MONITORING AND CORROSION RESISTANCE VERIFICATION OF COLDSPRAY TECHNOLOGY USED ON CORRODED GIRDER ENDS

Abstract

Since steel bridge girder ends are weak points for corrosion, it is necessary to develop highly durable corrosion prevention techniques. The authors developed a method of restoring corrosion protection performance based on Cold Spray technology and applied it to the girder ends of an actual bridge with corrosion damage. In this study, the corrosion protection performance of the cold spray coating was demonstrated by focusing on the mechanism of corrosion damage in each structural member through continuous observation of the condition under corrosive environment for 8 years.