@JournalArticle {2101,
	title = {Mix design, properties and cost analysis of fly ash-based geopolymer foam},
	journal = {Construction and Building Materials},
	volume = {80},
	year = {2015},
	note = {
Abdollahnejad et al.
},
	month = {2015-04-01 00:00:00},
	pages = {18-30},
	publisher = {Elsevier},
	abstract = {
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\%.
},
	keywords = {Energy Efficiency, Foam geopolymers, Mix design; Cost analysis, Thermal insulators},
	issn = {0950-0618},
	doi = {10.1016/j.conbuildmat.2015.01.063},
	author = {Abdollahnejad, Z. and Pacheco-Torgal, F. and Felix, T. and Tahri, W. and Aguiar, J. B.}
}