A STUDY ON THE EVALUATION OF CHLORIDE-ION PENETRATION INTO THE CONCRETES UNDER A MARINE ENVIRONMENT

This paper presents the data on the chloride-ion penetration into concretes with and without mineral admixtures under a marine environment. From the results, it was found that concretes with mineral admixtures were much less permeable to chloride ions than the corresponding OPC concretes, and that their chloride-ion penetration into concrete was limited only in the surface of 30 to 40mm during 7 years of exposure to a marine environment. The results also showed that the coulomb values obtained from RCPT correlated well with both the diffusion coefficient for chloride ions and the depth of chloride-ion penetration after 7 years of exposure to a marine environment.