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  • ISSN 1006-3080
  • CN 31-1691/TQ

SBS/废胶粉复合改性沥青的性能

李关龙 王枫 匡民明 周晓龙

李关龙, 王枫, 匡民明, 周晓龙. SBS/废胶粉复合改性沥青的性能[J]. 华东理工大学学报(自然科学版), 2016, (1): 21-27. doi: 10.14135/j.cnki.1006-3080.2016.01.004
引用本文: 李关龙, 王枫, 匡民明, 周晓龙. SBS/废胶粉复合改性沥青的性能[J]. 华东理工大学学报(自然科学版), 2016, (1): 21-27. doi: 10.14135/j.cnki.1006-3080.2016.01.004
LI Guan-long, WANG Feng, KUANG Min-ming, ZHOU Xiao-long. Performance of SBS/Crumb Rubber Composite Modified Asphalt[J]. Journal of East China University of Science and Technology, 2016, (1): 21-27. doi: 10.14135/j.cnki.1006-3080.2016.01.004
Citation: LI Guan-long, WANG Feng, KUANG Min-ming, ZHOU Xiao-long. Performance of SBS/Crumb Rubber Composite Modified Asphalt[J]. Journal of East China University of Science and Technology, 2016, (1): 21-27. doi: 10.14135/j.cnki.1006-3080.2016.01.004

SBS/废胶粉复合改性沥青的性能

doi: 10.14135/j.cnki.1006-3080.2016.01.004
详细信息
  • 中图分类号: TE628.8

Performance of SBS/Crumb Rubber Composite Modified Asphalt

  • 摘要: 以AH-70为基质沥青,加入经糠醛抽出油预溶胀的苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS),外掺胶粉制备复合改性沥青(SBS/CRMA)。通过正交试验考察糠醛抽出油掺量、胶粉掺量、搅拌温度和搅拌时间对改性沥青性能的影响,采用动态剪切流变仪对SBS/CRMA、SBS改性沥青(SBSMA)和胶粉改性沥青(CRMA)的流变性能进行分析,并通过荧光显微镜观察SBS/CRMA的微观结构。由正交试验得到最优方案为:糠醛抽出油掺量8%(质量分数)、胶粉掺量25%(质量分数)、搅拌温度210 ℃和搅拌时间2.5 h。在最优方案下制得SBS/CRMA的5 ℃延度为327 mm、软化点为78.0 ℃、弹性恢复91.6%。SBS/CRMA在低温下更柔韧,高温下更坚硬,温度敏感性降低,抗车辙形变能力增强。结合荧光显微镜结构图,提出了SBS/CRMA的三维网络结构模型。

     

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出版历程
  • 收稿日期:  2015-04-29
  • 刊出日期:  2016-02-29

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