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路基同时受到环境与荷载的作用,其稳定性关系着道路的安全性和耐久性。为提高软土地基的稳定性,开展了对软土地基粉土替换为聚酯纤维增强的水泥土的实验研究,试验证明该方法可以有效的提高软土路基的稳定性。将含量为由0‰到1.7‰的聚酯纤维掺入水泥稳定土混合料,对其干缩试验结果进行分析,并通过Cubic数值拟合得出试件性能随聚酯纤维掺量不同的变化规律为:δ=0.072Fs3-0.181Fs2+0.076Fs+0.017,并由此初步确定了聚酯纤维的最佳掺量为0.770 6‰,为工程实践提供了理论依据。
Subgrade is affected by the environment and load at the same time. Its stability is related to the safety and durability of the road. In order to improve the stability of soft soil foundation, an experimental study was conducted on the replacement of soft soil ground with polyester fiber reinforced cement soil. The experiment shows that this method can effectively improve the stability of soft soil roadbed. The content of fiber from 0 ‰ to 1.7 ‰ polyester fiber incorporated into the stabilized soil mixture, the shrinkage test results were analyzed, and Cubic numerical fitting results obtained with the test piece properties of polyester fiber content of different changes The law is: δ = 0.072Fs3-0.181Fs2 + 0.076Fs + 0.017, and the best content of polyester fiber is 0.770 6 ‰, which provides a theoretical basis for engineering practice.