Influence of Steel Fibers and Headed Bars on the Serviceability of High-Strength Concrete Corbels
Publication: Journal of Structural Engineering
Volume 138, Issue 1
Abstract
Vertical loading tests are reported for six double-sided, high-strength concrete corbel specimens. The primary variables of the investigation were the percentage of steel fibers and the anchorage method of the main tension tie. The test results indicated that performance in terms of load-carrying capacities, stiffness, ductility, and crack width was improved, as the steel fibers were added and the percentage of steel fibers was increased. The corbel specimens with headed bars used as the main tension-tie reinforcement showed superior load-carrying capacities, stiffness, and ductility compared with the corbel specimens in which the main tension ties were anchored by welding to the transverse bars. From the test results, it is expected that the load-carrying capacities, serviceability, and durability of high-strength concrete corbels would be improved by using steel fibers and headed bars. Experimental results presented were also compared with various prediction models.
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Acknowledgments
The work presented in this paper was funded by the Center for Concrete Corea (UNSPECIFIED05-CCT-D11), supported by the Korea Institute of Construction and Transportation Technology Evaluation and Planning (KICTTEP) under the Ministry of Construction and Transportation (MOCT). The friction-welded headed bars were provided by Headed Reinforcement Corp. (HRC). The testing was carried out in the structural laboratories in the Department of Civil Engineering at McGill University.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 138 • Issue 1 • January 2012
Pages: 123 - 129
Copyright
© 2012 American Society of Civil Engineers.
History
Received: May 25, 2009
Accepted: Apr 18, 2011
Published online: Dec 15, 2011
Published in print: Jan 1, 2012
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