Characterisation of magnesite mine tailings as a construction material

Shanmugasundaram, Vinodhkumar; Shanmugam, Balaji

doi:10.1007/s11356-021-13890-x

Environ Sci Pollut Res

2021

DOI: 10.1007/s11356-021-13890-x

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Characterisation of magnesite mine tailings as a construction material

Vinodhkumar Shanmugasundaram

Balaji Shanmugam

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Cited by 12 publications

(2 citation statements)

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“…According to the UN Sustainable Development Goals, landfills are at the bottom of the waste hierarchy [28]. Dumping mine waste in nearby lands creates serious environmental hazards like land and water pollution, making the surrounding lands unfit for agriculture [29,30]. Mine waste stocking also risks human health because of its environmental impact [31].…”

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Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO₂ emission

Shunmuga Vembu,

Ammasi

2024

Mater. Res. Express

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Managing waste materials from mining is of universal interest owing to its massive volume, ecological impacts, health hazards, and disposal challenges despite high operational costs. Advancements advocate for recycling mine waste to sustainably support construction. As the construction sector heavily consumes resources, utilizing mine waste from magnesite mines (MMW) in concrete has gained attention. This experimental study assesses the viability of substituting MMW for natural fine and coarse aggregates in self-compacting concrete (SCC) at intervals of 10% up to 50% by weight. Evaluations were done on fresh (slump flow, T50 slump, V-funnel, J-ring, L-box) and hardened (compressive, splitting tensile, and flexural strength) properties, along with microstructural features, cost, and CO2 emissions. The findings unveil that nearly all mixtures exhibit commendable performance, where mine waste is replaced for fine and coarse aggregates showcasing superior fresh and hardened properties, respectively. Fresh property results reveal the SF1 flow category with VF1 and VF2 viscosity types for the SCC mixtures. Moreover, these SCC mixtures observed substantial strength enhancements of approximately 10% to 15% in compressive, splitting tensile and flexural test results at 28 and 90 days. Microstructural analysis corroborates the observed strength outcomes, indicating a denser concrete matrix. Significant environmental and economic benefits were observed, including a notable 20% reduction in CO2 emissions and 17% cost savings. These findings underscore the potential of integrating MMW into SCC mixtures as a sustainable approach towards construction materials, offering both performance and environmental advantages.

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“…Shanmugasundaram and Shanmugam (2021) reported that MMT consists of stones and sand-like particles suitable as building materials. Additionally, the alkalinity, pH and specific gravity suit MMT's application in reinforced concrete (RC) and embankment-filling material [30].…”

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confidence: 99%

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO₂ emission

Shunmuga Vembu,

Ammasi

2024

Mater. Res. Express

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Upcycling of wastes for sustainable controlled low-strength material: A review on strength and excavatability

Kaliyavaradhan

Ling

Guo

2022

Environ Sci Pollut Res

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Comparison of the leaching characteristics of magnesium-rich dust-polluted soil in Northeast China treated with PAM and citric acid

et al. 2023

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Characterisation of magnesite mine tailings as a construction material

Cited by 12 publications

References 39 publications

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO₂ emission

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO₂ emission

Upcycling of wastes for sustainable controlled low-strength material: A review on strength and excavatability

Comparison of the leaching characteristics of magnesium-rich dust-polluted soil in Northeast China treated with PAM and citric acid

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Characterisation of magnesite mine tailings as a construction material

Cited by 12 publications

References 39 publications

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO2 emission

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO2 emission

Upcycling of wastes for sustainable controlled low-strength material: A review on strength and excavatability

Comparison of the leaching characteristics of magnesium-rich dust-polluted soil in Northeast China treated with PAM and citric acid

Contact Info

Product

Resources

About

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO₂ emission

Sustainable use of magnesite mine waste in self-compacting concrete and its study on strength, microstructure, cost and CO₂ emission