再生SBS改性沥青混合料路用性能研究  

Research on pavement performance of recycled SBS modified asphalt mixture

作　　者：姚晓光 许涛[1] 张争奇[3] YAO Xiaoguang;XU Tao;ZHANG Zhengqi(College of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China;School of Civil and Construction Engineering,Chuzhou University,Chuzhou 239000,China;Key Laboratory of Highway Engineering in Special Region of Ministry of Education,Chang'an University,Xi'an 710064,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037 [2]滁州学院土木与建筑工程学院,安徽滁州239000 [3]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

出　　处：《武汉大学学报（工学版）》2021年第5期407-414,共8页Engineering Journal of Wuhan University

基　　金：江苏省研究生科研与实践创新计划项目(编号:KYCX200866);安徽省教育厅自然科学研究项目(编号:KJ2016B02);国家自然科学基金项目(编号:51008031)。

摘　　要：为对老化SBS(styrene-butadiene-styrene)改性沥青混合料进行再生,完善旧料(reclaimed asphalt pavement,RAP)再生工艺、实现变废为宝,选取4种再生方式进行对比研究。通过沥青混合料车辙试验、小梁弯曲试验、冻融劈裂试验比较不同再生方式对再生料路用性能的影响,进而确定4种再生方式下RAP的最大掺量。试验结果表明:不同再生方式制备的再生混合料随着RAP掺量的增加,路用性能变化趋势差异较大,其中方式Ⅳ对再生料的低温性能最有利,方式Ⅲ对再生料的水稳性能最有利;4种再生方式的RAP最大掺量依次为:39.5%、36.4%、43.7%、43.8%。In order to regenerate the aged styrene-butadiene-styrene(SBS) modified asphalt mixture, improve the regeneration process of the reclaimed asphalt pavement(RAP), and realize the transformation of waste into treasure, four kinds of regeneration methods were selected and compared in this paper. The rutting test, beam bending test and freeze-thaw split test of asphalt mixture were used to compare the influence of different ways on the pavement performance of the recycling mixture, and then the maximum contents of the RAP under the four regeneration ways were determined. The results show that with the increase of dosage of RAP, the variation trend of pavement performance is obvious for the recycling mixture prepared by different regeneration ways.Moreover, Way Ⅳ is the most favorable to the low temperature performance and Way Ⅲ is the best for water stability performance of recycling mixture. The maximum RAP contents of the four regeneration methods are39.5%, 36.4%, 43.7% and 43.8%, respectively.

关 键 词：道路工程 SBS改性沥青 再生方式 最大掺量 

分 类 号：U416[交通运输工程—道路与铁道工程]