Limitations of FRP Jacketing in Confining Old-Type Reinforced Concrete Members in Axial Compression
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VIEW CORRECTIONPublication: Journal of Composites for Construction
Volume 10, Issue 1
Abstract
The efficacy of fiber-reinforced polymer (FRP) confinement as a means of repairing/strengthening reinforced concrete members with nonductile details is explored in this paper with particular emphasis on the interaction between jacket and the embedded longitudinal compression reinforcement at the onset of bar buckling. To this end, a total of 27 short prismatic specimens were tested to failure under concentric compression subsequent to application of FRP jackets; four additional specimens were tested as controls. Specimens had a square cross section and most were detailed according to former practices with the exception of few specimens that contained the minimum transverse reinforcement as specified by modern provisions. Parameters of the experimental study were the extent of initial damage prior to jacketing, the jacket material, and the number of layers. Response variables included ductility at failure, deformation capacity, strength increase, and mode of failure of the repaired/strengthened member. Confinement effectiveness was quantified using the degree of lateral dilation as the primary performance index. Deformation capacity as limited by embedded longitudinal bar buckling and jacket rupture/debonding strains was evaluated from the experimental results and analytical considerations.
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Acknowledgments
The experimental program presented in this paper was conducted in the Laboratory of Demokritus Univ. of Thrace. Research was funded through the 1999-PENED program by the Hellenic General Secretarial of Research and Technology. FRP materials were donated by SIKA Hellas.
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Published In
Journal of Composites for Construction
Volume 10 • Issue 1 • February 2006
Pages: 13 - 25
Copyright
© 2006 ASCE.
History
Received: May 24, 2004
Accepted: Jul 12, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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