Coupling between mechanical and transfer properties and expansion due to DEF in a concrete of a nuclear power plant

Abstract : This paper focuses on studying the consequences of expansion due to delayed ettringite formation (DEF) on transfer and mechanical properties of concrete in the case of nuclear structures. It concerns a concrete representative of a containment vessel of a nuclear power plant where temperature variations at early age are very large. An experimental heat treatment, representative of the temperature history in the raft foundation of the containment vessel was reproduced after a modeling of its temperature rise. After this treatment, concrete exhibits swelling due to the development of DEF. The gas permeability is increased significantly after swelling, and the safety requirements expected by these structures are thus affected.
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https://hal.archives-ouvertes.fr/hal-00950315
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Submitted on : Friday, February 21, 2014 - 11:31:56 AM
Last modification on : Wednesday, December 19, 2018 - 3:02:08 PM

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Mohamad Al Shamaa, Stéphane Lavaud, Loïc Divet, Georges Nahas, Jean Michel Torrenti. Coupling between mechanical and transfer properties and expansion due to DEF in a concrete of a nuclear power plant. Nuclear Engineering and Design, Elsevier, 2014, pp 70-77. ⟨10.1016/j.nucengdes.2013.10.014⟩. ⟨hal-00950315⟩

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