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Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content

Author

Listed:
  • Shem Saldia

    (Environmental Science Graduate Program, College of Science and Mathematics, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Hernando Bacosa

    (Environmental Science Graduate Program, College of Science and Mathematics, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Maria Cristina Vegafria

    (College of Engineering and Technology, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Joshua Zoleta

    (College of Engineering and Technology, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines
    Chemical Resources Laboratory, Division of Sustainable Engineering, Hokkaido University, Sapporo 060-0808, Japan)

  • Naoki Hiroyoshi

    (Chemical Resources Laboratory, Division of Sustainable Engineering, Hokkaido University, Sapporo 060-0808, Japan)

  • Ernesto Empig

    (College of Computer Studies, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Christian Calleno

    (Environmental Science Graduate Program, College of Science and Mathematics, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Wilyneth Cantong

    (Environmental Science Graduate Program, College of Science and Mathematics, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Ephraim Ibarra

    (College of Engineering and Technology, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

  • Maricar Aguilos

    (Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA)

  • Ruben Amparado

    (Environmental Science Graduate Program, College of Science and Mathematics, Mindanao State University—Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines
    Terrestrial Biodiversity Laboratory, Premier Research Institute of Science and Mathematics (PRISM), Mindanao State University–Iligan Institute of Technology, Iligan City 9200, Lanao del Norte, Philippines)

Abstract

Quarry waste fines and eggshells are unavoidable wastes which relentlessly contribute to environmental loads and pollution. Although many studies have suggested various methods for recycling, these wastes remain underutilized due to some technical constraints. In addition, no study has yet explored the possibility of combining quarry waste fines (QWF) and eggshell powder (ESP) for tobermorite synthesis. Tobermorite is the main component which primarily provides strength to autoclaved aerated concrete products. With this in mind, this study seeks to evaluate the potential of QWF-ESP mix at 10%, 15%, and 20% amounts of cement, respectively. The XRF, XRD, and TGA–DTA techniques were used to characterize the waste materials, while physical and mechanical property tests and XRD analysis were performed on the autoclaved samples. It was found that QWF contains 53.77% SiO 2 and ESP contains 97.8% CaO which are key components for tobermorite synthesis. This study also revealed that the mixture with only 10% cement has the highest compressive strength among the QWF-ESP samples. Furthermore, the formation of tobermorite in the samples was confirmed through XRD analysis. Hence, the hydrothermal curing of QWF-ESP can be further developed to produce functional tobermorite-bearing materials.

Suggested Citation

  • Shem Saldia & Hernando Bacosa & Maria Cristina Vegafria & Joshua Zoleta & Naoki Hiroyoshi & Ernesto Empig & Christian Calleno & Wilyneth Cantong & Ephraim Ibarra & Maricar Aguilos & Ruben Amparado, 2024. "Combined Potential of Quarry Waste Fines and Eggshells for the Hydrothermal Synthesis of Tobermorite at Varying Cement Content," Sustainability, MDPI, vol. 16(6), pages 1-16, March.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:6:p:2401-:d:1356768
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