Concrete Contribution to the Shear Resistance of Fiber Reinforced Polymer Reinforced Concrete Members |
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Authors: | A Ghani Razaqpur Burkan O Isgor S Greenaway Alistair Selley |
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Affiliation: | 1Dept. of Civil and Environmental Engineering, Carleton Univ.,Ottawa ON, Canada K1S 5B6. E-mail: ghani_razaqpur@carleton.ca 2Dept. of Civil and Environmental Engineering, Carleton Univ.,Ottawa ON, Canada K1S 5B6. E-mail: burkan_isgor@carleton.ca 3Dept. of Civil and Environmental Engineering, Carleton Univ.,Ottawa ON, Canada K1S 5B6.
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Abstract: | Seven beams were tested in bending to determine the concrete contribution to their shear resistance. The beams had similar dimensions and concrete strength and were reinforced with carbon fiber reinforced polymer bars for flexure without transverse reinforcement. They were designed to fail in shear rather than flexure. The test variables were the shear span to depth ratio, varying from 1.82 to 4.5, and the flexural reinforcement ratio, varying from 1.1 to 3.88 times the balanced strain ratio. The test results are analyzed and compared with the corresponding predicted values using the American Concrete Institute, the Canadian Standard, and the Japan Society of Civil Engineers (JSCF) fiber reinforced polymer design recommendations. Based on these results and previous experimental data, it is shown that the ACI recommendations are extremely conservative whereas the Canadian and JSCE recommendations, albeit still conservative, are in closer agreement with the experimental data. Overall the Canadian Standard’s predictions are in better agreement with experimental data than the JSCE predictions. |
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Keywords: | Beams Shear strength Shear resistance Concrete reinforced Fiber reinforced polymers Fiber reinforced plastics Reinforcement |
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