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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Cathodic Protection of Concrete Bridge Decks
Author(s): Richard E. Weyers and Philip D. Cady
Publication: Journal Proceedings
Appears on pages(s): 618-622
Keywords: bridge decks; cathodic protection; corrosion; economics; evaluation;
Abstract:Protecting aging bridge decks containing black (bare) steel reinforcement from the corrosive effects of deicing salts is of critical concern to the nation’s highway agencies. The use of cathodic protection for corrosion resistance is highly attractive from the viewpoint of simplicity and potential long-term effectiveness. This paper presents the theory the corrosion of reinforcing steel in concrete and cathodic protection theory. Cathodic protection design considerations as applied to concrete bridge decks are reviewed. In addition, the three cathodic protection systems (sacrificial-anode, conductive- layer, wire-anode) used for concrete bridge decks are also reviewed. The advantages and disadvantages of each of the three systems are pointed out, as are the factors that must be resolved before cathodic protection of bridge decks surpasses the experimental stage. An economic analysis indicates that cathodic protection is not yet competitive with the conventional repair/rehabilitation/replacement processes; however, this situation may be reversed in the near future as field implementation procedures, con tractor familiarity, methods, and materials improve.
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