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Feasibility of Using Ferronickel Slag as a Sustainable Alternative Aggregate in Hot Mix Asphalt

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  • Lisley Madeira Coelho

    (Department of Fortification and Construction, Military Institute of Engineering-IME, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, Brazil
    These authors contributed equally to this work.)

  • Antônio Carlos Rodrigues Guimarães

    (Department of Fortification and Construction, Military Institute of Engineering-IME, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, Brazil
    These authors contributed equally to this work.)

  • Claudio Rafael Cicuto Landim Alves Moreira

    (Department of Fortification and Construction, Military Institute of Engineering-IME, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, Brazil)

  • Graziella Pereira Pires dos Santos

    (Department of Fortification and Construction, Military Institute of Engineering-IME, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, Brazil
    These authors contributed equally to this work.)

  • Sergio Neves Monteiro

    (Department of Materials Science, Military Institute of Engineering-IME, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, Brazil)

  • Pedro Henrique Poubel Mendonça da Silveira

    (Department of Materials Science, Military Institute of Engineering-IME, Praça General Tibúrcio, 80, Urca, Rio de Janeiro 22290-270, Brazil)

Abstract

Ferronickel slag (FNS) is a byproduct produced during ferronickel alloy manufacturing, primarily used in the manufacturing of stainless steel and iron alloys. This material is produced by cooling molten slag with water or air, posing significant disposal challenges, as improper storage in industrial yards can lead to environmental contamination. This study investigates the chemical and mineralogical characteristics of reduction ferronickel slag (RFNS) and its potential use as an alternative aggregate in hot mix asphalt (HMA). The research is based on the practical application of HMA containing RFNS in an experimental area, specifically the parking lot used by buses transporting employees of Anglo American, located at the Codemin Industrial Unit in Niquelândia, Goiás, Central Brazil. Chemical analysis revealed that RFNS primarily consists of MgO, Fe 2 O 3 , and SiO 2 , which are elements with minimal environmental impact. The lack of significant calcium content minimizes concerns about expansion issues commonly associated with calcium-rich slags. The X-ray diffractogram indicates a predominantly crystalline structure with minerals like Laihunite and Magnetite, which enhances wear and abrasion resistance. HMA containing 40% RFNS was tested using the Marshall methodology, and a small experimental area was subsequently constructed. The HMA containing RFNS met regulatory specifications and technological controls, achieving an average resilient modulus value of 6323 MPa. Visual inspections conducted four years later confirmed that the pavement remained in excellent condition, validating RFNS as a durable and effective alternative aggregate for asphalt mixtures. The successful application of RFNS not only demonstrates its potential for local road paving near industrial areas but also underscores the importance of sustainable waste management solutions. This research highlights the value of academia–industry collaboration in advancing environmentally responsible practices and reinforces the contribution of RFNS to enhancing local infrastructure and promoting a more sustainable future.

Suggested Citation

  • Lisley Madeira Coelho & Antônio Carlos Rodrigues Guimarães & Claudio Rafael Cicuto Landim Alves Moreira & Graziella Pereira Pires dos Santos & Sergio Neves Monteiro & Pedro Henrique Poubel Mendonça da, 2024. "Feasibility of Using Ferronickel Slag as a Sustainable Alternative Aggregate in Hot Mix Asphalt," Sustainability, MDPI, vol. 16(19), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:19:p:8642-:d:1493214
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    References listed on IDEAS

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    1. Satheeskumar Navaratnam & Quddus Tushar & Israt Jahan & Guomin Zhang, 2023. "Environmental Sustainability of Industrial Waste-Based Cementitious Materials: A Review, Experimental Investigation and Life-Cycle Assessment," Sustainability, MDPI, vol. 15(3), pages 1-20, January.
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    Cited by:

    1. Daniel Corrêa Galhardo & Antônio Carlos Rodrigues Guimarães & Camila Antunes Martins & Murilo Miguel Narciso & Sergio Neves Monteiro & Lisley Madeira Coelho, 2024. "Influence of Iron Mining Waste Addition as a Sustainable Alternative on the Resilient and Physical Properties of Soils for Pavement Design," Sustainability, MDPI, vol. 16(23), pages 1-24, November.

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