In this study, a non-traditional and environment friendly chemical stabilizer, lignosulfonate has been used to stabilize high plastic clay and its effectiveness has been investigated through a series of static and cyclic loading tests. Unconfined compression tests were conducted for various percentages of lignosulphonate contents (0.5, 0.75, 1.5, 2.0, 2.5 and 3.0%) by weight of dry soil at curing periods of 5, 10 and 21 days. Shear strength and deformation characteristics of stabilized specimens were examined, corresponding to optimum content of lignosulfonate at which unconfined compressive strength was maximum, for different confining pressures and cyclic stress levels under unconsolidated undrained conditions. Test results indicated a significant increase in unconfined compressive strength and shear strength under static loading; whereas, reduction in axial strains and rate of permanent strain development, and increased resilient modulus under cyclic loading. In addition, SEM analysis has also been conducted to understand the microstructural changes occurring in the soil due to addition of lignosulfonate.

在这项研究中，一种非传统和环境友好的化学稳定剂木质素磺酸盐已被用于稳定高塑性粘土，并通过一系列静态和循环载荷试验研究了其有效性。在 5、10 和 21 天的固化期，按干土的重量计，对不同百分比的木质素磺酸盐含量（0.5、0.75、1.5、2.0、2.5 和 3.0%）进行了无侧限压缩试验。研究了稳定试样的剪切强度和变形特性，对应于无侧限抗压强度最大的木质素磺酸盐的最佳含量，在松散不排水条件下，对于不同的围压和循环应力水平。试验结果表明，静载荷下无侧限抗压强度和抗剪强度显着提高；然而，轴向应变和永久应变发展速率的降低，以及循环载荷下弹性模量的增加。此外，还进行了 SEM 分析以了解由于添加木质素磺酸盐而在土壤中发生的微观结构变化。