水泥土收缩性能室内试验研究  

A laboratory experimental study on contractibility of cement-soil

作　　者：嵇晓雷[1] 杨平[2] 刘红梅[1] 

机构地区：[1]江苏城市职业学院建筑工程学院,江苏南京210019 [2]南京林业大学土木工程学院,江苏南京210037

出　　处：《四川建筑科学研究》2017年第2期81-84,共4页Sichuan Building Science

基　　金：江苏省高校"青蓝工程"(2016);江苏开放大学"十二五"规划立项课题(14SEW-Q-041);江苏省高等学校大学生创新创业训练计划(201614000008Y)

摘　　要：从水泥土收缩性方面研究了水泥土搅拌桩的止水抗渗性能,通过对水泥土室内收缩试验数据进行分析,建立了水泥土收缩性能与养护龄期、水泥掺入比以及含水率的定量关系。试验结果表明,水泥土搅拌桩实际施工过程中,避免搅拌桩长时间露天暴露,控制水泥掺入比为20%~25%,能够使水泥土收缩性满足水泥搅拌桩抗渗性能要求。试验结果为水泥土搅拌桩的工程应用提供了理论基础。This paper explores the impermeability of cement-soil mixing piles from the perspective of the contractibility of cement-soil. By analyzing the laboratory data a quantitative relationship is concluded between the cement-soil contractibility and ages of cement-soil, cement mixture ratio and water content. The result shows that long time air exposure of the mixing piles should be avoided and the cement mixture ratio should be kept within 20% to 25% , both of which enable the contractibility of cement-soil to realize the water impermeability. The experiment strives to provide theoretical reference for project application of cement-soil mixing piles.

关 键 词：水泥土 收缩性 养护龄期 水泥掺入比 含水率 

分 类 号：TU411[建筑科学—岩土工程]