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Scientific papers

2025: Online first

Bio-based and waste-based sound absorbing materials

DOI
https://doi.org/10.3280/riaof-2025oa20130
Submitted
maggio 14, 2025
Published
2025-09-26

Abstract

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.

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