Experimental Study Of Improving The Physical Properties Of Peat Soil Using Sand And Bio-Grouting Techniques With The Assistance Of Bacillus Subtilis Bacteria
DOI:
https://doi.org/10.25299/jgeet.2023.8.1.13464Keywords:
Bio-Grouting, Bacillus Subtilis, CaCL₂, sand, Stabilization, Physical Properties, ureaAbstract
Peat soil was categorized as soft soil, which means that the soil is in bad condition and problematic when construction was built on it. It was necessary to increase the carrying capacity of peat soils, one of which is chemical stabilization of the soil, by adding additives that can react with the soil and using new environmentally friendly methods.
In this study, samples of peat soil were taken from Buana Makmur Village km55, Dayun District, Siak Regency. The stabilizing agent used was sand as much as 5% by weight of dry soil, Bacillus Subtilis bacteria obtained from the Agriculture Laboratory of the Islamic University of Riau, and also CaCL₂ and Urea. The method for stabilizing the physical properties of peat soil in this study is the Bio-Grouting method, testing the physical properties of peat soil follows the procedures of ASTM (American Society For Testing And Materials) and SNI 1965-2008 for testing methods for determining water content for soil and rock in the laboratory. SNI 1964-2008 test method for soil specific gravity, SNI 8460-2017 geotechnical design requirements, SK SNI -04-05-1989-F fine sand used for construction, SNI-02-2801-1998 urea standard. To test the physical properties was carried out by providing variations in the mixing of bacterial cementation solutions with levels of 0% (without treatment), 5%, 10%, 15%, 20%, and 25% and then allowed to stand for 14 days using a tightly closed plastic container.
The results of testing the physical properties of peat soil found that the peat soil was included in the original soil type with water content = 407.45% and specific gravity (Gs) = 1.30gr, while from the physical properties tests carried out the highest water content occurred in the addition of bacterial cementation solution 10% = 177.2% and the lowest specific gravity occurs when the bacterial cementation solution is added 10% = 1.27gr.
Downloads
References
Boylan, N. and Long, M., 2014. Evaluation of peat strength for stability assessments. Proceedings of the Institution of Civil Engineers-Geotechnical Engineering, 167(5), pp.421-430.
Hamed Khodadadi, T., Kavazanjian, E., van Paassen, L. and DeJong, J., 2017. Bio-grout materials: A review. Grouting 2017, pp.1-12.
Harianto, T., Hamzah, S., Nur, S.H., Abdurrahman, M.A., Latief, R.U., Fadliah, I. and Walenna, A., 2013, September. Biogrouting stabilization on marine sandy clay soil. In Proceedings of the 7th International Conference on Asian and Pacific Coasts, Indonesia (pp. 848-852).
Inagaki, Y., Tsukamoto, M., Mori, H., Sasaki, T., Soga, K., Qabany, A.A. and Hata, T., 2011. The influence of injection conditions and soil types on soil improvement by microbial functions. In Geo-Frontiers 2011: Advances in Geotechnical Engineering (pp. 4021-4030).
Kim, D. and Park, K., 2013. Injection effect of bio-grout for soft ground. Advanced Science Letters, 19(2), pp.468-472.
Kim, D. and Park, K., 2017. Evaluation of the grouting in the sandy ground using bio injection material. Geomech. Eng, 12(5), pp.739-752.
Lin, H., Suleiman, M.T., Jabbour, H.M. and Brown, D.G., 2018. Bio-grouting to enhance axial pull-out response of pervious concrete ground improvement piles. Canadian Geotechnical Journal, 55(1), pp.119-130.
Minto, J.M., Hingerl, F.F., Benson, S.M. and Lunn, R.J., 2017. X-ray CT and multiphase flow characterization of a ‘bio-grouted’sandstone core: The effect of dissolution on seal longevity. International Journal of Greenhouse Gas Control, 64, pp.152-162.
Moayedi, H., Kazemian, S. and Vakili, A.H., 2013. The Rheology Properties of Peat Treated with Sodium Silicate System Grouts. In Forensic Engineering 2012: Gateway to a Safer Tomorrow (pp. 700-707).
Moayedi, H., Nazir, R., Kazemian, S. and Huat, B.K., 2014. Microstructure analysis of electrokinetically stabilized peat. Measurement, 48, pp.187-194.
Suryadi, A., Islami, F.U., Kausarian, H. and Putra, D.B.E., 2020. Geophysical Survey on Open Dumping Landfill for Monitoring Spread of Leachate: A Case Study in Pekanbaru, Riau, Indonesia. Journal of Geoscience, Engineering, Environment, and Technology, 5(2), pp.104-107.
Suryadi, A., Putra, D.B.E., Kausarian, H., Sholeh, A.R., Tauladani, M. and Adriyadhi, A., 2022. Potential Aquifer Exploration using Electrical Resistivity Imaging at Rumbio Jaya, Kampar, Riau. Aceh International Journal of Science and Technology, 11(1), pp.29-37.
Syarif, F. and Setiawan, D.M., 2021, July. Implementation of Microbially Induce Calcite Precipitation (MICP) by Bacillus Subtilis and Adding Sand in Repairing Shear Strength Parameters of Peat. In International Conference on Rehabilitation and Maintenance in Civil Engineering (pp. 267-276). Singapore: Springer Nature Singapore.
Syarif, F., Hardianto, M.F. and Davino, G.M., 2019, October. Microbially induce calcite precipitation as bio grouting by bacillus subtilis on its shear strength parameter effects on organic soil (peat) from Siak Regency Riau Province Indonesia. In IOP Conference Series: Materials Science and Engineering (Vol. 615, No. 1, p. 012045). IOP Publishing.
Downloads
Published
Issue
Section
License
Copyright @2019. This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License which permits unrestricted use, distribution, and reproduction in any medium. Copyrights of all materials published in JGEET are freely available without charge to users or / institution. Users are allowed to read, download, copy, distribute, search, or link to full-text articles in this journal without asking by giving appropriate credit, provide a link to the license, and indicate if changes were made. All of the remix, transform, or build upon the material must distribute the contributions under the same license as the original.
