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Title: Acoustic Panels Made of Paper Sludge and Clay Composites
Authors: Astrauskas, Tomas
Januševičius, Tomas
Grubliauskas, Raimondas
Keywords: paper sludge
composite materials
sound absorption
acoustic materials
noise control
Issue Date: 2021
Publisher: MDPI
Citation: Astrauskas, T.; Januševičius, T.; Grubliauskas, R. Acoustic Panels Made of Paper Sludge and Clay Composites. Sustainability 2021, 13, 637.
Series/Report no.: 13;2
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 (αavg. 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 (αavg. = 0.51).
Description: This article belongs to the Section Sustainable Materials
ISSN: 2071-1050
Appears in Collections:Moksliniai straipsniai / Research articles

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