水泥稳定碎石基层长期浸水及冻融试验研究  

Long-term water immersion and freeze-thaw cycles experiment of cement-stabilized macadam bases

作　　者：吴瑞麟[1,2] 张良陈[2] 韩卓[1,2] 樊金山[1,2] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430051 [2]华中科技大学控制结构湖北省重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2011年第10期113-115,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：武汉市建委科技计划资助项目([2006]141-200607)

摘　　要：试验研究了水泥稳定碎石试件,在室内静荷载作用下,浸水时间10～360d范围内的抗压强度、间接抗拉强度变化情况.同时,对比了冻融循环(-8～8℃)前后的试件抗压强度.试验数据表明:水泥稳定碎石试件的抗压强度和间接抗拉强度都保持前期较快、后期平缓的增长趋势,3次冻融循环后的抗压强度未出现明显的降低;因此,在长期浸水及冻融循环条件下,水泥稳定碎石基层能保持的良好路用性能.At present,cement-stabilized macadam is a typical base course material widely used in highway and street engineering in China,whose strength change will directly affect the service life of the road under long-term water immersion and freeze-thaw cycles.The changing compressive strength and tensile strength of the cement-stabilized macadam base samples were tested.Their conditions were as follows： laboratory test static load with immersion time 10~360 d.The comparison between the compressive strength of the samples before and after the freeze-thaw cycles（-8~8℃） were researched and discussed.The result of the experiment shows that the compressive strength and tensile strength both keep up a fast growth trend at earlier stage and stay smooth trend at late stage while the compressive strength does not decrease apparently after three freeze-thaw cycles.Thus,the cement-stabilized macadam base can hold over its performance in the condition of long-term water immersion and freeze-thaw cycles.

关 键 词：道路工程 基层 水泥稳定碎石 浸水 冻融 抗压强度 间接抗拉强度 

分 类 号：TU521[建筑科学—建筑技术科学]