基于液塑限联合测定法的界限含水量确定方法研究  

Study on determination method of critical moisture content based on liquid-plastic limit combined measurement

作　　者：张宗堂[1] 高文华[1] 黄建平[1] 王闯[1] Zhang Zongtang Gao Wenhua Huang Jianping Wang Chuang(Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan University of Science and Technology, Xiangtan 411201, China)

机构地区：[1]湖南科技大学岩土工程稳定控制与健康监测湖南省重点实验室,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2016年第3期58-63,共6页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(41272324);湖南省自然科学基金资助项目(14JJ7057);湖南省研究生科研创新项目(CX2016B561)

摘　　要：概述了液塑限联合测定法的基本原理、试验方法和步骤.对界限含水量的确定方法,特别是对作图法和解析法进行了探讨.在此基础上,以湘潭市某城市主干道路基粉质粘土为研究对象,采用液塑限联合测定法进行了不同含水量下的锥入深度测定.运用作图法和解析法,得出了不同土样的液限和塑限值.采用2种方法所获结果的对比分析表明:解析法不仅方法简便、结果准确,而且效率很高,是一种值得推广的方法.The basic principle, test methods and steps of liquid-plastic limit combined measurement were summarized; and the determination method of critical moisture content was probed into, especially the graphic method and the analytic method. On this basis, taking silty clay of the main road sub-grade of Xiangtan as the research object, different moisture contents of cone into the depth were measured by using iiquid-plastic limit combined measurement. Graphic method and analytic method are utilized to obtain liquid limit and plastic limit of different soil samples. Comparison of the results obtained from the two methods suggests that the analytic method, which is a kind of method worth promoting, is not only simple, accurate, but also highly efficient.

关 键 词：液限 塑限 液塑限联合测定 界限含水量 作图法 解析法 

分 类 号：TU43[建筑科学—岩土工程]