Numerical Investigation of Creep Effects on FRP-Strengthened RC Beams
Publication: Journal of Composites for Construction
Volume 14, Issue 6
Abstract
Numerical analysis using a finite-element model was performed to simulate and investigate the long-term behavior of two RC beams with similar steel reinforcement, cast from the same batch of concrete. One beam was a plain RC beam and the other beam was strengthened using carbon fiber-reinforced polymer (FRP) strips. The deflections of both beams have been monitored for 5 years after loading. The finite-element model included both creep of concrete and viscoelasticity of the epoxy adhesive at the concrete-carbon FRP (CFRP) interface. The results of the finite-element analysis are compared to experimental observations of the two beams. The finite-element analysis was found to be able to simulate the long-term behavior of the CFRP-strengthened beam and help us understand the complex changes in the stress state that occur over time.
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Acknowledgments
This research has been carried out with the financial assistance of the Natural Sciences and Engineering Research Council (NSERC) and the ISIS Network of Centres of Excellence, Canada. The writers are grateful to these entities for their support. The help of the technical staff of the Department of Civil Engineering, University of Calgary is gratefully acknowledged. Funding to the first two writers by New Mexico Department of Transportation (NMDOT) is also greatly appreciated.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 14 • Issue 6 • December 2010
Pages: 812 - 822
Copyright
© 2010 ASCE.
History
Received: Oct 2, 2008
Accepted: Mar 16, 2010
Published online: Mar 18, 2010
Published in print: Dec 2010
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