期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 80, 期 -, 页码 18-30出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2015.01.063
关键词
Energy efficiency; Thermal insulators; Foam geopolymers; Mix design; Cost analysis
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%. (C) 2015 Elsevier Ltd. All rights reserved.
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