Capillary suction and diffusion model for chloride ingress into concrete

Authors: Conciatori, David; Sadouki, Hamid; Brühwiler, Eugen
Abstract: A numerical approach, named TransChlor, is proposed to simulate transport phenomena of various substances in concrete. This approach is a theoretical model based on finite elements and finite differences methods. The model consists of coupled nonlinear partial differential equations based on Fick's diffusion law and on kinematics equations. Simulation results from a parametrical study highlight the influence of microclimatic conditions, exposure to deicing salts and concrete cover permeability and thickness on chloride ingress in concrete. The results show that the chloride ion concentration increases quickly in concrete cover when a structure is exposed to deicing salts at a mountainous location; whereas permeability of concrete cover is an insignificant parameter when the concrete is in direct or splash water contact.
Document Type: Article de recherche
Issue Date: 8 August 2008
Open Access Date: 25 March 2019
Document version: AM
This document was published in: Cement and Concrete Research, Vol. 38 (12), 1401–1408 (2008)
Elsevier Science
Alternative version: 10.1016/j.cemconres.2008.06.006
Collection:Articles publiés dans des revues avec comité de lecture

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