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Effects of Biocementation Method on Direct Shear Stress and Unconfined Compressive Stress of Sand
Objectives: To explore bio-mediated method to strengthening soil engineering parameters. Methods: Besides, issues such as environmental pollutions engineers invent new methods for improving mechanical soil properties. During the last decade bacteria cultivation technique has become one of the innovative methods which are more capable compared with other methods. Results: The new method named Microbial Induced Calcite Precipitation (MICP) provides a suitable condition in order to derive calcite between sand particles by adding cultivated bacteria and cementation solution to it. In fact, reaction between these solutions creates strong bonds which lead to strengthening physical properties of sand. Conclusion: The direct shear test and unconfined compression test results demonstrate non-homogeneity distribution of solutions in the sand samples.
Bio-Grout, Direct Shear Test, MICP, Sand Gradation, Unconfined Compression Test.
- Siddique R, Achal V, Reddy M, Mukherjee A. Improvement in the compressive strength of cement mortar by the use of a microorganism-bacillus megaterium. United Kingdom: Taylor & Francis; 2008 Sep.
- Raijiwala DB, Hingwe PS, Babhor VK. Bacterial concrete-an ideal concrete for historical structures. London: CRC Press, Taylor & Francis Group; 2009.
- DeMuynck W, Debrouwer D, DeBelie N, Verstraete W. Bacterial carbonate precipitation improves the durability of cementitious materials. Cement and Concrete Research. 2008 Jul; 38(7):1005-14.
- Achal V, Pan X, Ozyurt N. Improved strength and durability of fly ash amended concrete by microbial calcite precipitation. Ecological Engineering. 2011 Apr; 37(4):554-9.
- Sarda D, Choonia H, Sarode D, Lele S. Bio-calcification by Bacillus pasteurii urease: A novel application. Journal of Industrial Microbiology and Biotechnology. 2009 Aug; 36(8):1111–5.
- Nemati M, Voordouw G. Modification of porous media permeability, using calcium carbonate produced enzymatically in situ. Enzyme Microbial Technology. 2003 Oct; 33(5):635–42.
- Martinez BC, Barkouki TH, DeJong JT, Ginn TR. Upscaling of microbial induced calcite precipitation in 0.5 m columns experimental and modeling results. Geo-Frontiers. 2011 Mar:4049-59.
- DeJong JT, Fritzges MB, Nusslein K. Microbially induced cementation to control sand response to undrained shear. Journal of Geotechnical and Geo Environmental Engineering. 2006 Nov; 132(11):1381-92.
- Whiffin VS, Van Paassen LA, Harkes MP. Microbial carbonate precipitation as a soil improvement technique. Geomicrobiology Journal. 2007 Aug; 24(5):417-23.
- Ivanov V, Chu J. Applications of microorganisms to geotechnical engineering for bioclogging and biocementation of soil in situ. Reviews in Environmental Science and Bio/Technology. 2008 Jun; 7(2):139-53.
- Montoya BM, Dejong JT. Healing of biological induced cemented sands. Geotechnique Letters. 2013 Sep; 3(3):147-51.
- Dawoud O, Chen CY, Soga K. Microbial Induced Calcite Precipitation (MICP) using surfactants. Geo-Congress Technical Papers; 2014 Feb. p. 1635-43.
- Stress-Strain Behavior of Sands Cemented by Microbially Induced Calcite Precipitation. Available from: http://ascelibrary.org/doi/abs/10.1061/(ASCE)GT.1943-5606.0001302 14. Annadurai A, Ravichandran A. flexural behavior of hybrid fiber reinforced high strength concrete. Indian Journal of Science and Technology. 2016 Jan; 9(1):1-5.
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