Sound-Absorption Properties of Materials Made of Esparto Grass Fibers

Jorge P. Arenas, Romina del Rey, Jesús Alba and Roberto Oltra
Additional contact information
Jorge P. Arenas: Institute of Acoustics, University Austral of Chile, PO Box 567, Valdivia 5090000, Chile
Romina del Rey: Centro de Tecnologías Físicas, Universitat Politècnica de València, EPS Gandia, C/Paranimf, 1, Grao de Gandia, 46730 Valencia, Spain
Jesús Alba: Centro de Tecnologías Físicas, Universitat Politècnica de València, EPS Gandia, C/Paranimf, 1, Grao de Gandia, 46730 Valencia, Spain
Roberto Oltra: Universitat Politècnica de València, EPS Gandia, C/Paranimf, 1, Grao de Gandia, 46730 Valencia, Spain

Sustainability, 2020, vol. 12, issue 14, 1-10

Abstract: Research on sound-absorbing materials made of natural fibers is an emerging area in sustainable materials. In this communication, the use of raw esparto grass as an environmentally friendly sound-absorbing material is explored. Measurements of the normal-incidence sound-absorption coefficient and airflow resistivity of three different types of esparto from different countries are presented. In addition, the best-fit coefficients for reasonable prediction of the sound-absorption performance by means of simple empirical formulae are reported. These formulae require only knowledge of the airflow resistivity of the fibrous material. The results presented in this paper are an addition to the characterization of available natural fibers to be used as alternatives to synthetic ones in the manufacturing of sound-absorbing materials.

Keywords: sound absorption; esparto; natural fibers; acoustic materials (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:12:y:2020:i:14:p:5533-:d:382176

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