Abstract
This paper investigates the performance of carbon fibre reinforced polymer (CFRP) as a dual function material in combined impressed current cathodic protection and structural strengthening of reinforced concrete structures. Tests in solution showed that CFRP maintain stable electrical conductivity after 80 d accelerated anodic polarization. Results suggest that oxygen evolution occurring at low chloride ion concentration ([Cl−]) primarily damages the carbon fibre, while chlorine evolution occurring at high [Cl−] primarily damages the epoxy resin. The tensile strength of CFRP after anodic polarization decreases with increasing circulated charge, and, for a given circulated charge, it increases with increasing [Cl−].
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