Experimental Study and Finite Element Simulation on Flexural Toughness of Steel Fiber Reinforced Concrete
To study the flexural toughness of steel fiber reinforced concrete,different volume proportions of milled steel fibers are used to prepare steel fiber reinforced concrete.The effects of proportion on the load-deflection curve,flexural toughness index,and flexural toughness ratio of steel fiber reinforced concrete beam specimens are studied by experiments.Subsequently,the load-deflection curve and crack propagation process under the same conditions as the experiments are simulated and analyzed by using the finite ele-ment software ABAQUS.The results show that the steel fiber reinforced concrete with a large volume pro-portion has better toughening and crack resistance effect in the later stage of loading.The flexural tough-ness is best when the volume proportion of steel fiber is 1.5%.At the same time,the failure process and characteristics of steel fiber reinforced concrete are analyzed by combining the load-deflection curve and stress cloud map,providing references for the application of steel fiber reinforced concrete in engineering.
steel fiber reinforced concreteflexural toughness indexbending toughness ratio
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