不同再生方式的再生SBS改性沥青老化性能研究  

Research on Aging Property of Regenerated SBS Modified Asphalt Regenerated by Different Methods

作　　者：甘新立 郑南翔[1] 刘羽[2] 

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]长安大学材料科学与工程学院,陕西西安710064

出　　处：《公路工程》2014年第5期47-49,共3页Highway Engineering

基　　金：中国博士后科学基金项目(2013M532004);中央高校基本科研业务费专项资助(CHD2011JC164)

摘　　要：采用新基质沥青、新改性沥青和再生剂再生老化SBS改性沥青,测定了不同方式再生后的SBS改性沥青RTFOT老化前后的25℃针入度和老化后的残留延度,以及不同老化时间后的质量损失。通过对不同再生再生方式再生后的SBS改性沥青的残留针入度比、残留延度和质量损失率进行对比,分析再生SBS改性沥青的老化性能。研究结果表明,通过新改性沥青再生的SBS改性沥青的老化性能优于通过新基质沥青和再生剂再生的SBS改性沥青。New matrix asphalt,new modified asphalt and recycling agent was used for the regeneration of the aging SBS modified asphalt,and the 25 ℃ penetration before and after RTFOT ageing,the residual ductilityafter aging and the mass loss rateafter different aging time was determinded. Through the comparison of the residual penetration ratio,residual ductility and mass loss rate of the SBS modified asphalt after been regenerated by different ways,the aging property of the regenerated SBS modified asphalt was analyzed. The results show that,the aging property of the regenerated SBS modified asphalt regenerated by new modified asphalt,is better than the regenerated SBS modified asphalt regenerated by new modified asphalt and recycling agent.

关 键 词：道路工程 再生沥青 再生方式 老化性能 

分 类 号：U414.1[交通运输工程—道路与铁道工程]