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<p>To create a lightweight and sustainable artificial stone, nepheline syenite mining waste (NSW) was utilized as a mineral filler in a resin matrix. The material was compacted by cold pressing, a method simpler and less expensive than traditional techniques for artificial stone production. Furthermore, it resulted in a lightweight material, which can lead to reduced transportation costs and facilitate its use in construction projects. Specimens were prepared using NSW and polyester or epoxy resins at 10 wt.% and 20 wt.%, and analyzed for water absorption, apparent density, apparent porosity, void content, compressive strength, scanning electron microscopy, and chemical resistance. The findings indicated that a 20% resin content resulted in denser materials, with strengths within the 23–33&#xa0;MPa range. The epoxy exhibited superior adhesion and coating of the NSW particles in comparison to the polyester. Consequently, the stones produced with epoxy at a 20% content exhibited satisfactory properties for the intended application. These included low water absorption (0.17 ± 0.09%) and apparent porosity (0.32 ± 0.16%), sufficient strength, adequate resistance to chemical agents, and lower density (1.85 ± 0.01&#xa0;g/cm<sup>3</sup>) in comparison to traditional artificial stones (2.10–2.40&#xa0;g/cm<sup>3</sup>). This makes it a composite with suitable properties for the use as a coating stone.</p>

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Sustainable Lightweight Artificial Coating Stone Developed with Nepheline Syenite Mining Waste as Filler in Resin Matrix

  • 期刊论文

  • 发表日期：

    2025年2月18日

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  • Juliana Acordi,
  • Carlos H. Borgert,
  • Fabrício B. Peres,
  • Renata Bochanóski,
  • Diego Haltiery,
  • Eduarda F. Olivo,
  • Matheus V. G. Zimmermann,
  • Fabiano Raupp-Pereira

摘要

To create a lightweight and sustainable artificial stone, nepheline syenite mining waste (NSW) was utilized as a mineral filler in a resin matrix. The material was compacted by cold pressing, a method simpler and less expensive than traditional techniques for artificial stone production. Furthermore, it resulted in a lightweight material, which can lead to reduced transportation costs and facilitate its use in construction projects. Specimens were prepared using NSW and polyester or epoxy resins at 10 wt.% and 20 wt.%, and analyzed for water absorption, apparent density, apparent porosity, void content, compressive strength, scanning electron microscopy, and chemical resistance. The findings indicated that a 20% resin content resulted in denser materials, with strengths within the 23–33 MPa range. The epoxy exhibited superior adhesion and coating of the NSW particles in comparison to the polyester. Consequently, the stones produced with epoxy at a 20% content exhibited satisfactory properties for the intended application. These included low water absorption (0.17 ± 0.09%) and apparent porosity (0.32 ± 0.16%), sufficient strength, adequate resistance to chemical agents, and lower density (1.85 ± 0.01 g/cm3) in comparison to traditional artificial stones (2.10–2.40 g/cm3). This makes it a composite with suitable properties for the use as a coating stone.