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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: Freeze-Thaw Behavior of FRP-Confined Concrete under Sustained Load
Author(s): A. Kong, A. Fam, and M.F. Green
Publication: Special Publication
Appears on pages(s): 705-722
Keywords: concrete; confinement; creep; durability; fiber reinforcedpolymer (FRP); freeze-thaw; sustained load; wraps
Abstract:Fiber-reinforced polymers (FRPs) are effective in strengthening concretestructures. However, little work has examined the effects of cold regions on thebehavior of the strengthened members, particularly the combined effects of sustainedloading and freeze-thaw exposure. This paper presents the results of an experimentalstudy on the durability of 70 normal weight, low strength, and non-air entrainedconcrete cylinders (150 x 300mm). The cylinders were confined with glass-FRP (GFRP)sheets or carbon-FRP (CFRP) sheets and exposed to 300 freeze-thaw cycles while undersustained axial compression loads. FRP-wrapped cylinders showed exceptionaldurability performance after their extreme exposure to freeze-thaw and sustainedloading with a maximum of 12% reduction in strength. Some CFRP wrapped cylindersthat were exposed to freeze-thaw without longitudinal restraint, by means of sustainedloads, and all the plain concrete cylinders were completely disintegrated with virtuallyzero residual strength.
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