华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (8): 83-86.

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SBS微观分散状态与改性沥青性能的关系

肖云 袁燕 张肖宁   

  1. 华南理工大学 交通学院,广东 广州 510640
  • 收稿日期:2004-10-10 出版日期:2005-08-25 发布日期:2005-08-25
  • 通信作者: 肖云(1973-),女,工程师,主要从事道路工程材料研究 E-mail:xy-yun@163.com
  • 作者简介:肖云(1973-),女,工程师,主要从事道路工程材料研究

Relationship Between the Micro Disperse State of SBS and the Perform ance of Modified Asphalt

Xiao Yun  Yuan Yan  Zhang Xiao-ning   

  1. College of Traffic and Communications,South China Univ.of Tech.,Guangzhou 510641,Guangdong,China
  • Received:2004-10-10 Online:2005-08-25 Published:2005-08-25
  • Contact: 肖云(1973-),女,工程师,主要从事道路工程材料研究 E-mail:xy-yun@163.com
  • About author:肖云(1973-),女,工程师,主要从事道路工程材料研究

摘要: 为探讨苯乙烯-丁二烯-苯乙烯嵌段共聚物SBS在改性沥青中的微观分散状态,采用落射荧光显微镜对SBS改性沥青的微观分散状态进行观测.发现在SBS与沥青共混的过程中,SBS的分散状态及形态结构发生了一系列的变化,改性沥青的试验指标也相应发生了一定的变化;成品改性沥青由于SBS在沥青中分散状态的不同,其改性效果也不尽相同.利用微观分散状态与宏观力学性能之间的这种对应关系,可以为改性沥青的质量控制提供简便易行的检测方法.

关键词: 改性沥青, 微观观测, 分散状态, 性能

Abstract:

To investigate the micro disperse state of SBS(Styrene-butadience-styrene block polymer)in modified asphalt,the fluorescent optical microscope was used to observe the micro disperse state of SBS-modified asphalt.It is found that,during the mixing of SBS and asphalt,the disperse state and the microstructure of SBS undergo a sedes of changes,and that the qualification of the modified asphalt varies accordingly,Moreover,with the different disperse states of SBS in the modified asphalt,different modifying effects will be obtained.According to the rela-tionship between the microstructure and the macro-performance,a simple and convenient method for the quality control of modified asphalt can be obtained.

Key words: modified asphalt, microscopic observation, disperse state, perform ance