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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: The Moment-Curvature Relationship of Reinforced Concrete
Author(s): Domingo J. Carreira and Kuang-Han Chu
Publication: Journal Proceedings
Appears on pages(s): 191-198
Keywords: cracking (fracturing); deflection; moment-curvature relationship;
reinforced concrete; strains; stresses; stress-strain diagram.
Abstract:Presents a general method to compute the location of the zero strain surface and the curvature-versus-moment relationship. The method consists of solving a nonlinear second degree equation. Concrete nonlinear stress-strain diagrams in compression and tension showing ascending and descending branches are used to evaluate the effects of the reinforcement ratio and cracking on the curvature-versus-moment relationship. The agreement between the theoretical results and the experimental data is remarkably good. Limitations in the experimental data to determine the curvature are discussed in terms of the gage length, its location with respect to the plane of the reinforcement, and the elapsed time between loading and strain measurement.
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