Repair and Strengthening of Reinforced Concrete Beam-Column Joints with Fiber-Reinforced Polymer Composites
Publication: Journal of Composites for Construction
Volume 16, Issue 5
Abstract
Three exterior reinforced concrete beam-column joint specimens were tested under reverse cyclic loading. The joint region of these specimens suffered significant damage, whereas limited damage was observed in the beams. The damaged specimens were repaired and strengthened to prevent shear damage and strength deterioration inside the joint region and to achieve more ductile response. First, the damaged loose concrete was removed and replaced by high-strength nonshrink mortar. Then, fiber-reinforced polymer (FRP) strips were diagonally wrapped over the joint region, and longitudinal FRP strips were applied and anchored on the beams. The original strength was restored in all strengthened specimens under the application of the same loading history. Deformation capacities of the strengthened specimens were much larger than those of the original specimens.
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Acknowledgments
Undergraduate student Seth Salisbury repaired the specimens. Graduate student Matthew Fisher previously tested the original specimens and helped Seth Salisbury to test the repaired specimens. Their help, donation of FRP materials by the Sika Corporation, and funding provided by The Ohio State University are greatly acknowledged.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 16 • Issue 5 • October 2012
Pages: 499 - 506
Copyright
© 2012 American Society of Civil Engineers.
History
Received: May 26, 2011
Accepted: Mar 2, 2012
Published ahead of production: Mar 8, 2012
Published online: Sep 14, 2012
Published in print: Oct 1, 2012
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