[1] Jin Quanbin, Liu Zhibin, Lu Liangliang, Zhang Yun, et al. Experimental study on the properties of CMTs-incorporated geopolymers prepared at low temperatures [J]. Journal of Southeast University (English Edition), 2024, 40 (3): 295-303. [doi:10.3969/j.issn.1003-7985.2024.03.009]

Copy

Experimental study on the properties of CMTs-incorporated geopolymers prepared at low temperatures()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

40

Issue:

2024 3

Page:

295-303

Research Field:

Materials Sciences and Engineering

Publishing date:

2024-09-20

Info

Title:

Experimental study on the properties of CMTs-incorporated geopolymers prepared at low temperatures

Author(s):

Jin Quanbin¹;  Liu Zhibin¹;  Lu Liangliang¹;  Zhang Yun²;  Luo Tingyi²;  Tang Yasen²

¹Jiangsu Key Laboratory of Low Carbon and Sustainable Geotechnical Engineering, Southeast University, Nanjing 211189, China
²Guangxi Beitou Construction and Investment Group Co., Ltd., Nanning 530028, China

Keywords:

copper mine tailings;  geopolymer;  solid wastes;  characterization techniques;  curing methods;  carbon dioxide emission

PACS:

TU526

DOI:

10.3969/j.issn.1003-7985.2024.03.009

Abstract:

Considering that copper mine tailings(CMTs)are commonly mixed with ordinary Portland cement, fly ash(FA), and kaolin to produce geopolymers, to make full use of CMTs, the properties of geopolymers manufactured under different material mass ratios and curing methods(standard curing, water bath curing, and 60 ℃ curing)are evaluated with significantly increased dosage of CMTs. Porosity and unconfined compressive strength tests, X-ray diffraction, field emission scanning electron microscopy, and energy dispersive spectroscopy are used to determine the physical and mechanical properties, microstructure, and mineral composition of geopolymers. Finally, costs and CO₂ emissions of specimens with different material mass ratios during the preparation processes are compared. The results show that during the geopolymerization of low-calcium materials, various geopolymer gels, including calcium silicate, calcium silicoaluminate, and mainly sodium silicoaluminate gels, coexist. The solid waste, cost, and carbon dioxide emission reductions can reach 100%, 166.3 yuan/t, and 73.3 kg/t, respectively. Under a curing condition of 60 ℃, the sample with a CMTs mass fraction of 70% and an FA mass fraction of 30% meets the requirements of porosity, compressive strength. The resource utilization of CMT and FA is realized in a more economical way.

References:

[1] Ince C, Derogar S, Gurkaya K, et al. Properties, durability and cost efficiency of cement and hydrated lime mortars reusing copper mine tailings of Lefke-Xeros in Cyprus[J].Construction and Building Materials, 2021, 268: 121070. DOI: 10.1016/j.conbuildmat.2020.121070.
[2] Behera S K, Mishra D P, Prashant S, et al. Utilization of mill tailings, fly ash and slag as mine paste backfill material: Review and future perspective[J]. Construction and Building Materials, 2021, 309: 125120. DOI: 10.1016/j.conbuildmat.2021.125120.
[3] Nikvar-Hassani A, Vashaghian H, Hodges R, et al. Production of green bricks from low-reactive copper mine tailings: Chemical and mechanical aspects[J].Construction and Building Materials, 2022, 324: 126695. DOI: 10.1016/j.conbuildmat.2022.126695.
[4] Dhir R K, de Brito J, Mangabhai R, et al.Sustainable construction materials: Copper slag[M]. Cambridge, UK: Woodhead Publishing, 2016: 279-308.
[5] Liu B, Pan G H, Gao M, et al. Influence of grinding aid on the grinding effect of iron tailings and hydration properties of blended cement[J]. Journal of Southeast University(Natural Science Edition), 2022, 52(5): 907-916. DOI:10.3969/j.issn.1001-0505.2022.05.011. (in Chinese)
[6] Kundu S, Aggarwal A, Mazumdar S, et al. Stabilization characteristics of copper mine tailings through its utilization as a partial substitute for cement in concrete: Preliminary investigations[J].Environmental Earth Sciences, 2016, 75(3): 227. DOI: 10.1007/s12665-015-5089-9.
[7] Wang H R, Zhu Z D, Pu S Y, et al. Analysis on influencing factors of cadmium contaminated soil solidified by alkali-activated fly ash-slag[J]. Journal of Southeast University(Natural Science Edition), 2021, 51(6): 1025-1032. DOI:10.3969/j.issn.1001-0505.2021.06.015. (in Chinese)
[8] Ahmari S, Zhang L Y. Production of eco-friendly bricks from copper mine tailings through geopolymerization[J].Construction and Building Materials, 2012, 29: 323-331. DOI: 10.1016/j.conbuildmat.2011.10.048.
[9] Liu J Z, Sun W, Miao C W, et al. Effect of mineral admixtures on drying and autogenous shrinkage of concrete with low water-to-binder ratio[J].Journal of Southeast University(Natural Science Edition), 2009, 39(3): 580-585. DOI:10.3969/j.issn.1001-0505.2009.03.030. (in Chinese)
[10] Sharma R, Khan R A. Sustainable use of copper slag in self compacting concrete containing supplementary cementitious materials[J].Journal of Cleaner Production, 2017, 151: 179-192. DOI: 10.1016/j.jclepro.2017.03.031.
[11] Sivasakthi M, Jeyalakshmi R, Rajamane N P. Fly ash geopolymer mortar: Impact of the substitution of river sand by copper slag as a fine aggregate on its thermal resistance properties[J].Journal of Cleaner Production, 2021, 279: 123766. DOI: 10.1016/j.jclepro.2020.123766.
[12] American Society for Testing and Materials. Standard test method for density, absorption, and voids in hardened concrete: ASTM C642-21[S]. West Conshohocken, PA, USA: American Society for Testing and Materials, 2021.
[13] American Society for Testing and Materials. Standard test method for unconfined compressive strength of cohesive soil: ASTM D2166/D2166M-16[S]. West Conshohocken, PA, USA: American Society for Testing and Materials, 2016.
[14] Yan Z H, Sun Z P, Yang J B, et al. Mechanical performance and reaction mechanism of copper slag activated with sodium silicate or sodium hydroxide[J].Construction and Building Materials, 2021, 266: 120900. DOI: 10.1016/j.conbuildmat.2020.120900.
[15] National Development and Reform Commission. Non-fired rubbish gangue brick: JC/T 422—2007[S]. Beijing, China: National Development and Reform Commission, 2008.
[16] Arıöz Ö, Kilinç K, Tuncan M, et al. Physical, mechanical and micro-structural properties of F type fly-ash based geopolymeric bricks produced by pressure forming process[J]. Advances in Science and Technology, 2010, 69: 69-74. DOI: 10.4028/www.scientific.net/AST.69.69.
[17] American Society for Testing and Materials. Standard specification for building brick(solid masonry units made from clay or shale): ASTM C62-17[S]. West Conshohocken, PA, USA: American Society for Testing and Materials, 2017.
[18] American Society for Testing and Materials. Standard specification for pedestrian and light traffic paving brick: ASTM C902-22[S]. West Conshohocken, PA, USA: American Society for Testing and Materials, 2022.
[19] Usha, Nachiar S. Experimental study on the properties of concrete with replacement of cement by quarry sludge[J].International Journal of Engineering and Technical Research, 2016, 5(3): 813-817. DOI: 10.17577/ijertv5is031208.
[20] Khan K A, Raut A, Chandrudu C R, et al. Design and development of sustainable geopolymer using industrial copper byproduct[J].Journal of Cleaner Production, 2021, 278: 123565. DOI: 10.1016/j.jclepro.2020.123565.
[21] Najimi M, Sobhani J, Pourkhorshidi A R. Durability of copper slag contained concrete exposed to sulfate attack[J].Construction and Building Materials, 2011, 25(4): 1895-1905. DOI: 10.1016/j.conbuildmat.2010.11.067.
[22] You N Q, Liu Y C, Gu D W, et al. Rheology, shrinkage and pore structure of alkali-activated slag-fly ash mortar incorporating copper slag as fine aggregate[J].Construction and Building Materials, 2020, 242: 118029. DOI: 10.1016/j.conbuildmat.2020.118029.
[23] Marghussian V K, Maghsoodipoor A. Fabrication of unglazed floor tiles containing Iranian copper slags[J].Ceramics International, 1999, 25(7): 617-622. DOI: 10.1016/s0272-8842(98)00075-3.
[24] Medina-Martos E, Gálvez-Martos J L, Almarza J, et al. Environmental and economic performance of carbon capture with sodium hydroxide[J].Journal of CO2 Utilization, 2022, 60: 101991. DOI: 10.1016/j.jcou.2022.101991.
[25] Amran M, Makul N, Fediuk R, et al. Global carbon recoverability experiences from the cement industry[J].Case Studies in Construction Materials, 2022, 17: e01439. DOI: 10.1016/j.cscm.2022.e01439.

Memo

Memo:

Biographies: Jin Quanbin(1993—), male, Ph. D. candidate; Liu Zhibin(corresponding author), male, doctor, professor, seulzb@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 41877240), Scientific Research Foundation of Graduate School of Southeast University(No. YBPY1930).
Citation: Jin Quanbin, Liu Zhibin, Lu Liangliang, et al. Experimental study on the properties of CMTs-incorporated geopolymers prepared at low temperatures[J].Journal of Southeast University(English Edition), 2024, 40(3):295-303.DOI:10.3969/j.issn.1003-7985.2024.03.009.

Common functions