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    Strength and Hydration Heat of Concrete using Fly Ash as a Partial Replacement of Cement

    171492_13527_51386.pdf (159.1Kb)
    Access Status
    Open access
    Authors
    Sarker, Prabir
    McKenzie, Luke
    Date
    2009
    Type
    Conference Paper
    
    Metadata
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    Citation
    Sarker, Prabir and McKenzie, Luke. 2009. Strength and Hydration Heat of Concrete using Fly Ash as a Partial Replacement of Cement, in R I Gilbert (ed), Concrete Solutions 09, The 24th Biennial Conference of the Concrete Institute of Australia, Sep 17 2009. Luna Park, Sydney: Concrete Institute of Australia.
    Source Title
    Proceedings of the 24th Biennial Conference of the Concrete Institute Australia
    Source Conference
    The 24th Biennial Conference of the Concrete Institute of Australia
    School
    Department of Civil Engineering
    Remarks

    Publication Date: 2009-09-01

    URI
    http://hdl.handle.net/20.500.11937/33479
    Collection
    • Curtin Research Publications
    Abstract

    The benefits of using fly ash as a partial replacement for cement in concrete are well documented. This paper presents the strength development and hydration heat properties of concrete using Class F fly ash sourced from Western Australia. Compressive strengths at different ages were determined and semi-adiabatic temperature rise during the initial stage of hydration was measured by thermocouples. The 28-day compressive strengths of two control concrete mixtures were 62 and 68 MPa. It was found from the experimental results that the average 28-day compressive strengths of concretes with 30% and 40% cement replacements by fly ash were 84% and 63% of the strengths of the respective control mixtures. However, the 90-day strength of concrete with 30% cement replacement was equal to the strength of the control concrete. A 20% reduction in the maximum temperature was observed in the concrete with 40% cement replacement by the fly ash. It is found from the test data that the percentage reduction in the maximum temperature of fly ash concrete can be estimated as one-half of the percentage replacement of cement by fly ash.

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