Fiber-Reinforced Polymer Retrofitting of Predamaged Substandard RC Prismatic Members
Publication: Journal of Composites for Construction
Volume 13, Issue 6
Abstract
An experimental study was conducted to investigate the efficiency of FRP jackets in upgrading the seismic behavior of lightly reinforced concrete prismatic members previously damaged under a combination of axial compression and a reversed cyclic lateral displacement history simulating earthquake effects. The test program comprises 13 cantilever prismatic specimens, which, owing to substandard reinforcing details representative of older construction practices in southern Europe, were susceptible to various undesirable modes of damage such as web-shear cracking, longitudinal bar buckling, or lap-splice failure. After repair, the specimens were retested using the same load combination. The efficiency of the repair options considered in the study, which refer to alternative strengthening systems (with glass or carbon wraps), was investigated with reference to the design parameters of the intervention, the type of the applied lateral displacement history, and the mode of failure that had occurred previously in the initial phase of the tests. The results provided valuable insight regarding participation of the FRP jackets in the various mechanisms of resistance, their ability to reverse the effect of initial damage, and to impart deformation capacity to the structural member.
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Acknowledgments
This research was sponsored by the Hellenic Secretariat of Research and Technology (GSRT) through the project consortium “ARISTION.” Tests were conducted in the Laboratory of Reinforced Concrete at Demokritus University of Thrace (DUTh). Data from the first phase of the experimental program (prior to retrofit) used here for comparative evaluation of the retrofit schemes were kindly provided by Dr. D.V. Syntzirma.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 13 • Issue 6 • December 2009
Pages: 535 - 546
Copyright
© 2009 ASCE.
History
Received: Oct 27, 2008
Accepted: Jul 8, 2009
Published online: Jul 13, 2009
Published in print: Dec 2009
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