Strength of Hollow Concrete Masonry Reinforced with Sprayed Glass-Fiber-Reinforced Polymer
Publication: Journal of Composites for Construction
Volume 18, Issue 6
Abstract
The results of out-of-plane strength tests on unreinforced and reinforced concrete masonry wallettes that were constructed using hollow concrete masonry units are reported in this paper. The reinforcement was external and was accomplished by spraying one side of the wallettes with layers of glass-fiber-reinforced polymer (GFRP). Eight unreinforced and 28 reinforced wallettes were constructed and tested in four-point bending spanning either vertically or horizontally. Twelve additional reinforced wallettes were constructed but tested cantilevered from either the bottom or one of the sides and loaded either along the top or along the nonsupported side. Overall, the results indicate that the strength of unreinforced masonry can be greatly improved by external reinforcement. The behavior of the wallettes is also discussed, with the most worrisome observed behavior being the failure of the webs of the masonry units in the direction parallel to the direction of the applied loads. As part of the research, simplified models to predict the capacity of hollow concrete masonry externally reinforced with sprayed GFRP were also developed and presented in this paper.
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Acknowledgments
The authors are most grateful to the technical staff of the Department of Civil Engineering, University of Calgary for their excellent help and dedication. The blocks were donated by Expocrete Concrete Products and the masonry constructed by George Larocque; all with the support of the Masonry Contractors Association of Alberta, Southern Division. Many thanks for that help. The grant #2006/00917-8, São Paulo Research Foundation (FAPESP) and the support of the Multidisciplinary Center for Development of Ceramic Materials (Brazil) are greatly appreciated. The financial support from the ISIS Network of Centres of Excellence (Canada) and that from the Natural Sciences and Engineering Research Council of Canada are also appreciated.
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Information & Authors
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Published In
Journal of Composites for Construction
Volume 18 • Issue 6 • December 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 10, 2013
Accepted: Jan 31, 2014
Published online: Mar 10, 2014
Discussion open until: Aug 10, 2014
Published in print: Dec 1, 2014
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