Bio-mediated soil improvement: The way forward |
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| Authors: | Ning-Jun Jiang Chao-Sheng Tang Toshiro Hata Benoît Courcelles Osama Dawoud Devendra N Singh |
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| Institution: | 1. Department of Civil and Environmental Engineering, University of Hawaii at Manoa, Honolulu, HI, USA;2. School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu, China;3. Department of Civil and Environmental Engineering, Hiroshima University, Hiroshima, Japan;4. Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, Montreal, QC, Canada;5. Department of Civil Engineering, Istinye University, Istanbul, Turkey;6. Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, India |
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| Abstract: | Bio-mediated soil improvement involves the usage of microbes to improve soil engineering performance through a series of bio-geochemical processes. In particular, Microbially Induced Calcite Precipitation (MICP), a ubiquitous bio-geochemical process that occurs in soil and results in permanent inorganic cementation between soil grains, has received the greatest research focus. While substantial progress has been made to develop MICP as a mainstream soil improvement technique, we still need to: (a) improve our understanding of the fundamental microbial, chemical and flow processes involved; (b) achieve multi-functionality by coupling engineering performance enhancement with ecological, environmental and carbon footprint benefits; and (c) maintain ecological balance and environmental friendliness, avoid long-term deterioration and lower the energy demand. |
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| Keywords: | microbially induced calcite precipitation soil improvement fundamentals multi-functionality sustainability |
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