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通过室内试验研究了不同掺量硅藻土改性沥青的性能指标,并通过重复加载蠕变试验、疲劳试验、低温压缩试验对不同掺量的硅藻土改性沥青混合料的路用性能进行了比较分析,并采用动态模量试验研究硅改沥青混合料的高温力学性能。结果表明,添加适量的硅藻土可以有效提高沥青混合料的高温性能、低温抗裂性及疲劳性能,同时动态模量也得到了一定程度提高。综合试验结果提出了硅藻土掺量的建议值。
The performance indexes of diatomite modified asphalt with different dosages were studied through laboratory experiments. The road performance of diatomite modified asphalt mixtures with different dosages was compared by repeated loading creep test, fatigue test and low temperature compression test Analysis and dynamic modulus test silicon modified asphalt mixture at high temperature mechanical properties. The results show that adding appropriate amount of diatomite can effectively improve the high temperature performance, low temperature crack resistance and fatigue properties of asphalt mixture, and the dynamic modulus has also been improved to a certain extent. The comprehensive test results suggest the recommended value of diatomite content.