Corrosion is the primary cause of repairs to reinforced concrete bridges and other civil structures.

Galvanic corrosion protection systems have been developed to provide long-term corrosion protection to existing concrete structures suffering from corrosion. Through the partnership and support of structure owners such as Ohio Department of Transportation, Ontario Ministry of Transportation, Florida Department of Transportation and Transport New South Wales these systems have been installed and monitored on bridge decks and substructures for many years. Some of these structures have been monitored for over 20 years. This paper presents the development, installation and 20-year field performance of these galvanic corrosion protection systems and how this real-world performance data can be used to design long-life galvanic corrosion protection systems to extend the service life of reinforced concrete structures.

Subject
Depolarization, Concrete repair, Hydroxides, Corrosion currents, Zinc anodes, Repair, Metals, Lithium, Anodic current, Steel, Zinc, Concrete, Anodes
Keywords:
corrosion, corrosion protection, galvanic, cathodic protection, concrete, rehabilitation
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2023
Association for Materials Protection and Performance (AMPP)
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