改性沥青在排水性沥青路面中的应用  

Application of modified asphalt in the drainage asphalt pavement

作　　者：徐希娟[1,2] 戴经梁[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]西安公路研究所,陕西西安710054

出　　处：《长安大学学报（自然科学版）》2009年第3期27-31,共5页Journal of Chang’an University(Natural Science Edition)

摘　　要：为了研究改性沥青性能对排水性沥青混合料的影响,针对目前常用的几种类型改性沥青,通过粘韧性试验、60℃粘度试验、流淌试验、飞散试验、高温车辙试验和低温弯曲试验,对改性沥青和混合料进行了各项技术指标测试,系统评价了不同改性沥青对沥青混合料路用性能的影响,提出了中国排水性路面改性沥青技术要求的建议值。结果表明:不同类型的改性沥青其性能差别较大,应分别提出技术要求;冻融劈裂试验比残留稳定度试验能更好地评价排水沥青混合料的水稳性;添加少量木质素纤维可以明显提高沥青与矿料之间的握裹力,SBS改性沥青混合料和SBR改性沥青混合料各项指标都能达到与日本高粘度改性沥青相同的技术标准。In order to study the influence of performance of modified asphalt on drainage asphalt mixture, aimed at several kinds of asphalts in common use, technical indicators of modified bitumen and mixture were test through the sticky toughness test, 60 ℃ viscosity test, running test, dispersion test, high-temperature rutting test and low-temperature bending test. Evaluation of influence of the different modified asphalts on performance of asphalt pavement was done. The recommended value of technical requirements of modified asphalt road surface drainage was put forward. The results show that differences of different types of modified asphalt performance should be proposed separately by the technical requirements; compared with residue test, freeze- thaw stability splitting test can better evaluate water stability of the drainage asphalt mixture; adding a small amount of lignin fiber can markedly improve asphalt and mineral aggregate bond between the force, indicators of SBS modified asphalt mixture and SBR modified asphalt mixture achieve the same technical standards of high-viscosity modified asphalt. 11 tabs, 13 refs.

关 键 词：道路工程 排水性路面 改性沥青 适用性 

分 类 号：U414.75[交通运输工程—道路与铁道工程]