摘要
为提升有砟轨道封闭层沥青基材料的综合性能,采用废旧橡胶粉和再生PE对沥青进行复合改性,通过三大指标试验、弯曲梁流变仪试验和动态剪切流变试验进行分析。结果表明:复合改性沥青基材料具有良好的高低温性能,推荐采用6%再生PE-11%再生胶粉、7%再生PE-15%再生胶粉的两种配比组合对沥青进行复合改性。
In order to improve the comprehensive performance of asphalt-based materials with ballasted track closure layer,this paper uses waste rubber powder and recycled PE to compound modification of asphalt,and through three major index tests,bending beam rheometer tests and dynamic shear rheological tests.the results show that the composite modified asphalt-based materials developed have good high and low temperature properties,and it is recommended to use two combinations of 6%recycled PE-11%recycled rubber powder and 7%recycled PE-15%recycled rubber powder to compound the asphalt.
作者
窦玉硕
张晓萌
胡宗文
吕鑫
张吉哲
DOU Yushuo;ZHANG Xiaomeng;HU Zongwen;LYV Xin;ZHANG Jizhe(Shandong Railway Investment Holding Group Co.,Ltd.,Shandong Jinan 250102 China;Shandong Transportation Institute,Shandong Jinan 250031 China;Qilu Transportation College of Shandong University,Shandong Jinan 250014 China)
关键词
有砟轨道
沥青基材料
复合改性
固废资源化
ballast tracks
asphalt-based materials
compound modification
solid waste recycling
作者简介
窦玉硕(1968-),男,山东临朐人,研究方向为交通工程。
