水泥稳定碎石温缩变形特性试验研究  

Research on Temperature Shrinkage Deformation Properties of Cement-Stabilized Macadam

作　　者：孙兆辉[1,2] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]同济大学道路与交通工程教育部重点实验室,上海200092

出　　处：《建筑材料学报》2009年第2期249-252,共4页Journal of Building Materials

摘　　要：对6种典型水泥稳定碎石基层材料在风干和饱水状态下分别进行温缩试验,结果发现:处于风干状态的水泥稳定碎石基层材料最不利温度区间为-10~10℃,当温度骤然下降或回升时,水泥稳定碎石基层材料的温缩应变和温缩系数急剧增大;饱水状态下,水泥稳定碎石基层材料在30~40℃及-20^-10℃区间的温缩应变和温缩系数一般较风干状态下大.Temperature shrinkage tests were conducted for cement-stabilized macadam base course materials of 6 gradation types under the air-dry and water-saturated conditions.It is found by analyses that-10~10 ℃ is the most disadvantageous temperature range when cement-stabilized macadam base course materials are air-dry.Its temperature shrinkage strain and temperature shrinkage coefficient value are augmented sharply when the temperature declines abruptly and then recovers.The temperature shrinkage strain and temperature shrinkage coefficient values of cement-stabilized macadam base course materials under the conditions of water-saturated when temperature gets to 30~40 ℃ and-20^-10 ℃ are bigger than that under air-dry condition.

关 键 词：水泥稳定碎石 风干 饱水 温缩 应变 

分 类 号：U416.214[交通运输工程—道路与铁道工程]