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International Journal of Geosynthetics and Ground Engineering

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01-12-2021 | Original Paper

Improvement of Strength Behaviour of Residual Soil via Enzymatically Induced Calcite Precipitation

Authors: Muttaqa Uba Zango, Khairul Anuar Kassim, Kamarudin Ahmad, Abubakar Sadiq Muhammed

Published in: International Journal of Geosynthetics and Ground Engineering | Issue 4/2021

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Abstract

Enzymatic induced calcium carbonate precipitation (EICP) is a biomediated soil improvement technique that utilizes free enzyme to produce a biocement material. This research investigated by performing test tube test the effect of varying urea-CaCl₂ concentrations from 0.25 to 1.25 M on the mass and efficiency of calcium carbonate precipitation formed via EICP technique. The study also evaluated, by conducting UCS test, the strengths of EICP-treated residual soil prepared at various concentrations of cementation solution and different moulding water contents ( – 2% to + 4% OMC). The test tube test results showed that the mass of calcium carbonate precipitation increased with an increment in the urea-CaCl₂ concentrations from 0.25 to 1.00 M. Maximum mass of calcium carbonate precipitation of 1.577 g, 1.603 g and 1.603 g were obtained due to 1.00 M urea-CaCl₂ at 3, 7 and 14 days, respectively. The effect of curing period beyond 3 days were found to be insignificant on the amount of CaCO₃ precipitations. The strength of the EICP-treated soil increased with increasing concentrations of urea-CaCl₂ and decreased with an increment in moulding water content. The maximum strengths values at all moulding water contents were obtained at 1.00 M urea-CaCl₂. The highest shear strength of 728.5 kPa was determined at -2% OMC when 1.00 M was used as urea-CaCl₂ and 4.33% calcium carbonate content was yielded. It was determined that there is a strong linear relationship (R² = 0.8696) between UCS and calcium carbonate content in the treated soil. The amount of calcium carbonate content formed was found to decrease with an increase in mixing water content from 2% dry to 4% wet of optimum moisture content. Finally, the results from the field emission scanning electron microscope (FESEM) and energy dispersive X-ray (EDX) analyses confirmed the formation of calcite crystals in the EICP treated soil.

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DeJong JT, Mortensen BM, Martinez BC, Nelson DC (2010) Bio-mediated soil improvement. Ecol Eng 36:197–210CrossRef

R.A.N. Dilrukshi SK (2016) Plant-derived urease induced sand cementation used in geotechnical engineering applications. Int. Conf. Geomech. Geo-energy Geo-resources

Achal V, Mukherjee A, Kumari D, Zhang Q (2015) Biomineralization for sustainable construction - A review of processes and applications. Earth Sci Rev 148:1–17. https://doi.org/10.1016/j.earscirev.2015.05.008CrossRef

Badiee H, Sabermahani M, Tabandeh F, Saeedi Javadi A (2019) Application of an indigenous bacterium in comparison with Sporosarcina pasteurii for improvement of fine granular soil. Int J Environ Sci Technol 16:8389–8400. https://doi.org/10.1007/s13762-019-02292-9CrossRef

Xiao P, Liu H, Stuedlein AW, Evans TM, Xiao Y (2019) Effect of relative density and biocementation on cyclic response of calcareous sand. Can Geotech J 56:1849–1862. https://cdnsciencepub.com/doi/https://doi.org/10.1139/cgj-2018-0573

Zamani A, Montoya BM (2019) Undrained cyclic response of silty sands improved by microbial induced calcium carbonate precipitation. Soil Dyn Earthq Eng 120:436–448. https://doi.org/10.1016/j.soildyn.2019.01.010CrossRef

Khoubani A, Evans TM, Montoya BM (2018) The effect of grain size and shape on mechanical behavior of MICP treated sand II: numerical study. Proc Int Symp Bio-mediated Bio-inspired Geotech

Zhang Y, Guo HX, Cheng XH (2015) Role of calcium sources in the strength and microstructure of microbial mortar. Constr Build Mater 77:160–167. https://doi.org/10.1016/j.conbuildmat.2014.12.040CrossRef

Keykha HA, Asadi A, Zareian M (2017) Environmental factors affecting the compressive strength of microbiologically induced calcite precipitation-treated soil. Geomicrobiol J 34:889–894. https://doi.org/10.1080/01490451.2017.1291772CrossRef

10.

Osinubi KJ, Eberemu AO, Ijimdiya TS, Yohanna P (2020) Interaction of landfill leachate with compacted lateritic soil treated with bacillus coagulans using microbial-induced calcite precipitation approach. J Hazardous Toxic Radioact Waste 24:1–9. https://ascelibrary.org/doi/https://doi.org/10.1061/%28ASCE%29HZ.2153-5515.0000465

11.

Kakelar MM, Ebrahimi S (2016) Up-scaling application of microbial carbonate precipitation: optimization of urease production using response surface methodology and injection modification. Int J Environ Sci Technol 13:2619–2628. https://link.springer.com/article/https://doi.org/10.1007/s13762-016-1070-8

12.

Xiao Y, He X, Evans TM, Stuedlein AW, Liu H (2019) Unconfined compressive and splitting tensile strength of basalt fiber-reinforced biocemented sand. J Geotech Geoenvironm Eng. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002108CrossRef

13.

Xiao Y, Asce M, Wang Y, Desai CS, Asce DM (2019) Strength and deformation responses of biocemented sands using a temperature-controlled method. Int J Geomech 19:1–10. https://ascelibrary.org/doi/abs/https://doi.org/10.1061/%28ASCE%29GM.1943-5622.0001497

14.

Terzis D, Laloui L (2019) A decade of progress and turning points in the understanding of bio-improved soils: a review. Geomech Energy Environ. https://doi.org/10.1016/j.gete.2019.03.001CrossRef

15.

Gomez MG, Anderson CM, Graddy CMR, DeJong JT, Nelson DC, Ginn TR (2017) Large-scale comparison of bioaugmentation and biostimulation approaches for biocementation of sands. J Geotech Geoenvironm Eng 143:04016124. http://ascelibrary.org/doi/https://doi.org/10.1061/%28ASCE%29GT.1943-5606.0001640

16.

Kalantari F, Kahani M (2018) Optimization of the biological soil improvement procedure. Int J Environ Sci Technol. https://doi.org/10.1007/s13762-018-1821-9CrossRef

17.

Moosazadeh R, Kalantary FTF, Fallah NGH, Lotfabad TB (2018) Mitigation of the liquefaction potential of soil by Ca - carbonate precipitation induced by indigenous urease - producing Staphylococcus. Int J Environ Sci Technol. https://doi.org/10.1007/s13762-018-1788-6CrossRef

18.

Xiao Y, Stuedlein AW, Ran J, Evans TM, Cheng L, Liu H, Van Paassen LA, Chu J (2019) Effect of particle shape on strength and stiffness of biocemented glass beads. J Geotech Geoenvironm Eng 145:1–9. https://freepaper.me/downloads/abstract/https://doi.org/10.1061/(ASCE)GT.1943-5606.0002165

19.

Khodadadi TH, Kavazanjian E, Bilsel H (2017) Mineralogy of calcium carbonate in MICP-treated soil using soaking and injection treatment methods. In: Geotech. Front. pp 195–201. https://ascelibrary.org/doi/https://doi.org/10.1061/9780784480441.021

20.

Achal V, Mukherjee A (2015) A review of microbial precipitation for sustainable construction. Constr Build Mater 93:1224–1235. https://doi.org/10.1016/j.conbuildmat.2015.04.051CrossRef

21.

Maleki M, Ebrahimi S, Asadzadeh F, Emami Tabrizi M (2016) Performance of microbial-induced carbonate precipitation on wind erosion control of sandy soil. Int J Environ Sci Technol 13:937–944. https://link.springer.com/article/https://doi.org/10.1007/s13762-015-0921-z

22.

Almajed A, Tirkolaei H., Kavazanjian E (2018) Baseline investigation on enzyme-induced calcium carbonate precipitation. J Geotech Geoenviron Eng 144:04018081–1–04018081–11. https://ascelibrary.org/doi/full/https://doi.org/10.1061/%28ASCE%29GT.1943-5606.0001973

23.

Xiao JZ, Wei YQ, Cai H, Wang ZW, Yang T, Wang QH, Wu SF (2020) Microbial-induced carbonate precipitation for strengthening soft clay. Adv Mater Sci Eng. https://doi.org/10.1155/2020/8140724CrossRef

24.

Sharma A, R. R (2016) Study on effect of microbial induced calcite precipitates on strength of fine grained soils. Perspect Sci 8:198–202. http://linkinghub.elsevier.com/retrieve/pii/S2213020916300477

25.

Ting H, Kassim KA, Umar M, Uba Zango M, Muhammed AS, Ahmad K (2019) Microbially induced carbonate precipitations to improve residual soil at various temperatures. Bull Geol Soc Malaysia 67:75–81. http://www.gsm.org.my/products/702001-101782-PDF.pdf

26.

Putra H, Yasuhara H, Kinoshita N, Hirata A (2017) Optimization of enzyme-mediated calcite precipitation as a soil-improvement technique: The effect of aragonite and gypsum on the mechanical properties of treated sand. Crystals 7:2–15. http://www.mdpi.com/2073-4352/7/2/59

27.

Chandra A, Ravi K (2018) Application of enzyme induced carbonate precipitation (EICP) to improve the shear strength of different type of soils. In: Indian Geotech Conf IGC-2018. pp 1–8. https://link.springer.com/chapter/https://doi.org/10.1007/978-981-15-6237-2_52

28.

Yasuhara H, Neupane D, Hayashi K, Okamura M (2012) Experiments and predictions of physical properties of sand cemented by enzymatically-induced carbonate precipitation. Soils Found 52:539–549. https://doi.org/10.1016/j.sandf.2012.05.011CrossRef

29.

Carmona JPSF, Oliveira PJV, Lemos LJL (2016) Biostabilization of a sandy soil using enzymatic calcium carbonate precipitation. Procedia Eng 143:1301–1308. https://doi.org/10.1016/j.proeng.2016.06.144CrossRef

30.

Nam IH, Chon CM, Jung KY, Choi SG, Choi H, Park SS (2015) Calcite precipitation by ureolytic plant (Canavalia ensiformis) extracts as effective biomaterials. KSCE J Civ Eng 19:1620–1625. https://link.springer.com/article/https://doi.org/10.1007/s12205-014-0558-3

31.

Kavazanjian E, Hamdan N (2015) Enzyme Induced Carbonate Precipitation (EICP) Columns for Ground Improvement. In: Ifcee 2015. pp 2252–2261. http://ascelibrary.org/doi/https://doi.org/10.1061/9780784479087.209

32.

Nemati M, Voordouw G (2003) Modification of porous media permeability, using calcium carbonate produced enzymatically in situ. Enzyme Microb Technol 33:635–642. https://www.sciencedirect.com/science/article/pii/S0141022903001911

33.

Putra H, Yasuhara H, Kinoshita N (2017) Optimum condition for the application of enzyme-mediated calcite precipitation technique as soil improvement technique. Int J Adv Sci Eng Inf Technol 7:2145. http://ijaseit.insightsociety.org/index.php?option=com_content&view=article&id=9&Itemid=1&article_id=3425

34.

Oliveira PJV, Freitas LD, Carmona JPSF (2017) Effect of soil type on the enzymatic calcium carbonate precipitation process used for soil improvement. J Mater Civ Eng 29:1–7. https://ascelibrary.org/doi/full/https://doi.org/10.1061/(ASCE)MT.1943-5533.0001804

35.

Almajed A, Tirkolaei HK, Kavazanjian E, Hamdan N (2019) Enzyme induced biocementated sand with high strength at low carbonate content. Sci Rep 9:1–7. https://doi.org/10.1038/s41598-018-38361-1CrossRef

36.

Zhao Z, Hamdan N, Shen L, Nan H, Almajed A, Kavazanjian E, He X (2016) Biomimetic hydrogel composites for soil stabilization and contaminant mitigation Biomimetic hydrogel composites for soil stabilization and contaminant mitigation. Environ Sci Technol 50:12401–12410. https://pubs.acs.org/doi/https://doi.org/10.1021/acs.est.6b01285

37.

Carmona JPSF, Oliveira PJV, Lemos LJL, Pedro AMG (2017) Improvement of a sandy soil by enzymatic calcium carbonate precipitation. Geotech Eng Proc Inst Civ Eng 171:1–13. https://www.icevirtuallibrary.com/doi/https://doi.org/10.1680/jgeen.16.00138

38.

Neupane D, Yasuhara H, Kinoshita N, Unno T (2013) Applicability of enzymatic calcium carbonate precipitation as a soil-strengthening technique. ASCE J Geotech Geoenvironm Eng 139:2201–2211. http://ascelibrary.org/doi/abs/https://doi.org/10.1061/(ASCE)GT.1943-5606.0000959

39.

Zhao Q, Li L, Li C, Zhang H, Amini F (2014) A full contact flexible mold for preparing samples based on microbial-induced calcite precipitation technology. Geotech Test J 37:917–921CrossRef

40.

Song JY, Sim Y, Jang J, Hong W-T, Yun TS (2019) Near-surface soil stabilization by enzyme-induced carbonate precipitation for fugitive dust suppression. Acta Geotech. https://doi.org/10.1007/s11440-019-00881-zCrossRef

41.

Almajed A, Tirkolaei HK, Kavazanjian E (2018) Baseline investigation on enzyme-induced calcium carbonate precipitation. J Geotech Geoenvironmental Eng 144:1–11. https://ascelibrary.org/doi/full/https://doi.org/10.1061/%28ASCE%29GT.1943-5606.0001973

42.

Ghani AA, Hazad FI, Jamil A, et al (2014) Permian ultrafelsic a-type granite from Besar Islands group, Johor, peninsular Malaysia. J Earth Syst Sci 123:1857–1878. https://link.springer.com/article/https://doi.org/10.1007/s12040-014-0501-5

43.

BS 1377–2 (1990) British Standard Methods of test for Soils for civil engineering purposes. Part 2: Classification tests. Br Stand 1–49

44.

BS 1377–4 (1990) British Standard Methods of test for Soils for civil engineering purposes. Part 4: Compaction-related tests. Br Stand 1–53

45.

Bell FG (1993) Engineering Geology, Second. Butterworth-Heinemann, Elservier, Burlington, MA, USA

46.

Johnathan RM (2018) Application of EICP for soil improvement for finer-grained soil. https://doi.org/10.1017/CBO9781107415324.004

47.

BS 1377 - 7 (1990) British standard methods of test for soils for civil engineering purposes - Part 7: Shear strength tests (total stress)

48.

Choi S-G, Park S-S, Wu S, Chu J (2011) Methods for calcium carbonate content measurement of biocemented soils. J Mater Civ Eng 29:06017015. http://ascelibrary.org/doi/https://doi.org/10.1061/%28ASCE%29MT.1943-5533.0002064

49.

Zamani A, Montoya BM (2017) Shearing and hydraulic behavior of MICP treated silty sand. In: Geotech Front. 2017. pp 290–299 http://ascelibrary.org/doi/abs/10.1061/9780784480489.029%0Ahttp://ascelibrary.org/action/cookieAbsent%0Ahttp://files/345/cookieAbsent.html

50.

Mortensen BM, Haber MJ, Dejong JT, Caslake LF, Nelson DC (2011) Effects of environmental factors on microbial induced calcium carbonate precipitation. J Appl Microbiol 111:338–349. https://sfamjournals.onlinelibrary.wiley.com/doi/full/https://doi.org/10.1111/j.1365-2672.2011.05065.x

51.

Ahenkorah I, Rahman MM, Karim MR, Teasdale PR (2020) Optimization of enzyme induced carbonate precipitation (eicp) as a ground improvement technique. In: Geotech Spec Publ pp 552–561. https://ascelibrary.org/doi/https://doi.org/10.1061/9780784482780.054

52.

Okwadha GDO, Li J (2010) Optimum conditions for microbial carbonate precipitation. Chemosphere 81:1143–1148. https://doi.org/10.1016/j.chemosphere.2010.09.066CrossRef

53.

Lee S, Kim J (2020) An experimental study on enzymatic-induced carbonate precipitation using yellow soybeans for soil stabilization. KSCE J Civ Eng 24:2026–2037. https://link.springer.com/article/https://doi.org/10.1007/s12205-020-1659-9

54.

Kalantary F, Kahani M (2015) Evaluation of the ability to control biological precipitation to improve sandy soils. Procedia Earth Planet Sci 15:278–284. http://linkinghub.elsevier.com/retrieve/pii/S1878522015003306

55.

Muhammed AS, Zango MU, Kassim KA, Ahmad K, Umar M (2019) Effects of cementation reagent on the precipitation of calcium carbonate induced by Bacillus Megaterium. IOP Conf Ser Mater Sci Eng. https://doi.org/10.1088/1757-899X/527/1/012022CrossRef

56.

Wen K, Li Y, Amini F, Li L (2020) Impact of bacteria and urease concentration on precipitation kinetics and crystal morphology of calcium carbonate. Acta Geotech 15:17–27. https://doi.org/10.1007/s11440-019-00899-3CrossRef

57.

Soon NW, Lee LM, Khun TC, Ling HS (2014) Factors affecting improvement in engineering properties of residual soil through microbial induced calcite precipitation. 04014006:1–11. http://ascelibrary.org/doi/pdf/https://doi.org/10.1061/(ASCE)GT.1943-5606.0001089

58.

Miftah A, Tirkolaei HK, Bilsel H (2020) Biocementation of calcareous beach sand using enzymatic calcium carbonate precipitation. Curr Comput-Aided Drug Des 10:1–15

59.

Hamdan NM (2015) Applications of enzyme induced carbonate precipitation (EICP) for soil improvement. Arizona State University. https://repository.asu.edu/attachments/143529/content/Hamdan_asu_0010E_14629.pdf

60.

van Paassen L (2009) Biogrout: Ground improvement by microbially induced carbonate precipitation. https://repository.tudelft.nl/islandora/object/uuid%3A5f3384c4-33bd-4f2a-8641-7c665433b57b

61.

Stocks-Fischer S, Galinat JK, Bang SS (1999) Microbiological precipitation of CaCO3. Soil Biol Biochem 31:1563–1571CrossRef

62.

Gat D, Ronen Z, Tsesarsky M (2017) Long-term sustainability of microbial-induced CaCO3precipitation in aqueous media. Chemosphere 184:524–531. https://doi.org/10.1016/j.chemosphere.2017.06.015CrossRef

63.

Cheng L, Shahin MA, Asce M, Mujah D (2013) Influence of key environmental conditions on microbially induced cementation for soil stabilization. J Geotech Geoenviron Eng 143:1–11. https://ascelibrary.org/doi/https://doi.org/10.1061/%28ASCE%29GT.1943-5606.0001586

64.

Duo L, Kan-liang T, Hui-li Z, Yu-yao W, Kang-yi N, Shi-can Z (2018) Experimental investigation of solidifying desert aeolian sand using microbially induced calcite precipitation. Constr Build Mater 172:251–262. https://doi.org/10.1016/j.conbuildmat.2018.03.255CrossRef

65.

Deng W, Wang Y (2018) Investigating the factors affecting the properties of coral sand treated with microbially induced calcite precipitation. Adv Civ Eng 2018:1–7. https://www.hindawi.com/journals/ace/2018/9590653/

66.

Wen K, Li Y, Liu S, Bu C, Li L (2018) Development of an improved immersing method to enhance microbial induced calcite precipitation treated sandy soil through multiple treatments in low cementation media concentration. Geotech Geol Eng. https://doi.org/10.1007/s10706-018-0669-6CrossRef

67.

Zhao Q, Li L, Li C, Zhang H, Amini F (2014) A full contact flexible mold for preparing samples based on microbial-induced calcite precipitation technology. Geotech Test J 37:917–921. https://www.astm.org/digital_library/journals/geotech/pages/GTJ20130090.htm

68.

Zhao Q, Li L, Li M, Amini F, Zhang H (2014) Factors affecting improvement of engineering properties of MICP-treated soil catalyzed by bacteria and urease. J Mater Civ Eng 25:864–870. http://www.scopus.com/inward/record.url?eid=2-s2.0-84881293408&partnerID=tZOtx3y1

69.

Montoya BM, DeJong JT (2015) Stress-strain behavior of sands cemented by microbially induced calcite precipitation. J Geotech Geoenvironm Eng. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001302CrossRef

70.

Mahawish A, Gates WP, Bouazza A (2018) Factors affecting the bio-cementing process of coarse sand. Gr Improv 172:1–12. https://cdnsciencepub.com/doi/full/https://doi.org/10.1139/cgj-2012-0023

71.

Cheng L, Cord-Ruwisch R, Shahin MA (2013) Cementation of sand soil by microbially induced calcite precipitation at various degrees of saturation. Can Geotech J 50:81–90. http://www.nrcresearchpress.com/doi/abs/https://doi.org/10.1139/cgj-2012-0023

72.

Choi SG, Chu J, Brown RC, Wang K, Wen Z (2017) Sustainable biocement production via microbially induced calcium carbonate precipitation: use of limestone and acetic acid derived from pyrolysis of lignocellulosic biomass. ACS Sustain Chem Eng 5:5183–5190. https://pubs.acs.org/doi/abs/https://doi.org/10.1021/acssuschemeng.7b00521

73.

Osinubi KJ, Gadzama EW, Eberemu AO, Ijimdiya TS, Yakubu SE (2019) Evaluation of the strength of compacted lateritic soil treated with Sporosarcina Pasteurii. In: Zhan L, Chen Y, Bouazza A (Eds) ICEG 2018 Proc. 8th Int. Congr. Environ. Geotech. Springer Singapore, pp 419–428. https://link.springer.com/chapter/https://doi.org/10.1007/978-981-13-2227-3_52

Title: Improvement of Strength Behaviour of Residual Soil via Enzymatically Induced Calcite Precipitation
Authors: Muttaqa Uba Zango
Khairul Anuar Kassim
Kamarudin Ahmad
Abubakar Sadiq Muhammed
Publication date: 01-12-2021
Publisher: Springer International Publishing
Published in: International Journal of Geosynthetics and Ground Engineering / Issue 4/2021
Print ISSN: 2199-9260
Electronic ISSN: 2199-9279
DOI: https://doi.org/10.1007/s40891-021-00323-5

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