Effects of NaOH solution concentration and reaction time on metakaolin geopolymerization

Yang, Tao and Yao, Xiao and Zhang, Zuhua and Zhu, Huajun (2013) Effects of NaOH solution concentration and reaction time on metakaolin geopolymerization. Journal of Nanjing University of Technology, 35 (4). pp. 21-25. ISSN 1671-7627

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Abstract

The products of metakaolin(MK)activated by NaOH solutions with different concentration and reaction time were analyzed by means of isothermal conductive calorimetry (ICC),X-ray diffraction(XRD)and Fourier transform infrared(FT-IR). The results showed that when metakaolin was activated by 10 and 12mol/L NaOH solutions at 40℃, the resulted products were Na-A zeolite and geopolymer, respectively. In the early reaction stage, the processes of dissolution, polymerization and reorganization decided the structure order of products and properties. To make sure that the amorphous geopolymeric gels would be formed in the alkali activation system, reaction conditions and activator concentration should be controlled to avoid the formation of zeolite.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: No
Item Status: Live Archive
Additional Information: This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 30 Jul 2014 23:42
Last Modified: 06 Mar 2017 05:34
Uncontrolled Keywords: NaOH; metakaolin; geopolymer; zeolite
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
01 Mathematical Sciences > 0101 Pure Mathematics > 010106 Lie Groups, Harmonic and Fourier Analysis
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870303 Polymeric Materials (e.g. Paints)
Identification Number or DOI: 10.3969/j.issn.1671-7627.2013.04.005
URI: http://eprints.usq.edu.au/id/eprint/25660

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