水泥路面沥青混凝土功能层累积变形试验研究  

Test on Accumulative Deformation of Asphalt Concrete Function Layer in Cement Concrete Pavement

作　　者：张陈晨[1] 高玲玲[2] 张艳聪[3] 

机构地区：[1]广东嘉应学院,广东梅州514015 [2]山西水利职业技术学院道路与桥梁工程系,山西运城044004 [3]山西省交通科学研究院黄土地区公路建设与养护技术交通行业重点实验室,山西太原030006

出　　处：《交通科技与经济》2014年第6期1-3,18,共4页Technology & Economy in Areas of Communications

基　　金：国家自然科学基金资助项目(51308329);山西省自然科学基金资助项目(2013011027-1);山西省交通厅科技项目(2013-1-10)

摘　　要：采用自主研制的沥青混凝土功能层累积变形试验箱,测试3种级配、油石比下9组沥青混凝土在重复荷载作用下的永久变形,并分析级配和油石比对累积变形的影响。结果表明:随油石比的增加,沥青混凝土功能层的累积变形稳定值不断增大,同时,达到稳定所需的加载周期也不断增长。随集料公称最大粒径的增加,混凝土功能层累积变形对油石比的敏感性急剧上升。确定功能层沥青混合料最佳油石比时,若粒径较大,则平行油石比的变化量可相对减小。Accumulative deformation of 9 groups asphalt concrete function layer was determined by the testing chamber designed by self, and the effect of grading and asphalt-stone ratio on accumulative deformation was analyzed. The results showed that： with the increasing of asphalt-stone ratio, cumulative deformation of functional layer increased, while the time to be stably was also increased. With the increasing of nominal maximum aggregate size, the sensitivity that accumulated deformation of functional layer to asphalt-stone ratio increased sharply. When determined the optimal asphalt-aggregate ratio in functional layer mixture designing, if the particle size was large, the amount of asphalt-aggregate ratio change can be relatively reduced.

关 键 词：道路工程 沥青混合料 累积变形 级配 油石比 

分 类 号：U416[交通运输工程—道路与铁道工程]