Study on the activation of calcined kaolin

Zhu, Huajun and Yao, Xiao and Zhang, Zuhua and Hua, Sudong and Chen, Yue (2008) Study on the activation of calcined kaolin. Cailiao Kexue yu Gongyi (Material Science and Technology), 16 (S1). pp. 126-129. ISSN 1005-0299

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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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright 2008 Elsevier B.V.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 11 Nov 2014 00:55
Last Modified: 11 Nov 2014 04:59
Uncontrolled Keywords: calcined temperature; geopolymer; kaolin; metakaolin
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8610 Ceramics, Glass and Industrial Mineral Products > 861003 Clay Products
URI: http://eprints.usq.edu.au/id/eprint/25671

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