ABSTRACT
The control of the efficiency of CP, ECE and ER in controlling or eliminating corrosion is precisely one of the aspects still lacking for full satisfaction of the users. Thus, in the case of CP, due to the permanent cathodic polarization, the methods used for checking absence of corrosion (Instant-off potential or depolarized potential) give only indirect information on the real corrosion state of the reinforcement. In the case of ECE and ER, it is necessary to drill cores after the treatment or to wait weeks to verify the absence of corrosion. It seems a desirable goal to develop nondestructive methods to verify the efficiency of these treatments during their application and at the end, in order to have a contractual parameter to be easily checked by the owner of the structure. In the present paper, new methods to control the efficiency during and after the treatment are presented for the three techniques.
