Micro-feature-motivated numerical analysis of the coupled bio-chemo-hydro-mechanical behaviour in MICP

Abstract A coupled bio-chemo-hydro-mechanical model (BCHM) is developed to investigate the permeability reduction and stiffness improvement in soil by microbially induced calcite precipitation (MICP). Specifically, our based on geometric method a link between micro- macroscopic features generated. This allows capture material property changes caused variations microstructure during MICP. The was calibrated validated with experimental data from different literature sources. Besides, applied scenario simulation predict hydro-mechanical response of MICP-soil under continuous biochemical, hydraulic mechanical treatments. Our modelling study indicates that for reasonable prediction MICP both space time, BCHM processes influences microstructural aspects should be considered. Due its capability dynamic interactions flexible settings, this could potentially adopted as designing tool real applications.