Resistance to Permeation of Chloride Ion in Steam Cured Concrete

Abstract

It is important to quantify the permeability of chloride ions in steam-cured concrete to evaluate the durability of precast concrete. However, until now, there has been little research on this issue. In this study, the diffusion of chloride ions was determined by an exposure test on steam cured concrete specimens and seal cured concrete specimens. The permeability of chloride ions was estimated based on the diffusion of chloride ions. The results indicated that exposure of steam cured specimens that contain a large amount of non-reactive cement to an environment that supplies ample moisture reduces the diffusion of chloride ions. Moreover, the chloride ion diffusion coefficient of concrete was found to decline with exposure time.