对移液管法中烘干测重的改进  

Improvements on Gravimetrybased on Oven Drying in the Pipette Method

作　　者：刘贯一[1] 鲍灵霞[1] 

机构地区：[1]河北联合大学建筑工程学院,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2012年第4期109-116,共8页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：对于粒径小于0.075 mm的颗粒,一般是用静水沉降法技术进行颗粒分析,密度计法虽然操作和设备简单,精密度也高,但是当颗粒粒径很小时,用的时间太长。移液管法虽然用的时间相对短些,但是当土样数量多时,实验效率还是不太理想。本实验对移液管法做了一些改进,能在保证精确度的条件下更有效率的完成实验测定。For the particles less than 0. 075 ram,general method is quiescent water sedimentation granula analysis.Although the operation and equipment of densimeter method is simple with high precision,when the size of particlc is very small, it costs too much time. The time of pipette method is relatively short, when the amount of soil sample is large, the experiment efficiency is not so satisfying. Some improvements are carried out based on the pipette method,in order to improve efficiency under the condifons of ensuring accuracy.

关 键 词：移液管法 烘干法 比重反算法 

分 类 号：TU441.31[建筑科学—岩土工程]