Development of an Eco-Acoustic Absorber Based on Local Recycled Granular Materials

Authors

  • Islam Ben Amara Université de Sherbrooke, Québec, Canada, CA
  • Raymond Panneton Université de Sherbrooke, Québec, Canada, CA
  • Richard Gagné Université de Sherbrooke, Québec, Canada, CA

Abstract

Enhancing the acoustic absorption performance across a wide frequency band can be processed through improving the selection of raw materials. In the field of acoustics, there is a growing shift towards eco-friendly resources to mitigate environmental and economic impacts. The use of recycled granular materials of local origin requires special attention to the granulometry and the optimal combinations of grain sizes. This study focuses on two key aspects: investigating the consolidation of granules as well as creating and testing monodispersed and bi-dispersed granular test specimens using different proportions of granules. The diameter range of particles is fixed between 250 μm and 2 mm. The properties of the samples are characterized using direct measurement methods, which enables the assessment of various properties such as porosity, resistivity, bulk density and absorption coefficient. The results show promising improvements in acoustic absorption performance, with the exception of anti-resonant dips. To remedy these dips and achieve broadband absorption, an experimental approach is proposed where the relationship between resistivity ratios, cementitious binder content and particle diameters are optimized. This approach aims to fine-tune the parameters and achieve a more balanced acoustic absorption profile.Keywords: sound absorption, granular material, recycled material, eco-friendly material, granulometry, experimental approach, material properties.

Additional Files

Published

2023-10-09

How to Cite

1.
Ben Amara I, Panneton R, Gagné R. Development of an Eco-Acoustic Absorber Based on Local Recycled Granular Materials. Canadian Acoustics [Internet]. 2023 Oct. 9 [cited 2024 May 15];51(3):120-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/4072

Issue

Vol. 51 No. 3 (2023): Proceedings of Acoustics Week in Canada 2023 Conference

Section

Proceedings of the Acoustics Week in Canada

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.

Most read articles by the same author(s)

1 2 3 4 > >>