Use of electrochemical noise for studying the rate of corrosion of reinforcements embedded in concrete

The ratio of the standard deviations of oscillations in the corrosion potential and open-circuit current about their mean values has been used lately for calculating the noise polarization resistance (R p, noise ). In this work, the ability of this method to obtain quantitative information on the corrosion rate of steel reinforcements embedded in concrete was analysed. In addition, the discriminating capacity of electrochemical noise as regards active and passive zones in reinforcements containing both was investigated.