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Physicochemical modelling of chloride ingress into cementitious materials

Thai Quang Nguyen 
Abstract : The main purpose of this research is to propose a physico-chemical model of chloride ingress in cement based materials submitted to a saline environment such as structures exposed to sea-water or deicing salts. The model takes into account the diffusion, the advection, the electrostatic coupling between ions of the pore solution and the salt crystallization, chloride binding or more general ion- matrix interactions. In fact, chloride ions diffuse in the pore solution of a cement-based material, react with unreacted aluminate phases to form new compounds such as Friedel's salt and also are adsorbed onto C-S-H. To account for these binding phenomena, a physico-chemical approach is developed which addresses separately physical adsorption of chlorides onto C-S-H layers, as a result of exchange between Cl
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Submitted on : Tuesday, June 17, 2008 - 8:00:00 AM
Last modification on : Monday, October 19, 2020 - 11:07:52 AM
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  • HAL Id : pastel-00003829, version 1



Thai Quang Nguyen. Physicochemical modelling of chloride ingress into cementitious materials. Engineering Sciences [physics]. Ecole des Ponts ParisTech, 2007. English. ⟨pastel-00003829⟩



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