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针对南方多雨地区的气候因素对路面早期水损坏的影响现状,结合湖南省宁(远)-道(县)高速公路工程中沥青稳定碎石(ATB-25)柔性基层试验路的修筑,提出了3种不同的级配曲线并在实践中进行了对比,推荐了ATB-25柔性基层级配范围,研究分析了ATB-25柔性基层的路用性能,并对试验路和正常生产路段路面结构进行了经济性比选,分析了沥青稳定碎石基层的经济效益,探讨了一种延长路面使用寿命的长寿命路面结构。
According to the current situation of the impact of climate factors on the early pavement water damage in the rainy area in the south, combined with the construction of the ATB-25 flexible grassroots pilot road in Ningyuan (Yuan) -dao (county) expressway project in Hunan Province, Three different gradation curves were compared and compared in practice. The ATB-25 flexible gradation gradation range was recommended. The road performance of ATB-25 flexible base course was studied and analyzed. The pavement structure of test road and normal production section Economic comparison, analysis of the economic benefits of bitumen stabilized gravel base, to explore a long life pavement structure to extend the life of the pavement.