C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 13/02 (2006.01)
Patent
CA 2288630
The present invention relates to the field of cathodic protection of reinforced concrete. A conductive metal is thermally applied onto an exposed surface of the concrete in an amount effective to form an anode on the surface. This establishes an interface between the anode and the concrete. The thermal application is performed in a manner which is effective to impart permeability to the anode. A solution or dispersion comprising a surface active agent capable of wetting the anode external surface and a humectant is applied to the external surface of the anode. The solution or dispersion migrates by capillary attraction to the interface of the anode with the concrete depositing the humectant at the interface. The humectant functions as a current enhancing agent. The humectant also absorbs moisture from the atmosphere thereby providing an electrolyte at the interface. These combined effects substantially increase current delivery from the anode. A preferred humectant is a lithium salt.
Bennett Jack E.
Fetherstonhaugh & Co.
LandOfFree
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