In situ elevated temperature testing of fly ash based geopolymer composites
In situ elevated temperature investigations using fly ash based geopolymers filled with alumina aggregate were undertaken. Compressive strength and short term creep tests were carried out to determine the onset temperature of viscous flow. Fire testing using the standard cellulose curve was performe...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
mdpi
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/36995 |
| _version_ | 1848754925654245376 |
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| author | Vickers, L. Pan, Z. Tao, Z. Van Riessen, Arie |
| author_facet | Vickers, L. Pan, Z. Tao, Z. Van Riessen, Arie |
| author_sort | Vickers, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In situ elevated temperature investigations using fly ash based geopolymers filled with alumina aggregate were undertaken. Compressive strength and short term creep tests were carried out to determine the onset temperature of viscous flow. Fire testing using the standard cellulose curve was performed. Applying a load to the specimen as the temperature increased reduced the temperature at which viscous flow occurred (compared to test methods with no applied stress). Compressive strength increased at the elevated temperature and is attributed to viscous flow and sintering forming a more compact microstructure. The addition of alumina aggregate and reduction of water content reduced the thermal conductivity. This led to the earlier onset and shorter dehydration plateau duration times. However, crack formation was reduced and is attributed to smaller thermal gradients across the fire test specimen. |
| first_indexed | 2025-11-14T08:48:09Z |
| format | Journal Article |
| id | curtin-20.500.11937-36995 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:48:09Z |
| publishDate | 2016 |
| publisher | mdpi |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-369952017-09-13T15:17:39Z In situ elevated temperature testing of fly ash based geopolymer composites Vickers, L. Pan, Z. Tao, Z. Van Riessen, Arie In situ elevated temperature investigations using fly ash based geopolymers filled with alumina aggregate were undertaken. Compressive strength and short term creep tests were carried out to determine the onset temperature of viscous flow. Fire testing using the standard cellulose curve was performed. Applying a load to the specimen as the temperature increased reduced the temperature at which viscous flow occurred (compared to test methods with no applied stress). Compressive strength increased at the elevated temperature and is attributed to viscous flow and sintering forming a more compact microstructure. The addition of alumina aggregate and reduction of water content reduced the thermal conductivity. This led to the earlier onset and shorter dehydration plateau duration times. However, crack formation was reduced and is attributed to smaller thermal gradients across the fire test specimen. 2016 Journal Article http://hdl.handle.net/20.500.11937/36995 10.3390/ma9060445 mdpi fulltext |
| spellingShingle | Vickers, L. Pan, Z. Tao, Z. Van Riessen, Arie In situ elevated temperature testing of fly ash based geopolymer composites |
| title | In situ elevated temperature testing of fly ash based geopolymer composites |
| title_full | In situ elevated temperature testing of fly ash based geopolymer composites |
| title_fullStr | In situ elevated temperature testing of fly ash based geopolymer composites |
| title_full_unstemmed | In situ elevated temperature testing of fly ash based geopolymer composites |
| title_short | In situ elevated temperature testing of fly ash based geopolymer composites |
| title_sort | in situ elevated temperature testing of fly ash based geopolymer composites |
| url | http://hdl.handle.net/20.500.11937/36995 |