Activating process of geopolymer source material: kaolinite

Zhang, Zuhua and Yao, Xiao and Zhu, Huajun and Hua, Sudong and Chen, Yue (2009) Activating process of geopolymer source material: kaolinite. Journal Wuhan University of Technology, Materials Science Edition, 24 (1). pp. 132-136. ISSN 1000-2413

Abstract

The calcining process was recorded by differential scanning calorimetry and thermogravimetry (DSC-TG). The dehydroxylation (activating process) was partitioned into two steps by calculating and comparing the O—H bond lengths between inner hydroxyl group and surface hydroxyl group, as well as the ionic bond of Al—OH and position of —OH. X-ray diffraction (XRD) and compressive strength measurement show that the activity of calcined materials increases with the increasing of temperature in dehydroxylation region but decreases abruptly in the 'spine' region. The suggested temperature for activating kaolinite is 900 ℃.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2009 Wuhan University of Technology and Springer-Verlag GmbH. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 31 Jul 2014 05:05
Last Modified: 11 Nov 2014 00:35
Uncontrolled Keywords: geopolymer; kaolinite; activating; dehydroxylation; bond length
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
03 Chemical Sciences > 0305 Organic Chemistry > 030503 Organic Chemical Synthesis
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials
Identification Number or DOI: 10.1007/s11595-009-1132-6
URI: http://eprints.usq.edu.au/id/eprint/25667

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