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Acoustic Panels Made of Paper Sludge and Clay Composites

Author

Listed:
  • Tomas Astrauskas

    (Department of Environmental Protection and Water Engineering, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10221 Vilnius, Lithuania)

  • Tomas Januševičius

    (Research Institute of Environmental Protection, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10221 Vilnius, Lithuania)

  • Raimondas Grubliauskas

    (Department of Environmental Protection and Water Engineering, Vilnius Gediminas Technical University, Saulėtekio al. 11, 10221 Vilnius, Lithuania)

Abstract

Studies on recycled materials emerged during recent years. This paper investigates samples’ sound absorption properties for panels fabricated of a mixture of paper sludge (PS) and clay mixture. PS was the core material. The sound absorption was measured. We also consider the influence of an air gap between panels and rigid backing. Different air gaps (50, 100, 150, 200 mm) simulate existing acoustic panel systems. Finally, the PS and clay composite panel sound absorption coefficients are compared to those for a typical commercial absorptive ceiling panel. The average sound absorption coefficient of PS-clay composite panels (α avg . in the frequency range from 250 to 1600 Hz) was up to 0.55. The resulting average sound absorption coefficient of panels made of recycled (but unfinished) materials is even somewhat higher than for the finished commercial (finished) acoustic panel (α avg . = 0.51).

Suggested Citation

  • Tomas Astrauskas & Tomas Januševičius & Raimondas Grubliauskas, 2021. "Acoustic Panels Made of Paper Sludge and Clay Composites," Sustainability, MDPI, vol. 13(2), pages 1-10, January.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:2:p:637-:d:478395
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    References listed on IDEAS

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    1. Jorge P. Arenas & Romina del Rey & Jesús Alba & Roberto Oltra, 2020. "Sound-Absorption Properties of Materials Made of Esparto Grass Fibers," Sustainability, MDPI, vol. 12(14), pages 1-10, July.
    2. Kolbl, Sabina & Forte-Tavčer, Petra & Stres, Blaž, 2017. "Potential for valorization of dehydrated paper pulp sludge for biogas production: Addition of selected hydrolytic enzymes in semi-continuous anaerobic digestion assays," Energy, Elsevier, vol. 126(C), pages 326-334.
    3. Tomáš Ulrich & Jorge P. Arenas, 2020. "Sound Absorption of Sustainable Polymer Nanofibrous Thin Membranes Bonded to a Bulk Porous Material," Sustainability, MDPI, vol. 12(6), pages 1-15, March.
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    Cited by:

    1. Olga Khrystoslavenko & Tomas Astrauskas & Raimondas Grubliauskas, 2023. "Sound Absorption Properties of Charcoal Made from Wood Waste," Sustainability, MDPI, vol. 15(10), pages 1-13, May.
    2. Robert Ružickij & Olga Kizinievič & Raimondas Grubliauskas & Tomas Astrauskas, 2023. "Development of Composite Acoustic Panels of Waste Tyre Textile Fibres and Paper Sludge," Sustainability, MDPI, vol. 15(3), pages 1-19, February.
    3. Olga Khrystoslavenko & Raimondas Grubliauskas, 2022. "Investigation of Acoustic Efficiency of Wood Charcoal in Impedance Tube for Usage in Sound-Reflective Devices," Sustainability, MDPI, vol. 14(15), pages 1-11, August.

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