Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/33357
Título: | Mix design, properties and cost analysis of fly ash-based geopolymer foam |
Autor(es): | Abdollahnejad, Zahra Pacheco-Torgal, F. Félix, T. Tahri, W. Aguiar, J. L. Barroso de |
Palavras-chave: | Energy efficiency Thermal insulators Foam geopolymers Mix design Cost analysis |
Data: | 29-Jan-2015 |
Editora: | Elsevier |
Revista: | Construction and Building Materials |
Citação: | Abdollahnejad Z., Torgal F. P., Felix T., Tahri W., Aguiar A. Mix design, properties and cost analysis of fly ash-based geopolymer foam, Construction and Building Materials, Vol. 80, pp. 18-30, doi:10.1016/j.conbuildmat.2015.01.063, 2015 |
Resumo(s): | This study has investigated the joint effect of several mix parameters on the properties of foam geopolymers. The mix parameters analysed through a laboratory experiment of 54 different mortar mixes were, sodium silicate/sodium hydroxide mass ratio (2.5, 3.5, 4.5), activator/binder mass ratio (0.6, 0.8, 1.0), chemical foaming agent type (hydrogen peroxide (H2O2) and sodium perborate (NaBO3)) and foaming agent mass ratio content (1%, 2%, 3%). Properties, SEM and FTIR analysis and cost analysis are included. The results show that the sodium perborate over performs hydrogen peroxide leading to a lower overall thermal conductibility of foam geopolymers. Mixtures with a low thermal conductivity of around 0.1 W/ (m K) and a compressive strength of around 6 MPa were achieved. The cost analysis show that the foaming agents are responsible for a small percentage of foam geopolymers total cost being that the alkaline activators are responsible for more than 80%. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/33357 |
DOI: | 10.1016/j.conbuildmat.2015.01.063 |
ISSN: | 0950-0618 |
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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Fly ash geopolymer foam.pdf | Principal | 3,85 MB | Adobe PDF | Ver/Abrir |