C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
204/119, 204/188
C23F 13/16 (2006.01) C23F 13/10 (2006.01)
Patent
CA 2031123
A grid electrode having a tailored surface for cathodic protection of steel rebar reinforced concrete structures comprising a plurality of valve metal strips having voids and optionally valve metal strips without voids, said strips having an electrocatalytic surface and being disposed on the surface of the concrete structure, connected together to form the grid electrode, the ratio of grid electrode surface to the steel surface density being suitably selected to maintain a uniform cathodic protection current density throughout the concrete structure avoiding underprotection and/or overprotection areas. The present invention further discloses the method for forming said grid electrode onto the structure to be cathodically protected, covering the grid electrode with an ion conductive overlay and the structure prepared thereby.
Industrie de Nora S.p.a.
Macrae & Co.
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