密度计法对粉土颗粒分析误差影响的试验研究  

Experiment Studies on the Testing Errors of Silt Particles Using Densitometer Method

作　　者：王冰[1] WANG Bing(Shandong Power Consulting Institute Co.Ltd.,Jinan 250013)

机构地区：[1]山东电力工程咨询院有限公司

出　　处：《土工基础》2019年第5期621-622,626,共3页Soil Engineering and Foundation

摘　　要：颗粒分析试验是对土壤粒径级配的分析过程,是土性定名的重要依据,密度计法是颗粒分析试验常采用的试验方法。现有试验规范均要求对颗分土样进行浸泡、煮沸处理,但操作方法及步骤不尽相同。采用多种方法对粉土进行试验,选取最佳试验方法。经对比分析,认为粉土的浸泡处理对试验结果影响不大,可采取直接加热煮沸的方法使土分散即可。Gradation analysis is a testing method that analyzing the soil particle size distribution and is an important index property for the soil classification.Its accuracy will also affect the subsequent selecting of the soil strength parameters.The densitometer method is often used in the gradation analysis test.The current test specifications all require time consuming soaking and boiling in the preparation of granular soil samples.In this paper,several methods were used to perform the gradation analysis of silty soils.The results showed that the soaking preparation of silty soils had very little effect on the test results,and the soil could be dispersed by direct heating and boiling.

关 键 词：土工试验 颗粒分析试验 密度计法 粘粒含量 

分 类 号：TU411[建筑科学—岩土工程]