Rôles de la température et de la composition sur le couplage thermo-hydro-mécanique des bétons

Abstract : The French project of the storage of nuclear wastes, which is managed by the Andra, needs some experimental data on the durability of the concrete. Loadings which are taken into account are the desaturation/resaturation processes, the heat load and the mechanical evolution. Hence this study focuses on the coupling thermo-hydro-mechanical on concretes of the research program of Andra, made with CEM I and CEM V/A cement type. The water saturation degree and shrinkages of materials, which are subjected to desiccation or resaturation, are dependent on the imposed thermal and hydrous conditions and on their microstructural characteristics. Moreover the study of the mechanical evolution is gone further at 20°C in function of the water saturation degree. Different short-term tests highlight a hydrous damage, which determine the mechanical behaviour. The long-term study of desiccation creep shows the coupling between the durability, the mechanical evolution and the desiccation
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Engineering Sciences [physics]. Ecole Centrale de Lille, 2009. French. <NNT : 2009ECLI0015>


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Flore Brue. Rôles de la température et de la composition sur le couplage thermo-hydro-mécanique des bétons. Engineering Sciences [physics]. Ecole Centrale de Lille, 2009. French. <NNT : 2009ECLI0015>. <tel-00578753>

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