Research on the Anti-corrosion Performance of Corrosion Inhibitor under Salt Freeze-Thaw Cycles

Abstract

In this study, a multifunctional corrosion inhibitor (referred to as CI) was incorporated into C30 concrete. The effect of CI on the free chloride content, Tafel curves of reinforcement, and quality loss rate (QLR) were investigated under salt freeze-thaw cycles (SFTCs). Additionally, the scanning electron microscope (SEM) was employed to examine the corrosion of the reinforcement surface. The results indicated that CI was beneficial in reducing the internal free chloride content within the concrete. It could also form an adsorption film on the reinforcement surface, effectively lowering the corrosion rate and minimizing QLR, and providing excellent protection for the steel reinforcement.