复合型融雪剂对沥青性能影响分析  

Influence of Compound Snowmelt Agent on Asphalt Performance

作　　者：王永[1,2] 栗威 柴金玲[1] WANG Yong;LI Wei;CHAI Jinling(He＇nan Vocational and Technical College of Communications,Zhengzhou,He＇nan 450006,China;State Engineering Laboratory of Highway Maintenance Technology,Changsha University of Science ＆ Technology,Changsha,Hu＇nan 410076,China;He＇nan Transportation Research Institute Co.,Ltd.,Zhengzhou,He＇nan 450006,China)

机构地区：[1]河南交通职业技术学院,河南郑州450006 [2]长沙理工大学公路养护技术国家工程实验室,湖南长沙410076 [3]河南省交通科学技术研究院有限公司,河南郑州450006

出　　处：《施工技术》2018年第21期149-153,共5页Construction Technology

基　　金：长沙理工大学公路养护技术国家工程实验室开放基金资助项目(kfj140103);河南省高等学校重点科研项目(17A560021)

摘　　要：为研究融雪剂对沥青结合料性能的影响,优化选择合适的沥青材料,利用室内试验分析融雪剂对基质沥青和SBS改性沥青高温性能、敏感性能、低温性能及抗老化性能的影响。结果表明:融雪剂对2种沥青存在不同程度的影响,提高了基质沥青的软化点和针入度指数,降低了低温延度指标,改善了基质沥青的高温抗车辙性能和温度敏感性,劣化了低温抗裂性能,且随试验温度的增加,融雪剂对低温性能劣化更加严重;对于SBS改性沥青,融雪剂降低了软化点、针入度指数和低温延度指标,劣化了高温性能、感温性能和低温抗裂性能。老化试验分析发现:3大指标能够有效评价融雪剂对基质沥青抗老化性能的改善程度,而对SBS改性沥青抗老化性能评价并不适用,且SBS改性沥青对融雪剂劣化低温性能的抵抗能力优于基质沥青。In order to study the effect of snowmeh agent on the asphalt binder performance and to optimize the selection of suitable asphalt materials, the effects of snowmeh agent on the high temperature performance, sensitivity performance, low temperature performance and anti-aging performance of base asphalt and SBS modified asphalt were analyzed by laboratory tests. The results show that snowmeh agent has different effects on the softening point and penetration index of the two kinds of asphalts, it reduces the low-temperature ductility index, improves the high-temperature rutting resistance and temperature sensitivity of the base asphalt, and deteriorates the low-temperature crack resistance. With the increase of test temperature, snowmeh agent has effect on the low-temperature. For SBS modified asphalt, snowmeh agent reduces softening point, penetration index and low temperature ductility index, and deteriorates high temperature performance, temperature sensitivity and low temperature crack resistance. Aging test analysis shows that the three indexes can effectively evaluate the anti-aging performance of snowmeh on base asphalt. It is not suitable to evaluate the aging resistance of SBS modified asphalt, and the resistance of SBS modified asphalt to degraded low temperature performance of snow melting agent is better than that of base asphalt.

关 键 词：公路工程 路面 融雪剂 SBS改性沥青 影响分析 

分 类 号：U415.12[交通运输工程—道路与铁道工程] TU997[建筑科学—市政工程]