Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment
© 2017 Elsevier Ltd An experimental study was conducted on modified cement paste cubes in ammonium nitrate solution. The modified cement paste was made using micro-fine palm oil fuel ash (POFA) as partial cement replacement. Compressive strength, Energy Dispersive X-ray (EDX) and a Scanning Electron...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Elsevier BV
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/62435 |
| _version_ | 1848760850724159488 |
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| author | Tasnim, S. Rahman, Muhammad Ahmadi, R. |
| author_facet | Tasnim, S. Rahman, Muhammad Ahmadi, R. |
| author_sort | Tasnim, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 Elsevier Ltd An experimental study was conducted on modified cement paste cubes in ammonium nitrate solution. The modified cement paste was made using micro-fine palm oil fuel ash (POFA) as partial cement replacement. Compressive strength, Energy Dispersive X-ray (EDX) and a Scanning Electron Microscopy (SEM) test were carried out. The 50 mm cubes were cast containing 0%, 10%, 20% and 30% of POFA as cement replacement using constant water to cement ratio of 0.4. After 28 days of water curing, 50% of samples were immersed in 20% ammonium nitrate solution and the rest of samples were kept in room temperature. It was observed that, samples replaced with 20% POFA had the highest compressive strength in ammonium nitrate solution. In addition to that, it was also observed through EDX and SEM analysis that cement replaced with 20% POFA had lower Ca/Si ratio and there were more C-S-H structures in the modified cement paste in ammonium nitrate solution. Lower Ca/Si ratio and more C-S-H structures is an indication of higher pozzolanic reactions in the paste. |
| first_indexed | 2025-11-14T10:22:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-62435 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:22:20Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-624352018-02-01T05:58:14Z Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment Tasnim, S. Rahman, Muhammad Ahmadi, R. © 2017 Elsevier Ltd An experimental study was conducted on modified cement paste cubes in ammonium nitrate solution. The modified cement paste was made using micro-fine palm oil fuel ash (POFA) as partial cement replacement. Compressive strength, Energy Dispersive X-ray (EDX) and a Scanning Electron Microscopy (SEM) test were carried out. The 50 mm cubes were cast containing 0%, 10%, 20% and 30% of POFA as cement replacement using constant water to cement ratio of 0.4. After 28 days of water curing, 50% of samples were immersed in 20% ammonium nitrate solution and the rest of samples were kept in room temperature. It was observed that, samples replaced with 20% POFA had the highest compressive strength in ammonium nitrate solution. In addition to that, it was also observed through EDX and SEM analysis that cement replaced with 20% POFA had lower Ca/Si ratio and there were more C-S-H structures in the modified cement paste in ammonium nitrate solution. Lower Ca/Si ratio and more C-S-H structures is an indication of higher pozzolanic reactions in the paste. 2018 Journal Article http://hdl.handle.net/20.500.11937/62435 10.1016/j.conbuildmat.2017.12.060 Elsevier BV restricted |
| spellingShingle | Tasnim, S. Rahman, Muhammad Ahmadi, R. Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment |
| title | Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment |
| title_full | Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment |
| title_fullStr | Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment |
| title_full_unstemmed | Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment |
| title_short | Mechanical performance of modified cement paste made with micro-fine POFA in ammonium nitrate environment |
| title_sort | mechanical performance of modified cement paste made with micro-fine pofa in ammonium nitrate environment |
| url | http://hdl.handle.net/20.500.11937/62435 |