Cathodic protection system for reinforced concrete including anode of valve metal mesh

Abstract From the Canadian patent

The invention relates to extended area electrodes and in particular anodes and anode connectors. Such anodes are useful in various applications such as impressed current cathodic protection systems, electro-osmosis of water logged areas and electro damp-proofing. Some anode materials such as copper are rapidly consumed while metals of the platinum group are substantially unaffected but are expensive. The anode of the invention comprises a plurality of wires of valve metal in the form of an open mesh, the wires having on their surface a material such as a platinum group metal which has anodically active properties. The mesh structure, which may be used as a connector to a further electrode …