裂隙粘土的热分析研究

A Thermal Aualysis Study of Fissure Expansive Soils

本文选用不同地区的铁路沿线裂隙粘土,进行风干、过筛、沉降等处理后取得土样。经日产Rigaku型微量热分析仪作DTA-TG法分析。由实验结果可以看出,土样中含蒙脱石、伊利石等矿物,并用热分析法定量给出了试样中物质的含量。

The soil samples analysed in this paper are fissure expansivesoils collected from different places along the railways inChina. They are treated by air-drying, sifting and subsiding,and then analysed by means of a thermal analysis equipmentof type RIGAKU made in Japan. DTA-TG method is used in theanalysis and the experimental curves are obtained. From thecurves it can be seen that the soil samples contain montmoril-lonite, ledikite and some other minerals, the amount of whichbeing determined quantitatively.