Influence of CaO Content on the Fly Ash-Lime System Hydro-Thermal Synthesis Reaction Under Autoclave Curing
Based on the low temperature-synthesized fly ash cement,with the ordinary pressure curing replaced by autoclave curing,the effects of calcium oxide content on the fly ash-lime system hydro-thermal synthesis reaction is studied,especially the effect of CaO content to the cement pastes strength is inv...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Editorial Department of Journal of Nantong University (Natural Science Edition)
2020-09-01
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| Series: | Nantong Daxue xuebao. Ziran kexue ban |
| Subjects: | |
| Online Access: | https://ngzke.cbpt.cnki.net/portal/journal/portal/client/paper/d5412794e78e76eecf33667efeb643d6 |
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| Summary: | Based on the low temperature-synthesized fly ash cement,with the ordinary pressure curing replaced by autoclave curing,the effects of calcium oxide content on the fly ash-lime system hydro-thermal synthesis reaction is studied,especially the effect of CaO content to the cement pastes strength is investigated.The changes of phase composition,micro-structure and morphology are characterized by means of XRD and SEM analysis.The results show that with the increase of CaO content,the amount of β-C_2S and C12A_7in the gelling material also increase accordingly.While when the content of CaO is too high,the amount ofβ-C_2S and C12A_7in the gelling material fails to increase,and the strength will also be somewhat lost. |
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| ISSN: | 1673-2340 |