Development of High Thermal Stability Geopolymer Composites Enhanced by Nano Metakaolin

  • A. M El Nagar Housing and Building National Research Centre (HBRC), 87 El-Tahrir St, Dokki, Giza, P.O. Box 1770 Cairo, Egypt
  • H. M. Khater Housing and Building National Research Centre (HBRC), 87 El-Tahrir St, Dokki, Giza, P.O. Box 1770 Cairo, Egypt
DOI: https://doi.org/10.34118/jbms.v6i1.64
Keywords: firing shrinkage, geopolymer composites, slag, kaolin, nano metakaolin

Abstract

This paper deals with study of thermal stability of geopolymer composites enhanced by nano metakaolin materials (NMK) and exposed to high firing temperature up to 1000 °C. The main geopolymer made up of water cooled slag having various kaolin ratios.  The activators used are Na2SiO3 and NaOH in the ratio of 3:3. The thermo-physical, micro-structural and mechanical properties of the geopolymers before and after the exposure to elevated temperatures of 300, 500, 600 800 and 1000 °C have been investigated. The fire shrinkage of the geopolymer specimens increased by increasing temperature up to 1000 oC. Also, the fire shrinkage increased slowly up to 500 °C. The mechanical strength of geopolymer specimens increased with temperature up to 500 oC. The good thermo-physical and mechanical properties for these geopolymer composites increase the possibility of vast application of these eco-friendly materials in construction sectors.

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Published
2019-03-31
How to Cite
El Nagar, A. M., & Khater , H. M. (2019). Development of High Thermal Stability Geopolymer Composites Enhanced by Nano Metakaolin. Journal of Building Materials and Structures, 6(1), 10-19. https://doi.org/10.34118/jbms.v6i1.64
Issue
Vol 6 No 1 (2019)
Section
Original Articles

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