Mikrobiyal Aracılı Kalsit Çökelmesi (MICP) Tekniğinde Çimentolama Solüsyonu Enjeksiyonuna Sodyum Aljinat Yoğunluğunun Etkisinin İncelenmesi
Abstract
Günümüzde zeminlerin iyileştirilmesi için birçok farklı metot kullanılmaktadır. Bu metotların birçoğu çevreye zararlı bileşenler içerdiğinden alternatif zemin iyileştirme yöntemlerine ihtiyaç duyulmaktadır. Bu kapsamda zemin iyileştirme yöntemlerine çevreci bir yaklaşım olarak ortaya çıkan Mikrobiyal Aracılı Kalsit Çökelmesi (MICP) tekniği ile zeminlerin mühendislik özellikleri iyileştirilebilmektedir. Ancak MICP tekniği ile zeminlerin iyileştirilmesinde karşılaşılan problemlerden biri uygulama süresidir. Uygulama süresi genelde oldukça fazla olan MICP tekniği için farklı uygulamalara ihtiyaç duyulduğu anlaşılmaktadır. Bu amaçla çalışmamızda çimentolama solüsyonuna (kalsiyum klorür) ilave edildiğinde uygulama süresini azaltabilecek bir biyopolimer türü olan sodyum aljinatın enjeksiyon özellikleri incelenmiştir. Farklı yoğunluklarda hazırlanan sodyum aljinat solüsyonu zemine enjeksiyon yöntemiyle verilerek zemin içerisindeki dağılımı uygulama süresince takip edilmiş ve sonuçlar permeabilite deneyi ve Taramalı Elektron Mikroskobu (SEM) analizi ile değerlendirilmiştir. Sonuç olarak çimentolama solüsyonuna ilaveten sodyum aljinat kullanımının tüm yoğunluklarda (0.1 g/l, 0.3 g/l, 0.6 g/l) permeabilite üzerinde olumlu sonuçları olmuştur. Daha düşük yoğunluklarda ise (0.1 g/l) uygulama süresi biraz daha artmış ancak daha iyi geçirimlilik sonuçlarıyla beraber daha homojen bir dağılım elde edilebilmiştir. SEM analizleri sonucunda oluşan jel yapının taneler arasında bağ oluşturduğu gözlemlenmiştir. MICP tekniği ile zeminlerin iyileştirmesinde düşük yoğunluklarda (en fazla 0.1 g/l) sodyum aljinat kullanımının uygulama süresine olumlu etkisinin olabileceği değerlendirilmiştir.
Keywords
References
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- [16] K. A. Gebru, T. G. Kidanemariam, and H. K. Gebretinsae, “Bio-cement production using microbially induced calcite precipitation (MICP) method: A review,” Chem Eng Sci, vol. 238, p. 116610, 2021.
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Investigation of the Effect of Sodium Alginate Density on Cementing Solution Injection in Microbial Induced Calcite Precipitation (MICP) Technique
Abstract
Today, many different methods are used to improve soils. Since many of these methods contain environmentally harmful components, alternative soil improvement methods are needed. In this context, the engineering properties of soils can be improved with the Microbial Induced Calcite Precipitation (MICP) technique, which emerged as an environmentally friendly approach to soil improvement methods. However, one of the problems encountered in improving soils with the MICP technique is the application time. It is understood that different applications are needed for the MICP technique, which has a very long application time. For this purpose, the injection properties of sodium alginate, a biopolymer type that can reduce the application time when added to the cementing solution (calcium chloride), were investigated. Sodium alginate solution prepared in different densities was injected into the soil. Its distribution in the soil was followed during the application; the results were evaluated by permeability test and Scanning Electron Microscope (SEM) analysis. As a result, using sodium alginate in addition to the cementing solution had positive results on permeability at all densities (0.1 g/l, 0.3 g/l, 0.6 g/l). At lower densities (0.1 g/l), the application time was slightly longer, but a more homogeneous distribution could be obtained with better permeability results. It was observed that the gel structure formed as a result of SEM analyses formed a bond between the grains. It has been evaluated that using sodium alginate at low densities (up to 0.1 g/l) in soil improvement applications made with the MICP technique may positively affect the application time.
Keywords
References
- [1] N. Bozkurt ve N. Sayın, “Günümüz Teknolojileri Çerçevesinde Çimento Dünyasındaki Gelişmelerin Araştırılması,” Düzce Üniversitesi Bilim ve Teknoloji Dergisi, c. 9, s. 4, ss. 1159–1173, 2021.
- [2] A. Sharma and R. R., “Study on effect of Microbial Induced Calcite Precipitates on strength of fine grained soils,” Perspect Sci (Neth), vol. 8, pp. 198–202, 2016.
- [3] L. Cheng, M. A. Shahin, R. Cord-Ruwisch, M. Addis, T. Hartanto, and C. Elms, “Soil stabilisation by microbial-induced calcite precipitation (MICP): investigation into some physical and environmental aspects,” presented at 7th international congress on environmental geotechnics, Melbourne, Australia, 2014.
- [4] L. Cheng, R. Cord-Ruwisch, and M. A. Shahin, “Cementation of sand soil by microbially induced calcite precipitation at various degrees of saturation,” Canadian Geotechnical Journal, vol. 50, no. 1, pp. 81–90, 2013.
- [5] M. Dagliya, N. Satyam, and A. Garg, “Experimental Study on Optimization of Cementation Solution for Wind-Erosion Resistance Using the MICP Method,” Sustainability, vol. 14, no. 3, p. 1770, 2022.
- [6] M. Sharma, N. Satyam, and K. R. Reddy, “Investigation of various gram-positive bacteria for MICP in Narmada Sand, India,” International Journal of Geotechnical Engineering, vol. 15, no. 2, pp. 220–234, 2021.
- [7] H. Akoğuz, “Mikrobiyal aracılı kalsit çökelmesi ile zeminlerin biyolojik iyileştirilmesinde bazı değişkenlerin etkisinin araştırılması,” Doktora, Fen Bilimleri Enstitüsü, Atatürk Üniversitesi, Erzurum, Türkiye, 2019.
- [8] M. G. Arab, R. A. Mousa, A. R. Gabr, A. M. Azam, S. M. El-Badawy, and A. F. Hassan, “Resilient Behavior of Sodium Alginate–Treated Cohesive Soils for Pavement Applications,” Journal of Materials in Civil Engineering, vol. 31, no. 1, p. 04018361, 2019.
- [9] K. Wen, Y. Li, W. Huang, C. Armwood, F. Amini, and L. Li, “Mechanical behaviors of hydrogel-impregnated sand,” Constr Build Mater, vol. 207, pp. 174–180, 2019.
- [10] L. Cheng, Y. Yang, and J. Chu, “In-situ microbially induced Ca2+-alginate polymeric sealant for seepage control in porous materials,” Microb Biotechnol, vol. 12, no. 2, pp. 324–333, 2019.
- [11] A. Almajed, K. Lemboye, M. G. Arab, and A. Alnuaim, “Mitigating wind erosion of sand using biopolymer-assisted EICP technique,” Soils and Foundations, vol. 60, no. 2, pp. 356–371, 2020.
- [12] N.-J. Jiang and K. Soga, “Erosional behavior of gravel-sand mixtures stabilized by microbially induced calcite precipitation (MICP),” Soils and Foundations, vol. 59, no. 3, pp. 699–709, 2019.
- [13] F. Teng, Y.-C. Sie, and C. Ouedraogo, “Strength improvement in silty clay by microbial-induced calcite precipitation,” Bulletin of Engineering Geology and the Environment, vol. 80, no. 8, pp. 6359–6371, 2021.
- [14] B. M. Mortensen, M. J. Haber, J. T. DeJong, L. F. Caslake, and D. C. Nelson, “Effects of environmental factors on microbial induced calcium carbonate precipitation,” J Appl Microbiol, vol. 111, no. 2, pp. 338–349, 2011.
- [15] Z. Wang, N. Zhang, J. Ding, Q. Li, and J. Xu, “Thermal conductivity of sands treated with microbially induced calcite precipitation (MICP) and model prediction,” Int J Heat Mass Transf, vol. 147, p. 118899, 2020.
- [16] K. A. Gebru, T. G. Kidanemariam, and H. K. Gebretinsae, “Bio-cement production using microbially induced calcite precipitation (MICP) method: A review,” Chem Eng Sci, vol. 238, p. 116610, 2021.
- [17] Standard specification for woven wire test sieve cloth and test sieves, ASTM E11, 2013.
- [18] Standard practice for classification of soils for engineering purposes, ASTM D2487-11, 2011.
- [19] S. N. Wei, L. L. Min, K. T. Chew, and L. H. Siew, “Factors Affecting Improvement in Engineering Properties of Residual Soil through Microbial-Induced Calcite Precipitation,” Journal of Geotechnical and Geoenvironmental Engineering, vol. 140, no. 5, p. 04014006, 2014.
- [20] Y. Zhao, J. Zhuang, Y. Wang, Y. Jia, P. Niu, and K. Jia, “Improvement of loess characteristics using sodium alginate,” Bulletin of Engineering Geology and the Environment, vol. 79, no. 4, pp. 1879–1891, 2020.
- [21] CS. Tang, Ly. Yin, Nj. Jiang, C. Zhu, H. Zeng, B. Shi, “Factors affecting the performance of microbial-induced carbonate precipitation (MICP) treated soil: a review,” Environ Earth Sci, vol. 79, no. 5, p. 94, 2020.
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Engineering |
| Journal Section | Articles |
| Authors | |
| Publication Date | July 31, 2023 |
| Published in Issue | Year 2023 Volume: 11 Issue: 3 |
