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    In situ elevated temperature testing of fly ash based geopolymer composites

    241382_241382.pdf (9.216Mb)
    Access Status
    Open access
    Authors
    Vickers, L.
    Pan, Z.
    Tao, Z.
    Van Riessen, Arie
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Vickers, L. and Pan, Z. and Tao, Z. and Van Riessen, A. 2016. In situ elevated temperature testing of fly ash based geopolymer composites. materials. 9 (6): Article ID 445.
    Source Title
    materials
    DOI
    10.3390/ma9060445
    School
    John de Laeter CoE in Mass Spectrometry
    Remarks

    This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by-nc-sa/4.0/

    URI
    http://hdl.handle.net/20.500.11937/36995
    Collection
    • Curtin Research Publications
    Abstract

    In situ elevated temperature investigations using fly ash based geopolymers filled with alumina aggregate were undertaken. Compressive strength and short term creep tests were carried out to determine the onset temperature of viscous flow. Fire testing using the standard cellulose curve was performed. Applying a load to the specimen as the temperature increased reduced the temperature at which viscous flow occurred (compared to test methods with no applied stress). Compressive strength increased at the elevated temperature and is attributed to viscous flow and sintering forming a more compact microstructure. The addition of alumina aggregate and reduction of water content reduced the thermal conductivity. This led to the earlier onset and shorter dehydration plateau duration times. However, crack formation was reduced and is attributed to smaller thermal gradients across the fire test specimen.

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