细集料砂当量对沥青混合料路用性能的影响研究  

Study on the impact of fine aggregate sand equivalent upon asphalt mixture pavement performance

作　　者：陆宇 杜骋 金光来 李一鹤 Lu Yu;Du Cheng;Jin Guanglai;Li Yihe(Jiangsu Bureau of Transportation Engineering Construction,Nanjing 210029,China;Jiangsu Zhonglu Engineering Technology Academy Co.,Ltd,Nanjing 210000,China)

机构地区：[1]江苏省交通工程建设局,江苏南京210029 [2]江苏中路工程技术研究院有限公司,江苏南京210000

出　　处：《山西建筑》2021年第3期101-102,152,共3页Shanxi Architecture

摘　　要：为了研究细集料砂当量对沥青混合料路用性能影响,首先制备了70%,60%,55%,50%四种砂当量的细集料并制备相应的试件,采用浸水马歇尔试验、车辙试验、低温小梁试验对混合料的路用性能进行研究,结果表明:随着细集料砂当量的降低混合料的浸水残留稳定度和动稳定度呈现下降趋势,破坏应变呈现先增加后减小的变化;研究结果对沥青混合料的路用性能控制有一定参考意义。In order to study the impact of fine aggregate sand equivalent upon asphalt mixture pavement performance,the paper firstly prepares four kinds of fine aggregate sand equivalent respectively with the content of 70%,60%,55%and 50%and their corresponding test specimens,studies the mixture pavement performance by applying Immersion Marshall Test,wheel tracking test and low-temperature trabecular test.Results show that:the mixture immersing residual stability and dynamic stability will reduce with the fine aggregate sand equivalent reducing,and the failure strain increases first and then decreases.The research result has certain reference meaning for controlling asphalt mixture pavement performance.

关 键 词：细集料砂当量 沥青混合料 路用性能 

分 类 号：U416.03[交通运输工程—道路与铁道工程]