Comparative Study of Models on Confinement of Concrete Cylinders with Fiber-Reinforced Polymer Composites
Publication: Journal of Composites for Construction
Volume 7, Issue 3
Abstract
The use of fiber-reinforced polymer (FRP) composites for strengthening and/or rehabilitation of concrete structures is gaining increasing popularity in the civil engineering community. One of the most attractive applications of FRP materials is their use as confining devices for concrete columns, which may result in remarkable increases of strength and ductility as indicated by numerous published experimental results. Despite a large research effort, a proper analytical tool to predict the behavior of FRP-confined concrete has not yet been established. Most of the available models are empirical in nature and have been calibrated against their own sets of experimental data. On the other hand, the experimental results available in the literature encompass a wide range of values of the significant variables. The objective of this work is a systematic assessment of the performance of the existing models on confinement of concrete columns with FRP materials. The study is conducted in the following steps: the experimental data on confinement of concrete cylinders with FRP available in the technical literature are classified according to the values of the significant variables; the existing empirical and analytical models are reviewed, pointing out their distinct features; the whole set of available experimental results is compared with the whole set of analytical models; and strengths and weaknesses of the various models are analyzed. Finally, a new equation is proposed to evaluate the axial strain at peak stress of FRP-confined concrete cylinders.
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Information
Published In
Journal of Composites for Construction
Volume 7 • Issue 3 • August 2003
Pages: 219 - 237
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Aug 9, 2001
Accepted: Mar 19, 2002
Published online: Jul 15, 2003
Published in print: Aug 2003
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