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Title: State of the Art: MICP soil improvement and its application to liquefaction hazard mitigation
The field of biogeotechnics has emerged from the realization that processes intrinsic to natural systems can provide new approaches and inspiration through which the efficiency, sustainability, and functionality of geotechnical systems can be improved. Of these processes, microbially induced calcite precipitation (MICP) has advanced the most rapidly with the use of ureolytic microbial activity providing an opportunity to control the precipitation of calcium carbonate minerals throughout a soil matrix, thereby significantly improving soil engineering behaviors. The process affords increases in soil stiffness, strength, and dilatancy, with utility across a breadth of geotechnical and geoenvironmental applications, including mitigation of earthquake- induced soil liquefaction. This state of the art paper first covers: (1) enabling scientific processes, (2) treatment methods, and (3) monitoring techniques, which are broadly useful for different engineering applications. The second part focuses on how MICP can: (1) improve engineering behaviors at the element scale, (2) be modeled at the particle- and continuum-scales, (3) be applied at the field-scale, and (4) improve the resistance to liquefaction triggering and reduce the consequences when it does occur.  more » « less
Award ID(s):
1824647
PAR ID:
10382643
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ;
Editor(s):
Rahman, M.; Jaksa, M.
Date Published:
Journal Name:
Proceedings of the 20th ICSMGE-State of the Art and Invited Lectures
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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