An Experimental Study on Corrosion Critical Chloride Contents of Rebar Embedded in Concrete with Admixture

혼화재 혼입 콘크리트에 매립된 철근의 부식 임계염화물 산정에 관한 실험적 연구

The purpose of this study is to compare the amount of critical chloride of rebar embedded in concrete according to the substitution rate of admixture. In order to determine the starting point of corrosion of rebar, electrodes were embedded in concrete, chloride was supplied, and OCP of rebar was observed in real time. The amount of the contaminants in the concrete surrounding the rebar was judged to be the critical corrosion chloride contents of the rebar at the start of the corrosion. As a result of the comparative evaluation, it was confirmed that the critical chloride contents of the rebar decreased with increasing the substitution ratio of the admixture.