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用钢纤维增强水泥基体已成为改善脆性基体的韧性和提高抗拉强度的有效方法。但用钢纤维增强水泥时,纤维对拌合物的和易性有不利影响,为了制得能适于浇注的拌合物,对于纤维的掺量和长度-直径比有一定的限制,分别小于1.5%和70,具体值视骨料的最大粒径而定。因为掺量和长度-直径比这两个参数也控制硬化复合材料中纤维的增强效果,所以
The use of steel fiber reinforced cement matrices has become an effective way to improve the toughness of the brittle matrix and increase the tensile strength. However, when steel fibers are used to reinforce the cement, the fibers have an adverse effect on the workability of the mixture. In order to obtain a mixture suitable for casting, there is a certain limit on the fiber content and the length-to-diameter ratio. 1.5% and 70, depending on the maximum particle size of the aggregate. Because the two parameters of content and length-to-diameter ratio also control the reinforcing effect of the fibers in the hardened composite,