SBS改性沥青老化模拟方式研究  

Research on Aging Simulation Method of SBS Modified Asphalt

作　　者：姚晓光[1,2] 王燕 YAO Xiao-guang;WANG Yan(School of Geographic Infomlation and Tourism,Chuzhou University,Chuzhou Anhui 239000;Jiangsu Sinoroad Engineering Research Institute,Nanjing 211800,China)

机构地区：[1]滁州学院地理信息与旅游学院,安徽滁州239000 [2]江苏中路工程技术研究院,南京211800

出　　处：《淮阴工学院学报》2018年第5期55-60,共6页Journal of Huaiyin Institute of Technology

基　　金：安徽省教育厅自然科学研究项目(KJ2016B02)

摘　　要：为选择合适的SBS改性沥青老化模拟方式,利用常规试验、SHRP试验研究延时旋转薄膜烘箱老化(RTFOT)、压力老化(PAV)对SBS改性沥青性能影响。对比两种老化方式的老化条件及老化能力,结合路面自然老化的回收沥青指标发现:随着老化时间的增加,沥青的性能不断退化;延时RTFOT与PAV老化均能较好的模拟路面沥青的老化情况,采用RTFOT试验进行老化模拟更加方便、科学,其中RTFOT试验4. 8 h获得的改性沥青指标相当于服务年龄为5～6年的路面沥青,RTFOT试验5 h则与服务年龄为7年的SBS改性沥青一致。In order to select a suitable aging simulation method of SBS modified asphalt, the conventional and SHRP tests were conducted to study the influence of delayed rolling thin film oven aging （RTFOT） and pressure aging vessel （PAV） on the performance of SBS modified asphalt. Comparing the aging conditions and aging ability of the two methods, and combining with the indicators of reclaimed asphalt, it shows that with the aging time increase, the asphalt perfomlance deteriorates continuously. Both delayed RTFOT and PAV aging can simulate the aging situation of road asphalt well. However, using RTFOT experiment in aging simulation is more convenient and scientific. The indicators of SBS modified asphalt after 4.8 and 5 hours with RTFOT experiment match the 5 -6 and 7 years asphalt perfomlance, respectively.

关 键 词：道路工程 SBS改性沥青 老化试验 模拟方式 

分 类 号：U416[交通运输工程—道路与铁道工程]