Reinforced concrete structures can corrode if they are exposed to chlorides or if the pH of the concrete decreases over time. Arc-sprayed zinc coatings are versatile and can be used as part of a cathodic protection system to halt corrosion and extend service life. Arc-sprayed zinc coatings are multi-functional and can be used as part of impressed current cathodic protection systems or they can be used to provide galvanic cathodic protection.

This paper describes the development and use of arc-sprayed zinc coatings for cathodic protection of steel in reinforced concrete structures.

Arc-sprayed zinc coatings were first used in 1983 as part of an impressed current cathodic protection systems. Activated and inactivated arc-sprayed zinc coatings were first used for galvanic cathodic protection in 1988

System descriptions, project lists and performance data for arc-sprayed zinc in both impressed current cathodic protection and galvanic cathodic protection applications will be presented.

Subject
Steel structures, Zinc rich coatings, Coating application, Impressed current cathodic protection, Cathodic protection, Rebar, Zinc anodes, Concrete surfaces, Transportation, Impressed current, Zinc, Bridges, Concrete
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2022
Association for Materials Protection and Performance (AMPP)
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