水泥改良土的剪切试验研究

在分析水泥改良土的机理以及主要影响因素的基础上，基于传统的直接剪切试验，研究了水泥改良土的抗剪强度特性及其主要影响因素。结果表明:水泥改良可以较大程度上提高土样的抗剪强度；随着初始含水率与水泥掺入比的增加，抗剪强度均不断增加；养护时间对于抗剪强度的促进作用明显体现在养护初期阶段；土样密实度的增加，会引起土体抗剪强度的增加，但对于内摩擦角而言，增加的幅度则较小。

Shear Test Study on Cement Modified Soil

Based on the analysis of the mechanism and main influencing factors of cement improvement soil, the shear strength characteristics and the main influencing factors of cement modified soil were studied by means of traditional direct shear test. The result shows that, cement improvement may increase the soil sample’s shear strength to a great extent; as the initial water content and the cement mixing ratio increase, the shear strength increases continuously; the promotion of curing time on the shear strength is reflected in the initial stage of maintenance; the increase of soil sample’s compactness will lead to increase of the shear strength, however, for the internal friction angle, the increment is small.