SBR改性沥青混合料路用性能试验研究  

Experimental Study on Road Performance of SBR Modified Asphalt Mixture

作　　者：任海萍[1] 赵玉肖[1] 赵毅[1] 

机构地区：[1]河北交通职业技术学院土木工程系,河北石家庄050091

出　　处：《公路工程》2015年第3期126-129,共4页Highway Engineering

基　　金：河北省科技支撑计划项目(13211507)

摘　　要：针对光照强烈、气候寒冷的自然环境条件,开展AC—16和AC—20两种级配类型的SBR改性沥青混合料和110#石油沥青混合料室内路用性能试验对比研究。研究结果表明:在同种级配类型时,SBR改性沥青混合料在水稳定性、高温稳定性和低温抗裂性方面均优于110#石油沥青混合料;经适度老化后,SBR改性沥青与矿料的粘附性有所提高;其他条件相同时,AC—16的水稳定性优于AC—20,AC—20的动稳定度优于AC—16;SBR—AC—16的动稳定度在老化前后比AH—AC—16分别提高了4.4%和5.6%;短期老化对沥青混合料的低温抗裂性有所降低,110#石油沥青混合料比SBR改性沥青混合料降低程度较大。This experimental study on road performance is to compare SBR modified asphalt mixture with 110^# petroleum asphalt mixture for the strong,cold climate conditions of the natural environment illumination,in which AC—16 and AC—20 two kinds of gradation type are selected. Research results show that： in the same type of grading,water stability,high temperature stability and low temperature crack resistance of SBR modified asphalt mixture are better than 110^# petroleum asphalt; after aging by moderate,adhesion between asphalt and aggregate is improved; when the other conditions are the same,the water stability of AC—16 was better than AC—20,AC—20 dynamic stability is better than AC—16; In the before and after aging,dynamic stability of SBR—AC—16 was increased respectively by 4. 4% and 5. 6%than AH—AC—16; After short-term aging,low temperature crack resistance of asphalt mixture decreases,110^# petroleum asphalt mixture fell more than SBR modified asphalt mixture.

关 键 词：道路工程 SBR改性沥青混合料 路用性能 水稳定性 高温稳定性 低温抗裂性 

分 类 号：U416.217[交通运输工程—道路与铁道工程]