Improving the sound absorption behaviour of porous concrete using embedded resonant structures
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Título: | Improving the sound absorption behaviour of porous concrete using embedded resonant structures |
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Autor/es: | Pereira, Matheus | Carbajo, Jesús | Godinho, Luís | Ramis-Soriano, Jaime | Amado-Mendes, Paulo |
Grupo/s de investigación o GITE: | Acústica Aplicada |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal |
Palabras clave: | Metaporous concrete | Sound absorption | Porous concrete |
Área/s de conocimiento: | Teoría de la Señal y Comunicaciones |
Fecha de publicación: | mar-2021 |
Editor: | Elsevier |
Cita bibliográfica: | Journal of Building Engineering. 2021, 35: 102015. https://doi.org/10.1016/j.jobe.2020.102015 |
Resumen: | A relatively new concept of sound absorption herein denominated as Metaporous concrete is presented, consisting of a porous concrete-based sound absorber in which different acoustic resonators are embedded. Two finite element models were implemented, using the fluid-equivalent theory to describe Metaporous concrete solutions. A Helmholtz resonator, porous concrete samples, and a Metaporous concrete prototype were built and tested through experimental techniques based on the use of an impedance tube. The fluid-equivalent complex properties were validated with comparisons between analytical predictions and experimental data. The proposed numerical tools were presented as an efficient methodology to predict the sound absorption behavior of Metaporous concrete solutions, where an excellent approach between the simulated results and experimental data is shown. The parametric study shows efficient strategies to increase the sound absorption behavior and to feature the two sound absorption coefficient peaks provided by Metaporous concrete solutions (i. e. from the acoustic resonator and the porous concrete, respectively). The denominated configuration MPCd was highlighted because of the great proximity of these two sound absorption peaks. The inclusion of non-trivial resonant structures in porous concrete, building a Metaporous concrete, can be proposed as an excellent solution to be adopted for noise control in civil engineering exterior applications. |
Patrocinador/es: | This work was financed by COST Action DENORMS CA15125, supported by COST (European Cooperation in Science and Technology). This work was developed within the scope of the POCI-01-0247-FEDER-033990 (iNBRail) Project, funded by FEDER funds through COMPETE 2020, Portugal 2020. The authors also acknowledge funds through FCT – Foundation for Science and Technology within the scope of the project R&D unit “Institute for sustainability Institute for Sustainability and Innovation in Structural Engineering (ISISE) - (UIDP/0409/2020)", and through the Regional Operational Programme CENTRO2020 within the scope of the project CENTRO-01-0145-FEDER-000006. |
URI: | http://hdl.handle.net/10045/112558 |
ISSN: | 2352-7102 |
DOI: | 10.1016/j.jobe.2020.102015 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.jobe.2020.102015 |
Aparece en las colecciones: | INV - Acústica Aplicada - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Pereira_etal_2021_JBuildEng_final.pdf | Versión final (acceso restringido) | 5,65 MB | Adobe PDF | Abrir Solicitar una copia |
Pereira_etal_2021_JBuildEng_accepted.pdf | Accepted Manuscript (acceso abierto) | 3,39 MB | Adobe PDF | Abrir Vista previa |
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