Study on the activation of calcined kaolin
Article
Article Title | Study on the activation of calcined kaolin |
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Article Category | Article |
Authors | Zhu, Huajun (Author), Yao, Xiao (Author), Zhang, Zuhua (Author), Hua, Sudong (Author) and Chen, Yue (Author) |
Journal Title | Cailiao Kexue yu Gongyi (Material Science and Technology) |
Journal Citation | 16 (S1), pp. 126-129 |
Number of Pages | 4 |
Year | 2008 |
Place of Publication | Harbin, China |
Abstract | Calcined temperature is a key factor to the activity of metakaolin. Structure characteristics and alkali activation of kaolin and its calcined products at different temperatures were analyzed by X-ray diffraction (XRD), nuclear magnetic resonance (NMR), infrared spectrometry (IR) and isothermal calorimetry. The results show that the activity of kaolin calcined at 900°C is best. The characteristic absorption peak of kaolin disappears, a large amount of Al atoms convert from 6-coordination to 5-coordination; some characteristic vibration peaks of kaolin disappear while characteristic absorption peaks of metakaolin appear; There is much heat evolution after mixing it with alkali and the compressive strength is the highest. The strength of samples cured at 80°C for 3 days and 7 days reaches 33.8 and 35.3 MPa respectively. |
Keywords | calcined temperature; geopolymer; kaolin; metakaolin |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
Public Notes | Copyright 2008 Elsevier B.V. |
Byline Affiliations | Nanjing University of Technology, China |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2879/study-on-the-activation-of-calcined-kaolin
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