电子天平在蜡封法密度试验中的应用  

Application of electronic balance in the paraffin-coated method to determining soil density

作　　者：赵天宇[1] 张虎元[1] 严耿升[1] 张永霞[1] 

机构地区：[1]兰州大学西部灾害与环境力学教育部重点实验室,兰州730000

出　　处：《工程勘察》2009年第5期6-9,共4页Geotechnical Investigation & Surveying

基　　金：国家科技支撑计划课题(2006BAK30B02)

摘　　要：本文提出了电子天平进行蜡封法密度试验的新方案。与传统的等臂式天平蜡封试验相比,电子天平蜡封试验的实测密度离差小,精确度高。分析认为,电子天平悬称法不仅简便、快捷,而且极大地缩短了试样在水中的浸泡时间,有效防止了蜡膜微孔漏水造成的测定结果失真。同时,对比测试了不同蜡封条件下土的密度,探讨了温度、蜡膜厚度对蜡封试验测定结果的影响。A new scheme for determining soil density by using electronic balance with paraffin-coated method is put forward. Compared with the identical ann balance, the results from electronic balance are of higher accuracy and smaller deviations for the density data. The said method is quick and simple, and greatly shortens the time of soaking in water for the paraffin-coated soil, which effectively decreases the risk that the water penetrates into the soil from the defects in paraffin-coating. At the meantime, the soil density tests on different paraffin-coated conditions are carried out to illustrate the influence of the temperature and the paraffin-coated thickness.

关 键 词：电子天平 蜡封法 土 密度 

分 类 号：TU411.2[建筑科学—岩土工程]