Rehabilitation of Masonry Walls Using Unobtrusive FRP Techniques for Enhanced Out-of-Plane Seismic Resistance
Publication: Journal of Composites for Construction
Volume 10, Issue 3
Abstract
Earthquake damage to unreinforced masonry buildings has shown the vulnerability of perimeter walls to out-of-plane failure. This paper describes a study that was carried out to develop and test innovative fiber reinforced polymer (FRP) rehabilitation techniques that meet the stringent requirements for strengthening historical buildings and to be cost-effective alternatives applicable to other existing masonry structures. Unobtrusive FRP rehabilitation techniques that utilize flexible carbon fiber composite cables, mounted near the surface of the façade walls in epoxy-filled grooves in the bed and head joints, were developed. Ten full size walls were constructed of clay bricks and retrofitted using the developed FRP rehabilitation techniques. The test results demonstrated the high efficiency of the rehabilitation techniques under both monotonic and quasistatic cyclic loadings. Significant increases in ultimate capacities, energy absorption, and deformability were achieved for various reinforcing schemes compared to the behavior of the unreinforced walls.
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Acknowledgments
The first writer gratefully acknowledges the financial support received from the Materials and Manufacturing Ontario (MMO) Centre of Excellence, the Centre for Effective Design of Structures funded through Ontario Research and Development Challenge Fund and McMaster University. A significant part of the materials needed for this research was an in-kind contribution from Sika Canada Construction Chemicals, Hanson Brick North America (formerly Canada Brick), and Ontario Masonry Contractors Association (OMCA). The writers are grateful for these generous contributions. This research was carried out as part of the mandate of the Centre for Effective Design of Structures at McMaster University.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 10 • Issue 3 • June 2006
Pages: 213 - 222
Copyright
© 2006 ASCE.
History
Received: May 19, 2005
Accepted: Aug 11, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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