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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/3231

Title: Thermal character of geopolymers synthesized from class f fly ash containing high concentrations of iron and α-quartz.
Authors: Rickard, WDA
van Riessen, A
Walls, P
Keywords: Fly Ash
Quartz
Iron Oxides
Thermal Expansion
Polymers
Morphology
Issue Date: Jan-2010
Publisher: Wiley-Blackwell
Citation: Rickard, W. D. A., van Riessen, A., & Walls, P. (2010). Thermal character of geopolymers synthesized from class f fly ash containing high concentrations of iron and α-quartz. International Journal of Applied Ceramic Technology, 7(1), 81-88.
Abstract: This article reports the thermal characteristics of geopolymers prepared with a class F fly ash containing 15 wt% iron oxide and 20 wt%α-quartz. The characterization techniques used included dilatometry, TGA, DTA, XRD, and SEM. Geopolymer specimens were prepared with nominal ratios of Si:Al=2.3 and Na:Al=0.85. Iron oxide in the fly ash precursor was found to play a critical role in the thermal expansion and morphology of geopolymers at temperatures >500°C. Volume changes of quartz on either side of the α–β phase transition cause only minor variations in thermal expansion. © 2010, Wiley-Blackwell. The definitive version is available at www3.interscience.wiley.com
URI: http://dx.doi.org/10.1111/j.1744-7402.2008.02328.x
http://apo.ansto.gov.au/dspace/handle/10238/3231
ISSN: 1546-542X
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