广西靖西红黏土及其击实后的水稳定性试验研究

为分析红黏土地基及其强夯法加固后的水稳定性问题，对红黏土及其击实样在饱和前、饱和后的固结特性以及剪切特性进行了室内试验。研究表明，土样经过击实后，压缩稳定后的应变值比较小，压缩稳定再浸水后土样的变形只有少量增加；原状土样在剪切过程中一般呈现应变软化的特征；固结饱和后快剪试验强度明显要比固结未浸水试验强度要小。因此，浸水效应对红黏土强度的影响是很明显的。

Water-sensitivity of compacted laterite clays in Jingxi of Guangxi Region

In order to investigate the water-sensitivity of laterite clays stabilized by dynamic consolidation, the compression characteristics of compacted samples (unsaturated or saturated) are studied by laboratory tests. Furthermore, the shear characteristics of laterite samples (unsaturated and saturated) are also tested respectively by direct shear apparatus and triaxial apparatus. The studies show that the compression deformations of compacted specimens are very small, and after inundation of specimen, the deformation of specimens increase slightly. The stress-strain curves of undisturbed specimens in direct shear tests take on softening characteristics. The shear strengths of unsaturated specimens are greater than those of remolded specimens; it is shown that the inundation effect of laterite clays on its shear strength is obvious.