Abstract: C9 petroleum resin was used to modify the Liaohe 90# asphalt. The influence of the amount of C9 petroleum resin on the matrix asphalt performance has been studied ,and the modified asphalt structure has been analyzed by the scanning electron microscope (SEM). The experimental results show that, with the addition of C9 petroleum resins, the modified asphalt softening point was gradually increased, whereas the penetration was gradually decreased. The SEM analysis indicated a good compatibility of C9 petroleum resin and matrix asphal when the dosage of C9 petroleum resin was 4%, while the segregation phenomenon occured if the amount of C9 petroleum resin increased to 5%.

Key words: C9 petroleum resin, Matrix asphalt, Modified asphalt, Compatibility, Thermal stability

摘要： 采用C 9石油树脂对辽河 AH - 9 0#沥青进行改性, 考察了C 9石油树脂质量分数对改性沥青性能的影
响, 并利用扫描电镜对改性沥青结构进行了分析。实验结果表明, 随着C 9石油树脂质量分数的增加, 改性沥青软化
点逐渐增大, 针入度逐渐下降, 5℃延度先增大后下降。扫描电镜结果表明, 当C 9石油树脂质量分数为4%时, 它与
基质沥青的相容性较好, 不会出现离析现象; 当C 9石油树脂质量分数为5%时, 它与基质沥青发生离析。

关键词: C 9石油树脂, 基质沥青, 改性沥青, 相容性, 热稳定性