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Chloride-induced corrosion of steel reinforcement in concrete is a major problem in the construction industry. The addition of a corrosion inhibitor to the concrete mix offers a practical solution to this problem. This study uses cyclic anodic polarization to show that calcium nitrite is an effective anodic inhibitor in a concrete-type environment. Furthermore, it is shown how anodic polarization can be used to determine the potential regions where steel is susceptible to rapid corrosion in the absence of chloride ions.
cyclic polarization, anodic polarization, pitting, corrosion, steels, chlorides, nitrites, inhibitors, concrete corrosion, alkaline corrosion, anodic inhibitors
Research engineer associate, W. R. Grace & Co., Cambridge, MA