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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: Concrete Cracking by Localized Steel Corrosion-- Geometric Effects
Author(s): Andres A. Torres-Acosta and Alberto A. Sagues
Publication: Materials Journal
Appears on pages(s): 501-507
Keywords: corrosion; cracking; expansion
Abstract:This work experimentally estimated the critical amount of steel corrosion (xCRIT) needed for concrete cover cracking of a reinforced concrete element when only a fraction of the steel bar length is corroding. The amount of corrosion needed to crack the concrete cover (xCRIT) was 0.030 to 0.272 mm in specimens with localized corrosion, in comparison to 0.003 to 0.074 mm for more uniform corrosion reported for other investigations in comparable systems. An empirical equation is proposed for xCRIT as a function of specimen dimensions (concrete clear cover C, reinforcing bar diameter f , and anodic length L). In this equation, xCRIT is approximately proportional to the product of the first power of C/f and the square of [C/L + 1].
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