The ageing process of alkali activated metakaolin

C. H. Rüscher; E. Mielcarek; W. Lutz; A. Ritzmann; W. M. Kriven

doi:10.1002/9780470909836.ch30

The ageing process of alkali activated metakaolin

C. H. Rüscher, E. Mielcarek, W. Lutz, A. Ritzmann, W. M. Kriven

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The ageing of metakaolin-based geopolymer of special composition (1.2K ₂O·Al₂O₃·4.2SiO ₂· 14H₂O) has been studied by flexural force measurements, a molybdate analytical method and Fourier transform infrared spectroscopy (FTIR). The results enable new insight into details of the structural development responsible for early strength development between 25 h and 100 h and the unfavorable weakening for ageing above 200 h. In particular the increase in strength is related to the slow development of an aluminosilicate network enclosing preformed polysilicate chains. A fast condensation of silicate chains occurs during the dissolution of metakaolin in the first 25 h of the ageing process. The subsequent destruction of polymeric silicate chains finally causes the weakening.

Original language	English (US)
Title of host publication	Design, Development, and Applications of Engineering Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8
Publisher	American Ceramic Society
Pages	315-324
Number of pages	10
ISBN (Print)	9780470889367
DOIs	https://doi.org/10.1002/9780470909836.ch30
State	Published - 2010
Event	8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8 - Vancouver, BC, Canada Duration: May 31 2009 → Jun 5 2009

Publication series

Name	Ceramic Transactions
Volume	215
ISSN (Print)	1042-1122

Other

Other	8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8
Country/Territory	Canada
City	Vancouver, BC
Period	5/31/09 → 6/5/09

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Online availability

10.1002/9780470909836.ch30

Library availability

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Rüscher, C. H., Mielcarek, E., Lutz, W., Ritzmann, A., & Kriven, W. M. (2010). The ageing process of alkali activated metakaolin. In Design, Development, and Applications of Engineering Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8 (pp. 315-324). (Ceramic Transactions; Vol. 215). American Ceramic Society. https://doi.org/10.1002/9780470909836.ch30

The ageing process of alkali activated metakaolin. / Rüscher, C. H.; Mielcarek, E.; Lutz, W. et al.

Design, Development, and Applications of Engineering Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8. American Ceramic Society, 2010. p. 315-324 (Ceramic Transactions; Vol. 215).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Rüscher, CH, Mielcarek, E, Lutz, W, Ritzmann, A & Kriven, WM 2010, The ageing process of alkali activated metakaolin. in Design, Development, and Applications of Engineering Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8. Ceramic Transactions, vol. 215, American Ceramic Society, pp. 315-324, 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8, Vancouver, BC, Canada, 5/31/09. https://doi.org/10.1002/9780470909836.ch30

Rüscher CH, Mielcarek E, Lutz W, Ritzmann A, Kriven WM. The ageing process of alkali activated metakaolin. In Design, Development, and Applications of Engineering Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8. American Ceramic Society. 2010. p. 315-324. (Ceramic Transactions). doi: 10.1002/9780470909836.ch30

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abstract = "The ageing of metakaolin-based geopolymer of special composition (1.2K 2O·Al2O3·4.2SiO 2· 14H2O) has been studied by flexural force measurements, a molybdate analytical method and Fourier transform infrared spectroscopy (FTIR). The results enable new insight into details of the structural development responsible for early strength development between 25 h and 100 h and the unfavorable weakening for ageing above 200 h. In particular the increase in strength is related to the slow development of an aluminosilicate network enclosing preformed polysilicate chains. A fast condensation of silicate chains occurs during the dissolution of metakaolin in the first 25 h of the ageing process. The subsequent destruction of polymeric silicate chains finally causes the weakening.",

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AB - The ageing of metakaolin-based geopolymer of special composition (1.2K 2O·Al2O3·4.2SiO 2· 14H2O) has been studied by flexural force measurements, a molybdate analytical method and Fourier transform infrared spectroscopy (FTIR). The results enable new insight into details of the structural development responsible for early strength development between 25 h and 100 h and the unfavorable weakening for ageing above 200 h. In particular the increase in strength is related to the slow development of an aluminosilicate network enclosing preformed polysilicate chains. A fast condensation of silicate chains occurs during the dissolution of metakaolin in the first 25 h of the ageing process. The subsequent destruction of polymeric silicate chains finally causes the weakening.

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The ageing process of alkali activated metakaolin

Abstract

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