This paper reports the development of an impressed current anode for the cathodic protection of steel reinforced rebar in concrete. The application of a DC current on a carbon fiber reinforced polymer, used both as a structural reinforcement and as an anode surface, allows to polarize the steel in concrete. It is then possible to combine the strengthening function with the development of a multifunctional composite allowing protecting of steel rebar from corrosion and also allowing the monitoring of repairing function versus time. In this technique, the steel/electrolyte interface is electrically polarized using external impressed current. Application on beams and columns of matrix is reported on an iconic building, the Belfry of Le Touquet’s town in the north of France. A comparison with the use of Ti/MMO discrete anodes is presented in the case of a pilot test.

Subject
Steel structures, Water, Anodic protection, Cathodic protection, Impressed current anodes, Anodic current, Carbon fiber, Carbon, Reinforced concrete, Elements, Concrete, Reinforcement, Anodes
Keywords:
reinforced concrete, cathodic protection, anode, carbon fiber, infrastructure
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2022
Association for Materials Protection and Performance (AMPP)
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