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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: Exploratory Shear Tests Emphasizing
Percentage of Longitudinal Steel
Author(s): K. S. Rajagopalan and Phil M. Ferguson
Publication: Journal Proceedings
Appears on pages(s): 634-638
Keywords: beams (structural);cracking (fracturing);diagonal tension;flexural strength; reinforced concrete;reinforcing steel;research;shear strength;stirrups;web reinforcement.
Abstract:The shear strength of reinforced concrete beams as given by ACI 318-63 is known to be unconservative when the ratio of the longitudinal reinforcement, p, is small. The aim of the present investigation was to assess the extent of this inadequacy. Ten rectangular beams without web reinforcement and having p between 0.0173 and 0.0025 were tested; results of 27 other beams with p less than 0.012 from various other investigators were also analyzed. All the beams considered had a/d ratios greater than 2.75. Three rectangular beams with web reinforcement are also reported.
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