Experimental Investigation of Nonconventional Confinement for Concrete Using FRP
Publication: Journal of Composites for Construction
Volume 9, Issue 6
Abstract
The present study investigates experimentally the behavior of concrete confined with fiber reinforced polymers (FRP) in the form of jackets which are applied according to a number of nonconventional techniques. First, the effectiveness of various jacketing configurations combined with anchors as a measure of increasing the strength and deformability of L-shaped columns is investigated. It is concluded that easy to install and low-cost anchors made of resin impregnated fibers properly placed at the reentrant corner of L-shaped columns enable excellent mobilization of confining stresses supplied by the FRP jackets. Next, a number of alternative confinement methods are investigated on concrete cylinders, aimed at quantifying the effectiveness of (1) unbonded jacketing, (2) spirally applied strips attached only at their ends, and (3) jacketing directly on concrete with mortar plastering. Although the study may be regarded as preliminary, it provides useful experimental support to a number of techniques which have the potential to open new horizons in the field of externally applied FRP for enhancing concrete confinement.
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Acknowledgments
The writers wish to thank Mrs. A. Grammenou, Mrs. M. Ntionia, and Mrs. E. Simintzi for their assistance in the experimental program. GFRP materials and anchors were provided free of charge by Fyfe Europe S.A.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 9 • Issue 6 • December 2005
Pages: 480 - 487
Copyright
© 2005 ASCE.
History
Received: Jan 11, 2005
Accepted: Apr 21, 2005
Published online: Dec 1, 2005
Published in print: Dec 2005
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