The Composition of Fly Ash Glass Phase and Its Dissolution Properties Applying to Geopolymeric Materials

Journal of the American Ceramic SocietyVolume 94, Issue 6 p. 1773-1778 The Composition of Fly Ash Glass Phase and Its Dissolution Properties Applying to Geopolymeric Materials Chao Li, Corresponding Author Chao Li State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China†Author to whom correspondence should be addressed. e-mail: [email protected]Search for more papers by this authorYu Li, Yu Li Key Laboratory of Ecological and Recycle Metallurgy of Chinese Ministry of Education, University of Science and Technology Beijing, Beijing 100083; ChinaSearch for more papers by this authorHenghu Sun, Henghu Sun State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China School of Engineering and Computer Science, University of the Pacific, Stockton, California 95211Search for more papers by this authorLongtu Li, Longtu Li State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, ChinaSearch for more papers by this author Chao Li, Corresponding Author Chao Li State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China†Author to whom correspondence should be addressed. e-mail: [email protected]Search for more papers by this authorYu Li, Yu Li Key Laboratory of Ecological and Recycle Metallurgy of Chinese Ministry of Education, University of Science and Technology Beijing, Beijing 100083; ChinaSearch for more papers by this authorHenghu Sun, Henghu Sun State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China School of Engineering and Computer Science, University of the Pacific, Stockton, California 95211Search for more papers by this authorLongtu Li, Longtu Li State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, ChinaSearch for more papers by this author First published: 16 February 2011 https://doi.org/10.1111/j.1551-2916.2010.04337.xCitations: 47 C. Jantzen—contributing editor Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Using X-ray diffraction combined with Rietveld method and chemical analysis with hydrofluoric acid (HF) solution, the content and composition of glass phase of a class F fly ash are quantified, and the initial Si/Al ratio of glass phase is calculated as well. The dissolution of Si4+ and Al3+ in different chemical solution (HF, NaOH, and NaF) in various concentrations and with different reaction time of NaOH solution was studied. The dissolved Si/Al ratio was compared with the initial value, and following conclusions are drawn: (1) only a very small part of Si and Al dissolved in NaOH solution, knowing as available Si and Al; (2) the dissolution is influenced by alkali concentration. When the concentration of NaOH was 10M, the dissolved Si/Al ratio at 5, 15, and 30 min was lower than initial value, but increased greatly at 240 min, which means Al is more prone to dissolve than Si, due to the weaker Al–O bonds than Si–O bonds. However, when the alkali concentration was 15M, the dissolved Si/Al ratio increased, and the dissolution of Si and Al both get accelerated. References 1 J. C. Hower, R. F. Rathbone, J. D. Robertson, G. Peterson, and A. S. 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Citing Literature Volume94, Issue6June 2011Pages 1773-1778 ReferencesRelatedInformation