基于重复压剪加载试验沥青混合料高温性能研究  

Research on High Temperature Performance of Asphalt Mixture Based on Repeated Pressure-shear Loading Test

作　　者：常剑钊 范优甲 孟会林[2,3] 边龙彪 任海洋 CHANG Jianzhao;FAN Youjia;MENG Huilin;BIAN Longbiao;REN Haiyang(Zhong Dian Jian Ji Jiao Expressway Investment Development Co.,Ltd.,Shijiazhuang 050090;Hebei Provincial Communications Planning and Design Institute,Shijiazhuang 050091;Research and Development Center of Transport Industry of Technologies,Materials and Equipment of Highway Construction and Maintenance,Shijiazhuang 050011)

机构地区：[1]中电建冀交高速公路投资发展有限公司,石家庄050090 [2]河北省交通规划设计院,石家庄050091 [3]公路建设与养护技术、材料及装备行业研发中心,石家庄050011

出　　处：《公路交通技术》2023年第2期45-51,共7页Technology of Highway and Transport

基　　金：河北省交通运输厅科技项目(TH-201923)。

摘　　要：为研究沥青混合料的高温抗永久变形性能,分别采用AMPT流变次数试验及EN标准系列中的车辙敏感性试验对20#沥青混合料HMAC-20、SBS改性沥青混合料AC-20、橡胶改性沥青混合料ARHM-20及70#沥青混合料AC-25四种沥青混合料进行了试验及评价。结果表明:1)流变次数、流变次数对应的累积永久应变、车辙变形率均可作为沥青混合料高温性能评价指标;2)流变次数试验稳定阶段的应变增长率不大于8με时,20^(#)沥青混合料高温性能良好;3)高模量沥青混合料的高温性能优于SBS改性沥青混合料。In order to study the high temperature resistance to permanent deformation of asphalt mixture,AMPT rheological times test and rutting sensitivity test in the EN standard series were conducted to evaluate four asphalt mixtures,namely,20#asphalt mixture HMAC-20,SBS modified asphalt mixture AC-20,rubber modified asphalt mixture ARHM-20 and 70#asphalt mixture AC-25.The results show that:1)The rheological times,the cumulative permanent strain corresponding to the rheological times and the rutting deformation rate can be used as the evaluation indicators of asphalt mixture high-temperature performance;2)When the strain growth rate in the stable stage of the rheological times test is not greater than 8με 20^(#)asphalt mixture has good high-temperature performance;3)The high temperature performance of high modulus asphalt mixture is better than that of SBS modified asphalt mixture.

关 键 词：道路工程 重复压剪 高温性能 高模量沥青混合料 流变次数 车辙变形率 

分 类 号：U414[交通运输工程—道路与铁道工程]