Acoustical properties of novel sound absorbers made from recycled granulates

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2017-12-01Rights
© 2017 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the Creative Commons CC-BYNC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/)Peer-Reviewed
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openAccessAccepted for publication
2017-05-29
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This study investigates the acoustic performance of materials made using various amounts of bio-binder (cis-1,4-polyisoprene). The filler used in making these materials was from recycled tyres which consist of nylon 6,6 fibres bonded to rubber grains known as tyre shred residue (TSR). The materials have shown high acoustical performance especially at low binder levels, due mainly to the open porosity of the tested samples. The paper begins with a discussion of materials made using recycled granulates. The macroscopic properties (e.g. flow resistivity, porosity, tortuosity, etc.) that control the acoustical behaviour of these materials are then defined as are methods for their measurements. The acoustical characterisation of porous media is considered next, followed by discussion of the acoustic performance of the materials. The characteristics of these novel materials are illustrated through experimental and theoretical models involving sound absorption and transmission.Version
Accepted manuscriptCitation
Khan A, Mohamed M, Al Halo N et al (2017) Acoustical properties of novel sound absorbers made from recycled granulates. Applied Acoustics. 127: 80-88.Link to Version of Record
https://doi.org/10.1016/j.apacoust.2017.05.035Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1016/j.apacoust.2017.05.035