Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio
Alkali activation of fly ash can be considered as one of the more promising alternative systems to traditional hydraulic binders, particularly if the process can be carried out at room temperature. With the aim of finding the best solution chemistry for room temperature activation, two types of fly...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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ELSEVIER
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/40039 |
| _version_ | 1848755757782138880 |
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| author | Bignozzi, M. Manzi, S. Natali, M. Rickard, William Van Riessen, Arie |
| author_facet | Bignozzi, M. Manzi, S. Natali, M. Rickard, William Van Riessen, Arie |
| author_sort | Bignozzi, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Alkali activation of fly ash can be considered as one of the more promising alternative systems to traditional hydraulic binders, particularly if the process can be carried out at room temperature. With the aim of finding the best solution chemistry for room temperature activation, two types of fly ash have been activated using Na2O/SiO2 molar ratio ranging from 0.12 to 0.20. It was found that the behaviour of the resultant geopolymer and mortars in the fresh and hardened state is more influenced by the type of fly ash, in particular by their fineness and mineralogical composition, than by the increasing proportion of sodium silicate solution in the mix. |
| first_indexed | 2025-11-14T09:01:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-40039 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:01:23Z |
| publishDate | 2014 |
| publisher | ELSEVIER |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-400392017-09-13T15:07:51Z Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio Bignozzi, M. Manzi, S. Natali, M. Rickard, William Van Riessen, Arie Porosity Fly ash Geopolymer Microstructure Alkali activation of fly ash can be considered as one of the more promising alternative systems to traditional hydraulic binders, particularly if the process can be carried out at room temperature. With the aim of finding the best solution chemistry for room temperature activation, two types of fly ash have been activated using Na2O/SiO2 molar ratio ranging from 0.12 to 0.20. It was found that the behaviour of the resultant geopolymer and mortars in the fresh and hardened state is more influenced by the type of fly ash, in particular by their fineness and mineralogical composition, than by the increasing proportion of sodium silicate solution in the mix. 2014 Journal Article http://hdl.handle.net/20.500.11937/40039 10.1016/j.conbuildmat.2014.07.062 ELSEVIER restricted |
| spellingShingle | Porosity Fly ash Geopolymer Microstructure Bignozzi, M. Manzi, S. Natali, M. Rickard, William Van Riessen, Arie Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio |
| title | Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio |
| title_full | Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio |
| title_fullStr | Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio |
| title_full_unstemmed | Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio |
| title_short | Room temperature alkali activation of fly ash: The effect of Na2O/SiO2 ratio |
| title_sort | room temperature alkali activation of fly ash: the effect of na2o/sio2 ratio |
| topic | Porosity Fly ash Geopolymer Microstructure |
| url | http://hdl.handle.net/20.500.11937/40039 |