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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: Flexural Cracking Behavior of Pretensioned and Post-Tensioned
Beams: The State of the Art
Author(s): Edward G. Nawy
Publication: Journal Proceedings
Appears on pages(s): 890-900
Keywords: beams (supports); bonding; compressive strength; continuous beams; cover; cracking (fracturing); crack width and spacing; deformed reinforcement;
Abstract:A mathematical model was applied to tests on simply supported pretensioned and post-tensioned beams and on continuous beams to evaluate crack widths in partially prestressed beams at working load and overload. Variation in percentage of steel reinforcement of prestressed tendons and nonprestressed reinforcement were major controlling parameters. Equations are proposed to relate the maximum weighted crack width to increase in reinforcement stress and concrete area in tension.
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