IDEAS home Printed from https://ideas.repec.org/a/plo/pone00/0314617.html
   My bibliography  Save this article

Mechanical properties of fibre-reinforced geopolymer-cemented tailings used as backfill

Author

Listed:
  • Xueqiang Sha
  • Chao Cheng
  • Guoyong Pan
  • Zitao Zhu
  • Chunxiao Qi
  • Weidong Chen

Abstract

Backfill materials are used in underground engineering to fill voids and buried excavated parts. In this study, solid waste was utilised as a raw material mixed with different amounts of polypropylene fibres to determine the optimal sodium hydroxide content, water—solid ratio, and fibre content. The uniaxial compressive strength (UCS) of the produced backfill materials was measured, and the interfacial structures were analysed via scanning electron microscopy. The results revealed that the mechanical properties of the backfill materials were influenced in the order sodium hydroxide doping > water—solid ratio > fibre doping. The optimal material composition corresponded to a sodium hydroxide content of 3%, water—solid ratio of 0.28, and fibre content of 5 ‰. The slag produced a C—S–H gel. Meanwhile, the fly ash and gangue contained large amounts of aluminium, which formed hydrated aluminosilicates. The addition of polypropylene fibres reduced the number of internal defects in the backfill structure and increased the UCS.

Suggested Citation

  • Xueqiang Sha & Chao Cheng & Guoyong Pan & Zitao Zhu & Chunxiao Qi & Weidong Chen, 2024. "Mechanical properties of fibre-reinforced geopolymer-cemented tailings used as backfill," PLOS ONE, Public Library of Science, vol. 19(12), pages 1-24, December.
    • Handle: RePEc:plo:pone00:0314617
    DOI: 10.1371/journal.pone.0314617
    as

    Download full text from publisher

    File URL: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0314617
    Download Restriction: no
    File URL: https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0314617&type=printable
    Download Restriction: no
    File URL: https://libkey.io/10.1371/journal.pone.0314617?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Vilaça, A.S.I. & Simão, L. & Montedo, O.R.K. & Novaes de Oliveira, A.P. & Raupp-Pereira, F., 2022. "Waste valorization of iron ore tailings in Brazil: Assessment metrics from a circular economy perspective," Resources Policy, Elsevier, vol. 75(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yıldız, Taşkın Deniz & Güner, Mehmet Oğuz & Kural, Orhan, 2024. "Effects of EU-Compliant mining waste regulation on Turkish mining sector: A review of characterization, classification, storage, management, recovery of mineral wastes," Resources Policy, Elsevier, vol. 90(C).
    2. Acordi, J. & Simão, L. & Faraco, M.N.S. & Borgert, C.H. & Olivo, E. & Montedo, O.R.K. & Raupp-Pereira, F., 2023. "Waste valorization of coal mining waste from a circular economy perspective: A Brazilian case study based on environmental and physicochemical features," Resources Policy, Elsevier, vol. 80(C).
    3. Upadhyay, Saurabh, 2022. "Drivers for sustainable mining waste management – A mixed-method study on the Indian Mining Industry," Resources Policy, Elsevier, vol. 79(C).
    4. Nicolas Bijon & Juliette Cerceau & Magali Dechesne & Guillaume Junqua & Tom Wassenaar, 2022. "What and why? Exploring rational myths of industrial symbioses in French case studies," Post-Print hal-03712860, HAL.
    5. Yıldız, Taşkın Deniz, 2024. "Considering the development levels of countries, contributions of mineral recovery from mining tailings and urban mining wastes to sustainability criteria – A review," Resources Policy, Elsevier, vol. 99(C).
    6. Diana Méndez & Fredy Guzmán-Martínez & Mauricio Acosta & Luis Collahuazo & Danilo Ibarra & Luis Lalangui & Samantha Jiménez-Oyola, 2022. "Use of Tailings as a Substitute for Sand in Concrete Blocks Production: Gravimetric Mining Wastes as a Case Study," Sustainability, MDPI, vol. 14(23), pages 1-14, December.
    7. Mustapha Amrani & Yassine Taha & Azzouz Kchikach & Mostafa Benzaazoua & Rachid Hakkou, 2022. "Field and Economic Studies on Mine Waste: Sustainable Reuse as Aggregates for Low Traffic Pavement Structure," Sustainability, MDPI, vol. 14(19), pages 1-19, October.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:plo:pone00:0314617. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: plosone (email available below). General contact details of provider: https://journals.plos.org/plosone/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.