Thermal analysis and microstructure of Portland cement-fly ash-silica fume pastes
Thermal analysis (thermogravimetry and differential thermal analysis) was used with scanning electron microscopy technique to investigate the hydration mechanisms and the microstructure of Portland cement-Fly ashsilica fume mixes. Calcium silicate hydrate (C-S-H), ettringite, gehlenite hydrate (C 2A...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-77951878103&partnerID=40&md5=2f1700d9c423d4571642d9eedfdf6903 http://cmuir.cmu.ac.th/handle/6653943832/6350 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | Thermal analysis (thermogravimetry and differential thermal analysis) was used with scanning electron microscopy technique to investigate the hydration mechanisms and the microstructure of Portland cement-Fly ashsilica fume mixes. Calcium silicate hydrate (C-S-H), ettringite, gehlenite hydrate (C 2ASH8), calcium hydroxide (Ca(OH)2) and calcium carbonate (CaCO3) phases were detected in all mixes. In the mixes with the use of silica fume addition, there is a decrease in Ca(OH)2 with increasing silica fume content at 5 and 10% compared to that of the reference Portland-fly ash cement paste and a corresponding increase in calcium silicate hydrate (C-S-H). |
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