Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD
Geopolymers are a class of versatile materials that have the potential for utilisation as a cement replacement, fireproof barriers, materials for high temperatures, and biological implant applications. This study investigated methods for determining the formulation for manufacturing geopolymers made...
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| Format: | Journal Article |
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Elsevier Science Ltd
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/32011 |
| _version_ | 1848753543242055680 |
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| author | Williams, Ross Van Riessen, Arie |
| author_facet | Williams, Ross Van Riessen, Arie |
| author_sort | Williams, Ross |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Geopolymers are a class of versatile materials that have the potential for utilisation as a cement replacement, fireproof barriers, materials for high temperatures, and biological implant applications. This study investigated methods for determining the formulation for manufacturing geopolymers made with fly ash from coal-fired power stations. The accepted method of determining the formulation of geopolymers to get the desired matrix chemistry uses the bulk composition of the feedstock materials. This formulation method is widely used in investigations using feedstock materials that almost completely react during processing. It is widely considered that amorphous components of fly ash are the reactive components in the geopolymerisation reaction. However, quantification of the amorphous components is challenging and generally avoided with the concomitant problem that the formulation is far from optimum.For the work presented here, the composition of the amorphous part is determined accurately and this information utilised to synthesise geopolymers. The bulk composition is first determined using X-ray fluorescence spectroscopy (XRF) and then the amorphous composition determined using XRF and quantitative X-ray diffraction (QXRD). Formulating the mixture based on amorphous composition produced samples with a significantly higher compressive strength than those formulated using the bulk composition. Using the amorphous composition of fly ash produced geopolymers with similar physical properties to that of metakaolin geopolymers with the same targeted composition. We demonstrated a new quantitative formulation method that is superior to the accepted method. |
| first_indexed | 2025-11-14T08:26:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-32011 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:26:11Z |
| publishDate | 2010 |
| publisher | Elsevier Science Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-320112017-09-13T15:51:05Z Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD Williams, Ross Van Riessen, Arie Quantitative X-ray diffraction X-ray fluorescence Fly ash Amorphous composition Geopolymers Geopolymers are a class of versatile materials that have the potential for utilisation as a cement replacement, fireproof barriers, materials for high temperatures, and biological implant applications. This study investigated methods for determining the formulation for manufacturing geopolymers made with fly ash from coal-fired power stations. The accepted method of determining the formulation of geopolymers to get the desired matrix chemistry uses the bulk composition of the feedstock materials. This formulation method is widely used in investigations using feedstock materials that almost completely react during processing. It is widely considered that amorphous components of fly ash are the reactive components in the geopolymerisation reaction. However, quantification of the amorphous components is challenging and generally avoided with the concomitant problem that the formulation is far from optimum.For the work presented here, the composition of the amorphous part is determined accurately and this information utilised to synthesise geopolymers. The bulk composition is first determined using X-ray fluorescence spectroscopy (XRF) and then the amorphous composition determined using XRF and quantitative X-ray diffraction (QXRD). Formulating the mixture based on amorphous composition produced samples with a significantly higher compressive strength than those formulated using the bulk composition. Using the amorphous composition of fly ash produced geopolymers with similar physical properties to that of metakaolin geopolymers with the same targeted composition. We demonstrated a new quantitative formulation method that is superior to the accepted method. 2010 Journal Article http://hdl.handle.net/20.500.11937/32011 10.1016/j.fuel.2010.07.031 Elsevier Science Ltd restricted |
| spellingShingle | Quantitative X-ray diffraction X-ray fluorescence Fly ash Amorphous composition Geopolymers Williams, Ross Van Riessen, Arie Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD |
| title | Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD |
| title_full | Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD |
| title_fullStr | Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD |
| title_full_unstemmed | Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD |
| title_short | Determination of the reactive component if fly ashes for geopolymer production using XRF and XRD |
| title_sort | determination of the reactive component if fly ashes for geopolymer production using xrf and xrd |
| topic | Quantitative X-ray diffraction X-ray fluorescence Fly ash Amorphous composition Geopolymers |
| url | http://hdl.handle.net/20.500.11937/32011 |