Parameters Effects Evaluation of Microbial Strengthening of Sandy Soils in Mixing Experiments Using Taguchi Methodology |
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| Authors: | Masoud Mirmohammad sadeghi Amir Reza Modarresnia Farhad Shafiei |
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| Institution: | 1. Department of Civil Engineering, Isfahan Higher Education and Research Institute (IHEARI), Department of Water and Natural Environment, Laboratory of Soil Mechanics, Isfahan, Iranmsadeghi@ieht.ac.ir;3. Azad University of Tehran, Branch of Science and Research, Tehran, Iran;4. Research Assistant &5. Lab Staff, Isfahan Higher Education and Research Institute (IHEARI), Department of Water and Natural Environment, Laboratory of Microbiology, Isfahan, Iran |
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| Abstract: | The effects of experimental parameters including soil type, curing duration, inoculum size, and biomass and nutrients concentration on soil strengthening due to calcite precipitation by Sporosarcina pasteurii PTCC 1645 were investigated. The laboratory-scale mixing experiments on remolded samples were designed by the Taguchi method. Soil type proved to be the most incorporating factor, followed by curing time and nutrient concentration. The main effect and the interactions of the parameters were presented and the optimal conditions were obtained. This suggests the importance of local conditions including soil type on any future large-scale, in situ application. |
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| Keywords: | microbially induced carbonate precipitation mixing test operational parameters effect optimization soil strengthening Taguchi method unconfined compressive strength (UCS) |
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