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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: Chloride-Induced Corrosion of Epoxy-Coated Steel in Saturated Ca(OH)2 Solution and in Concrete
Author(s): J. Havdahl, B.B. Hope and C. M. HanssonJ. Havdahl, B.B. Hope and C. M. Hansson
Publication: Special Publication
Appears on pages(s): 397-420
Keywords: Chlorides; coatings; corrosion; durability; epoxy resins; reinforced
Abstract:The use of epoxy coated steel reinforcement in concrete serves to contribute to service life extension in aggressive environments especially where proper procedures for handling and placing of the steel are followed. In this study, it is shown the durability of these steel bars exposed in saturated calcium hydroxide (Ca(OH)2) solution and/or concrete is affected by the presence of chlorides. Test parameters included measurement of electrochemical potential and electrical resistance changes with exposure time, and corrosion monitoring using DC linear polarization (LPR) and electrochemical impedance spectroscopy (EIS). Corrosion damage was particularly critical at all as received flaws and holidays, and also deterioration was detected around the bends and patched coating areas.
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