GSC
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:::GSC SuperAnode GALVANIC ANODES FOR STEEL IN CONCRETE A GACP system utilises anodes which generate a natural DC current to suppress the corrosion of the steel in concrete. GSC Super Anodes are specifically designed to inhibit corrosion of concrete reinforced structures using GACP. The anodes are typically embedded within the concrete or repair mortar and are electrically connected to the reinforcement by using galvanised ties. As zinc is less noble than steel it means that the anode has a more electronegative potential than the reinforcement steel. This makes the zinc the anode and the steel reinforcement the cathode. Current will flow from anode to cathode inhibiting rebar corrosion thus avoiding concrete cracking and spalling in the presence of chloride salts within the concrete . This allows a relatively small amount of anodes to be distributed within the structure thereby reducing manpower requirements and costs if desired, performance can be monitored easily by on-site personnel Application of GSC SuperAnode on new structures GSC SUPERANODE DESCRIPTION The GSC SuperAnodes are made of laminated zinc > 99.95% purity covered by two layers of different zinc-anode-activator-paste. Each anode is vacuum sealed in a plastic bag to avoid contamination during shipping and storing. Prior to application the packing is removed, and the anode is ready to be installed. GSC SuperAnodes are supplied in the following sizes:

APPLICATION A) EXISTING STRUCTURES In existing reinforced structures, CP is an integral part of the rehabilitation concept and is aimed to decrease the corrosion rate of the steel reinforcement from significant to negligible values. CP can be used independently irrespective of the chloride concentrations and in fact the electric field will inhibit chloride ion migration towards the steel. The re-passivation of the steel due to the different electrochemical reactions forced by the electric field will make also positive contribution to the structure’s life span. Current density The current...