Consolidation and Permeability Characteristics of Liquefied Stabilized Soil Prepared by Various Slurry Densities

Permeability plays a pivotal role in geotechnical engineering, influencing the strength, deformation, and long-term performance of soil structures. Despite the growing interest in liquefied stabilized soil (LSS) as a sustainable backfill material, there is limited research on its use in projects with low permeability requirements. In order to investigate the consolidation and permeability properties of LSS, a series of 1-D consolidation and permeability tests were conducted on LSS with slurry densities of 1.216, 1.280, and 1.344 g/cm, a cement content of 100 kg/m, and fiber content of 0 and 10 kg/m. The consolidation and permeability characteristics of LSS with different slurry densities were compared, and the influence of adding fiber material to LSS was examined. The results indicate that the coefficient of consolidation of LSS decreases with increasing pressure. The coefficient of consolidation increases with the increase in the slurry density of LSS and is minimally affected by the amount of fiber. The coefficient of permeability of LSS is closely related to slurry density, the amount of added fiber material, and the initial void ratio of the specimen. The coefficient of permeability decreases with the increase in slurry density and fiber content. The average coefficient of permeability of LSS is 310 cm/s, which shows high permeability resistance.