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Article

Spent Coffee Grounds as Building Material for Non-Load-Bearing Structures

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Matériaux et Ingénierie Mécanique (MATIM), University of Reims Champagne Ardenne, CEDEX 2, 51687 Reims, France
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Structure Fédérative de Recherche Condorcet FR CNRS 3417, University of Reims Champagne Ardenne, 51100 Reims, France
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Institut de Chimie Moléculaire de Reims, ICMR-UMR 7312 CNRS, University of Reims Champagne Ardenne, CEDEX 2, 51687 Reims, France
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Pôle de Recherche Châlonnais, Université de Reims Champagne-Ardenne, 51000 Châlons-en-Champagne, France
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Instituto SocioAmbiental e dos Recursos Hidricos (ISARH), Universidade Federal Rural da Amazônia, 2150-Curio Utinga, Belém 66077, Brazil
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Instituto de Ciências Agrácias (ICA), Universidade Federal Rural da Amazônia, 2150-Curio Utinga, Belém 66077, Brazil
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Author to whom correspondence should be addressed.
Academic Editors: Lizhi Sun and F. Pacheco Torgal
Materials 2022, 15(5), 1689; https://doi.org/10.3390/ma15051689
Received: 11 January 2022 / Revised: 19 February 2022 / Accepted: 22 February 2022 / Published: 24 February 2022
(This article belongs to the Special Issue Characterization of Biopolymer–Concrete Composites in Construction)
The gradual development of government policies for ecological transition in the modern construction sector leads researchers to explore new alternative and low environmental impact materials with a particular focus on bio-sourced materials. In this perspective, the mechanical, thermal insulation, and the sound absorption performances of a spent coffee grounds/potato starch bio-based composite were analyzed for potential application in buildings. Based on thermal conductivity and diffusivity tests, the coffee grounds waste biocomposite was characterized as an insulating material comparable with conventional thermal insulation materials of plant origin. Acoustical tests revealed absorption coefficients in the same range as other conventional materials used in building acoustical comfort. This bio-sourced material presented a sufficient compressive mechanical behavior for non-load-bearing structures and a sufficient mechanical capacity to be shaped into building bricks. Mechanical, thermal, and acoustic performances depend on the moisture environment. The groundwork was laid for an initial reflection on how this composite would behave in two opposite climates: the continental climate of Reims in France and the tropical climate of Belém in Brazil. View Full-Text
Keywords: spent coffee grounds; potato starch; bio-based composite; acoustical properties; mechanical properties; hygrothermal properties spent coffee grounds; potato starch; bio-based composite; acoustical properties; mechanical properties; hygrothermal properties
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MDPI and ACS Style

Moussa, T.; Maalouf, C.; Bliard, C.; Abbes, B.; Badouard, C.; Lachi, M.; do Socorro Veloso Sodré, S.; Bufalino, L.; Bogard, F.; Beaumont, F.; Polidori, G. Spent Coffee Grounds as Building Material for Non-Load-Bearing Structures. Materials 2022, 15, 1689. https://doi.org/10.3390/ma15051689

AMA Style

Moussa T, Maalouf C, Bliard C, Abbes B, Badouard C, Lachi M, do Socorro Veloso Sodré S, Bufalino L, Bogard F, Beaumont F, Polidori G. Spent Coffee Grounds as Building Material for Non-Load-Bearing Structures. Materials. 2022; 15(5):1689. https://doi.org/10.3390/ma15051689

Chicago/Turabian Style

Moussa, Tala, Chadi Maalouf, Christophe Bliard, Boussad Abbes, Céline Badouard, Mohammed Lachi, Silvana do Socorro Veloso Sodré, Lina Bufalino, Fabien Bogard, Fabien Beaumont, and Guillaume Polidori. 2022. "Spent Coffee Grounds as Building Material for Non-Load-Bearing Structures" Materials 15, no. 5: 1689. https://doi.org/10.3390/ma15051689

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