液塑限联合测定法的应用与研究  

Application and research of liquid-plastic limit combined test

作　　者：蒋佰坤[1] 王春华[1] 

机构地区：[1]中航勘察设计研究院有限公司工程试验中心,北京100098

出　　处：《工程勘察》2012年第1期32-34,共3页Geotechnical Investigation & Surveying

摘　　要：本文对落锥法与液塑限联合测定法测定土的液塑限进行了对比试验研究。土样来自北京周边地区,共400余组。试验结果表明:对于粉土,误差范围大部分在-1～1之间;对于粉质粘土,误差范围大部分在-1～2之间;对于粘土,误差范围大部分在-1～5之间;两种方法液限的拟合曲线为y=1.0286x,相关系数为0.98,两种方法塑限的拟合曲线为y=1.0224x,相关系数为0.90。说明利用联合测定法取代搓条与落锥法在液塑限试验中是可行的。Comparative laboratory study is presented on the soil of liquid-plastic limit using fall cone test and liquid-plastic limit combined test. Four hundred soil patterns are obtained from surrounding area of Beijing. Test results show that error range of silt is - 1 -1 ; error range of Silty clay is - 1- 2 ; error range of clay is - 1 - 5. Fitting curve of liquid limit is y = 1. 0286x, and its related coefficient is 0.98. Fitting curve of plastic limit is y = 1. 0224x, and its related coefficient is 0.90. The results show that it is feasible for combined test to substitute rubbing and fall cone test.

关 键 词：液限 塑限 联合测定法 搓条法 丢锥法 

分 类 号：TU411[建筑科学—岩土工程]