مهندسی سازه و ساخت

مهندسی سازه و ساخت

امکانسنجی تولید محصول نوین با استفاده از پسماند گل قرمز تولیدی در فرآوری آلومینا به منظور تولید ارزش افزوده و جلوگیری از هدردهی پسماند

نوع مقاله : علمی - پژوهشی

نویسندگان
1 استادیار، دانشکده مهندسی عمران و محیط زیست، دانشگاه صنعتی امیرکبیر، تهران، ایران
2 دانشجوی دکتری مهندسی عمران، دانشکده مهندسی عمران و محیط زیست، دانشگاه صنعتی امیرکبیر، تهران، ایران
چکیده
این تحقیق به بررسی استفاده از گل قرمز آلومینا به‌عنوان جایگزین بخشی از سرباره در بتن‌های قلیایی فعال پرداخته است. هدف اصلی تحقیق تولید محصولاتی با عملکرد فنی بالا و در عین حال کاهش تأثیرات زیست‌محیطی ناشی از مواد زائد صنعتی است. در این راستا، درصدهای مختلف گل قرمز (تا 40 درصد) در ترکیب بتن قلیایی فعال به‌کار گرفته شد و تأثیر آن‌ها بر ویژگی‌هایی همچون زمان گیرش، مقاومت فشاری، مقاومت خمشی و جذب آب بررسی شد. نتایج نشان داد که افزودن گل قرمز تا 20 درصد، زمان گیرش بتن را افزایش داد که می‌تواند در پروژه‌های خاص مفید باشد. بیشترین مقاومت فشاری در نمونه‌هایی با 20 درصد گل قرمز مشاهده شد که در سن 7 روز حدود 40 مگاپاسکال و در سن 28 روز 55 مگاپاسکال بود، که برای کاربردهای سازه‌ای مناسب است. همچنین، استفاده از 30 و 40 درصد گل قرمز نیز به مقاومت فشاری قابل قبولی منجر شد. این تحقیق نشان داد که گل قرمز می‌تواند به‌عنوان جایگزین مناسبی برای سرباره در بتن‌های قلیایی فعال استفاده شود، بدون اینکه مقاومت بتن به‌طور چشمگیری کاهش یابد. به‌طور کلی، این تحقیق به‌عنوان یک راهکار نوآورانه برای استفاده مجدد از مواد زائد صنعتی، به‌ویژه در تولید بتن‌های پیش‌ساخته و قطعات بتنی، پیشنهاد می‌دهد و موجب بهبود دوام و پایداری بتن در شرایط محیطی مختلف می‌شود.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Feasibility of producing a novel product using red mud waste generated in the alumina processing to create added value and prevent waste disposal.

نویسندگان English

GholamReza Havaei 1
SeyedAli Mohseni 2
1 Assistant professor, Department of Civil and Environment Engineering, AmirKabir University of Technology, Tehran, Iran
2 Assistant Professor, Department of Civil Engineering and Environmental, Amirkabir University of Technology, Tehran, Iran
چکیده English

This research investigates the use of red mud from the alumina plant as a partial replacement for slag in alkali-activated concrete. The main objective of this study is to produce high-performance products while reducing the environmental impacts associated with industrial waste. In this regard, various percentages of red mud (up to 40%) were incorporated into alkali-activated concrete, and its effects on properties such as setting time, compressive strength, flexural strength, and water absorption were examined. The results showed that adding up to 20% red mud increased the setting time of the concrete, which can be beneficial in specific projects. The highest compressive strength was observed in samples containing 20% red mud, with 40 MPa at 7 days and 55 MPa at 28 days, which is suitable for structural applications. Additionally, the use of 30% and 40% red mud also resulted in acceptable compressive strength. This research demonstrated that red mud can serve as an effective replacement for slag in alkali-activated concrete without significantly reducing the concrete’s strength. Overall, this study presents an innovative solution for the reuse of industrial waste, particularly in the production of precast concrete and concrete components, and improves the durability and sustainability of concrete under various environmental conditions.

کلیدواژه‌ها English

Bauxite residue
red mud
geopolymer concrete
alkali-activated
concrete
[1] Bandar, D., Hassani, N., & Khodaparast, M. M. (1390). Jupolymer concrete and its applications, the first international conference on Natrava concretes, drinking water storage tanks, Rasht, Golestan Urban Water and Sewerage Company. In Persian.
[2] Palomo, A., Grutzeck, M. W., & Blanco, M. T. (1999). Alkali-activated fly ashes: a cement for the future. Cement and Concrete Research, 29(8), 1323-1329.
[3] Naik, T. R., & Singh, S. S. (1995). Use of high-calcium fly ash in cement-based construction materials. Proceedings of Fifth CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete, 1–44.
[4] Wang, S. D., Scrivener, K. L., & Pratt, P. L. (1994). Factors affecting the strength of alkali-activated slag. Cement and Concrete Research, 24(6), 1033-1043.
[5] Tchakoute, H. K., & Ruscher, C. H. (2017). Mechanical and microstructural properties of metakaolin-based geopolymer cements from sodium waterglass and phosphoric acid solution as hardeners: a comparative study. Applied Clay Science, 140, 81–87.
[6] Ma, C., Zhao, B., Guo, S. L., et al. (2019). Properties and characterization of green one-part geopolymer activated by composite activators. Journal of Cleaner Production, 220, 188-199.
[7] Singh, N. B., & Middendorf, B. (2020). Geopolymers as an alternative to Portland cement: An overview. Construction and Building Materials, 237, 117455.
[8] Singh, B., Ishwarya, G., Gupta, M., & Bhattacharyya, S. K. (2015). Geopolymer concrete: A review of some recent developments. Construction and Building Materials, 85, 78–90.
[9] Xu, H., Provis, J. L., van Deventer, J. S., & Krivenko, P. V. (2008). Characterization of aged slag concretes. ACI Materials Journal, 105(2), 131-139.
[10] Bakharev, T., Sanjayan, J. G., & Cheng, Y. B. (1999). Alkali activation of Australian slag cements. Cement and Concrete Research, 29(1), 113-120.
[11] Zhang, B., Guo, H., Yuan, P., et al. (2020). Novel acid-based geopolymer synthesized from nanosized tubular halloysite: the role of precalcination temperature and phosphoric acid concentration. Cement and Concrete Composites, 110, 103601.
[12] Bazant, Z. P., & Wittmann, F. H. (1982). Creep and shrinkage in concrete structures.
[13] Davidovits, J. (1994). Properties of geopolymer cements. First International Conference on Alkaline Cements and Concretes, 1, 131-149.
[14] Krizan, D., & Zivanovic, B. (2002). Effects of dosage and modulus of water glass on early hydration of alkali-slag cements. Cement and Concrete Research, 32(8), 1181-1188.
[15] Naik, T. R., & Singh, S. S. (1995). Use of high-calcium fly ash in cement-based construction materials. Proceedings of Fifth CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete, 1–44.
[16] Kumar, S., Kumar, R., & Mehrotra, S. P. (2010). Influence of granulated blast furnace slag on the reaction, structure, and properties of fly ash-based geopolymer. Journal of Materials Science, 45(3), 607-615.
[17] Guo, X., Shi, H., & Dick, W. A. (2010). Compressive strength and microstructural characteristics of class C fly ash geopolymer. Cement and Concrete Composites, 32(2), 142–147.
[18] Chindaprasirt, P., De Silva, P., Sagoe-Crentsil, K., & Hanjitsuwan, S. (2012). Effect of SiO2 and Al2O3 on the setting and hardening of high calcium fly ash-based geopolymer systems. Journal of Materials Science, 47(12), 4876–4883.
[19] Havaei, G., & Mohseni, S. (2025). The Environmental Resistance of Low-Carbon Geopolymer Concret, A Review Article. Journal of Structural and Construction Engineering12(01), 5-29.
[20] Havaei, G. (2023). Numerical evaluation of seismically retrofitted bridge concrete column under extreme loading. Structural Concrete24(4), 5349-5369.
[21] Havaei, G. R., & Keramati, A. (2011). Experimental and numerical evaluation of the strength and ductility of regular and cross spirally circular reinforced concrete columns for tall buildings under eccentric loading. The Structural Design of Tall and Special Buildings20(2), 247-256.
[22] Havaei, G., & Bayat, E. (2017). The structural response and manner of progressive collapse in RC buildings under the blast and Provide approaches to retrofitting columns against blast. Journal of Structural and Construction Engineering4(1), 81-100.
[23] Havaei, G. (2016). Sensitivity based analyses by artificial earthquake by measuring structural accelerations for damage assessment. Journal of Structural and Construction Engineering2(4), 104-116.
[24] Havaei, G., & Zare, A. (2017). Numerical analysis of effective parameters in response of the nonlinear passive viscous systems. Journal of Structural and Construction Engineering4(Special Issue 1), 35-47.
[25] Havaei, G., & Mobedi, E. (2015). Effect of interaction and rocking motion on the earthquake response of buildings. Journal of Structural and Construction Engineering1(1), 39-49.
[26] Havaei, G., & Izadparast, S. M. (2021). Effect of soil block thickness modeling on soil-structure interaction in dynamic responses of 15-storey high-rise buildings. Journal of Structural and Construction Engineering8(10), 301-316.
[27] Hayati, Y., Eslami, A., & Havaei, G. (2024). Asymmetric 3D stress-and flux-induced wave propagation in transversely isotropic thermoelastic solids by using of analytical methods. Waves in Random and Complex Media34(5), 4868-4885.
[28] Hayati, Y., Havaei, G., & Eslami, A. (2021). 3D asymmetric dynamic Green’s functions of a thermoelastic transversely isotropic solid by a method of potentials. Journal of Thermal Stresses44(11), 1366-1388.

  • تاریخ دریافت 21 آذر 1403
  • تاریخ بازنگری 13 اسفند 1403
  • تاریخ پذیرش 20 فروردین 1404