Recently, environmentally friendly soil reinforcement and stabilization techniques, used to reconstitute weak expansive soils, are on the rise, calling for an in-depth analysis of the consolidation projections on the engineering structures built on them. This study investigated one-dimensional consolidation coefficients by conducting a series of oedometer tests on expansive soils reinforced with basalt fibers of different lengths, stabilized with rice husk ash (RHA) as an environmentally friendly cement-reducing aggregate, and nominal dosages of cement in specified combinations. The correlation between the coefficients of consolidation (c_v), volume change (m_v), and permeability (k) and different basalt fiber lengths and RHA-cement contents in ultimate soil composite material was quantified using equations and graphical forms. Furthermore, scanning electron microscopic imagery (SEM) was conducted to examine the structural modifications within the reinforced and stabilized soil specimens upon one-dimensional consolidation. The results showed that basalt fiber-reinforced specimens, comprised of 5% RHA and 3% cement mixtures, showed the lowest one-dimensional consolidation coefficients with a notably greater reduction at high-stress states than the control specimen. Additionally, the coefficients of volume change (m_v) and permeability (k) decreased with the increased compactive effort, with a clear and significant reduction in the basalt fiber-reinforced stabilized soil composites. This study also proposed the best material combination scheme and analytical equations for evaluating the c_v, m_v, and k considering basalt fiber lengths at different pressure levels. The ultimate soil composites had superior properties, and thus, can be used as fill or subbase material for such engineering structures as embankments, pavements, and foundations.

近年来，用于重建软膨胀土的环保型土壤加固和稳定技术正在兴起，需要对在其上建造的工程结构的固结预测进行深入分析。本研究通过对不同长度的玄武岩纤维加筋、稻壳灰（RHA）作为环保减水泥骨料稳定的膨胀土进行一系列固结系数试验，以及规定的水泥标称用量，研究了一维固结系数。组合。固结系数 (c _v )、体积变化 (m _v)、渗透率 (k) 以及最终土壤复合材料中不同的玄武岩纤维长度和 RHA 水泥含量使用方程和图形形式进行量化。此外，还进行扫描电子显微镜图像（SEM）来检查一维固结后加固和稳定土壤样本内的结构变化。结果表明，由 5% RHA 和 3% 水泥混合物组成的玄武岩纤维增强试件表现出最低的一维固结系数，并且在高应力状态下的降低明显大于对照试件。此外，体积变化系数 (m _v）和渗透性（k）随着压实力的增加而降低，玄武岩纤维增强稳定土复合材料明显且显着降低。这项研究还提出了考虑不同压力水平下玄武岩纤维长度的最佳材料组合方案和分析方程，用于评估 c _v、m _{v和 k 。}最终的土壤复合材料具有优异的性能，因此可以用作路堤、路面和地基等工程结构的填充或底基层材料。