Experimental Response of Externally Retrofitted Masonry Walls Subjected to Shear Loading
Publication: Journal of Composites for Construction
Volume 12, Issue 5
Abstract
Recent earthquakes have produced extensive damage in a large number of existing masonry buildings, demonstrating the need for retrofitting masonry structures. Externally bonded carbon fiber is a retrofitting technique that has been used to increase the strength of reinforced concrete elements. Sixteen full-scale shear dominant clay brick masonry walls, six with wire-steel shear reinforcement, were retrofitted with two configurations of externally bonded carbon fiber strips and subjected to shear loading. The results of the experimental program showed that the strength of the walls could be increased 13–84%, whereas, their displacement capacity increased 51–146%. This paper presents an analysis of the experimental results and simple equations to estimate the cracking load and the maximum shear strength of clay brick masonry walls, retrofitted with carbon fiber.
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Acknowledgments
The research reported in this paper was conducted at the Structural Engineering Laboratory of the Pontificia University Catolica de Chile, and was sponsored by the Chilean National Fund for Science and Technology through FONDECYT, under Grant No UNSPECIFIED1030403. The carbon fiber materials used were donated by SIKA Chile. The writers are grateful for this support and also wish to thank Professor Carl Lüders for his advice.
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© 2008 ASCE.
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Received: Jan 22, 2007
Accepted: Nov 28, 2007
Published online: Oct 1, 2008
Published in print: Oct 2008
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