土的标准吸湿含水率试验与时间关系分析

Analysis of Relationship Between Standard Soil Retention Moisture Content Test and Time

土的标准吸湿含水率是判定土的膨胀性的重要依据之一,对土的标准吸湿含水率与时间的关系进行了分析,确立了土的标准吸湿含水率变化与时间呈良好的二次多项式函数关系。标准吸湿含水率的试验完成时间主要与土的种类、原始含水率、矿物成分、颗粒粒径等因素相关。通过对这些因素的分析,为实际工作中土的标准吸湿含水率试验提供了重要的指导意义,也为更好的理解标准吸湿含水率的含义提供了理论依据。

The standard soil moisture retention content is one of the important indices for determining properties of the expansive soil samples.The relationship between the standard soil moisture retention content and the time was laboratory investigated and the quadratic polynomial relationship with time was established.The completion time in the standard soil moisture absorption test is observed mainly related to the soil type,the initial moisture content,the mineral composition in soil particles and the particle size.Throughout the analysis of these factors,the tests discussed in this paper provide guidelines for the practical testing of the standard soil moisture absorption tests also provides a theoretical basis for a better understanding of the physical meaning of the standard moisture absorption.