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    Properties of fly ash geopolymer concrete designed by Taguchi method

    167826_167826.pdf (243.7Kb)
    Access Status
    Open access
    Authors
    Olivia, Monita
    Nikraz, Hamid
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Olivia, Monita and Nikraz, Hamid. 2011. Properties of fly ash geopolymer concrete designed by Taguchi method. Materials and Design 36: pp. 191-198.
    Source Title
    Materials and Design
    DOI
    10.1016/j.matdes.2011.10.036
    ISSN
    0264-1275
    School
    Department of Civil Engineering
    Remarks

    NOTICE: this is the author’s version of a work that was accepted for publication in Materials & Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials & Design, 36, 2011 <a href="http://dx.doi.org/10.1016/j.matdes.2011.10.036">http://dx.doi.org/10.1016/j.matdes.2011.10.036</a>

    URI
    http://hdl.handle.net/20.500.11937/14840
    Collection
    • Curtin Research Publications
    Abstract

    This paper presents an optimization of fly ash geopolymer mixtures by Taguchi method,and a study on the mechanical properties and durability of concrete produced from the optimal mixes. A total of nine mixtures were evaluated by considering the effects of aggregate content, alkaline solution to fly ash ratio, sodium silicate to sodium hydroxide ratio, and curing method. Ordinary Portland Cement (OPC) concrete of 55 MPa strength was used as a control mix. Three optimal mixtures (T4, T7 and T10) were identified. Results show that the geopolymer concrete can be produced with of 55 MPa at 28 days. They had higher tensile and flexural strength, produced less expansion and drying shrinkage, and showed moduli of elasticity that were 14.9-28.8% lowerthan those of the OPC control mix. The compressive strength of all geopolymer mixtures changed significantly at each wetting-drying cycle, but the weight losses were higher than that of the OPC concrete. Half-cell potential measurement showed that the geopolymer mixes were generally more prone to corrosion, although showed low-level corrosion activity and exhibited times to failure that were 3.86-5.70 times longer than those of the OPC concrete. The test results confirmed that the mechanical properties of the geopolymer mixtures tested are competitive with those of OPC concrete and provide a more durable alternative to the OPC concrete in a seawater environment.http://dx.doi.org/10.1016/j.matdes.2011.10.036

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