Analysis Of Chloride Diffusion Into Corner Zone Concrete And Surface-Coating Concrete

Abstract

Chloride penetration into concrete is the main cause of the corrosion of steel in concrete structure exposed to chloride-rich environments. In most of analysis in current literature, the chloride diffusion is simplified as a one-dimensional diffusion process. But for the rebar in the corner zone of concrete beam, the diffusion belongs to two-dimensional diffusion. Based on finite element galerkin method, a two diffusion model is built. For combating chloride ions diffusion, surface treatments have been increasingly applied to both new and existing concrete structures and have an apparent effect on anticorrosion of chloride ion. Based on the mathematical in literature, the influence of surface treatment on chloride diffusion is studied with a finite difference model.