抗剥落剂对南疆地区沥青混合料性能的影响  

Influence of Anti-Stripping Agent on the Performance of Asphalt Mixture in Southeran Xinjiang

作　　者：周天宇 王彬[1] 杨龙飞 ZHOU Tianyu;WANG Bin;YANG Longfei(Xi’an Municipal Engineering Design&Research Institute Co.,Ltd.,Xi’an,Shaanxi 710068,China)

机构地区：[1]西安市政设计研究院有限公司,陕西西安710068

出　　处：《黑龙江交通科技》2024年第1期32-35,39,共5页Communications Science and Technology Heilongjiang

摘　　要：南疆地区在沥青道路铺筑过程中多采用抗剥落剂来弥补集料岩性不稳定的缺陷,但高温环境是否会对抗剥落剂产生不良影响还未可知。因此通过实验室模拟南疆地区的气候条件,研究长期处于南疆气候条件下沥青混合料的高温性能、低温性能以及抗疲劳性能的变化规律。研究发现,在模拟环境长期作用下,添加抗剥落剂对沥青混合料高温稳定性产生不利影响,其中动稳定度减少400次/mm,对低温抗裂性则有一定改善,最大弯拉应变增加22.2%,随着试验时间的增加,添加抗剥落剂的沥青混合料的抗疲劳性能衰减幅度大于基质沥青混合料。Anti-stripping agent is often used to make up for the unstable lithology of aggregate in the process of asphalt road paving in southern Xinjiang,but it is not known whether the high temperature environment will resist the adverse effect of stripping agent.Therefore,by simulation of the climatic conditions in southern Xinjiang in laboratory,the changes of high temperature performance,low temperature performance and anti-fatigue performance of asphalt mixture under the climatic conditions of southern Xinjiang for a long time are studied.It is found that under the long-term action of the simulated environment,the addition of anti-stripping agent has an adverse effect on the high-temperature stability of asphalt mixture,in which the dynamic stability is reduced by 400 times/mm,the low-temperature cracking resistance is improved to a certain extent,and the maximum bending tensile strain increases by 22.2%.With the increase of test time,the anti-fatigue performance of asphalt mixture with anti-stripping agent is larger than that of matrix asphalt mixture.

关 键 词：沥青混合料 抗剥落剂 环境模拟箱 温度稳定性能 疲劳性能 

分 类 号：U416.1[交通运输工程—道路与铁道工程]