SHEAR BEHAVIOUR OF HIGH STRENGTH FIBER REINFORCED CONCRETE CORBELS

Document Type : Research Paper

Authors

1 Associate professor, Civil Engineering Department, Assiut University

2 Lecturer, Civil Engineering Department, Assiut University

3 Demonstrator, Civil Engineering Department, Sohag University

Abstract

An experimental study of shear behaviour of high strength reinforced-concrete corbels with and without fibers was investigated. Seventeen high strength reinforced-concrete corbels were tested. The test variables were steel fiber content (Vf%), shear span-to-depth ratio (a/d), concrete strength (fcu), area of main steel reinforcement (Asm) and presence of horizontal stirrups. Test results showed that, addition of steel fibers or/and horizontal stirrups improves both shear strength and ductility of the tested corbels, and results in a more ductile failure mode. Test results were compared with shear strength predicted using ACI 38-08 equations and those proposed by other investigators. Comparison between the experimental and the predicted values of shear strengths showed that the model proposed by G. Campione et.al. [1], satisfactory predicted the ultimate load for high strength fiber reinforced-concrete corbels.

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JES. Journal of Engineering Sciences
Volume 40, No 4
July and August 2012
Pages 969-987

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