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A Study on Cementation Reaction Mechanism for Weathered Granite Soil and Microbial Mixtures

화강풍화토와 미생물 혼합물의 고결 반응 메카니즘

  • Oh, Jongshin (GL Construction Co. Ltd.) ;
  • Lee, Sungyeol (Depart of Rural & Biosystems Engieering, Chonnam National University) ;
  • Kim, Jinyung (Korea Institute of Civil Engineering and Building Technology) ;
  • Kwon, Sungjin (Depart of Rural & Biosystems Engieering, Chonnam National University) ;
  • Jung, Changsung (Depart of Rural & Biosystems Engieering, Chonnam National University) ;
  • Lee, Jaesoo (Depart of Rural & Biosystems Engieering, Chonnam National University) ;
  • Lee, Jeonghoon (Depart of Rural & Biosystems Engieering, Chonnam National University) ;
  • Ko, Hwabin (Depart of Rural & Biosystems Engieering, Chonnam National University) ;
  • Baek, Wonjin (Department of Rural & Biosystems Engineering, Chonnam National University)
  • Received : 2019.10.07
  • Accepted : 2019.10.31
  • Published : 2019.11.30

Abstract

The purpose of this study is to investigate the reaction mechanism of soil and bacteria solution by various mixing ratios. For this purpose, in order to understand the reaction mechanisms of microorganisms and weathered granite soil, the tests were carried out under various mixing ratios additives such as soil, bacteria solution, $Ca(OH)_2$ and fixture. The test results from this study are summarized as follows. Firstly, the reaction between the bacteria solution and fixture produced a precipitate called vaterite, a type of silicate and calcium carbonate. Secondly, as a result of SEM analysis, the resulting precipitates generated from the test results using the specimens with various mixing ratios except SW condition and the irregular spherical microscopic shapes were formed in the size of $150{\mu}m$ to $20{\mu}m$. In addition, it can be seen that the bacteria solution and the fixture reacted between the granules to form an adsorbent material layer on the surface, and the microorganisms had a biological solidifying effect when the pores are combined into hard particles. Finally, The XRD analysis of the sediment resulting from the reaction between the microorganism and the deposit control agent confirmed the presence of a type of calcium carbonate ($CaCO_3$) vaterite, which affects soil strength formation, as well as silicate($SiO_2$).

Keywords

References

  1. Ferris, F. G., G. L. Stehmeier, A. Kantzad, and F. M. Mourits, 1996. Badteriogenic mineral plugging. Journal of Canadian Petroleum Technology 358: 56-61.
  2. Jahns, T., 1996. Ammonium/urea-dependent generation of a protonelectrochmical potential and synthesis of ATP in Bacillus pasteurii. Journal of Bacteriology 178: 403-409. https://doi.org/10.1128/jb.178.2.403-409.1996
  3. Kim, D. H., M. Sagong, and K. H. Park. 2013. Improvement method of sand ground using an environmental friendly bio-grouting material. Journal of the Korean Society for Railway 16(6): 473-481. https://doi.org/10.7782/JKSR.2013.16.6.473
  4. Kim, J. B., 1985. Cementation. Korean Geotechnical Society 1(2): 95-96 (in Korean).
  5. Kim, T. Y., J. S. Park, and B. H. Lee, 2017. Characteristics of strength change of clay mixing eco-friendly soil binder and microorganism. Journal of Korean Geo-Environmental Society 18(10): 15-22. doi:10.4481/jkges.2017.18.10.15 (in Korean).
  6. Kitamura, M., H. Konno, A. Yasui, and H. Masuoka, 2001. Controlling factor and mechanism of reactive crystallization of calcium carbonate polymorphs from calcium hydroxide suspension. Journal of Crystal Growth 236: 323-332. https://doi.org/10.1016/S0022-0248(01)02082-6
  7. Langelin, H. R., A, Delannoy, J. Nicole, and J. Henion, 1984. Information chimie. Societe d'expansion techique et economigue, Paris 135: 252-253.
  8. Lee, J. H., 2013. A study on soil improvement by proliferation of microbes. Phd. Thesis, Department of Construction and Environment Engineering. Hanyang University (in Korean).
  9. Morsdrof, G., and H. Kaltwasser, 1972. Ammonium assimilation in proteus vulgaris, bacillus pasteurii, and sporosarcina urease. Archives of Microbiology 152: 125-131. https://doi.org/10.1007/BF00456089
  10. Park, K. H., and D. H. Kim, 2012. Verification of calcium carbonate by cementation of silt and sand using bacteria. Journal of Korean Society of Civil Engineering 28(6): 53-61 (in Korean).
  11. Park, K. H., and D. H. Kim, 2015. Effect of mixed ratios of ground improvement material using micro-organics on the strength of sands. Journal of Geosynthesics Society 14(2): 1-9. doi:10.12814/jkgss.2015.14.2.001 (in Korean).
  12. Park, S. S., S. G. Choi, and I. H. Nam, 2014. A study on cementation of sand using blast furnace slag and extreme microorganism. Journal of Korean Society of Civil Engineering 30(1): 93-101 (in Korean).
  13. Park, S. S., W. H. Kim, and J. C. Lee, 2011. Effect of biomineralization on the strength of cemented sands. Journal of Korean Society of Civil Engineering 27(5): 75-84 (in Korean).
  14. Tyler, B., 1978. Regulation of the assimilation of nitrogen compounds. Annual Review of Biochemistry 47: 1127-1162. https://doi.org/10.1146/annurev.bi.47.070178.005403
  15. Van Passen, L. A., R. Ghose, T. J. M. Van der Linden, W. R. L. Van der Star, and M. C. M. Loosdrecht, 2010. Quantifying biomediated groung improvement by ureolysis, Large-scale biogruot expriment. Journal of Geotechnical and Geoenvironmental Engineering 136(12): 1721-1728. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000382
  16. Whiffin, V. S., 2004. Microbial $CaCO_3$ precipitation for the production of biocement. Geomicrobiology Journal 2: 18-20.
  17. Yun, B. J., D. Y. Shin, and S. M. Han, 2003. Synthesis of vaterite poweders with a spherical shape by the precipitation method. Journal of the Korean Ceramic Society 40(12): 1208-1212 (in Korean). https://doi.org/10.4191/KCERS.2003.40.12.1208