Experimental Study on Electrochemical Chloride Extraction from Mortar

Abstract:

An orthogonal experiment was carried out to study the effects of factors such as current density, initial chloride content, type of electrolytes and extraction time on extraction efficiency and bond strength of reinforced mortar.The test results show that current density is the primary factor to affect the extraction efficiency,and the factor of extraction time the secondary. Increasing current density accelerates the removal rate of chloride, and prolonging extraction time increases the amount of chloride extraction. The factors that remarkably influence extraction efficiency also obviously affect loss of bond strength between rebar and mortar. Thus, in practice engineering, both of these two aspects are proposed to be taken into consideration when choosing extraction parameters.