Experimental study on soil impermeability based on chemical improvement method.

ABSTRACT: To address the challenge of high permeability in coastal silty sand foundation pits, which is prone to seepage failure, this study investigated the improvement effects of three chemical stabilizers-sodium silicate, calcium lignosulfonate, and sodium polyacrylate-on the permeability characteristics of undisturbed silty sand using a self-designed seepage test system. The results demonstrated that the cumulative erosion mass of the untreated soil increased exponentially over time, with an erosion rate as high as 89.39 g/min. In contrast, the cumulative erosion mass of the silty sand treated with any of the three chemical stabilizers exhibited a trend of initial increase followed by stabilization, and the erosion rates were all reduced to below 30 g/min. Notably, under the conditions of 4% dos

SUBMITTER: Sang H 

PROVIDER: S-EPMC12539693 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature