Bio-based and waste-based sound absorbing materials

Journal title RIVISTA ITALIANA DI ACUSTICA
Author/s Chiara Rubino, Stefania Liuzzi, Francesco Martellotta
Publishing Year 2025 Issue 2025/2
Language Italian Pages 12 P. 9-20 File size 0 KB
DOI 10.3280/riaof-2025oa20130
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To reduce the environmental impact associated with the use of non-renewable resources, increasing attention is being paid to alternative raw materials for the production of sustainable sound-absorbing panels. In this context, European directives promote innovative construction solutions aimed not only at minimizing environmental impact but also at improving the efficiency of both new and existing buildings. Aligned with circular economy principles, this study presents an experimental investigation on the acoustic performance expressed in terms of sound absorption coefficients under normal incidence and in diffuse field of innovative composite materials produced from natural products and waste. The results show good sound absorption performance for all tested samples, with variations linked to microstructural properties such as porosity or airf low resistivity.

Keywords: sound absorption;waste;natural binders;sustainability

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Chiara Rubino, Stefania Liuzzi, Francesco Martellotta, Materiali fonoassorbenti bio-based e a base di scarti in "RIVISTA ITALIANA DI ACUSTICA" 2/2025, pp 9-20, DOI: 10.3280/riaof-2025oa20130