两种沥青混凝土路面磨耗层抗滑性能比较分析

Comparative Analysis of the Pavement Skid Resistance Performance of Two Types Anti-skid Asphalt Surface

为了研究沥青混凝土路面磨耗层抗滑性能随时间的衰变规律,对某高速公路AC-16磨耗层(抗滑表层)和SMA-13磨耗层交工和竣工验收时的横向摩擦力系数和构造深度进行检测,并进行比较分析,结果表明,SMA磨耗层横向摩擦力系数的衰减规律与AC磨耗层不一致,其横向摩擦力并不是在交工验收时达到最优,通车初期出现"不降反升"的现象,不过SMA磨耗层的横向摩擦力系数要比AC磨耗层的衰减得慢,呈现出更优秀的抗滑性能。两种磨耗层的构造深度随行车荷载的增加均显著下降,SMA磨耗层的构造深度下降速率相对更快。

In order to study the degradation regulation of asphalt pavement skid resistance performance, the test results of sideway force coefficient （SFC） and texture depth of AC-16 wearing course （anti-skid surface） and SMA-13 wearing course in a freeway during acceptance check and completion acceptance monitoring are comparatively analyzed. The result shows that the degradation law of the sideway force coefficient （SFC） of SMA wearing course is different from that of AC wearing course. SFC of SMA wearing course is not the best during acceptance check, it is rising instead of descending in the initial period of opening to traffic. SFC of SMA wearing course decreases slower than that of AC wearing course. SMA wearing course presents a better skid resistance condition. It is indicated that texture depth of two wearing courses reduces significantly with the increase of traffic load but texture depth of SMA anti- skid surface decreases quicker than that of AC anti-skid surface.