ABSTRACT
Although bound chlorides will contribute to corrosion development, still there is no sufficient evidence to prove a correlation between the chloride binding and chloride threshold levels.
During the electrochemical treatment process, it has been observed that sodium silicate gel and calcium hydroxide are by-products of the treatment which will fill the pores and the interface voids of the concrete. These will provide a reservoir of hydroxyl ions at the steel which suggests that electrochemical treatments not only arrest corrosion but they also increase the reservoir of OH-which then increases the chloride threshold levels.
