Shear Resistance of High Strength Concrete Beams Without Shear Reinforcement

The use of high strength concrete in major constructions has become obligatory, whose mechanical properties are still at a research phase. This paper deals with the review of available data base and shear models to predict the shear strength of reinforced concrete beams without web reinforcement. An attempt has been made to study shear strength of high strength concrete beams (70 Mpa) with different shear span to depth ratios (a/d = 1, 2, 3 & 4) without web reinforcement and compare the test results with the available shear models. Five shear models for comparison are considered namely, ACI 318, Canadian Standard, CEPFIP Model, Zsutty Equation and Bazant Equation. The results revealed that the most excellent fit for the test data is provided by Zsutty';s Equationand a simplified equation is proposed to predict the shear capacity high strength concrete beams without shear reinforcement.