| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jebli, Mouad
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Experimental evaluation of interface adhesion of a flax fiber composite patch with epoxy and polyurethane adhesives for the reinforcement of steel structurescitations
- 2024Experimental evaluation of interface adhesion of a flax fiber composite patch with epoxy and polyurethane adhesives for the reinforcement of steel structurescitations
- 2023Identification of a cohesive zone model for cement paste-aggregate interface in a shear testcitations
- 2023Experimental evaluation of interface adhesion of a flax fiber composite patch with epoxy and polyurethane adhesives for the reinforcement of steel structurescitations
- 2021Characterization of the expansion due to the delayed ettringite formation at the cement paste-aggregate interfacecitations
- 2021Characterization of the expansion due to the delayed ettringite formation at the cement paste-aggregate interfacecitations
- 2020Identification of a cohesive zone model for cement paste-aggregate interface in a shear testcitations
- 2020Experimental study of the chemo-mechanical properties of the interfacial transition zone of concrete
- 2020Leaching effect on concrete - Part I: characterization of chemical degradation evolution of ITZ ; Efectul levigării asupra betonului -partea I: caracterizarea evoluției degradării chimice a zonei de tranziție inter facială
- 2020Leaching effect on concrete – Part II: mechanical behaviour evolution of ITZ during leaching at the local scale
- 2020Leaching effect on concrete – Part II: mechanical behaviour evolution of ITZ during leaching at the local scale ; Efectul levigării asupra betonului – partea a ii-a: evoluția comportării mecanice a itz în timpul levigării la scară locală
- 2020Caractérisation à l’échelle locale de la dégradation de l’interphase ciment-granulat par un traitement hygrothermique
- 2020Leaching effect on concrete -part I: characterization of chemical degradation evolution of ITZ
- 2019Identification of a cohesive zone model for cement paste-aggregate interface in a shear testcitations
- 2018Leaching effect on mechanical properties of cement-aggregate interfacecitations
- 2018Leaching effect on mechanical properties of cement-aggregate interfacecitations
- 2018Experimental characterization of mechanical properties of the cement-aggregate interface in concretecitations
- 2018Experimental characterization of mechanical properties of the cement-aggregate interface in concretecitations
- 2018Caractérisation de l'expansion due à la réaction sulfatique interne à l'échelle de l'interphase pâte de ciment-granulat
- 2018Caractérisation expérimentale des propriétés chimio-mécaniques de l'interphase pâte de ciment-granulat par MEB et nano-indentation
- 2016Characterization of behavior and cracking of a cement paste confined between spherical aggregate particlescitations
- 2016Characterization of behavior and cracking of a cement paste confined between spherical aggregate particlescitations
- 2016Characterization at the local scale of mechanical properties of the cement paste-aggregate interface : leaching application
Places of action
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article
Characterization of the expansion due to the delayed ettringite formation at the cement paste-aggregate interface
Abstract
Delayed Ettringite Formation (DEF), is one of the different Internal Sulfate Attack (ISA), is a slow chemical reaction that can be responsible for the degradation of cementitious materials, through the swelling of the material followed by crack diffusion in the structure. The objective of this study is the experimental characterization at the local scale (10 x 10 x 30 mm 3 samples) of the concrete reached by DEF. The composite samples, consist of a 15 mm thick cement paste placed in contact with a siliceous aggregate. The shape of these samples makes it possible to study the mechanical behavior of the interface between the cement paste and the aggregate. This zone is identified as a privileged zone of the development of DEF. Given the slowness of this pathology, the experimental setting in the laboratory is accelerated by choosing conditions favoring the appearance of DEF. The tests are exploited at the local scale by measuring expansions by image correlation of the degraded samples and by scanning electron microscope observations. The results showed a higher expansion at the cement paste-aggregate interface compared to the cement paste. A tensile test performed at local scale allowed to characterize the impact of DEF on mechanical properties of the cement paste-aggregate interface. A drop in strength was observed with heterogeneous formation and localization of ettringite inside the interface.