基于压实性和抗剪性能的AC-16沥青混合料级配优化研究  

Research on grading optimization of AC-16 asphalt mixture based on compactness and shear strength

作　　者：关宏信 杨宇轩 曾勇 李兵 GUAN Hong-xin;YANG Yu-xuan;ZENG Yong;LI Bing(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Guangxi Transportation Design Group Co.,Ltd.,Nanning 530012,China;Foshan Highway&Bridge Construction Co.,Ltd.,Foshan 528042,China)

机构地区：[1]长沙理工大学交通运输学院,湖南长沙410114 [2]广西交通设计集团有限公司,广西南宁530012 [3]佛山市路桥建设有限公司,广东佛山528042

出　　处：《长沙理工大学学报（自然科学版）》2022年第1期12-19,共8页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(52078062);湖南省自然科学基金资助项目(2020JJ4604);湖南省交通运输厅地方标准制修订项目(B201806)。

摘　　要：【目的】探究传统路面组合结构层间界面薄弱的问题。【方法】设计了区别于AC-16沥青混合料级配范围的沥青混合料TS-16。针对TS-16、AC-16沥青混合料和传统沥青路面双层结构,开展了压实性能、路用性能试验以及不同加载速率和温度下的直剪试验。【结果】4种沥青混合料易压实性能的排序为TS-16A>TS-16B>TS-16C>AC-16,其中TS-16A沥青混合料的高温性能、低温抗裂性能、水稳定性能和抗疲劳性能均最佳。【结论】单层沥青混合料直剪强度远高于双层结构,而且越易压实的沥青混合料,其抗剪性能越好。[Purposes]The paper aims to explore the problem of the weak interface between the layers of traditional pavement composite structure.[Methods]The TS-16 asphalt mixture different from the AC-16 asphalt mixture gradation range was designed.Aiming at the TS-16,AC-16 asphalt mixture and traditional double-layer structure of asphalt pavement,the compaction performance test,road performance test and direct shear test under different loading rates and temperatures were carried out.[Findings]The compacting performance of the four asphalt mixtures is in the order of TS-16A>TS-16B>TS-16C>AC-16,and the TS-16A asphalt mixture has the best high-temperature performance,low-temperature crack resistance,water stability and fatigue resistance.[Conclusions]The direct shear strength of single-layer asphalt mixture is much higher than that of double-layer structure,and the more easily compacted the asphalt mixture,the better its shear strength.

关 键 词：层间薄弱界面 沥青混合料 压实性能 AC-16 抗剪强度 

分 类 号：U414[交通运输工程—道路与铁道工程]