Strengthening of Reinforced-Concrete Beams in Shear with a Fabric-Reinforced Cementitious Matrix
Publication: Journal of Composites for Construction
Volume 21, Issue 5
Abstract
The development and advancement of cement-based composites has shown promise in recent years. It is important to examine new materials and technologies so that they can satisfy the ever-changing repair and strengthening application needs in the structural engineering field. This paper presents an experimental study on the behavior of reinforced concrete beams strengthened in shear using an externally applied fiber-reinforced cementitious matrix (FRCM). The first aim of this study is to investigate the effectiveness and the performance of the polyparaphenylene benzobisoxazole fiber-reinforced cementitious mortar (PBO-FRCM) system for shear strengthening. The second aim is to study the shear performance of the PBO-FRCM system in terms of the availability and absence of internal transverse shear reinforcements. A comparison study with previous experimental work and the relevant code is done to evaluate the shear performance of the PBO-FRCM system. The test results include the observed shear contribution of the PBO-FRCM system, the failure mode of the strengthened beams, and the influence of the internal transverse shear reinforcements on the shear performance of the PBO-FRCM system.
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Acknowledgments
The authors gratefully acknowledge the financial support provided by the Ruredil Company in Milan, Italy, and the ReCAST Tier 1 University Transportation Center at Missouri University of Science and Technology as well as the support from the Center for Infrastructure Engineering Studies (CIES) and the Department of Civil, Architectural and Environmental Engineering at Missouri University of Science and Technology in Rolla, Missouri.
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Information & Authors
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Published In
Journal of Composites for Construction
Volume 21 • Issue 5 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Aug 29, 2016
Accepted: Mar 9, 2017
Published online: Jun 9, 2017
Published in print: Oct 1, 2017
Discussion open until: Nov 9, 2017
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