Drained Response of Microbially Induced Calcite Precipitation (MICP) Treated Sand Under Various Treatment Conditions
MICP is a novel ground improvement method that harnesses the biogeochemical reactions to precipitate calcium carbonate in the soils.
The objectives of this study are to:
- İnvestigate the drained response of MICP treated sands by performing drained triaxial test under 100, 200 and 400 kPa effective stresses
- Enhance the geomechanical properties (stiffness, shear strength, dilatancy) of sands
- İnvestigate the effect of treatment concentration and number on mechanical behavior
- Outline how microscale changes affect the macroscale behavior
Drained Response of Microbially Induced Calcite Precipitation (MICP) Treated Sand Under Various Treatment Conditions
The MICP treatments:
- İmprove stiffness, shear strength, dilatancy of sands
- Change the material behavior from ductile to brittle dueto interparticle binding and grain coating CaCO3 crystals.
Under the same:
- Chemical concentration, increasing the injection number leads to an increase in peak shear strength.
- Treatment number, increasing the chemical concentration increases the peak shear strength.