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    Sulphate resistance of slag blended fly ash based geopolymer concrete

    Access Status
    Fulltext not available
    Authors
    Deb, Partha
    Nath, Pradip
    Sarker, Prabir
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Deb, P. and Nath, P. and Sarker, P. 2013. Sulphate resistance of slag blended fly ash based geopolymer concrete, in Dao, V. and Dux, P. (ed), Proceedings of the 26th Biennial National Conference of the Concrete Institute Australia: Understanding Concrete, Oct 16-18 2013. Gold Coast, QLD, Australia: Concrete Institute of Australia.
    Source Title
    Concrete 2013: Proceedings of the 26th Biennial National Conference of the Concrete Institute of Australia
    Source Conference
    Understanding Concrete,
    ISBN
    9781877040733
    School
    Department of Civil Engineering
    URI
    http://hdl.handle.net/20.500.11937/9625
    Collection
    • Curtin Research Publications
    Abstract

    Inclusion of ground granulated blast furnace slag (GGBFS) together with fly-ash can have significant effects on the development of strength and durability properties of geopolymer concrete when cured at normal temperature. To study the effect of GGBFS in fly ash based geopolymer concrete, four different geopolymer mixtures suitable for curing at ambient temperature and an ordinary Portland cement concrete were used. A combination of sodium hydroxide and sodium silicate alkaline activator was used to react with fly ash and GGBFS. GGBFS was added as 10% and 20% of the total binder. The durability of GGBFS blended fly ash based geopolymer concrete in sulphate environment was tested. The changes in weight, length and compressive strength due to exposure in sodium sulphate solution for different periods of time were determined. The test results demonstrate that GGBFS blended fly ash based geopolymer concrete cured at normal temperature has good resistance to sulphate attack. In general, inclusion of GGBFS with fly ash in geopolymer concrete improved strength and performed satisfactorily in sulphate environment when cured in ambient temperature.

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