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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: Comparison of Confinement Models for Fiber-Reinforced Polymer-Wrapped Concrete
Author(s): Luke A. Bisby, Aaron J. S. Dent, and Mark F. Green
Publication: Structural Journal
Appears on pages(s): 62-72
Keywords: columns; fibers; polymer; reinforcement; repair
Abstract:Fiber-reinforced polymer (FRP) wrapping of reinforced concrete columns is rapidly gaining acceptance as an effective rehabilitation and strengthening technique. Over the past 20 years, numerous analytical models have been presented in literature to predict the stress-strain behaviour of concrete confined by FRP wraps. These models have generally been derived empirically from relatively small samples of experimental data, and there appears to be little consensus among researchers as to which confinement model(s) consistently yield the most accurate results. In this paper, various available analytical models are evaluated in light of a large database of test results on FRP wrapped columns. In addition, several of the existing models are modified herein to provide the best fit to the experimental database. Because of the variability observed in the test data, however, it appears impossible to develop simple empirical models based on the current database with less than approximately 14% mean absolute error for ultimate strength, and 35% mean absolute error for ultimate strain. Existing design guidelines are presented and discussed in light of the experimental database.
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