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根据大量试验结果,分析了试件养护龄期、聚丙烯纤维体积掺量以及水泥掺量的变化对聚丙烯纤维水泥稳定碎石劈裂抗拉强度的影响,并得出了相应的影响规律。结果表明:聚丙烯纤维的掺加对水泥稳定碎石抗压强度和抗拉强度有一定的增加;随着试验龄期的增长,抗拉强度不断增长;在本文聚丙烯纤维掺量的范围内(体积掺量小于1‰),随着纤维体积掺量的增加,水泥稳定碎石抗压强度和抗拉强度有逐渐增加的趋势;随着水泥掺量的增加,聚丙烯纤维水泥稳定碎石抗拉强度基本呈线性增加。
According to a large number of test results, the influence of the curing age of the specimen, the volume content of polypropylene fiber and the cement content on the splitting tensile strength of polypropylene fiber cement stabilized macadam was analyzed, and the corresponding influence laws were obtained. The results show that the polypropylene fiber has a certain increase in the compressive strength and tensile strength of cement-stabilized macadam. With the increase of test age, the tensile strength increases continuously. Within the range of the polypropylene fiber content (Volume content less than 1 ‰). With the increase of fiber volume fraction, the compressive strength and tensile strength of cement-stabilized macadam tended to increase gradually. With the increase of cement content, polypropylene fiber cement stabilized macadam Tensile strength basically linear increase.