Stress-Strain Model for Fiber-Reinforced Polymer-Confined Concrete
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VIEW THE ORIGINAL ARTICLEPublication: Journal of Composites for Construction
Volume 6, Issue 4
Abstract
The design of fiber-reinforced polymer (FRP)-confined concrete members requires accurate evaluation of the performance enhancement due to the confinement provided by FRP composite jackets. A strain ductility-based model is developed for predicting the compressive behavior of normal strength concrete confined with FRP composite jackets. The model is applicable to both bonded and nonbonded FRP-confined concrete and can be separated into two components: a strain-softening component, which accounts for unrestrained internal crack propagation in the concrete core, and a strain-hardening component, which accounts for strength increase due to confinement provided by the FRP composite jacket. A variable strain ductility ratio described in a companion paper is used to develop the proposed stress-strain model. Equilibrium and strain compatibility are used to obtain the ultimate compressive strength and strain of FRP-confined concrete as a function of the confining stiffness and ultimate strain of the FRP jacket.
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Information
Published In
Journal of Composites for Construction
Volume 6 • Issue 4 • November 2002
Pages: 233 - 240
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: May 29, 2001
Accepted: Dec 3, 2001
Published online: Oct 15, 2002
Published in print: Nov 2002
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