硬质沥青稳定碎石低温抗裂性能评价指标比较分析  

Comparative analysis of evaluation indexes of low temperature crack resistance of hard asphaltstabilized macadam

作　　者：姚锐 王黎明[1] 孙永卓 YAO Rui;WANG Liming;SUN Yongzhuo(School of Civil Engineering and Transportation,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学土木与交通学院,黑龙江哈尔滨150040

出　　处：《粘接》2025年第4期95-98,共4页Adhesion

基　　金：黑龙江省交通运输厅科技项目(项目编号:HJK2023B014-3);黑龙江省交通运输厅科技项目(项目编号:20210027)。

摘　　要：为了合理评价硬质沥青稳定碎石的低温抗裂性能,通过不同低温试验比较分析了收缩系数、冻断温度和低温疲劳参数等指标的适用性。结果表明:冻断温度和低温疲劳参数与最大弯拉应变相关性显著,2者可以用于评价硬质沥青稳定碎石低温抗裂性能的优劣,其中冻断温度相关性最高且具有明确的物理意义,故首选其为最佳评价指标。据此评价可知:硬质沥青稳定碎石的低温开裂温度均低于-20℃且满足我国沥青路面冬冷区的气候分区要求。In order to reasonably evaluate the low temperature crack resistance of hard asphalt stabilized macadam,the applicability of shrinkage coefficient,freezing temperature and low temperature fatigue parameters were compared and analyzed by different low temperature tests.The results show that the freezing temperature and low temperature fatigue parameters are significantly correlated with the maximum flexural tensile strain,and the two can be used to evaluate the low temperature crack resistance of hard asphalt stabilized macadam.Among them,the freezing temperature has the highest correlation and has a clear physical meaning,so it is the best evaluation index.According to the evaluation,it can be seen that the low temperature cracking temperature of hard asphalt stabilized macadam is lower than-20℃and meets the climatic zoning requirements of winter cold zone of asphalt pavement in China.

关 键 词：硬质沥青 沥青稳定碎石 低温抗裂性能 评价指标 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]