高模量沥青混合料的路用性能评价

为全面分析高模量沥青混合料的路用性能，选取2种高模量添加剂分别形成高模量沥青混合料与普通沥青混合料进行路用性能的对比试验研究，包括水稳定性、高温稳定性、低温抗裂性及疲劳性能，试验分别为浸水马歌尔试验、车辙试验、弯曲试验及疲劳试验，通过残留稳定度、动稳定度、弯曲应变及疲劳寿命指标来评价及对比3种沥青混合料的路用性能。此外，还测试了3种混合料的动态模量，分析它们变化情况。研究表明：2种高模量沥青混合料比普通沥青混合料有更高的动态模量值、更优越的水稳定性、高温性能及疲劳性能；至于低温性能，则取决于外掺剂的类型。

The Performance Evaluation of High Modulus Asphalt Mixtures

To fully analyze the performance of high modulus asphalt mixtures,two high modulus asphalt mixtures were studied comparing with traditional asphalt mixture through Immersion Marshall, wheel tracking, bending and fatigue tests in this paper. The performance of three mixtures were evaluated by the indexes of residual stability, dynamic stability, bending strain and fatigue life. In addition, their dynamic modulus were experimented. Comprehensive study showed that two kinds of high modulus asphalt mixture had higher dynamic modulus value and better water stability, high temperature and fatigue performance than traditional mixture ;As for the low temperature performance,it depended on the type of the additive.