延庆崇礼高速公路沥青混合料低温性能试验研究  

Experimental Study on the Low Temperature Performance of Asphalt Mixture on Yanqing Chongli Expressway

作　　者：熊祝 曹东伟[2] 刘玉[1] XIONG Zhu;CAO Dong-wei;LIU Yu(Chang an University School of Highways,Xi'an 710061,China;Ministry of Transport Road Science Research Institute,Beijing 100088,China)

机构地区：[1]长安大学公路学院,西安710061 [2]交通运输部公路科学研究院,北京100088

出　　处：《科学技术与工程》2020年第14期5805-5811,共7页Science Technology and Engineering

基　　金：国家重点研发计划(2016YFE0108200)。

摘　　要：为了合理推荐延庆崇礼高速公路路面面层低温性能优越的沥青混合料,首先选取3种沥青混合料:沥青玛蹄脂碎石-13(stone mastic asphalt-13,SMA-13)、密级配沥青混合料-13(asphalt concrete-13,AC-13)、连续级配沥青混合料-13(superpave-13,SUP-13),在同一苯乙烯-丁二烯共聚物(styrene-butadiene-styrene,SBS)改性沥青条件下,通过室内试验的方法研究3种沥青混合料的低温开裂性能,然后基于以上所得低温性能优越沥青混合料,替换SBS改性沥青为环氧沥青,研究其低温性能变化。结果表明:延庆崇礼高速公路沥青路面面层在抵抗低温影响方面宜采用SMA-13沥青混合料,如果经济允许最好采用SMA-13环氧沥青混合料;且对于常年冬季平均最低温度低于-5℃的地区,都宜选用SMA-13沥青混合料作为沥青路面面层;而对于常年冬季平均温度高于15℃的地区,宜选用AC-13沥青混合料作为沥青路面面层。In order to reasonably recommend the asphalt mixture with superior low temperature performance on the pavement surface of Yanqing Chongli Expressway,three asphalt mixtureswere selected firstly.They were stone mastic asphalt-13(SMA-13),superpave-13(SUP-13)and asphalt concrete-13(AC-13).The low-temperature cracking performance of the three asphalt mixtures was studied by indoor test method under the same SBS modified asphalt conditions.Then,based on this,the epoxy asphalt was used to replace the SBS modified asphaltand its low temperature performance change was studied.The results show that SMA-13 asphalt mixture canbe used in the surface layer of asphalt surface of Yanqing Chongli Expressway to resist low temperature effects.And SMA-13 epoxy asphalt mixture canbe used if economy permits.For areas with average minimum temperature below-5℃in the winter of the year,SMA-13 asphalt mixture canbe used as asphalt pavement surface layer,while AC-13 asphalt mixture as asphalt pavement surface layer canbe used for areas where the average minimum temperature is higher than 15℃in winter.

关 键 词：沥青玛蹄脂碎石-13 连续级配沥青混合料-13 密级配沥青混合料-13 试验研究 低温性能 

分 类 号：U414[交通运输工程—道路与铁道工程]