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Acoustical properties of novel sound absorbers made from recycled granulates
Khan, Amir Mohamed, Mostafa H.A. Al Halo, N.
Khan, Amir
Mohamed, Mostafa H.A.
Al Halo, N.
Publication Date
2017-12-01
End of Embargo
Supervisor
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/)
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2017-05-29
Institution
Department
Awarded
Embargo end date
Additional title
Abstract
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 manuscript
Citation
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.
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Type
Article