Mica platelet-reinforced geopolymer composites

P. F. Keane, G. P. Kutyla, J. F. Wight, W. Rickard, W. M. Kriven

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Composites of phlogopite mica platelets of composition KMg3AlSi3O10(F,OH)2 dispersed in potassium-based potassium geopolymer were fabricated. The platelet additions of up to 25 wt% were achieved which increased the flexure strength and thermal conductivity of pure potassium-based geopolymer. A maximum 3-point flexure strength at room temperature was measured as 11.4 MPa with a standard deviation of 0.34 MPa for 25 wt% mica additions. Heat treatments caused chemical decomposition and water loss at temperatures up to 700 °C and eventual formation of glassy and crystalline leucite at 1000°C. A maximum post-treatment strength of 10.7 MPa with a standard deviation of 0.52 MPa was obtained for the 1000°C heat-treated samples. The thermal conductivity increased from 0.24 ± 0.000 W/mK for pure K-based geopolymer to 0.30 ± 0.008 W/mK, as a function of mica platelet additions up to 10 wt %.

Original languageEnglish (US)
Title of host publicationDevelopments in Strategic Ceramic Materials II - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
EditorsWaltraud M. Kriven, Yanchun Zhou, Jingyang Wang, Dongming Zhu, Gustavo Costa
PublisherAmerican Ceramic Society
Pages13-20
Number of pages8
Edition7
ISBN (Print)9781119040439
DOIs
StatePublished - 2017
EventDevelopments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 - Daytona Beach, United States
Duration: Jan 24 2016Jan 29 2016

Publication series

NameCeramic Engineering and Science Proceedings
Number7
Volume37
ISSN (Print)0196-6219

Other

OtherDevelopments in Strategic Ceramic Materials II - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
CountryUnited States
CityDaytona Beach
Period1/24/161/29/16

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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  • Cite this

    Keane, P. F., Kutyla, G. P., Wight, J. F., Rickard, W., & Kriven, W. M. (2017). Mica platelet-reinforced geopolymer composites. In W. M. Kriven, Y. Zhou, J. Wang, D. Zhu, & G. Costa (Eds.), Developments in Strategic Ceramic Materials II - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 (7 ed., pp. 13-20). (Ceramic Engineering and Science Proceedings; Vol. 37, No. 7). American Ceramic Society. https://doi.org/10.1002/9781119321811.ch2