高黏高弹道路沥青高温评价指标研究  

Study on High Temperature Evaluation Index of Bitumen with High Viscosity&Elasticity Recovery for Pavement

作　　者：胡敏乐 杨龙飞 王云 李健 张博[1] 陈江[1] Hu Minle;Yang Longfei;Wang Yun;Li Jian;Zhang Bo;Chen Jiang(Xi’an Municipal Design and Research Institute Co.,Ltd.,Xi’an 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：《市政技术》2023年第9期50-54,212,共6页Journal of Municipal Technology

摘　　要：为明确高黏高弹道路沥青高温流变性能评价指标,选择4种高黏高弹道路沥青作为研究对象,采用动态剪切流变仪分别进行温度扫描、频率扫描和多重应力蠕变恢复等试验,以研究其高温流变性能,并以大孔隙开级配排水式沥青混合料(PA-13)动稳定度为参考序列,以动力黏度、改进型车辙因子、零剪切黏度、不可恢复蠕变柔量以及蠕变恢复率为比较序列进行灰色关联分析,确定了高黏高弹道路沥青高温流变性能的主要评价指标。研究结果表明:对于高弹高黏改性沥青,可以选用零剪切黏度作为评价高黏高弹道路沥青的主要高温性能指标,其次为改进型车辙因子;若以多重应力蠕变恢复试验方法评价高黏高弹道路沥青的高温性能时,应以蠕变恢复率为主。In order to clarify the evaluation index of high temperature rheological properties of bitumen with high viscosity and elasticity recovery for pavement(BHVERP),four kinds were selected as the researched object.The dynamic shear rheometer was used to carry out temperature scanning test,frequency scanning test and multiple stress creep recovery test respectively to study the high temperature rheological properties.Taking the dynamic stability of microporous open graded drainage asphalt mixture(PA-13)as the reference sequence,the dynamic viscosity,improved rutting factor,zero shear viscosity,unrecoverable creep compliance and creep recovery rate as the comparison sequence,the grey correlation analysis is carried out to determine the main evaluation indexes of high-temperature rheological properties of BHVERP.The results show that the zero shear viscosity is the main high temperature performance index for evaluating BHVERP,followed by the improved rutting factor;The creep recovery rate is the main factor if the multiple stress creep recovery test is applied.

关 键 词：道路工程 高黏高弹道路沥青 高温性能 评价指标 灰色关联分析 

分 类 号：U414.1[交通运输工程—道路与铁道工程]