抗车辙剂/纤维复合改性沥青混合料的路用性能

Pavement Performance of Composite Modified Asphalt Mixture with Anti-rutting Agent and Basalt Fiber

为研究抗车辙剂与玄武岩纤维这2种外加剂对沥青混合料路用性能的影响,通过室内试验分析了抗车辙剂/玄武岩纤维复合改性沥青混合料的路用性能,并与基质沥青、单掺抗车辙剂、单掺玄武岩纤维的沥青混合料路用性能进行了对比分析。试验结果表明:单掺抗车辙剂能显著提升基质沥青的高温性能,单掺玄武岩纤维能显著提升基质沥青的低温性能,而抗车辙剂/玄武岩纤维复合改性沥青混合料的高温稳定性、低温抗裂性、水稳定性和抗疲劳性能均较2种外加剂单掺时有所提升。因此,抗车辙剂和玄武岩纤维复合改性能明显提升沥青混合料的路用性能,在实际工程中可加以应用。

In order to study the influence of two additives of anti-rutting agent and basalt fiber on the pavement performance of asphalt mixture,the pavement performance of composite modified asphalt mixture with anti-rutting agent and basalt fiber is analyzed through the laboratory tests.And the pavement performances of asphalt mixture with matrix asphalt,single anti-rutting agent and single basalt fiber are compared and analyzed.The test results show that the high temperature property of matrix asphalt can be significantly improved by singly adding anti-rutting agent,and he low temperature property of matrix asphalt can be significantly improved by singly adding basalt fiber.The high temperature stability,low temperature anti-cracking performance,water stability and anti-fatigue performance of composite modified asphalt mixture with anti-rutting agent and basalt fiber are more improved than the single adding of two additives.Therefore,the composite modification of anti-rutting agent and basalt fiber can obviously improve the pavement performance of asphalt mixture and can be applied in practical engineering.