Development of High Thermal Stability Geopolymer Composites Enhanced by Nano Metakaolin
Author(s): |
A. M. El Nagar
H. M. Khater |
---|---|
Medium: | journal article |
Language(s): | English |
Published in: | Journal of Building Materials and Structures, March 2019, n. 1, v. 6 |
Page(s): | 10-19 |
DOI: | 10.34118/jbms.v6i1.64 |
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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10747287 - Published on:
07/12/2023 - Last updated on:
07/12/2023