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    Compressive Strength and Thermal Expansion Properties of Geopolymer Concrete at Elevated Temperature

    Access Status
    Fulltext not available
    Authors
    Ahmed, Shaikh
    Vimonsatit, Vanissorn
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Ahmed, Shaikh F. U. and Vimonsatit, Vanissorn. 2012. Compressive Strength and Thermal Expansion Properties of Geopolymer Concrete at Elevated Temperature, in Fontana, M. and Frangi, A. and Knobloch, M. (ed), 7th International Conference on Structures in Fire, Jun 6-8 2012, pp. 571-579. Zurich, Switzerland: Eidgenössische Technische Hochschule Zürich and EMPA Materials Science & Technology.
    Source Title
    Proceedings of the 7th International Conference on Structures in Fire
    Source Conference
    7th International Conference on Structures in Fire
    URI
    http://hdl.handle.net/20.500.11937/30016
    Collection
    • Curtin Research Publications
    Abstract

    This paper presents the results of an experimental study on the effect of elevated temperature up to 800°C on the compressive strength and thermal expansion of geopolymer concrete. The effects of molarity of alkali activator and curing conditions on the compressive strength of geopolymer concrete at elevated temperature up to 800°C are also studied. The results show that, the geopolymer concrete gained between 10% and 50% of its ambient strength after exposure to 800°C temperature, compared to 80% loss of OPC concrete. Geopolymer concrete exhibited about 10% less strain to that of OPC concrete mix containing same aggregates. Geopolymer concrete with low molarity (10 Molars) benefited with significant strength gain whereas geopolymer concrete with high molarity (16 Molars) only attained minor increase in strength at elevated temperatures above 400°C. The same is true when geopolymer concrete was cured for a longer duration.

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