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https://hdl.handle.net/1822/38803
Título: | Development of foam one-part geopolymers with enhanced thermal insulation performance and low carbon dioxide emissions |
Autor(es): | Abdollahnejad, Zahra Pacheco-Torgal, F. Aguiar, J. L. Barroso de |
Palavras-chave: | Carbon dioxide emissions Compressive strength cost efficiency Foam agents Geopolymers Thermal conductivity |
Data: | Nov-2015 |
Editora: | Trans Tech Publications |
Revista: | Advanced Materials Research |
Citação: | Abdollahnejad Z., Torgal F. P., Aguiar J. Development of Foam One-Part Geopolymers with Enhanced Thermal Insulation Performance and Low Carbon Dioxide Emissions, Advanced Materials Research, Vol. 1129, pp. 565-572, doi:10.4028/www.scientific.net/AMR.1129.565, 2015 |
Resumo(s): | Buildings are responsible for more than 40% of the energy consumption and greenhouse gas emissions. Thus, increasing building energy efficiency is one the most cost-effective ways to reduce emissions. The use of thermal insulation materials could constitute the most effective way of reducing heat losses in buildings by minimising heat energy needs. These materials have a thermal conductivity factor, k (W/m.K) lower than 0.065 while other insulation materials such as aerated concrete can go up to 0.11. Current insulation materials are associated with negative impacts in terms of toxicity. Polystyrene, for example contains anti-oxidant additives and ignition retardants. In addition, its production involves the generation of benzene and chlorofluorocarbons. Polyurethane is obtained from isocyanates, which are widely known for their tragic association with the Bhopal disaster. Besides current insulation materials releases toxic fumes when subjected to fire. This paper presents experimental results on one-part geopolymers. It also includes global warming potential assessment and cost analysis. The results show that only the use of aluminium powder allows the production mixtures with a high compressive strength however its high cost means they are commercially useless when facing the competition of commercial cellular concrete. The results also show that one-part geopolymer mixtures based on 26%OPC +58.3%FA +8%CS +7.7%CH and 3.5% hydrogen peroxide constitute a promising cost efficient (67 euro/m3), thermal insulation solution for floor heating systems with low global warming potential of 443 KgCO2eq/m3. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/38803 |
DOI: | 10.4028/www.scientific.net/AMR.1129.565 |
ISSN: | 1662-8985 |
Versão da editora: | http://www.scientific.net/AMR.1129.565 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | C-TAC - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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2111-AMR.1129.565.pdf | 2,23 MB | Adobe PDF | Ver/Abrir |