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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: Study of Bond Stress-Slip Relationships in Reinforced Concrete
Author(s): Saeed M. Mirza and Jules Houde
Publication: Journal Proceedings
Appears on pages(s): 19-46
Keywords: bond (concrete to reinforcement); bond stress; calibrating; compressive strength; cover; cracking (fracturing); crack propagation; crack width and spacing; deformations (reinforcing steels); deformed reinforcement; finite element method.
Abstract:This paper reports the results of tests on 62 concentric tension specimens (38 reinforced with #8 bars, 12 with #6 bars and 12 with #4 bars). Thirteen of these tests were conducted on specimens reinforced with special internally instrumented #8 bars to obtain the tensile force distribution along the specimen. Record of end slips, elongation of the embedded bar, and crack formation and propagation was made in all cases. A bond stress-slip relationship is derived from the experimental data and it accounts for the following parameters: load level, thickness of the concrete cover, and the concrete strength. This constitutive relationship can be used to calculate the stiffness of the discrete pullout springs connecting the steel and the concrete nodes in a finite element formulation of a reinforced concrete member.
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