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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 Strengthening Effects with Varying Types of FRP Materials and Strengthening Methods
Author(s): J. Sim, G. Kim, C. Park, and M. Ju
Publication: Special Publication
Appears on pages(s): 1665-1680
Keywords: CFRP; CFS; GFS; shear; strengthening
Abstract:The FRP system is a good alternative of the traditional shear strengtheningtechnique. This study evaluates the shear strengthening effects on the reinforcedconcrete beams strengthened with varying types of FRP materials, CFRP, CFS and GFRP.The entire strengthened specimens were failed in the mode of brittle shear failure withdebonding of the FRP materials. The shear capacities were improved mostly by morethan 54%. The different types of the strengthening materials did not yield a noticeabledifference in the shear strengthening effect. The orientation of the fibers, however,was found to be an important factor. With a 45° fiber orientation, greater strengtheningeffect and better control on the shear crack propagation were observed. A numericalmodel predicting the shear capacity of the shear-strengthened beams was suggestedalong with the strength efficiency factor from the test results. The predictions were ingood agreement with the test results.
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