摘要
采用颗粒状回收LDPE材料制备改性沥青,进行结合料性能检测后用于拌制SMA-13混合料;对SMA-13的级配进行优化并确定最佳油石比,并按最佳油石比成型混合料试件研究高、低温性能、水稳定性能;研究表明:与70#基质沥青相比,6%的LDPE改性沥青使SMA-13的DS提高4倍;LDPE改性沥青-10℃低温极限弯曲应变3 900με,冻融劈裂强度比、残留稳定度满足现行规范要求。
In this paper, the granulated recycled LDPE materials are used to prepare modified asphalt and to conduct the combination material performance testing for SMA-13 mixture. SMA-13 is graded to optimize and determine the best aggregate ratio. According to the optimal Whetstone ratio, the molding mixture specimen is made to study low temperature performance and water stability performance. The study shows that： 70 # asphalt is compared with 6% of LDPE modified asphalt so that the SMA-13 DS increased by 4 times; LDPE modified asphalt -10℃ low temperature limit bending strain is 3 900 p.8, freeze-thaw cleavage strength ratio and residual stability meet current regulatory requirements.
出处
《重庆工商大学学报（自然科学版）》
2013年第2期51-55,共5页
Journal of Chongqing Technology and Business University:Natural Science Edition
基金
重庆市教委基金项目(20090402)
关键词
道路工程
废旧塑料
改性沥青
固废利用
车辙
highway engineering
waste plastic
modified asphalt
solid waste use
rut
