Experimental Evaluation of Slender High-Strength Concrete Columns with GFRP and Hybrid Reinforcement
Publication: Journal of Composites for Construction
Volume 20, Issue 6
Abstract
The behavior of slender high-strength concrete columns reinforced with glass fiber-reinforced polymer (GFRP) bars and spirals subjected to concentric and eccentric axial loads was evaluated. Large-scale tests were conducted for nine circular concrete columns (three short and six slender) reinforced with internal GFRP-spirals and either steel, GFRP, or a combination of steel and GFRP longitudinal bars. The short and slender columns had slenderness ratios equal to 10 and 49, respectively. Axial load tests were conducted with loads placed concentrically (short columns) and at two eccentricities (slender columns) to observe the general behavior associated with different geometric and loading conditions. The behavior of slender columns with small eccentricity (8.3% of the column size) was governed by material failure, while that of slender columns with large eccentricity (33% of column size) was governed by a buckling failure. The research shows that GFRP spirals and GFRP longitudinal bars are a viable method of reinforcement for slender concrete columns subjected to eccentric axial loads.
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Acknowledgments
The authors would like to acknowledge Hughes Bros Inc. and Hanson Structural Precast for their contribution of materials for the project. The authors also acknowledge the assistance of Mark Bryant, Mike Gibbons, and Dr. Ruifen Liu for their help with the experiments. The authors would like to acknowledge the constructive comments of the reviewers.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 20 • Issue 6 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 30, 2015
Accepted: Mar 2, 2016
Published online: May 5, 2016
Discussion open until: Oct 5, 2016
Published in print: Dec 1, 2016
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