<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>According to the Waste Management Policy of the European Union, the recycling and reuse of various wastes is considered the most environmentally friendly and advanced waste disposal technology that has the least impact on the environment. By applying the principles of the Circular Economy, plastic waste will extend its life cycle and will be used as secondary materials to create metamaterial structures with improved sound absorption and insulation properties. The aim of this study was to determine plastic potential for use in acoustic structures. Acoustic metamaterial resonators, created from plastic, were measured in an impedance tube according to standards ISO 10534-2 for their sound absorbing and ASTM E2611 for their insulating properties. Two types of plastic, PLA and recycled PET-G, were used in acoustic metamaterial 3D printing process. For sound insulation, combined resonator systems were used to control symmetrical wall sound resonance. Sound absorption of both PLA and PET-G metamaterials were peaking at 1600 Hz with 0.93 and 0.89 sound absorption coefficient, respectfully. The results showed that combined constructions with plastic metamaterials can be integrated into building structures and used as an alternative for improving building acoustics, reducing indoor noise and reverberation time.</p>
</abstract>

According to the Waste Management Policy of the European Union, the recycling and reuse of various wastes is considered the most environmentally friendly and advanced waste disposal technology that has the least impact on the environment. By applying the principles of the Circular Economy, plastic waste will extend its life cycle and will be used as secondary materials to create metamaterial structures with improved sound absorption and insulation properties. The aim of this study was to determine plastic potential for use in acoustic structures. Acoustic metamaterial resonators, created from plastic, were measured in an impedance tube according to standards ISO 10534-2 for their sound absorbing and ASTM E2611 for their insulating properties. Two types of plastic, PLA and recycled PET-G, were used in acoustic metamaterial 3D printing process. For sound insulation, combined resonator systems were used to control symmetrical wall sound resonance. Sound absorption of both PLA and PET-G metamaterials were peaking at 1600 Hz with 0.93 and 0.89 sound absorption coefficient, respectfully. The results showed that combined constructions with plastic metamaterials can be integrated into building structures and used as an alternative for improving building acoustics, reducing indoor noise and reverberation time.

Integration of Acoustic Metamaterials Made of Plastic to Improve Building Acoustics

Department of Environmental Protection and Water Engineering

Environmental and Climate Technologies

This work is licensed under the Creative Commons Attribution 4.0 International License.

According to the Waste Management Policy of the European Union, the recycling and reuse of various wastes is considered the most environmentally friendly and...

Integration of Acoustic Metamaterials Made of Plastic to Improve Building Acoustics

Published Online: Jun 24, 2024

Page range: 208 - 220

Received: Mar 26, 2024

Accepted: Apr 29, 2024

DOI: https://doi.org/10.2478/rtuect-2024-0017

Keywords
Circular economy, plastic waste, resonator, sound absorption coefficient, sound transmission loss, waste management

© 2024 Andrej Naimušin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Integration of Acoustic Metamaterials Made of Plastic to Improve Building Acoustics

Published Online: Jun 24, 2024

Page range: 208 - 220

Received: Mar 26, 2024

Accepted: Apr 29, 2024

DOI: https://doi.org/10.2478/rtuect-2024-0017

KeywordsCircular economy, plastic waste, resonator, sound absorption coefficient, sound transmission loss, waste management

© 2024 Andrej Naimušin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Circular economy, plastic waste, resonator, sound absorption coefficient, sound transmission loss, waste management