机场沥青道面表面性能评价及雾封层使用效果

Surface performance of airport asphalt pavement and application effect of fog seal

为了对机场沥青道面表面性能进行评价,并研究雾封层技术实际使用效果,以西双版纳机场联络道为例,首先通过密度及渗水试验研究其表面泛白机理,然后对施工雷诺锋雾封层材料前后的抗滑摆值、构造深度和渗水系数进行检测分析,并对其表干性能进行评价。研究结果表明,道面结构渗水造成集料中碱性物质溶解析出是造成泛白现象的主要原因;原道面抗滑性能良好,但大部分区域已出现渗水现象,尤其离析带上最为明显;距中心标线3m处的轮迹带抗滑摆值和构造深度均较低,进行道面抗滑性能评价时应重点关注;雷诺锋雾封层材料具有良好的表干性能,且能有效改善道面抗渗性能,对抗滑影响则较小。

In order to evaluate the surface performance of airport asphalt pavement, and study the actual application effect of fog seal technology, taken an example of the taxiway of Xishuang Banna airport, firstly the surface white specks mechanism was studied by density and water seepage test. The anti-slide pendulum, texture depth and water permeability coef- ficient before and after the construction of Rhinophalt fog seal material were analyzed, and its tack-free performance was evaluated. The results show that the seepage of pavement structure causes the dissolution and precipitation of alkaline substances in the aggregate is the main reason of the white specks phenomenon. The original pavement surface anti-slide performance is well, but most areas appeared seepage phenomenon, especially the segrega- tion zone. The anti-slide pendulum value and texture depth of the wheelpath at 3 m away from the center line are lower, and the evaluation of pavement anti-slide performance should be paid more attention. Rhinophalt fog seal material has well tack-free property, and it can effectively improve the anti-permeability performance of pavement, and has little influence on anti-slide performance.