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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: Creep Rupture of Fiber Reinforced Polymer Prestressing Tendons under Curvature
Author(s): G. S. Kaski and C. W. Dolan
Publication: Special Publication
Appears on pages(s): 23-32
Keywords: buckling; creep; curve; durability; prestress; relaxation; resin; rupture; strain; stress; tendon
Abstract:The long-term durability of FRP prestressing tendons in a harped configuration or in flexure under short radius bends has not been extensively investigated. Creep-rupture data for straight uniaxial tension testing may not be representative of the material behavior in a prestressing application requiring curvature of the tendon. The FRP response in a harped or bent configuration may be compromised due to a lack of ductility in the outer fibers of the tendon. Long-term creep-rupture experiments conducted on harped Carbon FRP tendons are reported. The tests are conducted in a bend test so outer fibers are stressed up to 88 percent of the uniaxial strength. All tests are conducted in air at nominal room temperature. This paper presents design information concerning the long-term performance of harped FRP tendons and coiled storage of FRP tendons.
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