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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: Shear Strength of Concrete Beams Reinforced with FRP Bars: Design Method
Author(s): A.K. El-Sayed, E.F. El-Salakawy, and B. Benmokrane
Publication: Special Publication
Appears on pages(s): 955-974
Keywords: axial stiffness; beams; concrete contribution; design method; FRP bars; shear strength
Abstract:ACI Committee 440 has proposed a design approach for evaluating theconcrete contribution to the shear resistance of FRP-reinforced concrete beams thataccounts for the axial stiffness of FRP longitudinal reinforcement. Recent shear testsconducted on beams longitudinally reinforced with different types and ratios of FRPbars indicate that the current ACI 440.1R-03 shear design approach significantlyunderestimates the concrete shear strength of such beams. This paper presents aproposed modification to the ACI 440.1R-03 shear design equation. The proposedequation was verified against experimental shear strengths of 98 specimens tested todate, and the calculated values are shown to compare well. In addition, the proposedequation was compared to the major design provisions using the available test results.Better and consistent predictions were obtained using the proposed equation.
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