Modelling and simulations of the chemo-mechanical behaviour of leached cement-based materials: Interactions between damage and leaching

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2010.04.002· OSTI ID:21483644

Stora, E ^[1]; Bary, B ^[1]; He, Q -C ^[2]; Deville, E; Montarnal, P ^[3]

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1. Atomic Energy Commission, CEA Saclay DEN/DANS/DPC/SCCME/Laboratoire d'Etude du Comportement des Betons et des Argiles, 91191 Gif sur Yvette (France)
2. Universite Paris-Est, Laboratoire de Modelisation et Simulation Multiechelle, FRE3160 CNRS, 5 boulevard Descartes, 77454 Marne-la-Vallee Cedex 2 (France)
3. CEA Saclay DEN/DANS/DM2S/SFME/MTMS, 91191 Gif sur Yvette (France)

The assessment of the durability of cement-based materials, which could be employed in underground structures for nuclear waste disposal, requires accounting for deterioration factors, such as chemical attacks and damage, and for the interactions between these phenomena. The objective of the present paper consists in investigating the long-term behaviour of cementitious materials by simulating their response to chemical and mechanical solicitations. In a companion paper (Stora et al., submitted to Cem. Concr. Res. 2008), the implementation of a multi-scale homogenization model into an integration platform has allowed for evaluating the evolution of the mineral composition, diffusive and elastic properties inside a concrete material subjected to leaching. To complete this previous work, an orthotropic micromechanical damage model is presently developed and incorporated in this numerical platform to estimate the mechanical and diffusive properties of damaged cement-based materials. Simulations of the chemo-mechanical behaviour of leached cementitious materials are performed with the tool thus obtained and compared with available experiments. The numerical results are insightful about the interactions between damage and chemical deteriorations.

• OSTI ID: 21483644
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 8 Vol. 40; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BEHAVIOR
BUILDING MATERIALS
CEMENTS
CONCRETES
DAMAGE
DIFFUSION
DISSOLUTION
ELASTICITY
INTERACTIONS
LEACHING
MANAGEMENT
MATERIALS
MECHANICAL PROPERTIES
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE MANAGEMENT
SEPARATION PROCESSES
SIMULATION
WASTE DISPOSAL
WASTE MANAGEMENT