Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO3 Precipitation (MICP)

Microbially induced calcium carbonate precipitation (MICP) uses the metabolic function of microbes to carry out biochemical reactions with other substances in environment. Through controlled growth inorganic minerals, soil particles are cemented and pores filled solidify reduce its permeability. Thus, application this technology was foreseen geotechnical engineering environment (building antiseepage, contaminated restoration, slope erosion, sand liquefaction). In review article, based on current research findings, urea hydrolysis cementation mechanism MICP briefly described. The influences factors such as enzyme activity, solution concentration, pH, temperature, grouting method, particle size MICP-treated discussed. properties soils evaluated, for instance, strength, stiffness, liquefaction resistance, permeability, durability. applications ground improvement, seepage control, foundation erosion fixation heavy metals summarized. Finally, future directions development elucidated provide a reference guidance promotion field.