水泥改良土微观结构定量研究

Quantitative research on microstructure of modified soil with cement

本文对水泥改良土的微观结构进行了定量研究,分析了各结构参数随水泥掺量变化的规律。结果表明:水泥掺量越大,等效直径较大的结构单元体含量越多,小结构单元体数量相对减少,孔隙度减小,土颗粒的分形维数减小;试样结构单元体在90°区位内具有一定的定向性。试样物理力学性质的变化与其微观结构特征密切相关。

The microstructure of modified soil with cement is quantitatively examined in the paper. The change in structure parameters with cement is analyzed. The results show that when the cement ratio t increases,the amount of larger structural unit body increases,the number of smaller structural unit body reduces,the porosity decreases,and the fractal dimension of the soil particle decreases. Structural unit body within 90° has a certain orientation. Physical and mechanical properties of samples are closely related to its microstructure features.