DURABILITE DES OUVRAGES MARINS EN BETON ARME : " PHENOMENE DE LA CORROSION DES ACIERS" CAS – SKT-

Abstract

The main risk identified in terms of durability of reinforced concrete in marine environment is linked to the penetration of a severely aggressive agent : chlorides. This phenomena cause the corrosion of reinforcement of concrete. The subject is widely studied in the world because the economic part is very important. The penetration of the ions chlorides is the essential physico-chemical cause which reduces the service life of the works to reinforced concrete by corrosion of the armatures. She depends mainly on characteristics of materials and on environmental conditions. As the resultant damage of this phenomenon is very important financially, he adorned the main part to improve the resistance of the concrete in the penetration of this aggressive agent. As such, the determination of the profile of the concentrations in ions chlorides inside the cementitious matrix is of a major importance because she allows to estimate the time(weather) required by chlorides to reach(affect) the armatures in sufficiency for depassivat the steel.