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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: Behavior of Large-Scale Reinforced Concrete Beams with Minimum Shear Reinforcement
Author(s): Robert J. Frosch
Publication: Structural Journal
Appears on pages(s): 814-820
Keywords: beam; shear; size effect
Abstract:Research has indicated that as the depth of a beam increases, a decrease in the shear strength of the section can be expected. This trend has often been termed a size effect. Testing of specimens unreinforced in shear has also demonstrated that it is possible for the shear strength to fall below that commonly assumed in design. Most sections, however, contain at least minimum transverse reinforcement as required by the building code. Therefore, it is important to understand the behavior of these structures as they may also be affected by a size effect. Two duplicate large-scale beams containing minimum shear reinforcement were tested. The tests were conducted to investigate the effect of size on the shear strength provided by the concrete as well the shear strength provided by the transverse reinforcement. The specimens were subjected to constant shear, and the test results were analyzed. Based on these analyses, conclusions and concerns regarding the shear strength of transversely reinforced sections are presented.
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