Shear behaviour of self-compacting concrete beams without shear reinforcement
An experimental investigation was conducted to study the shear strength and cracking behavior of beams made with self-consolidating concrete(SCC)as well as normal concrete(NC).A total of 12 flexurally reinforced concrete beams which consist of 8 beams with self-compacting concrete and 4 beams with normal concrete,with no shear reinforcement,were tested under mid-span concentrated load until shear failure occurred.The main variables in the test are concrete strength and shear span ratio.While, based on the test data in this study,several shear strength models:GB 50010-2010,Zsutty'formula,ACI 318-11 were analyzed and compared.The shear experimental test data of 130 self-consolidating concrete and 798 normal concrete simply-supported rectangular cross-section beams without web reinforcement were collected to compare the shear capacity between SCC and NC beams.The results show that:In terms of crack morphology,crack progression,the behavior of the SCC and CC beams is virtually identical,and the inclined section of SCC beams are more smooth;The calculated results of Zsutty'fit are closest to the experimental results;the results of GB 50010-2010 are also in good agreement,but are not safe;the deviation of ACI 318-1 1 is larger;and the ultimate shear strength of SCC beams is found to be slightly lower than the NC beams.
beam without web reinforcementself-compacting concreteshear capacitythe code formula