Long-term Protection Effects of Electrochemical Chloride Removal on Reinforced Concretes

摘要

From the visual condition, steel corrosion status, chloride content,concrete strength and other aspects, reinforecd concrete structures after electrochemical chloride extraction treatment nearly 10 years were surveyed and detected, and the results showed that the structure surface had a good appearance and no obvious deterioration,the content of chloride ions in concrete was low, the content of chloride ions around rebar areas was far lower than the critical value,the rebar remained in fully passive condition, the electrochemical chloride extraction treatment had no significant influence on the concrete strength, the seal coat on the structure surface was relative complete, but the aging phenomenon such as color alteration, adhesion strength reduction etc. was found on the surface, except for some discoloration and reduced adhesion strength.