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تثبیت ماسه بادی با استفاده از متاکائولن و پسماند کاربید کلسیم به عنوان فعالساز قلیایی | ||
| نشریه مهندسی عمران امیرکبیر | ||
| مقاله 4، دوره 55، شماره 8، آبان 1402، صفحه 1579-1600 اصل مقاله (1.2 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2023.21238.7675 | ||
| نویسندگان | ||
| محمد کیانی نژاد1؛ محمدمحسن توفیق1؛ وحید توفیق* 2 | ||
| 1دانشکده مهندسی عمران، دانشگاه شهید باهنر کرمان، کرمان، ایران | ||
| 2دانشکده مهندسی عمران و نقشه برداری، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان، ایران | ||
| چکیده | ||
| تثبیت خاک‌های ضعیف و بد‌دانه بندی شده در پروژه‌های مهندسی اغلب با استفاده از آهک و سیمان انجام می‌پذیرد. مقادیر قابل ملاحظه انرژی حرارتی مورد نیاز در فرآیند تولید سیمان و همچنین حجم دی‌اکسید‌کربن تولید شده در این صنعت، مخاطرات زیست‌محیطی قابل‌ملاحظه‌ای را به همراه داشته است. آلومینوسیلیکات‌های فعال شده قلیایی به عنوان یک گزینه ارزان قیمت و سازگار با محیط زیست یکی از جدی‌ترین جایگزین‌های شناخته شده برای سیمان و آهک به شمار می‌روند. هدف از این مطالعه بررسی امکان‌پذیری استفاده از متاکائولن در فرآیند تثبیت ماسه بادی به همراه استفاده از پسماند کاربید کلسیم به عنوان فعالساز قلیایی است. مواردی همچون میزان متاکائولن، غلظت فعالساز قلیایی، زمان و حرارت عمل‌آوری نمونه های خاک تثبیت شده با استفاده از آزمایش مقاومت فشاری محدود نشده (UCS) و نسبت باربری کالیفرنیا (CBR) مورد بررسی قرار گرفته است و نتایج با نمونه ماسه بادی تثبیت شده با سیمان پرتلند مورد مقایسه قرار گرفته است. بررسی ریزساختارهای شکل گرفته درفرآیند تثبیت خاک با استفاده از میکروسکوپ الکترونی روبشی(SEM) و طیف‌نگاری پراش انرژی پرتوایکس(EDX) انجام پذیرفته است. نتایج به دست آمده موید افزایش قابل ملاحظه مقاومت فشاری و کرنش پذیری نمونه های خاک تثبیت شده است. علاوه بر این، تحلیل ریزساختارهای پدید آمده در نمونه‌های خاک تثبیت شده چسبندگی قابل‌ملاحظه میان ژل چسبانندهC-A-S-H و ذرات ماسه و همچنین پرشدن فضای میان‌دانه‌ای با ژل حاصل از فعالسازی متاکائولن را نشان می‌دهد. برآیند نتایج حاصل از این مطالعه بیانگر قابلیت قابل‌ملاحظه ژل چسباننده معرفی‌شده به عنوان یک عامل تثبیت کننده سازگار با محیط زیست در فرآیند تثبیت خاک‌های ماسه‌ای می‌باشد. | ||
| کلیدواژه‌ها | ||
| متاکائولن؛ پسماند کاربید کلسیم؛ تثبیت خاک؛ فعالسازی قلیایی؛ ماسه بادی | ||
| موضوعات | ||
| بهسازی خاک ها | ||
| عنوان مقاله [English] | ||
| Aeolian Sand Stabilization using Metakaolin and Calcium Carbide Residue as an Alkaline Activator | ||
| نویسندگان [English] | ||
| Mohamad Kianynejad1؛ Mohammad Mohsen Toufigh1؛ Vahid Toufigh2 | ||
| 1Department of civil engineering. Faculty of engineering. Shahid Bahonar University of Kerman. Kerman. Iran. | ||
| 2Faculty of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran | ||
| چکیده [English] | ||
| Stabilizing weak and poorly graded soils in engineering projects is commonly achieved using lime and cement. However, the cement production process requires significant energy and generates a substantial volume of carbon dioxide, which presents considerable environmental risks. As an alternative to cement and lime, alkali-activated aluminosilicates have gained recognition due to their cost-effectiveness and environmental compatibility. This study aims to investigate the feasibility of utilizing metakaolin as a stabilizing agent for sandy soil, with Calcium carbide residue (CCR) serving as an alkaline activator. To this end, factors such as the concentration of alkaline activator, metakaolin content, curing time, and temperature of treated soil samples were examined through unconfined compressive strength (UCS) and California Bearing Ratio (CBR) tests. The results were then compared to those of sand stabilized with Portland cement. Furthermore, scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) were used to analyze the microstructures formed during the soil stabilization process. The findings indicate a significant increase in the stabilized soil samples' compressive strength and ductile behavior. Moreover, the analysis of the developed microstructures in the stabilized soil samples demonstrates a noticeable bond between the binding gel and sand particles and the filling of intergranular space with alkali-activated binding gel. Overall, the findings of the present study suggest that the introduced binding gel has the potential to be an environmentally compatible stabilizing agent for stabilizing sandy soils. | ||
| کلیدواژه‌ها [English] | ||
| Metakaolin, calcium carbide residue, soil stabilization, Alkali activation, aeolian sand | ||
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| مراجع | ||
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[1] C.A. Anagnostopoulos, Strength properties of an epoxy resin and cementstabilized silty clay soil, Applied Clay Science, 114 (2015) 517–529. [2] A. Mosallanejad, H. Taghvaei, S.M. Mirsoleimani-azizi, A. Mohammadi, M.R. Rahimpour, Plasma upgrading of 4methylanisole: a novel approach for hydrodeoxygenation of bio oil without using a hydrogen source, Chemical Engineering Research and Design, 121 (2017) 113–124. [3] GP. Zhang, JA. He, RP. Gambrell, Synthesis, characterization, and mechanical properties of red mudbased geopolymers, Transportation Research Record, 2167 (2010) 1–9. [4] A. Bosoaga, O. Masek, J.E. Oakey, CO2 capture technologies for cement industry, Energy Procedia 1 (1) (2009) 133–140. [5] H. Fatehi, S.M. Abtahi, H. Hashemolhosseini, S.M. Hejazi, A novel study on using protein based biopolymers in soil strengthening, Construction and Building Materials, 167 (2018) 813–821. [6] J. Davidovits, Geopolymer Chemistry and Application, Institut Geopolymere, France, 2008. [7] C. Shi, P.V. Krivenko, DM. Roy, Alkali-activated Cements and Concretes, Taylor & Francis, London, New York, 2006. [8] D. Hardjito, SE. Wallah, DMJ. Sumajouw, BV Rangan, On the development of fly ash-based geopolymer concrete, ACI Materials Journal, 101(6) (2004) 467–72. [9] M. Zhang, H. Guo, T. El-Korchi, G. Zhang, M. Tao, Experimental feasibility study of geopolymer as the next-generation soil stabilizer, Construction and Building Materials, 47 (2013) 1468–1478. [10] JF. Rivera, R. Mejía de Gutiérre, S. Ramirez-Benavides, A. Orobio, Compressed and stabilized soil blocks with fly ash-based alkali-activated cements, Construction and Building Materials, 264 (2020) 120285. [11] N. Shariatmadari, H. Hasanzadehshooiili, P. Ghadir, F. Saeidi, F. Moharami, Compressive Strength of Sandy Soils Stabilized with Alkali-Activated Volcanic Ash and Slag, Journal of Materials in Civil Engineering, 33(11) (2021) 04021295. [12] MC. Silva, T. Miranda, M. Rouainia, N. Araujo, S. Glendinning, N. Cristelo, Geomechanical behaviour of a soft soil stabilised with alkali-activated blast-furnace slags, cleaner production, 267 (2020) 122017. [13] S. Horpibulsuk, C. Phetchuay, A. Chinkulkijniwat, A. Cholaphatsorn, Strength development in silty clay stabilized with calcium carbide residue and fly ash, Soils and Foundations, 53 (2013) 477–486. [14] S. Horpibulsuk, C. Phetchuay, A. Chinkulkijniwat, Soil Stabilization by Calcium Carbide Residue and Fly Ash, Journal of Materials in Civil Engineering, 24(2) (2012) 184–193. [15] C. Phetchuay, S. Horpibulsuk, A. Arulrajah, C. Suksiripattanapong, Strength development in soft marine clay stabilized by fly ash and calcium carbide residue based geopolymer, Applied Clay Science, 127 (2016) 134–142. [16] S. Lopez-Querol, J. Arias-Trujillo, M. GM-Elipe, A. Matias-Sanchez, B. Cantero, Improvement of the bearing capacity of confined and unconfined cement-stabilized aeolian sand, Construction and Building Materials, 153 (2017) 374–384. [17] J. Arias-Trujillo, A. Matías-Sanchez, B. Cantero , S. López-Querol , Effect of polymer emulsion on the bearing capacity of aeolian sand under extreme confinement conditions, Construction and Building Materials, 236 (2020) 117473. [18] D. Li, K. Tian, H. Zhang, Y. Wub, K. Nie , S. Zhang, Experimental investigation of solidifying desert aeolian sand using microbially induced calcite precipitation, Construction and Building Materials, 172 (2018) 251–262. [19] J. Davidovits, Geopolymers: inorganic polymeric new materials, Journal of Thermal Analysis, 37 (1991) 1633–1656. [20] A. Marsh, A. Heath, P. Patureau, P. Evernden, P. Walker, Influence of clay minerals and associated minerals in alkali activation of soils, Construction and Building Materials, 229 (2019) 116816. [21] M. Pourabbas Bilondi, MM. Toufigh, V. Toufigh, Experimental investigation of using a recycled glass powder-based geopolymer to improve the mechanical behavior of clay soils, Construction and Building Materials, 170 (2018) 302–313. [22] ASTM D2487, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System), ASTM International, 2011. [23] ASTM D698, Standard Test Methods for Laboratory Compaction Characteristics of Soil using Standard Effort, ASTM International, 2007. [24] S.M. Horpibulsuk, R. Rachan, A. Chinkulkijniwat, Y. Raksachon, A. Suddeepong, Analysis of strength development in cement-stabilized silty clay from microstructural considerations, Construction and Building Materials, 24 (2010) 2011–2021. [25] T.W. Zhang, X.B. Yue, Y.F. Deng, D.W. Zhang, S.Y. Liu, Mechanical behavior and micro-structure of cement-stabilised marine clay with a metakaolin agent, Construction and Building Materials, 73 (2014) 51–57. [26] M. Murat, J. Ambroise, J. Pera, Investigation on synthetic binders obtained by middle temperature thermal dissociation of clay minerals. In: 87th Annual meeting of the American ceramic society, Cincinnati, Ohio; May 5–9, 1985. [27] P. Duxson, A. Fernandez-Jimenez, JL. Provis, GC. Lukey, A. Palomo, JSJ. van Deventer, Geopolymer technology: the current state of the art, Journal of Materials Science, 42(9) (2007) 2917–33. [28] J. He, J. Zhang , Y. Yu , G. Zhang, The strength and microstructure of two geopolymers derived from metakaolin and red mud-fly ash admixture: A comparative study, Construction and Building Materials, 30 (2012) 80–91. [29] L. Wang, X. Li , Y. Cheng, Y. Zhang , X. Bai , Effects of coal-bearing metakaolin on the compressive strength and permeability of cemented silty soil and mechanisms, Construction and Building Materials, 186 (2018) 174–181. [30] Z.L. Wu, Y.F. Deng, S.Y. Liu, Q.W. Liu, Y.G. Chen, F.S. Zha, Strength and microstructure evolution of compacted soils modified by admixtures of cement and metakaolin, Applied Clay Science, 127 (2016) 44–51. [31] K.G. Kolovos, P.G. Asteris, D.M. Cotsovos, E. Badogiannis, S. Tsivilis, Mechanical properties of soilcrete mixtures modified with metakaolin, Construction and Building Materials, 47 (2013) 1026–1036. [32] ASTM D2166, Standard Test Method for Unconfined Compressive Strength of Cohesive Soil, Annual Book of ASTM Standards, West Conshohocken, 2016. [33] ASTM D1883 (2016) Standard test method for California bearing ratio test of soil. D 1883, ASTM International, West Conshohocken, PA, USA. [34] M. Pourabbas, M. Toufigh, V. toufigh, Using calcium carbide residue as an alkaline activator for glass powder–clay geopolymer, Construction and Building Materials, 183 ( 2018) 417-428. [35] KJDB. MacKenzie, R. Dan Fletcher, C. Nicholson, R. Vagana, M. Schmücker, Advances in understanding the synthesis mechanisms of new geopolymeric materials. In: 6th Pacific Rim conference on ceramic and glass technology 2006. American Ceramic Society: Maui, HI, United States. p. 187–19. [36] CK. Yip, G. Lukey, J. Van Deventer, The coexistence of geopolymeric gel and calcium silicate hydrate at the early stage of alkaline activation, Cement and Concrete Research, 35(9) (2005) 1688–1697. [37] I. Lecomte, C. Henrist, M. Liegeois, F. Maseri, A. Rulmont, R. Cloots, (Micro)-structural comparison between geopolymers, alkaliactivated slag cement and Portland cement. Journal of European Ceramic Society 26(16) (2006) 3789–3797. | ||
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