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    Effect of mixing proportion on compressive strength of fly-ash based geopolymer paste and mortar using Taguchi’s method

    Access Status
    Fulltext not available
    Authors
    Khan Afridi, S.
    Vimonsatit, Vanissorn
    Date
    2015
    Type
    Conference Paper
    
    Metadata
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    Citation
    Khan Afridi, S. and Vimonsatit, V. 2015. Effect of mixing proportion on compressive strength of fly-ash based geopolymer paste and mortar using Taguchi’s method, in Proceedings of the 8th International Structural Engineering and Construction Conference: Implementing Innovative Ideas in Structural Engineering and Project Management, Nov 23-28 2015, pp. 669-674. Sydney, NSW: ISEC Society.
    Source Title
    Implementing Innovative Ideas in Structural Engineering and Project Management
    Source Conference
    8th International Structural Engineering and Construction Conference
    ISBN
    978-0-9960437-1-7
    School
    Department of Civil Engineering
    URI
    http://hdl.handle.net/20.500.11937/37124
    Collection
    • Curtin Research Publications
    Abstract

    Alkali activated pozzolan are known low carbon cementitious binders which can be used to replace cement. The material is also known as geopolymer because of its three dimensional polymeric chain and ring like structure consisting silica and alumina. A common type of pozzolan used is fly ash because of its rich silica content; therefore the term alkali activated fly-ash based binders is adopted. Despite much research and development of this material, there is no specific standard for design mix proportion. This research used the Taguchi’s design of experiment method to determine the optimum mix proportion of alkali activated fly ash based cement paste and mortar. Four factors were considered in the tests, silica fume, sand to cementitious ratio, liquid to solid ratio, and percentage of superplasticiser. Tests were conducted on the 9 batches of alkali activated fly-ash based paste and mortar samples to determine the compressive strength under ambient condition. Tests were also conducted to determine the residual strength of the samples after exposed to elevated temperatures. ANOVA analysis of the test results revealed the main factors contribution on the tested properties and led to the determination of the optimum design proportion of the factors considered in these tests.

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