Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization
A growing research interest currently exists in the use of paper as a building material. This work aims to present the results of a measurement campaign developed on innovative waste paper-based building components. The research was carried out in Southern Italy and used some local by-product aggreg...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/8/4710 |
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| author | Stefania Liuzzi Chiara Rubino Francesco Martellotta Pietro Stefanizzi |
| author_facet | Stefania Liuzzi Chiara Rubino Francesco Martellotta Pietro Stefanizzi |
| author_sort | Stefania Liuzzi |
| collection | DOAJ |
| description | A growing research interest currently exists in the use of paper as a building material. This work aims to present the results of a measurement campaign developed on innovative waste paper-based building components. The research was carried out in Southern Italy and used some local by-product aggregates. Three different mixture designs were developed in the laboratory by adding three kinds of biomass to a pulp paper blend: fava bean residues (FB), sawdust powder (SP) and coffee grains (CG) extracted from exhausted chaffs. A physical characterization was carried out measuring the bulk density and bulk porosity. Scanning Electron Microscopy (SEM) analysis of the single aggregates was followed by a microstructure analysis of the final components. Bulk density evaluation showed a range between 200 and 348 kg·m<sup>−3</sup>. Furthermore, thermal performances were measured; the thermal conductivity of the experimented samples ranged from 0.071 to 0.093 W·m<sup>−1</sup>·K<sup>−1</sup>, thus it is possible to classify the tested materials as thermal insulators. Moreover, the acoustic properties were evaluated and tested. The normal incidence sound absorption coefficient was measured by the impedance tube on cylindrical specimens. In general, a different behavior was observed between the upper and lower base of each specimen due to the manufacturing process and the shrinkage caused by the different interactions occurring between the aggregates and the pulp paper waste; for example, the presence of sawdust reduced shrinkage in the final specimens, with consequent smaller physical variations among the two faces. The correlation existing between the manufacturing process and the microstructural properties was also investigated by the estimation of the non-acoustical parameters using the inverse method and taking into account the JCA (Johnson, Champoux and Allard) model as a reference. |
| first_indexed | 2024-03-11T05:16:33Z |
| format | Article |
| id | doaj.art-047a95395fca48078838305aa4db4615 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T05:16:33Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-047a95395fca48078838305aa4db46152023-11-17T18:08:06ZengMDPI AGApplied Sciences2076-34172023-04-01138471010.3390/app13084710Sustainable Materials from Waste Paper: Thermal and Acoustical CharacterizationStefania Liuzzi0Chiara Rubino1Francesco Martellotta2Pietro Stefanizzi3Dipartimento di Architettura, Costruzione e Design, Politecnico di Bari, 70125 Bari, ItalyDipartimento di Architettura, Costruzione e Design, Politecnico di Bari, 70125 Bari, ItalyDipartimento di Architettura, Costruzione e Design, Politecnico di Bari, 70125 Bari, ItalyDipartimento di Architettura, Costruzione e Design, Politecnico di Bari, 70125 Bari, ItalyA growing research interest currently exists in the use of paper as a building material. This work aims to present the results of a measurement campaign developed on innovative waste paper-based building components. The research was carried out in Southern Italy and used some local by-product aggregates. Three different mixture designs were developed in the laboratory by adding three kinds of biomass to a pulp paper blend: fava bean residues (FB), sawdust powder (SP) and coffee grains (CG) extracted from exhausted chaffs. A physical characterization was carried out measuring the bulk density and bulk porosity. Scanning Electron Microscopy (SEM) analysis of the single aggregates was followed by a microstructure analysis of the final components. Bulk density evaluation showed a range between 200 and 348 kg·m<sup>−3</sup>. Furthermore, thermal performances were measured; the thermal conductivity of the experimented samples ranged from 0.071 to 0.093 W·m<sup>−1</sup>·K<sup>−1</sup>, thus it is possible to classify the tested materials as thermal insulators. Moreover, the acoustic properties were evaluated and tested. The normal incidence sound absorption coefficient was measured by the impedance tube on cylindrical specimens. In general, a different behavior was observed between the upper and lower base of each specimen due to the manufacturing process and the shrinkage caused by the different interactions occurring between the aggregates and the pulp paper waste; for example, the presence of sawdust reduced shrinkage in the final specimens, with consequent smaller physical variations among the two faces. The correlation existing between the manufacturing process and the microstructural properties was also investigated by the estimation of the non-acoustical parameters using the inverse method and taking into account the JCA (Johnson, Champoux and Allard) model as a reference.https://www.mdpi.com/2076-3417/13/8/4710thermal propertiesacoustic performancespaper wastesustainabilityenergy efficiencycircular economy |
| spellingShingle | Stefania Liuzzi Chiara Rubino Francesco Martellotta Pietro Stefanizzi Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization Applied Sciences thermal properties acoustic performances paper waste sustainability energy efficiency circular economy |
| title | Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization |
| title_full | Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization |
| title_fullStr | Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization |
| title_full_unstemmed | Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization |
| title_short | Sustainable Materials from Waste Paper: Thermal and Acoustical Characterization |
| title_sort | sustainable materials from waste paper thermal and acoustical characterization |
| topic | thermal properties acoustic performances paper waste sustainability energy efficiency circular economy |
| url | https://www.mdpi.com/2076-3417/13/8/4710 |
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