聚酯纤维与抗车辙剂对沥青混合料路用性能的影响

Influence of Polyester Fiber and Anti-Rutting Agent on the Road Performance of Asphalt Mixture

为探究聚酯纤维与抗车辙剂复合掺加条件下的沥青混合料性能改良效果,设计室内试验,分析单掺聚酯纤维、单掺抗车辙剂以及复掺聚酯纤维与抗车辙剂等条件下沥青混合料的抗疲劳性能、水稳定性能、低温性能及高温性能。试验结果显示:相较于单掺聚酯纤维、单掺抗车辙剂组沥青混合料,复掺聚酯纤维和抗车辙剂组的沥青混合料具有更强的高温性能、低温性能和抗疲劳性能,但低温性能和抗疲劳性能相较于单掺聚酯纤维组的提升幅度较小,且疲劳寿命对应力比的敏感性较低。复掺组沥青混合料的水稳定性和单掺组的相比没有明显差异。

In order to explore the performance improvement effect of asphalt mixture under the condition of compound addition of polyester fiber and anti-rutting agent,indoor tests were designed to analyze the fa-tigue resistance,water stability,low temperature and high temperature performance of asphalt mixture un-der the conditions of single-doped polyester fiber,single-doped anti-rutting agent and compound-doped polyester fiber and anti-rutting agent.The experimental results show that compared with the asphalt mix-ture of single-doped polyester fiber and single-doped anti-rutting agent group,the asphalt mixture of com-pound-doped polyester fiber and anti-rutting agent group has better high-temperature performance,low-temperature performance and anti fatigue performance,but the low-temperature performance and anti fa-tigue performance are improved less than those of the single-doped polyester fiber group,and the fatigue life is less sensitive to the stress ratio.There is no significant difference in the water stability of the asphalt mixture of the compound-doped group compared with that of the single-doped group.