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    Influence of fly ash fineness on water requirement and shrinkage of blended cement mortars

    237295_237295.pdf (595.3Kb)
    Access Status
    Open access
    Authors
    Vimonsatit, Vanissorn
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Vimonsatit, V. 2015. Influence of fly ash fineness on water requirement and shrinkage of blended cement mortars. KKU Engineering Journal. 42 (4): pp. 311-316.
    Source Title
    KKU Engineering Journal
    DOI
    10.14456/kkuenj.2015.37
    ISSN
    0125-8273
    School
    Department of Civil Engineering
    Remarks

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

    URI
    http://hdl.handle.net/20.500.11937/12223
    Collection
    • Curtin Research Publications
    Abstract

    In this paper, the influence of fly ash fineness on water requirement and shrinkage of blended cement mortar was studied. The results indicate that the water requirement and shrinkage characteristic of the blended cement mortar are dependent on fly ash fineness and replacement level. The use of coarse fly ash slightly reduces the water requirement but greatly reduced the drying and the autogenous shrinkage of the blended cement mortars and the reduction is more with an increase in the fly ash replacement level. The finer fly ashes further reduce the water requirement, but increase the drying and the autogenous shrinkages as compared with coarser fly ash. The incorporation of superplasticizer drastically reduces the water requirement, but the effect on the drying and autogenous shrinkages of the normal Portland cement mortar is small. However, for the fly ash mortar, the use of superplasticizer results in a decrease in drying shrinkage and in a substantial increase in the autogenous shrinkage particularly for the fine fly ash at a high replacement level.

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