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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 Hoop-Confined High-Strength Concrete Under Axial and Shear Loads
Author(s): Hisham AbdelL-Fattah and Shuaib H. Ahmad
Publication: Structural Journal
Appears on pages(s): 652-659
Keywords: axial loads; compression; confined concrete; shear stress; high-strength concrete; hoops; stress-strain relationships; Structural Research
Abstract:Thirty-two 3 x 9 in. (76 x 152.4 mm) cylindrical specimens made with high-strength concrete f'c > 6000 psi) were tested under uniaxial compression and combined compression-shear to determine strength and deformation behavior. Eleven specimens were laterally reinforced with thin circular hoops of steel; the rest were plain concrete specimens that were used as controls. Complete stress-strain curves for plain and hoop-confined high-strength concrete under axial compressive stress and combined axial compressive and shear stresses were obtained. The effect of shear stress was to reduce slightly the strength enhancement due to confinement and also to reduce the strain at the maximum strength. The shear stress also reduced the postpeak ductility enhancement due to confinement.
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