偶联改性SBS复合改性沥青性能试验研究  

Experimental Study on the Performance of Coupling Modified SBS Composite Modified Asphalt

作　　者：李强 钱普舟 马丁红 安丰伟 LI Qiang;QIAN Puzhou;MA Dinghong;AN Fengwei(JSTI Group,National Engineering Research Center of Advanced Road Materials,Nanjing 211112,China;Gansu Highway Aviation Tourism Research Institute Co.,Ltd.,Lanzhou 730000,China)

机构地区：[1]苏交科集团股份有限公司新型道路材料国家工程研究中心,南京211112 [2]甘肃公路航空旅游研究院有限公司,兰州730000

出　　处：《交通科技》2023年第6期125-128,共4页Transportation Science & Technology

基　　金：甘肃省科技厅科技计划项目(21YF11GA013)资助。

摘　　要：为提高SBS改性沥青的黏结力和流变性,研究偶联改性剂与SBS复配改性沥青的物理性质、流变性能和黏度,分析偶联改性剂掺量对复合改性沥青性能的影响。结果表明,随着改性剂掺量的增大,改性沥青针入度线性下降,软化点和延度逐渐增大;复数剪切模量和车辙因子逐渐提升,沥青的抗剪切变形能力明显改善;复合改性沥青60℃动力黏度和170℃旋转黏度均呈线性增长趋势。In order to improve the adhesion and rheology of SBS modified asphalt,the physical properties,rheological properties and viscosity of coupling modifier and SBS compound modified asphalt were studied,and the effect of coupling modifier content on the performance of composite modified asphalt was analyzed.The results show that with the increase of modifier content,the penetration of modified asphalt decreases linearly,and the softening point and ductility increase gradually.The complex shear modulus and rutting factor are gradually improved,and the shear deformation resistance and high-temperature deformation resistance of asphalt is obviously improved.The 6℃dynamic viscosity and 170℃rotational viscosity of the composite modified asphalt show a linear growth trend.

关 键 词：偶联改性剂 改性沥青 物理性质 流变性能 黏度 

分 类 号：U414[交通运输工程—道路与铁道工程]