PPA&SBS复合改性沥青高温性能试验研究  

High Temperature Performance Experiment Study of PPA&SBS Composite Modified Asphalt

作　　者：王利强[1] 王岚[1] 李超[1] 王子豪[1] 

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051

出　　处：《公路工程》2017年第5期298-302,307,共6页Highway Engineering

基　　金：内蒙古交通科技项目(NJ-2014-21)

摘　　要：为了研究不同掺量PPA和SBS复合改性沥青结合料高温性能,进行沥青三大指标试验以及动态剪切流变试验(DSR),并将复合改性沥青性能与SBS改性沥青进行对比。实验结果表明:不同掺量的PPA&SBS复合改性沥青高温性能均随温度升高而下降,且在温度大于52℃以后不同沥青高温性能相差不大,同种沥青高温性能降低趋于平缓;SBS2.0%+PPA0.5%和SBS3.0%+PPA1.0%两种复合改性沥青中,综合考虑路用性能及性价比后,高温性能最接近于SBS4.0%单独改性沥青的是SBS2.0%+PPA0.5%复合改性沥青,可在满足技术要求的前提下作为SBS4.0%单独改性沥青的替代。In order to study the high temperature performance of different SBS compound modified asphalt binder , the three index test of asphalt and dynamic shear rheometer test（DSR ） were conducted , and then c o m p a r e d the performance of composite asphalt with S B S modified as-phalt. The experimental results show that thehigh temperatureperformance of different dosage of P P A ＆ S B Scomposite modified asphalt fallwith the rise of temperature , and the high different dosage of PPA and S B S are similar , the reduce trend of high tempesame asphalt are placid after more than 52 ; In the two kinds of composite modified asphalt----SBS2. 0 % ＋ PPA 0. 5% and SBS3. 0 % ＋ PPA 1. 0 % , S B S2. 0 % ＋ P P A 0. 5% , the most d o s e to the SBS4. 0 % only modified asphalt in high temperature performance , with the consideration of road per-formance and cost performance comprehensivv , could be a substitute of S B S4. 0 % only modified asphal- tin the condition of meet the technical requirements .

关 键 词：PPA SBS DSR 复合改性沥青 高温性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]