Flexural Strengthening of RC Beams with an Externally Bonded Fabric-Reinforced Cementitious Matrix
Publication: Journal of Composites for Construction
Volume 18, Issue 5
Abstract
Concrete structures deteriorate for various reasons and upgrading is needed to ensure their continued safe working conditions. Retrofitting reinforced concrete (RC) beams have been accomplished using various techniques, namely, steel plates, external posttensioning, externally bonded fiber-reinforced polymer (FRP), and near-surface-mounted FRP systems to increase flexural and shear capacity. The objective of this paper is to investigate the feasibility of fabric-reinforced cementitious-matrix (FRCM) materials as an alternative external strengthening technique for RC members. The FRCM is a composite material consisting of one or more layers of cement-based matrix reinforced with dry-fiber fabric. The experimental program consists of testing 18 RC beams strengthened in flexure with two different FRCM schemes (one and four reinforcement fabrics). An analysis and design are conducted following the well-established formulation to calculate the flexural capacity of the beams and compare their results with the experimental database.
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Acknowledgments
The authors gratefully acknowledge the National Science Foundation (NSF) for the support provided to the Industry/University Center for Integration of Composites into Infrastructure (CICI) at the University of Miami under grant IIP-0933537 and its industrial member Ruredil S.p.A., San Donato Milanese, Italy.
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Information & Authors
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Published In
Journal of Composites for Construction
Volume 18 • Issue 5 • October 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Nov 11, 2013
Accepted: Jan 27, 2014
Published online: Feb 21, 2014
Discussion open until: Jul 21, 2014
Published in print: Oct 1, 2014
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