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Title: Multifunctional cork - alkali-activated fly ash composites: A sustainable material to enhance buildings' energy and acoustic performance
Author: Novais, Rui M.
Carvalheiras, Joao
Senff, Luciano
Lacasta Palacio, Ana María
Cantalapiedra, Inma R.
Giró Paloma, Jessica
Seabra, Maria P.
Labrincha, Joao A.
Keywords: Suro
Materials compostos
Materials de construcció
Aïllament tèrmic
Composite materials
Building materials
Insulation (Heat)
Issue Date: 26-Dec-2019
Publisher: Elsevier
Abstract: This work evaluates, for the first time, the possibility of producing multifunctional alkali-activated composites combining ultra-low density, low thermal conductivity, high acoustic absorption, and good moisture buffering capacity. The composites were prepared using cork as a lightweight aggregate. This novel material might promote energy savings and tackle the CO2 emissions of the building sector, while simultaneously improve the comfort for inhabitants (e.g. humidity levels regulation and sound pollution reduction). The composites apparent density (as low as 168 kg/m3 ) and thermal conductivity (as low as 68 mW/m K) are amongst the lowest ever reported for alkali-activated materials (AAM) composites and foams, while their sound absorption ability is comparable to the best performing AAM foams reported to date, but in addition these eco-friendly composites also show good ability to passively adjust the humidity levels inside buildings. The multifunctional properties shown by the cork - AAM composites set them apart from other conventional building materials and might contribute to the global sustainability of the construction sector.
Note: Versió postprint del document publicat a:
It is part of: Energy and Buildings, 2019, vol. 210, num. 109739
Related resource:
ISSN: 0378-7788
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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