Experimental Study on the Influence of Vibration Mixing Technology on Engineering Characteristics of Steel Fiber Reinforced Concrete

In order to improve the problems of uneven dispersion, easy agglomeration and insufficient mechanical properties of steel fiber reinforced concrete, vibration mixing and conventional mixing were used to prepare two kinds of test samples. The effects of vibration mixing and conventional mixing on the compressive strength, splitting tensile strength and flexural strength of steel fiber reinforced concrete were compared and analyzed. The results show that, compared with the conventional mixing, vibration mixing compression test can better maintain the integrity of the specimen, only a small number of cracks and small gap, no integral extension cracks appear. Compared with conventional mixing, the average compressive strength of steel fiber concrete for 3d, 7d and 28d under vibration mixing increased by 12.9%, and the splitting strength increased by 12.3%, and the flexural strength increased by 16.8%, and the mechanical properties were strengthened. It provides a reference for the effective application of vibration mixing steel fiber concrete in engineering structure.