不同高黏剂对排水沥青磨耗层路用性能的影响  

Influence of different high viscosity agents on pavement performance of drained asphalt wear layer

作　　者：王明铜 WANG Mingtong(Jingtai,Baiyin Highway Development Center,Gansu Province,Baiyin 730499)

机构地区：[1]甘肃省白银公路事业发展中心景泰公路段,甘肃白银730499

出　　处：《中国建材科技》2024年第3期121-123,120,共4页China Building Materials Science & Technology

摘　　要：采用不同高黏改性剂对SBS改性沥青进行改性获得高黏改性沥青,通过高温车辙、低温小梁弯曲和冻融劈裂试验对不同高黏改性排水沥青磨耗层的高温、低温和水稳性能进行研究。结果表明,高模量剂B对SBS改性沥青的改性效果最佳,高模量剂B改性沥青60℃动稳定性达到11665次/mm,弯曲破坏应变为3862uε,冻融劈裂残留强度比为91.5%。Different high viscosity modifiers are used to modify SBS modified asphalt to obtain high viscosity modified asphalt.The high temperature rutting resistance,low temperature cracking resistance and water stability of different high viscosity modified drainage asphalt wear layers are studied through high temperature rutting test,low temperature trabecular bending test and freeze-thaw splitting test.The results show that high viscosity modifier B has the best modification effect on SBS modified asphalt.The dynamic stability of high modulus agent B modified asphalt at 60℃reaches 11665 times/mm,the bending failure strain is 3862uε,and the residual strength ratio of freeze-thaw splitting is 91.5%.

关 键 词：排水沥青磨耗层 高黏改性沥青 高温稳定性 低温抗裂性能 水稳定性能 

分 类 号：U414[交通运输工程—道路与铁道工程]