Abstract
Soil with low bearing capacity is not able to support the construction on it so that a soil improvement method is needed to improve the soil structure. Soft soil stabilization has been carried out with various stabilizers, namely lime, cement, a combination of cement and fly ash, asphalt, and others, but this stabilizing agent is not environmentally friendly. Currently alternative environmentally friendly bio-stabilization is growing with the use of microorganisms (bacteria). The purpose of this study was to obtain the characteristics of the soft soil stabilized with bacteria by testing unconfined compression strength (UCS) and the direct shear test experimentally. The bacteria used were 3 days cultured bacillus subtilis bacteria with a composition of 4, 6, and 8% at optimum density conditions. The curing time was carried out for 7, 14, and 28 days after the preparation of the test object. The test results showed that the optimum bacteria content for stabilizing soft soil based on the test was obtained at 6%. At the curing time of 28 days, the unconfined compression strength value was 1073.83 kPa, and the elastic modulus was 368.88 kPa or an increase of 527% when compared to soil without bacteria stabilization. The soil shear stress was obtained at 194.66 kPa, an increase of 400% when compared to soil without bacteria stabilization.
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References
Harianto T et al (2020) Biogrouting stabilization on marine sandy clay soil. In: Proceedings of the 7th international conference on Asian and Pacific coasts, APAC 2013, pp 848–852
Harianto T, Hayashi S, Du YJ, Suetsugu D (2008) Experimental investigation on strength and mechanical behavior of compacted soil-fiber mixtures. In: Geosynthetics in civil and environmental engineering: geosynthetics Asia 2008 proceedings of the 4th Asian regional conference on geosynthetics, pp 392–397
Omoregie AI, Palombo EA, Nissom PM (2021) Bioprecipitation of calcium carbonate mediated by ureolysis: a review. Environ Eng Res 26(6):0–2
Hasriana LS, Harianto T, Djide MN (2018) Bearing capacity improvement of soft soil subgrade layer with Bio Stabilized Bacillus subtilis. MATEC Web Conf 181:0–5
DeJong JT, Fritzges MB, Nüsslein K (2006) Microbially induced cementation to control sand response to undrained shear. J Geotech Geoenviron Eng 132(11):1381–1392
DeJong JT, Mortensen BM, Martinez BC, Nelson DC (2010) Bio-mediated soil improvement. Ecol Eng 36(2):197–210
Kim G, Kim J, Youn H (2018) Effect of temperature, pH, and reaction duration on microbially induced calcite precipitation. Appl Sci 8(8):1277
Gowthaman S, Mitsuyama S, Nakashima K, Komatsu M, Kawasaki S (2019) Microbial induced slope surface stabilization using industrial-grade chemicals: a preliminary laboratory study. Int J GEOMATE 17(60):110–116
Mujah D, Shahin M, Cheng L (2016) Performance of biocemented sand under various environmental conditions. COBRAMSEG
Omoregie AI, Palombo EA, Ong DEL, Nissom PM (2019) Biocementation of sand by Sporosarcina pasteurii strain and technical-grade cementation reagents through surface percolation treatment method. Constr Build Mater 228:116828
Liu L, Liu H, Stuedlein AW, Evans TM, Xiao Y (2019) Strength, stiffness, and microstructure characteristics of biocemented calcareous sand. Can Geotech J 56(10):1502–1513
Mahawish A, Bouazza A, Gates WP (2019) Unconfined compressive strength and visualization of the microstructure of coarse sand subjected to different biocementation levels. J Geotech Geoenviron Eng 145(8):04019033
Keykha HA, Huat BBK, Asadi A (2014) Electrokinetic stabilization of soft soil using carbonate-producing bacteria. Geotech Geol Eng 32(4):739–747
Sharma A, Ramkrishnan R (2016) Study on effect of Microbial Induced Calcite Precipitates on strength of fine grained soils. Perspect Sci 8:198–202
Al Imran M, Gowthaman S, Nakashima K, Kawasaki S (2020) The influence of the addition of plant-based natural fibers (Jute) on biocemented sand using MICP method. Materials 13(18):4198
Indriani AM, Harianto T, Djamaluddin AR, Arsyad A (2021) Bioremediation of coal contaminated soil. Int J GEOMATE 21(84):76–84
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Rokhman, Harianto, T., Muhiddin, A.B., Arsyad, d.A. (2024). Characteristics of Soft Soil Stabilization with Bacillus subtilis Bacteria on Unconfined Compression Strength and Shear Stress of Soils. In: Hazarika, H., Haigh, S.K., Chaudhary, B., Murai, M., Manandhar, S. (eds) Sustainable Construction Resources in Geotechnical Engineering. IC-CREST 2023. Lecture Notes in Civil Engineering, vol 448. Springer, Singapore. https://doi.org/10.1007/978-981-99-9227-0_34
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DOI: https://doi.org/10.1007/978-981-99-9227-0_34
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