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A Novel Approach for the Reuse of Waste from the Extractive and Processing Industry of Natural Stone Binders: Development of Stone Composites

Author

Listed:
  • Paula Afonso

    (Department of Geosciences, Sciences and Technology School, University of Évora, 7000-671 Évora, Portugal)

  • Vera Pires

    (Department of Geosciences, Sciences and Technology School, University of Évora, 7000-671 Évora, Portugal
    HERCULES Laboratory and IN2PAST, Associate Laboratory for Research and Innovation in Heritage, Arts, Sustainability and Territory, Institute for Advanced Studies and Research, University of Évora, 7000-809 Évora, Portugal)

  • Paula Faria

    (Department of Geosciences, Sciences and Technology School, University of Évora, 7000-671 Évora, Portugal
    GeoBioTec, Department of Geosciences, University of Aveiro, 3810-193 Aveiro, Portugal)

  • Antônio Azzalini

    (Department of Geosciences, Sciences and Technology School, University of Évora, 7000-671 Évora, Portugal)

  • Luis Lopes

    (Department of Geosciences, Sciences and Technology School, University of Évora, 7000-671 Évora, Portugal
    Earth Sciences Institute, Pole of the University of Évora, 7000-671 Évora, Portugal)

  • Paulo Mourão

    (Department of Chemistry and Biochemistry, CHANGE & Mediterranean Institute for Agriculture, Environment and Development, University of Évora, 7000-671 Évora, Portugal)

  • Ruben Martins

    (Department of Geosciences, Sciences and Technology School, University of Évora, 7000-671 Évora, Portugal)

Abstract

This paper discusses the historical use of natural stone for various purposes and highlights the substantial waste generated by quarries and stone processing plants in modern industrialized production. These waste materials are typically categorized into unused rock and sludges from processing. This accumulation of waste presents a global environmental challenge and a financial burden for the stone industry. In-depth investigation into the development of a binder incorporating carbonated sludge from marble and limestone industries, combined with polyester resin, for building stone composites was performed. This research involved chemical and microstructural characterization of the sludges, preparation of mixtures with polyester resin, stone composites manufacturing, and subsequent testing to determine and validate the optimal binder composition. Given the achieved results, and the demonstrated feasibility of using a binder composed of polyester resin and carbonated sludge for stone composite production, it was concluded that employing carbonated sludge as an economic resource is indeed viable.

Suggested Citation

  • Paula Afonso & Vera Pires & Paula Faria & Antônio Azzalini & Luis Lopes & Paulo Mourão & Ruben Martins, 2023. "A Novel Approach for the Reuse of Waste from the Extractive and Processing Industry of Natural Stone Binders: Development of Stone Composites," Sustainability, MDPI, vol. 16(1), pages 1-17, December.
    • Handle: RePEc:gam:jsusta:v:16:y:2023:i:1:p:64-:d:1304129
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