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Zhang Aoxi

Séminaire / Équipe Géomécanique

On December 8, 2023

Investigation into the mechanical behaviour of bio-cemented sands using the discrete element method

Bio-cementation soil improvement methods are alternatives to invasive, carbon-intensive stabilisation techniques. These methods, which include microbially induced carbonate precipitation (MICP) and enzyme induced carbonate precipitation (EICP), use biogeochemical processes to drive carbonate precipitation and cement soil grains, thereby improving the material mechanical performance. Sands treated by bio-cementation methods typically exhibit an improvement in strength and stiffness, yet often with variable magnitudes, even at equal calcium carbonate contents. The variation in the mechanical performance of bio-cemented sands impedes the practical applications of MICP/ EICP, while it is poorly understood. In this presentation, we are going to understand the mechanical behaviour of bio-cemented sands, particularly the uncertainty or variation of the mechanical performance, from the microscopic point of view by using the discrete element method (DEM).


On December 8, 2023
Complément date



Complément lieu

Galilée 010

Liège Université


Submitted on November 22, 2023

Updated on January 31, 2024