Bio-stabilisation of granite residual soil using indigenous microorganisms.

ABSTRACT: Granite residual soil exhibits inferior mechanical properties, which may lead to slope instability and embankment settlement. Microbial solidification technology offers an environmentally sustainable and highly effective approach for the improvement of such soils. To enhance the strength properties of granite residual soil in the Hanzhong region, three urease-producing Bacillus species, including Bacillus velezensis, Bacillus subtilis, and Bacillus tequilensis, are extracted from the soil in the same area, and solidification improvement experiments are conducted by changing the concentration of the cementing solution. The experimental results indicate that all three bacterial strains can substantially enhance the shear strength of soil. The optimal improvement effect for each strain is obs

SUBMITTER: Wang Y 

PROVIDER: S-EPMC12599943 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature