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通过对5组钢纤维自密实混凝土的抗弯性能试验,对其抗弯性能进行分析,采用新方法统计和分析钢纤维自密实混凝土试件断面纤维的分布规律,对比钢纤维自密实混凝土力学性能与纤维分布的关系。研究结果表明:钢纤维掺量越大或纤维长度越长,抗弯性能和弯曲韧性越好;纤维掺量越多,在混凝土中纤维根数越多,断面处纤维分布越均匀;钢纤维掺量、钢纤维在试件断面处分布的均匀程度、根数及钢纤维外露长度与角度的不同,影响钢纤维自密实混凝土试件的抗弯强度与弯曲韧性。
The flexural properties of five groups of steel fiber self-compacting concrete were analyzed. The new method was used to analyze and analyze the distribution regularity of fiber in the section of steel fiber self-compacting concrete. Comparing the mechanical properties of steel fiber self-compacting concrete Relationship with fiber distribution. The results show that the higher the steel fiber content or the longer the fiber length, the better the bending resistance and flexural toughness. The more the fiber content, the more the fiber number in the concrete, the more uniform the fiber distribution in the cross section. The distribution of steel fiber at the cross section of the specimen is uniform, the number of root and the difference between the exposed length and angle of the steel fiber affect the flexural strength and flexural toughness of the steel fiber self-compacting concrete specimens.