生石灰处置过湿粘性土压实性研究  

Research on Compaction of Lime Treated Over Wet Clayey Soil

作　　者：张文思 战高峰[1] 董伟智[1] 朱福[1] ZHANG Wen-si;ZHAN Gao-feng;DONG Wei-zhi;ZHU Fu(School of Transportation Science and Engineering,Jilin Jianzhu University,Changchun 130118,China)

机构地区：[1]吉林建筑大学交通科学与工程学院,长春市130118

出　　处：《北方交通》2018年第3期70-73,共4页Northern Communications

基　　金：吉林省交通厅项目(2011103);吉林省教育厅"十三五"科学技术项目(JJKH20170260KJ)

摘　　要：针对吉舒高速公路项目路段中过湿粘性土含水率较大、在填筑路基时难以满足压实要求的问题,结合现场施工的实际情况,通过室内土工试验,对该路段两种经过生石灰处置的过湿粘性土的压实性进行了对比研究。试验结果表明:塑性指数大的粘性土经过生石灰处置后物理性质变化明显,处置后土体的塑性指数与黏粒含量显著下降,施工时允许的含水率上限变高,压实性能改善明显,可以当作路基填料。Aiming at the over wet clay with high water content in Jishu highway project road,difficult to reach the requirements of the problem in subgrade compaction,combined with the actual situation of the construction site,through indoor soil test,the section two after the disposal of the lime compaction of over wet clay was studied.The test results showed that the clay soil with large plasticity index changed obvious physical properties after treated with lime,after disposal of the lime soil plasticity index and clay content decreased significantly and the allowable upper limit of moisture content during construction becomes high,compaction performance improved significantly,can be used as roadbed filler.

关 键 词：过湿粘性土 生石灰处置 压实性 室内土工试验 

分 类 号：U416.1[交通运输工程—道路与铁道工程]