Experimental study on corrosion inhibition effect of temporary coating performed with bridge inspection

Abstract

This study examined experimentally corrosion inhibition effect of temporary coating performed with bridge inspection through accelerated exposure tests. Because it is difficult to remove completely corrosion of steel substrates surface performed with bridge inspection, the temporary coating is carried out by spray painting without surface preparations of steel substrates. The corrosion inhibition effect of temporary coating is evaluated quantitatively by the variation of thickness of steel specimen before and after the accelerated exposure tests. As the result, it was confirmed that thickness reduction quantity of steel specimen coated temporarily was reduced more by approximately 50% in five years than that of steel specimen without temporary coating.