Title:
Chloride Attack through Concrete: Time Effects
Author(s):
A. Khitab, S. Lorente, and J.-P. Ollivier
Publication:
Symposium Paper
Volume:
234
Issue:
Appears on pages(s):
191-204
Keywords:
chloride; concrete; experiments; modeling
DOI:
10.14359/15937
Date:
3/22/2006
Abstract:
The penetration of chloride through cement-based materials is of great importance because chlorides are one of the main agents contributing to the corrosion of reinforcing bars in concrete. The concrete must act as a barrier that protects the reinforcing steel. Thus, the durability of the structure depends on the transport properties of concrete.This work documents the issue of chloride penetration through CEM-I concrete structures. Immersion tests have been carried out with a sodium chloride solution. Several times of exposure are tested along with the influence of the material age on the chloride ingress. Additionally it is shown through a numerical model how a multi-species description of the ionic transport contributes to the prediction of chloride penetration.