resumo
In this investigation cork was used as a low density aggregate in the production of ultra-lightweight and low thermal conductivity inorganic polymer (geopolymer) composites. This novel and highly sustainable material, synthesised at room temperature (23 degrees C), may decrease the energy losses inside buildings, thus contributing to the United Nations development goals regarding energy and climate change. The ultra-low density (260 kg/m(3)) and low thermal conductivity (72 mW/m K) shown by the cork-composites are the second lowest ever reported for inorganic polymer composites, only being surpassed by that of polystyrene-inorganic polymer composites. However, cork is a fully renewable and sustainable resource, while polystyrene is manufactured from non-renewable fossil fuels, and for that reason our strategy has an additional sustainability advantage. Moreover, the cork-inorganic polymer composites do not release any toxic fume when under fire conditions, which is a major advantage over polymeric-based foams.
palavras-chave
BIOMASS FLY-ASH; CARBON FOOTPRINT; FOAM CONCRETE; GEOPOLYMER; WASTE; BEHAVIOR; MORTARS; PERFORMANCE; RESISTANCE; STRENGTH
categoria
Construction & Building Technology; Materials Science
autores
Novais, RM; Senff, L; Carvalheiras, J; Seabra, MP; Pullar, RC; Labrincha, JA
nossos autores
João António de Sousa Carvalheiras
Estudante de doutoramento
João António Labrincha Baptista
Professor Catedrático
Luciano Senff
Bolseiro de pós-Doutoramento
Maria Paula Seabra
Professor Auxiliar
Rob Pullar
Colaborador
Rui Miguel Novais
Professor Auxiliaragradecimentos
R. M. Novais wishes to thank FCT project H2CORK (PTDC/CTM-ENE/6762/2014), and R. C. Pullar wishes to thank FCT (Portuguese Fundation for Science and Technology) grant IF/00681/2015, for supporting this work. This work was developed in the scope of the project CICECO -Aveiro Institute of Materials UID/CTM/50011/2013 (Compete Reference: POCI-01-0145-FEDER-007679), Associated Laboratory of University of Aveiro, financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement.