矿粉、电石渣协同制备赤泥-粉煤灰地质聚合物的研究

doi:10.11896/cldb.25020016

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Abstract Red mud (RM) and fly ash (FA) can be alkali-activated to synthesize geopolymers, yet their mechanical strength remains limited under ambient curing conditions. In this work, an enhanced RM-FA geopolymer system was proposed by incorporating ground granulated blast furnace slag (GGBS) and carbide slag (CS) as supplementary calcium activators, forming RM-FA-GGBS (RFG) and RM-FA-CS (RFC) composites, respectively. For comparison, a cement-modified control group (RM-FA-OPC, RFO) with equivalent ordinary Portland cement (OPC) content was prepared. The effects of GGBS and CS content (4%, 8%, 12%) on mechanical performance and microstructural evolution were systematically investigated through compressive strength tests, phase analysis (XRD), pore structure characterization (MIP), and morphological observation (SEM-EDS). Results demonstrate that low additions of GGBS or CS (≤8%) effectively optimize the geopolymerization process by introducing reactive Ca, facilitating the co-precipitation of C-(A)-S-H gels with crystalline ettringite (AFt) and hydrocalumite. This synergy enhances both microstructural densification and mechanical strength. However, excessive activators (＞8%) induce rapid reaction, generating discontinuous pores that compromise long-term strength. Notably, RFO-12% exhibits higher late-stage strength than RFG-12%, despite its inferior early strength compared to RFG-12%. The findings highlight that GGBS incorporation significantly improves room-temperature geopolymerization efficiency in RM-FA systems, offering a viable low-carbon material for construction applications such as pavement bases and composite foundations.

Key words： red mud-fly ash geopolymer ground granulated blast furnace slag carbide slag strength microstructure

Received: 10 May 2026 Published: Online: 2026-05-18

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TU526

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	Articles by authors
	NIE Qingke
	LI Huawei
	ZHANG Haiqing
	ZHANG Rihua
	KONG Depeng

Cite this article:

NIE Qingke,LI Huawei,ZHANG Haiqing, et al. Study on the Collaborative Preparation of Red Mud-Fly Ash Geopolymer UsingSlag and Carbide Slag[J]. Materials Reports, 2026, 40(9): 25020016-7.

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https://www.mater-rep.com/EN/10.11896/cldb.25020016 OR https://www.mater-rep.com/EN/Y2026/V40/I9/25020016

1 Niu A Y, Lin C X.Journal of Environmental Management, 2024, 351, 119660.
2 Bai J W, Hu X Z, Feng G R, et al.Mining Safety & Environmental Protection, 2025, 52(6), 57(in Chinese).
白锦文, 胡鑫哲, 冯国瑞, 等.矿业安全与环保, 2025, 52(6), 57.
3 Pan X L, Lyu Z Y, Wu H F, et al.The Chinese Journal of Nonferrous Metals, 2023, 33(11), 3879 (in Chinese).
潘晓林, 吕中阳, 吴鸿飞, 等.中国有色金属学报, 2023, 33(11), 3879.
4 Yang H P, Bai B, Nie Q K.Rock and Soil Mechanics, 2017, 38(S1), 299 (in Chinese).
杨海朋, 白冰, 聂庆科.岩土力学, 2017, 38(S1), 299.
5 Nie Q K, Hu W, Huang B S, et al.Journal of Hazardous Materials, 2019, 369, 503.
6 Shao Y, Ma S L, Li S Y, et al.Journal of Cleaner Production, 2024, 439, 140882.
7 Li Z P, Gao M S, Lei Z X, et al.Case Studies in Construction Materials, 2023, 19, e02410.
8 Uysal M, Dilbas H, ÇoŞgun T, et al.Construction and Building Materials, 2024, 425, 135915.
9 Wang Q W, Han S, Yang J H, et al.Construction and Building Materials, 2023, 409, 133730.
10 Liu J R, Doh J H, Ong D E L, et al.Journal of Building Engineering, 2023, 71, 106559.
11 He J Y, Guo T, Li Z F, et al.Materials Chemistry and Physics, 2024, 314, 128807.
12 Hu W, Nie Q K, Huang B S, et al.Construction and Building Materials, 2018, 191, 1120.
13 Hu W, Nie Q K, Huang B S, et al.Journal of Cleaner Production, 2018, 186, 799.
14 Nie Q K, Hu W, Ai T, et al.Construction and Building Materials, 2016, 125, 905.
15 Hu W, Nie Q K, Huang B S, et al.Journal of Cleaner Production, 2019, 215, 1481.
16 Bai B, Bai F, Nie Q K, et al.Powder Technology, 2023, 416, 118242.
17 Wang Q, Kang S R, Wu L M, et al.Journal of Building Materials, 2020, 23(1), 184 (in Chinese).
王晴, 康升荣, 吴丽梅, 等.建筑材料学报, 2020, 23(1), 184.
18 Wu C Z, Li C, Li Z L, et al.Journal of Materials Science and Engineering, 2024, 42(3), 478 (in Chinese).
吴成志, 李成, 李中林, 等.材料科学与工程学报, 2024, 42(3), 478.
19 Cui W W, Dong X Q, Duan W, et al.Construction and Building Materials, 2024, 418, 135439.
20 An Q, Pan H M, Zhao Q X, et al.Journal of Building Materials, 2023, 26(1), 14 (in Chinese).
安强, 潘慧敏, 赵庆新, 等.建筑材料学报, 2023, 26(1), 14.
21 Li Y J, Duan S Y, Wu H, et al.Bulletin of the Chinese Ceramic Society, 2025, 44(3), 1041(in Chinese).
李钰佳, 段思宇, 吴浩, 等.硅酸盐通报, 2025, 44(3), 1041.
22 Li Z F, Liu C, Wang C, et al.Advanced Engineering Sciences, 2021, 53(1), 203 (in Chinese).
李召峰, 刘超, 王川, 等.工程科学与技术, 2021, 53(1), 203.
23 Shi Y X, Zhao Q X, Xue C H, et al.Cement and Concrete Composites, 2023, 139, 104999.
24 Kong X F, Guo Y, Xue S G, et al.Journal of Cleaner Production, 2017, 143, 224.
25 An Q, Pan H M, Zhao Q X, et al.Construction and Building Materials, 2022, 356, 129279.