Domix改性沥青及混合料的路用性能研究  

Investigation into Pavement Performance of Domix modified Asphalt and Mixture

作　　者：彭红卫[1,2] 谷莉 龚璐[4] 胡松[4] 

机构地区：[1]长沙理工大学,湖南长沙410114 [2]湖南省交通科学研究院,湖南长沙410015 [3]湖南醴茶高速公路有限公司,湖南醴陵422000 [4]湖南省高速公路管理局,湖南长沙410001

出　　处：《公路工程》2010年第4期84-88,共5页Highway Engineering

摘　　要：介绍了外掺剂Domix的性能及其作用机理。应用SHRP试验方法对不同Domix掺量的沥青结合料进行了动态剪切试验、135℃粘度试验和小梁弯曲蠕变试验,并对加入Domix改性剂后的沥青混合料进行了车辙试验、弯曲破坏试验、疲劳试验和冻融劈裂试验,结果表明,加入Domix后,沥青混合料的各项路用性能都得到了较大程度的提高,尤其是高温稳定性得到了极大的提高。并对添加Domix和SBS改性剂的沥青混合料进行了经济分析,结果表明Domix具有较好的经济性。The properties of Domix adjusting agent as well as its＇ mechanism are introduced in this paper.SHRP test method such as dynamic shear test、viscosity test at 135℃ and bending creep test of small beam are carried out to asphalt binder at different Domix adjusting agent amount.And the rutting test、bending failure test、fatigue test and freeze-thaw split test are carried out to asphalt mixture at different Domix adjusting agent amount.The result shows that when the Domix is added,various pavement properties of asphalt mixture are obviously improved,especially the high temperature stability is significantly improved.The economic analysis is carried out to add Domix modified asphalt and its＇ mixture,the result shows that Domix has much economical economical benefits.

关 键 词：Domix SHRP 沥青混合料 路用性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]