@conference {2120,
	title = {PERFORMANCE OF FLY ASH-BASED GEOPOLYMER MORTAR},
	journal = {European Mortar Summit 2015},
	year = {2015},
	month = {2015-05-21 00:00:00},
	pages = {40-52},
	address = {Lisboa},
	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. The use of an activator/binder ratio of 0.8 a sodium
silicate/sodium hydroxide of 2.5 led to the lowest thermal conductivity. Mixtures with a low
thermal conductivity of around 0.1 W/(m.{\textordmasculine}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 (less than 10\%) being that the alkaline activators
are responsible for more than 80\%.
},
	keywords = {cost analysis, Energy Efficiency, Foam geopolymers, Mix design, Thermal insulators},
	author = {Abdollahnejad, Z. and Felix, T. and Pacheco-Torgal, F. and Aguiar, J. B.}
}