高原高海拔地区SBS改性沥青混合料耐久性研究进展
Research progress on the durability of SBS-modified asphalt binder exposed to the plateau climate
邓威 1赖淏 1吴婧 2吴勇刚 3翟健梁 1毛楠 1师长春 1陆福洋 1熊锐1
作者信息
- 1. 长安大学 材料科学与工程学院,陕西 西安 710061
- 2. 青海交通职业技术学院,青海 西宁 810000
- 3. 青海省果洛公路工程建设有限公司,青海 西宁 810000
- 折叠
摘要
综述了高原地区典型气候条件(冻融、盐蚀、强紫外线等环境因素及其耦合作用)对SBS改性沥青的损伤机制,探讨了高原特殊气候条件下SBS改性沥青耐久性提升手段.结果表明,SBS改性沥青耐久性高于基质沥青,然而SBS改性沥青在高原地区的耐久性仍存在局限性.通过对现有研究总结发现,聚烯烃弹性体(POE)及橡胶颗粒(CR)应用可有效改善沥青混合料耐久性,有利于提高SBS改性沥青在高原地区适用性.
Abstract
This paper reviews the damage mechanism of SBS-modified asphalt binder under typical plateau climate conditions(freeze-thaw,salt erosion,intense ultraviolet radiation,and their coupling effects),and discusses the means to improve the durability of SBS modified asphalt under special plateau climate con-ditions.The results show that the durability of SBS-modified binder asphalt is higher than that of base as-phalt,but the durability of SBS modified asphalt in high-altitude plateau areas still needs to be improved.Through a summary of existing research,it is found that the application of POE(polyolefin elastomer)and CR(crumb rubber)can improve its durability,and enhance its suitability for use in high-altitude plateau areas.
关键词
高原环境/SBS/沥青混合料/耐久性/复合改性Key words
plateau environment/SBS/asphalt mixture/durability/composite modification引用本文复制引用
基金项目
青海省自然科学基金项目(2021-ZJ-765)
出版年
2024
NETL
NSTL
万方数据