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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 decay law of anti-sliding performance of asphalt pavement wear layer over time, the horizontal friction coefficient and construction depth at the intersection of AC-16 abrasion layer (anti-slip surface) and SMA-13 abrasion layer The results show that the attenuation law of the horizontal friction coefficient of SMA wear layer is inconsistent with that of AC wear layer. The horizontal friction force does not reach its optimum at the time of inspection and acceptance, However, the coefficient of lateral friction of the SMA wear layer is slower than that of the AC wear layer, showing a better anti-skid performance. The structure depth of the two kinds of wear layer decreased significantly with the increase of vehicle load, and the rate of tectonic depth decline of SMA wear layer was relatively faster.