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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: Rational Approach to Corrosion Protection of the Concrete Components of Highway Bridges
Author(s): David G. Manning
Publication: Special Publication
Appears on pages(s): 1527-1548
Keywords: bridges (structures); concrete durability; corrosion resistance; cover; epoxy resins; highway bridges; protective coatings; reviews; reinforcing steels; Design
Abstract:The deterioration of highway structures, primarily as a result of the corrosion of embedded reinforcement, has resulted in changes in materials, design, and construction techniques with the intent of improving durability. This paper traces the development of corrosion protection requirements in Ontario over a 30-year period. The methods of achieving positive protection for superstructure and substructure components are presented, including warrants for the use of epoxy-coated reinforcement, the use of increased concrete cover, the adoption of higher qualities of concrete, and increases in member thickness. The result of implementing these changes has been the evolution of a rational approach to durability of highway bridges, of which corrosion protection is a vital component. Corrosion protection is provided in individual components according to the severity of the service environment and, in the most severe exposure conditions, includes multiple protection systems such that redundancy is provided.
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