基于体积参数与路用性能的沥青混合料成型温度研究  

Molding Temperature of Asphalt Mixture Based on Volume Parameters and Road Performance

作　　者：冯振刚[1] 焦晓来 王书娟[2] 张健 姚冬冬[2] FENG Zhengang;JIAO Xiaolai;WANG Shujuan;ZHANG Jian;YAO Dongdong(School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China;Jilin Province Transportation Research Institute,Changchun 130012,Jilin,China;Hefei City Planning and Design Institute,Hefei 230041,Anhui,China)

机构地区：[1]长安大学公路学院,陕西西安710064 [2]吉林省交通科学研究所,吉林长春130012 [3]合肥市规划设计研究院,安徽合肥230041

出　　处：《重庆交通大学学报（自然科学版）》2022年第9期123-129,146,共8页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(51508032);吉林省交通运输科技项目(2018-1-7);山西省公路局科技项目(2019-1-2);吉林省交通运输创新发展支撑科技项目(2020-1-13);山东省交通运输科技计划项目(2020B38)。

摘　　要：通过马歇尔试验对2种沥青混合料(AC-20和SMA-13)进行配合比设计,在5个不同温度(130、140、150、160和170℃)下成型了2种沥青混合料的马歇尔试件及车辙试件,分别研究了成型温度对2种沥青混合料不同体积参数和路用性能的影响。结果表明:随着成型温度的升高,沥青混合料的空隙率和矿料间隙率逐渐减小,而毛体积密度和沥青饱和度逐渐增大;高温稳定性逐渐增强,而低温抗裂性和水稳定性先升高后降低;综合沥青混合料体积参数及路用性能随成型温度的变化规律,推荐AC-20的成型温度不宜高于140℃,SMA-13的成型温度不宜高于150℃。The mix ratio of two kinds of asphalt mixtures(AC-20 and SMA-13)was designed through the Marshall test.The specimens for rutting and Marshall test of the two kinds of asphalt mixtures were prepared at five different temperatures(130℃,140℃,150℃,160℃and 170℃).The influence of the molding temperature on different volume parameters and pavement performance of the two asphalt mixtures was evaluated.The results show that with the increase of molding temperature,the void ratio and voids in mineral aggregate of the asphalt mixture gradually decrease,while the bulk density and asphalt saturation gradually increase;the high temperature stability gradually increases,while the low temperature cracking resistance and the water stability tend to increase first and then decrease.Based on the variation law of volume parameters and road performance of asphalt mixture changing with forming temperature,it is recommended that the molding temperature of AC-20 should not be higher than 140℃,and the molding temperature of SMA-13 should not be higher than 150℃.

关 键 词：道路工程 沥青混合料 成型温度 体积参数 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]