文章基本信息

标题：Acoustic Panels Made of Paper Sludge and Clay Composites
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作者：Tomas Astrauskas ; Tomas Januševičius ; Raimondas Grubliauskas 等
期刊名称：Sustainability
印刷版ISSN：2071-1050
出版年度：2021
卷号：13
期号：2
页码：637
DOI：10.3390/su13020637
语种：English
出版社：MDPI, Open Access Journal
摘要：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<sub>avg</sub>. 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<sub>avg</sub>. = 0.51).