Frouillou, Anne-Laure Pailloux, Fabrice Ripoll, et al.. Pour une géographique critique... et réflexive !. Carnets de géographes, 2022, 16. ⟨hal-04351946⟩

De la surveillance des mers à l’exploitation des terres. Le long chemin de Rome aux côtes dalmates (IVe s. av. n.è.-IIIe s. de n.è.)

Auteur(s) : Author(s) : Autor(es) : Audrey Bertrand, Emmanuel Botte, Kristina Jelinčić

Références bibliographiques : References : Referencias : Audrey Bertrand, Emmanuel Botte, Kristina Jelinčić. De la surveillance des mers à l’exploitation des terres. Le long chemin de Rome aux côtes dalmates (IVe s. av. n.è.-IIIe s. de n.è.). Mélanges de l'Ecole française de Rome - Antiquité, 2022, 134-1, pp.71-88. ⟨10.4000/mefra.12793⟩. ⟨hal-04739755⟩

DOI : 10.4000/mefra.12793

Foreign presence in the Southwest French countryside. Contribution of recent initiatives to the social and economic diversification of rural areas

Auteur(s) : Author(s) : Autor(es) : William Berthomière, Julie Fromentin, Camille Hochedez, Christophe Imbert, David Lessault, Pierre Pistre, Sarah Przybyl

Références bibliographiques : References : Referencias : William Berthomière, Julie Fromentin, Camille Hochedez, Christophe Imbert, David Lessault, et al.. Foreign presence in the Southwest French countryside. Contribution of recent initiatives to the social and economic diversification of rural areas. Cybergeo : Revue européenne de géographie / European journal of geography, 2022, 995, ⟨10.4000/cybergeo.39673⟩. ⟨halshs-03833128⟩

DOI : 10.4000/cybergeo.39673

Physical activity and sedentarism among seniors in France, and their impact on health

Auteur(s) : Author(s) : Autor(es) : Jérémy Pierre, Cécile Collinet, Pierre-Olaf Schut, Charlotte Verdot

Références bibliographiques : References : Referencias : Jérémy Pierre, Cécile Collinet, Pierre-Olaf Schut, Charlotte Verdot. Physical activity and sedentarism among seniors in France, and their impact on health. PLoS ONE, 2022, 17 (8), pp.e0272785. ⟨10.1371/journal.pone.0272785⟩. ⟨hal-04228110⟩

DOI : 10.1371/journal.pone.0272785

Éditorial : Les migrations internationales au cœur de l’agriculture et de l’agroalimentaire industriels

Auteur(s) : Author(s) : Autor(es) : Bénédicte Michalon, Serge Weber

Références bibliographiques : References : Referencias : Bénédicte Michalon, Serge Weber. Éditorial : Les migrations internationales au cœur de l’agriculture et de l’agroalimentaire industriels. Revue Européenne des Migrations Internationales, 2022, Travail agricole et migrations, 38 (3-4), pp.7-18. ⟨10.4000/remi.20963⟩. ⟨halshs-03833631⟩

DOI : 10.4000/remi.20963

Handicap et pratique physique : une pluralité de trajectoires

Auteur(s) : Author(s) : Autor(es) : Matthieu Delalandre, Cécile Collinet, Jeanne-Maud Jarthon

Références bibliographiques : References : Referencias : Matthieu Delalandre, Cécile Collinet, Jeanne-Maud Jarthon. Handicap et pratique physique : une pluralité de trajectoires. Recherches & éducations, 2022. ⟨hal-03769612⟩

L’homme lotharingien

Auteur(s) : Author(s) : Autor(es) : Jens Schneider

Références bibliographiques : References : Referencias : Jens Schneider. L’homme lotharingien. Annales de l'Est, 2022, 72, pp.61-79. ⟨hal-04246631⟩

Handicap et pratique physique : une pluralité de trajectoires

Auteur(s) : Author(s) : Autor(es) : Matthieu Delalandre, Cécile Collinet, Jeanne-Maud Jarthon

DOI : 10.4000/rechercheseducations.12570

Eiffel

Parity permutation pattern matching

Références bibliographiques : References : Referencias : Virginia Ardévol Martínez, Florian Sikora, Stéphane Vialette. Parity permutation pattern matching. Algorithmica, 2024, 86 (8), pp.2605-2624. ⟨10.1007/s00453-024-01237-0⟩. ⟨hal-04875776⟩

DOI : 10.1007/s00453-024-01237-0

Les lieux nommés d’après Marceline Desbordes-Valmore

Références bibliographiques : References : Referencias : Philippe Gambette. Les lieux nommés d’après Marceline Desbordes-Valmore. J'écris pourtant : bulletin de la Société des études Marceline Desbordes-Valmore, 2024, 5, pp.87-98. ⟨hal-04722547⟩

On the enumeration of plane bipolar posets and transversal structures

Références bibliographiques : References : Referencias : Éric Fusy, Erkan Narmanli, Gilles Schaeffer. On the enumeration of plane bipolar posets and transversal structures. European Journal of Combinatorics, 2024, Trends in Mathematics, 116 (C), pp.103870. ⟨10.1007/978-3-030-83823-2_90⟩. ⟨hal-03809732v2⟩

DOI : 10.1007/978-3-030-83823-2_90

Conics, Their Pencils and Intersections in Geometric Algebra

Références bibliographiques : References : Referencias : Clément Chomicki, Stéphane Breuils, Venceslas Biri, Vincent Nozick. Conics, Their Pencils and Intersections in Geometric Algebra. Advances in Applied Clifford Algebras, 2024, 35, pp.1. ⟨10.1007/s00006-024-01356-5⟩. ⟨hal-04774264⟩

DOI : 10.1007/s00006-024-01356-5

Is the protactinium(V) mono-oxo bond weaker than what we thought?

Références bibliographiques : References : Referencias : Tamara Shaaban, Hanna Oher, Jean Aupiais, Julie Champion, André Severo Pereira Gomes, et al.. Is the protactinium(V) mono-oxo bond weaker than what we thought?. Chemical Communications, 2024, 60, pp.14376-14379. ⟨10.1039/D4CC04522J⟩. ⟨hal-04690060⟩

DOI : 10.1039/D4CC04522J

The effects of semantic simplifications on random BST-like expression-trees

Références bibliographiques : References : Referencias : Florent Koechlin, Pablo Rotondo. The effects of semantic simplifications on random BST-like expression-trees. Discrete Mathematics, 2024, 347 (5), pp.113906. ⟨10.1016/j.disc.2024.113906⟩. ⟨hal-04484412⟩

DOI : 10.1016/j.disc.2024.113906

Analysis of Classifier-Free Guidance Weight Schedulers

Références bibliographiques : References : Referencias : Xi Wang, Nicolas Dufour, Nefeli Andreou, Marie-Paule Cani, Victoria Fernández Abrevaya, et al.. Analysis of Classifier-Free Guidance Weight Schedulers. Transactions on Machine Learning Research Journal, 2024, ⟨10.48550/arXiv.2404.13040⟩. ⟨hal-04823146⟩

DOI : 10.48550/arXiv.2404.13040

Toric Geometry of Entropic Regularization

Références bibliographiques : References : Referencias : Bernd Sturmfels, Simon Telen, François-Xavier Vialard, Max von Renesse. Toric Geometry of Entropic Regularization. Journal of Symbolic Computation, 2024, ⟨10.1016/j.jsc.2023.102221⟩. ⟨hal-04435868⟩

DOI : 10.1016/j.jsc.2023.102221

Threshold-Based Responsive Simulated Annealing for Directed Feedback Vertex Set Problem

Références bibliographiques : References : Referencias : Qingyun Zhang, Yuming Du, Zhouxing Su, Chu-Min Li, Junzhou Xu, et al.. Threshold-Based Responsive Simulated Annealing for Directed Feedback Vertex Set Problem. Proceedings of the AAAI Conference on Artificial Intelligence, 2024, 38 (18), pp.20856-20864. ⟨10.1609/aaai.v38i18.30075⟩. ⟨hal-04524415⟩

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DeConFCluster: Deep Convolutional Transform Learning based Multiview Clustering Fusion Framework

Références bibliographiques : References : Referencias : Pooja Gupta, Anurag Goel, Angshul Majumdar, Emilie Chouzenoux, Giovanni Chierchia. DeConFCluster: Deep Convolutional Transform Learning based Multiview Clustering Fusion Framework. Signal Processing, In press, 224 (109597), ⟨10.1016/j.sigpro.2024.109597⟩. ⟨hal-04635484⟩

DOI : 10.1016/j.sigpro.2024.109597

Approximate Message Passing for sparse matrices with application to the equilibria of large ecological Lotka-Volterra systems

Références bibliographiques : References : Referencias : Walid Hachem. Approximate Message Passing for sparse matrices with application to the equilibria of large ecological Lotka-Volterra systems. Stochastic Processes and their Applications, 2024, 170, pp.104276. ⟨10.1016/j.spa.2023.104276⟩. ⟨hal-04000125v2⟩

DOI : 10.1016/j.spa.2023.104276

Distinct Shortest Walk Enumeration for RPQs

Références bibliographiques : References : Referencias : Claire David, Nadime Francis, Victor Marsault. Distinct Shortest Walk Enumeration for RPQs. Proceedings of the ACM on Management of Data, 2024, 2 (2), pp.1-22. ⟨10.1145/3651601⟩. ⟨hal-04495051⟩

DOI : 10.1145/3651601

Infrared: a declarative tree decomposition-powered framework for bioinformatics

Références bibliographiques : References : Referencias : Hua-Ting Yao, Bertrand Marchand, Sarah Berkemer, Yann Ponty, Sebastian Will. Infrared: a declarative tree decomposition-powered framework for bioinformatics. Algorithms for Molecular Biology, 2024, 19 (1), pp.13. ⟨10.1186/s13015-024-00258-2⟩. ⟨hal-04211173v2⟩

DOI : 10.1186/s13015-024-00258-2

Unsupervised discovery of Interpretable Visual Concepts

Références bibliographiques : References : Referencias : Caroline Mazini Rodrigues, Nicolas Boutry, Laurent Najman. Unsupervised discovery of Interpretable Visual Concepts. Information Sciences, 2024, 661, pp.120159. ⟨10.1016/j.ins.2024.120159⟩. ⟨hal-04190721v3⟩

DOI : 10.1016/j.ins.2024.120159

A phase transition in block-weighted random maps

Références bibliographiques : References : Referencias : William Fleurat, Zéphyr Salvy. A phase transition in block-weighted random maps. Electronic Journal of Probability, 2024, 29, ⟨10.1214/24-EJP1089⟩. ⟨hal-04491449⟩

DOI : 10.1214/24-EJP1089

Incremental Watershed Cuts: Interactive Segmentation Algorithm with Parallel Strategy

Références bibliographiques : References : Referencias : Quentin Lebon, Josselin Lefèvre, Jean Cousty, Benjamin Perret. Incremental Watershed Cuts: Interactive Segmentation Algorithm with Parallel Strategy. Pattern Recognition Letters, 2024, ⟨10.1016/j.patrec.2024.12.005⟩. ⟨hal-04536919v2⟩

DOI : 10.1016/j.patrec.2024.12.005

Évidemment, (que) c’est moi !" Sur un emploi ironique de l’adverbe "évidemment

Références bibliographiques : References : Referencias : Christiane Marque-Pucheu, Takuya Nakamura. "Évidemment, (que) c’est moi !" Sur un emploi ironique de l’adverbe "évidemment". Les cahiers de praxématique, 2024, 82, ⟨10.4000/12ew1⟩. ⟨hal-04725517⟩

DOI : 10.4000/12ew1

An extended Attribute-based access control with controlled delegation in IoT

Références bibliographiques : References : Referencias : Saher Tegane, Khaled Hamouid, Mawloud Omar, Fouzi Semchedine, Abdelmalek Boudries. An extended Attribute-based access control with controlled delegation in IoT. Journal of information security and applications, 2024, 82, pp.103747. ⟨10.1016/j.jisa.2024.103747⟩. ⟨hal-04583201⟩

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Performance Comparison of Augmented Reality Versus Ultrasound Guidance for Puncture: A Phantom Study

Références bibliographiques : References : Referencias : Laetitia Saccenti, Hugo Bessy, Bilel Ben Jedidia, Benjamin Longere, Lionel Tortolano, et al.. Performance Comparison of Augmented Reality Versus Ultrasound Guidance for Puncture: A Phantom Study. CardioVascular and Interventional Radiology, 2024, ⟨10.1007/s00270-024-03727-8⟩. ⟨hal-04595114⟩

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Immunogenetics in hematopathology and hematology: why a common language is important

Références bibliographiques : References : Referencias : Kostas Stamatopoulos, Elspeth Bruford, Elias Campo, Marie-Paule Lefranc. Immunogenetics in hematopathology and hematology: why a common language is important. Leukemia, 2024, 38 (7), pp.1474-1476. ⟨10.1038/s41375-024-02260-4⟩. ⟨hal-04784842⟩

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LSTM-Based GNSS Localization using Satellite Measurement Features jointly with Pseudorange Residuals

Références bibliographiques : References : Referencias : Ibrahim Sbeity, Christophe Villien, Benoit Denis, Elena Veronica Belmega. LSTM-Based GNSS Localization using Satellite Measurement Features jointly with Pseudorange Residuals. Sensors, 2024, 24 (3), pp.10.3390/s24030833. ⟨10.3390/s24030833⟩. ⟨cea-04567630⟩

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From Expert Computational Knowledge to Interdisciplinary Communication

Références bibliographiques : References : Referencias : Eva Dokladalova, Rédha Hamouche, Rémy Kocik. From Expert Computational Knowledge to Interdisciplinary Communication. Journal of Systemics, Cybernetics and Informatics, 2024, 22 (3), pp.13-19. ⟨10.54808/JSCI.22.03.13⟩. ⟨hal-04613801⟩

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Smart dynamic evacuation planning and online management using vehicular communication system

Références bibliographiques : References : Referencias : Hassan Idoudi, Mostafa Ameli, Cyril Nguyen van Phu, Mahdi Zargayouna, Abderrezak Rachedi. Smart dynamic evacuation planning and online management using vehicular communication system. Computer-Aided Civil and Infrastructure Engineering, 2024, 39 (10), pp 1452-1468. ⟨10.1111/mice.13148⟩. ⟨hal-04474069⟩

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Data-dependent Generalization Bounds via Variable-Size Compressibility

Références bibliographiques : References : Referencias : Milad Sefidgaran, Abdellatif Zaidi. Data-dependent Generalization Bounds via Variable-Size Compressibility. IEEE Transactions on Information Theory, In press, ⟨10.1109/TIT.2024.3414266⟩. ⟨hal-04457385⟩

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Stochastic Subgradient Descent Escapes Active Strict Saddles on Weakly Convex Functions

Références bibliographiques : References : Referencias : Pascal Bianchi, Walid Hachem, Sholom Schechtman. Stochastic Subgradient Descent Escapes Active Strict Saddles on Weakly Convex Functions. Mathematics of Operations Research, 2024, 49 (3), pp.1761-1790. ⟨10.1287/moor.2021.0194⟩. ⟨hal-03442137v3⟩

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Bijective proof of a conjecture on unit interval posets

Références bibliographiques : References : Referencias : Wenjie Fang. Bijective proof of a conjecture on unit interval posets. Discrete Mathematics and Theoretical Computer Science, 2024, vol. 26:2 (Combinatorics), ⟨10.46298/dmtcs.10837⟩. ⟨hal-04486630⟩

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Near-optimal estimation of smooth transport maps with kernel sums-of-squares

Références bibliographiques : References : Referencias : Boris Muzellec, Adrien Vacher, Francis Bach, François-Xavier Vialard, Alessandro Rudi. Near-optimal estimation of smooth transport maps with kernel sums-of-squares. SIAM Journal on Mathematics of Data Science, In press. ⟨hal-03466696⟩

CoVR-2: Automatic Data Construction for Composed Video Retrieval

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Monadic Expressions and Their Derivatives

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The tree-child network inference problem for line trees and the shortest common supersequence problem for permutation strings

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UGV Charging Stations for UAV-Assisted AoI-Aware Data Collection

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Pinnacle sets revisited

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Global solution of Quadratic Problems by Interval Methods and Convex Relaxations

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A Corpus of Critical Citations Contexts

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Climate Science at the Interface Between Topological Data Analysis and Dynamical Systems Theory

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Le don par Marceline Desbordes-Valmore du portrait de son père au musée de la Chartreuse

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Quand dire et faire font deux : "on dit ça" ou la contestation implicite de l’énonciation

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Representing Matroids over the Reals is $\exists \mathbb R$-complete

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Parity Permutation Pattern Matching

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Bijections for generalized Tamari intervals via orientations

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Recognizability in S-adic shifts

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Transforming gradient-based techniques into interpretable methods

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Assessing hierarchies by their consistent segmentations

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An Algorithmic Framework for Locally Constrained Homomorphisms

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Parabolic Tamari Lattices in Linear Type B

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InAlGaN-based HEMT with very low Ohmic contact resistance regrown at 850 °C by MOVPE

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Complex systems in Ecology: A guided tour with large Lotka-Volterra models and random matrices

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On the existence of Monge maps for the Gromov-Wasserstein problem

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A reliable instrument for making use of an overly neglected source of information on personality: The French adaptation of the Big Five Inventory-2 (Bfi-2) informant-report form

Références bibliographiques : References : Referencias : Baptiste Lignier, Jean-Michel Petot, Pierre de Oliveira, Michel Nicolas, Brice Canada, et al.. A reliable instrument for making use of an overly neglected source of information on personality: The French adaptation of the Big Five Inventory-2 (Bfi-2) informant-report form. L'Encéphale, 2024, 50 (4), pp.391-399. ⟨10.1016/j.encep.2023.08.005⟩. ⟨hal-04763938⟩

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Articles, software, data: An Open Science ethological study

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Playing Guess Who with your kids: Code-word strategy against adversaries

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Combinatorics of the Quantum Symmetric Simple Exclusion Process, associahedra and free cumulants

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Managing a Resilient Multitier Architecture for Unstable IoT Networks in Location Based-Services

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From IoT Networks Deployment to Robust Location-based Services using the Digital Twin of a Building

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Random generation of subgroups of the modular group with a fixed isomorphism type

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Topological Node2vec: Enhanced Graph Embedding via Persistent Homology

Références bibliographiques : References : Referencias : Yasuaki Hiraoka, Yusuke Imoto, Théo Lacombe, Killian Meehan, Toshiaki Yachimura. Topological Node2vec: Enhanced Graph Embedding via Persistent Homology. Journal of Machine Learning Research, In press. ⟨hal-04447021⟩

Booléens en programmation : une analyse à destination des enseignants

Références bibliographiques : References : Referencias : Sylvie Alayrangues, Olivier Baudon, Emmanuel Beffara, Ronan Charpentier, Sébastien Daniel, et al.. Booléens en programmation : une analyse à destination des enseignants. Recherches et recherches-actions en didactique de l'informatique, 2024, 1, pp.1-33. ⟨hal-03812698v2⟩

Bernoulli variables, classical exclusion processes and free probability

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