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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: Basis for Determining Minimum Cover Requirement for Durability
Author(s): S. Guirguis
Publication: Special Publication
Appears on pages(s): 447-468
Keywords: carbonation; chlorides; concrete durability; corrosion; cover; diffusion; permeability; reinforced concrete; reinforcing steels; Design
Abstract:Based on the present state of knowledge regarding the time to initiation of corrosion, the paper describes a procedure for rationally determining the minimum concrete cover required to protect reinforcing steel against corrosion. The paper uses data that have become available from recent research and literature. It addresses the main factors involved in the initiation phase of the corrosion mechanism: carbonation and chloride diffusion. It also addresses the factor of water penetration into concrete because presence of moisture is necessary for the corrosion process to continue. The procedure presented in the paper can be used to derive minimum cover requirements for corrosion protection on steel in concrete cured for various periods and subject to various exposure conditions.
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