C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
204/119, 204/88.
C23F 13/02 (2006.01)
Patent
CA 1231077
ABSTRACT OF THE DISCLOSURE The present invention relates to a cathodic protec- tion system for reinforced concrete structures, having rein- forced steel embedded in the concrete mix. The system in- cludes an electrically conductive coating composition applied in fluid form over an outer surface of the concrete mix. The coating composition, when dry, comprises a permeable binder material through which moisture permeates preventing entrap- ment of moisture in the reinforced concrete structure. The composition further includes a predetermined amount of elec- trically conductive filler material uniformly distributed in the binder material whereby the coating composition has a predetermined value of resistivity. The coating composition protects the reinforced concrete structure from corrosion when electrical energy flows through the coating composition. The system further includes a source of DC electrical energy connective between the reinforcing steel and the electrically conducted coating composition such that the electrically con- ductive coating composition is anodic with respect to the reinforcing steel.
444609
Nicholson John P.
Ridout & Maybee Llp
LandOfFree
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