橡胶沥青性能试验及影响因素分析
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

U414

基金项目:

河南省交通运输厅科技计划项目(2017J1)


Rubber asphalt performance test and analysis of influencing factors
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为进一步分析橡胶沥青性能,结合 SHRP 体系试验要求,采用室内标准试验方法(JTG E20—2011),对胶 粉种类、掺量、拌合温度及基质沥青选择等影响因素展开了分析。研究结果表明:橡胶沥青对胶粉种类和细度具 有选择性。胶粉越粗,改性后的沥青性能越优,且货车轮胎胶粉改性后的沥青软化点、老化前(后)的车辙因子、 抗疲劳因子及蠕变劲度均优于小车轮胎胶粉的;16%~18%掺量的 20 目货车轮胎胶粉改性沥青在 177 ℃时的黏度 为 1.7~3.2 Pa?s,比较适宜施工的需要;升高拌和温度会使得橡胶沥青的高温性能和抗疲劳性能下降,建议拌合 温度控制在 180 ℃以内;从车辙因子和抗疲劳因子反映的程度上看,沥青标号越高,经过胶粉改性后的沥青性能 指标越低。

    Abstract:

    In order to further analyze the performance of rubber asphalt, this paper combines the requirements of SHRP system test is considered, using indoor standard test method (JTG E20—2011) to analyze the influencing factors such as rubber powder type, dosage, mixing temperature and matrix asphalt selection. The results show that rubber asphalt is selective for the type and fineness of rubber powder. The coarser the rubber powder is, the better the asphalt performance is, and the softening point of the asphalt is modified by truck tire rubber powder, rutting factor and anti-fatigue factor before and after aging, and the creep stiffness S are better than those of the car tire rubber powder. 16% to 18% of the 20-mesh truck tire rubber powder modified asphalt has 177 ℃ viscosity of 1.7~3.2 Pa·s, and is more suitable for construction needs. As the mixing temperature increases, the high temperature performance and fatigue resistance of the rubber asphalt decrease. It is recommended that the mixing temperature can be controlled within 180 ℃. From the reaction degree of rutting factor and anti-fatigue factor, the higher the asphalt marking is, the lower the asphalt performance index is after rubber powder modification.

    参考文献
    相似文献
    引证文献
引用本文

冯明林 ,冯正翔 ,郑伟 ,等.橡胶沥青性能试验及影响因素分析[J].交通科学与工程,2020,36(1):33-37.
FENG Ming-lin, FENG Zheng-xiang, ZHENG Wei, et al. Rubber asphalt performance test and analysis of influencing factors[J]. Journal of Transport Science and Engineering,2020,36(1):33-37.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-06-09
  • 出版日期:
文章二维码