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Acoustical properties of novel sound absorbers made from recycled granulates

Yes / 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.

Identiferoai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/12167
Date07 June 2017
CreatorsKhan, Amir, Mohamed, Mostafa H.A., Al Halo, N., Benkreira, Hadj
Source SetsBradford Scholars
LanguageEnglish
Detected LanguageEnglish
TypeArticle, Accepted manuscript
Rights© 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/)

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