1. Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, China 2. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore 3. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
Microbial geotechnology or biogeotechnology is a new branch of geotechnical engineering. It involves the use of microbiology for traditional geotechnical applications. Many new innovative soil improvement methods have been developed in recent years based on this approach. A proper understanding of the various approaches and the performances of different methods can help researchers and engineers to develop the most appropriate geotechnical solutions. At present, most of the methods can be categorized into three major types, biocementation, bioclogging, and biogas desaturation. Similarities and differences of different approaches and their potential applications are reviewed. Factors affecting the different processes are also discussed. Examples of up-scaled model tests and pilot trials are presented to show the emerging applications. The challenges and problems of biogeotechnology are also discussed.
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