Research on Steel Fiber Reinforced Concrete Mix Proportion Based on the Theory of the Orthogonal Experiment

摘要

According to the needs of the quick mending engineering in concrete pavement, the theory of orthogonal experiment and the major indicators that influence the performance of steel fiber reinforced concrete, the influence of the various factors’ change on physical and mechanical properties of the mixed steel fiber reinforced concrete is studied, with water-cement ratio, accelerator, steel fiber content, coarse aggregate gradation as the essential factor. The research shows that flexural strength of steel fiber reinforced concrete increases with the increase of the steel fiber content and decreases with the increase of the water-cement ratio. In addition, the level of grade aggregate also has an important influence on the flexural strength of steel fiber reinforced concrete. The study figures out the optimum mix proportion of steel fiber reinforced concrete and provide a good reference to engineering application.