A critical review of iron ore tailings as cement and aggregate substitutes for robust infrastructure: Mechanical, durability, eco-economic, and social impacts

IF 9.7 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Cleaner Production Pub Date : 2025-01-25 DOI:10.1016/j.jclepro.2025.144853

Hassan Amjad , El-Sayed Abd-Elaal , Xing Ma , Tom Benn , Mark Fisher

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Abstract

The incorporation of mine tailings in cement mixtures is receiving continuous attention due to the considerable amount being produced during ore processing. Iron ore tailings (IOT) show great potential in this regard. Numerous studies have evaluated their use both as supplementary cementitious material (SCM) and as aggregates. This paper provides a comprehensive overview of the utilisation of IOT in cementitious composites, focusing on the various methods used to activate IOT and examining the durability along with mechanical properties of IOT-based cement mixtures. The findings indicate that while IOT has potential as a cement alternative, its inert crystalline structure requires activation. On the other hand, substituting IOT as fine aggregates enhances mechanical and durability properties. However, to avoid performance degradation, its replacement should be limited to 25%. Additionally, it summarises the environmental, economic, and social viability of using IOT in construction and presents current challenges and future research recommendations. Overall, IOT can be effectively utilised in cementitious composites, particularly as a replacement for natural aggregates, without significant losses.

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铁矿砂作为水泥和骨料替代品对坚固基础设施的重要影响：机械、耐久性和社会经济影响

由于在矿石加工过程中会产生相当数量的尾矿，因此在水泥混合物中掺入尾矿的问题一直受到关注。铁矿尾矿（IOT）在这方面显示出巨大的潜力。许多研究已经评估了它们作为补充胶凝材料（SCM）和骨料的用途。本文全面概述了物联网在胶凝复合材料中的应用，重点介绍了用于激活物联网的各种方法，并研究了物联网水泥混合物的耐久性和机械性能。研究结果表明，虽然物联网具有作为水泥替代品的潜力，但其惰性晶体结构需要激活。另一方面，用物联网代替细骨料可以提高机械性能和耐久性。然而，为了避免性能下降，它的替换应该限制在25%。此外，它还总结了在建筑中使用物联网的环境、经济和社会可行性，并提出了当前的挑战和未来的研究建议。总的来说，物联网可以有效地用于胶凝复合材料，特别是作为天然骨料的替代品，而不会造成重大损失。

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来源期刊

Journal of Cleaner Production 环境科学-工程：环境

CiteScore

20.40

自引率

9.00%

发文量

4720

审稿时长

111 days

期刊介绍： The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.