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Title |
Realistic Prediction of Post-Cracking Behaviour in Synthetic Fiber Reinforced Concrete Beams
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Keywords |
섬유보강콘크리트; 합성섬유; 후균열거동; 인발실험; 섬유; 균열폭; fiber reinforced concrete; synthetic fiber; post cracking behavior; pullout test; fiber; crack width |
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Abstract |
Fibers play a role to increase the tensile strength and cracking resistance of concrete structures. The post cracking behavior must be clarified to predict cracking resistance of fiber reinforced concrete. The purpose of this study is to develop a realistic analysis method for the post cracking behavior of synthetic fiber reinforced concrete members. For this purpose, the cracked section is assumed to behave as a rigid body and the pullout behavior of single fiber is employed. A probabilistic approach is used to calculate effective number of fibers across crack faces. The existing theory is compared with test data and shows good agreement. The proposed theory can be efficiently used to describe the load-deflection behavior, moment-curvature relation, load-crack width relation of synthetic fiber reinforced concrete beams.
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