Study on Time-varying Law of Chloride Ion Concentration at Concrete Surface in Coastal Salt-fog Environment

Abstract

This paper simulated salt-fog environment in coastal area, by using comprehensive salt-fog corrosion box, through dry-wet circulation salt-fog spray method, carried out the experimental study of chloride ion concentration at concrete structure surface. Discusses the time-varying accumulation law of chloride ion concentration at concrete surface in salt-fog environment, revised the existing time-varying model of surface chloride ion concentration, put forward the improved time-varying law model of surface chloride ion concentration of salt-fog environment, and explored the influence of surface chloride ion concentration and its accumulation law by different chlorine salt solution concentration. The research conclusions have significant reference value for evaluating the durability of concrete construction.