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Etude du fluage des bétons en traction. Application aux enceintes de confinement des centrales nucléaires à eau sous pression.

Abstract : The aim of this work is to study experimentally and to conduct numerical simulations on the creep of concrete subjected to tensile stresses. The main purpose is to predict the behaviour of containment vessels of nuclear power plants (PWR) in the case of decennial test or accident. In order to satisfy to these industrial needs, it is necessary to characterize the behaviour of concrete under uniaxial tension. Thus, an important experimental study of tensile creep in concrete has been performed for different loading levels (50%, 70% and 90% of the tensile strength). In these tests, load was kept constant during 3 days. Several tests were performed: measurements of elastic properties and strength (in tension and in compression), monitoring of drying, shrinkage, basic creep and drying creep strains. Moreover, compressive creep tests were also performed and showed a difference with tensile creep. Furthermore, decrease of tensile strength and failure under tensile creep for large loading levels were observed. A numerical model has been proposed and developed in Cast3m finite element code.
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Submitted on : Wednesday, February 17, 2010 - 2:54:56 PM
Last modification on : Monday, December 14, 2020 - 9:48:20 AM
Long-term archiving on: : Friday, June 18, 2010 - 6:26:19 PM

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  • HAL Id : tel-00457486, version 1

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Nanthilde Reviron. Etude du fluage des bétons en traction. Application aux enceintes de confinement des centrales nucléaires à eau sous pression.. Matériaux. École normale supérieure de Cachan - ENS Cachan, 2009. Français. ⟨tel-00457486⟩

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