Acoustic Panels Made of Paper Sludge and Clay Composites

Tomas Astrauskas, Tomas Januševičius and Raimondas Grubliauskas
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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

Sustainability, 2021, vol. 13, issue 2, 1-10

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).

Keywords: paper sludge; clay; composite materials; recycling; sound absorption; acoustic materials; noise control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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