采用辉绿岩骨料的高黏结沥青抗滑磨耗层性能研究

Study on Anti-skid Wearing Course Performance of High Viscous Asphalt Used of Dolerite Aggregate

OGFC作为我国常用的一种超薄磨耗层级配类型,具有良好的表面性能,可以保证路面良好的使用性能和行车安全。与传统沥青路面相比,OGFC路面具有减少水雾和眩光、降低噪音、防水漂、改善路面标志的可见度、提高潮湿路面的抗滑性等特点。为验证辉绿岩骨料在OGFC-10抗滑磨耗层中的应用,采用高粘沥青,选用贵州黔西南地区辉绿岩骨料,在OGFC的规范要求级配范围内,提出对大空隙排水高粘沥青抗滑混合料的级配优选建议,为贵州抗滑磨耗层OGFC-10中应用辉绿岩骨料提供参考。

The open graded friction course(OGFC) as a graded type of ultra-thin friction course commonly in China has the good surface performance,and can guarantee the good using performance and driving safety of pavement.Compared with the traditional asphalt pavement,OGFC pavement has the characteristics of decreasing the water mist and glare,reducing the noise,preventing the hydroplaning,improving the visibility of pavement markers,and improving the skid resistance of wet pavement.In order to verify the application of dolerite aggregate in OGFC-10 anti-skid wearing course,the high viscous asphalt is used and the dolerite aggregate is selected from the southwest of Guizhou Province.This paper puts forward the recommendation of graduation optimization for the anti-skid mixture of large-gap drainage high viscous asphalt in the graduation range of OGFC standard requirement,which can be referred for the application of dolerite aggregate in the anti-skid wearing course OGFC-10.