EVALUATION FOR THE SURFACE STATE OF WEATHERING STEEL BRIDGES WITH SUPPLEMENTAL RUST CONTROLLING SURFACE TREATMENT

Abstract

 Since surfaces of the weathering steel bridges with supplemental rust controlling treatment show ununiformly-distributed weathering properties, it is difficult for inexpert engineers to judge its surface states only by known visual inspection method. In order to improve such situation, the applicability of ion transfer resistance method to surface treated weathering steel bridges is verified. It is confirmed that the method based on ion transfer resistance measurement is very useful to evaluate the degradation stages of weathering steel bridges which are coated with supplemental rust controlling film.