Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Effect of cooling methods on residual compressive strength and cracking behaviour of fly ash concretes exposed at elevated temperatures

    42178.pdf (872.3Kb)
    Access Status
    Open access
    Authors
    Shaikh, Faiz
    Vimonsatit, Vanissorn
    Stewart, B.
    Jack, F.
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Shaikh, F. and Vimonsatit, V. and Stewart, B. and Jack, F. 2015. Effect of cooling methods on residual compressive strength and cracking behaviour of fly ash concretes exposed at elevated temperatures. Fire and materials. 40 (2): pp. 335-350.
    Source Title
    Fire and materials
    DOI
    10.1002/fam.2276
    ISSN
    1099-1018
    School
    Department of Civil Engineering
    Remarks

    This is the peer reviewed version of the article cited above, which has been published in final form at http://doi.org/10.1002/fam.2276. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving at http://olabout.wiley.com/WileyCDA/Section/id-820227.html#terms

    URI
    http://hdl.handle.net/20.500.11937/42198
    Collection
    • Curtin Research Publications
    Abstract

    This paper presents the effects of cooling methods on residual compressive strength and cracking behavior of concretes containing four different class F fly ash contents of 10%, 20%, 30% and 40% as partial replacement of cement at various elevated temperatures. The residual compressive strength of the aforementioned fly ash concretes is measured after being exposed to 200, 400, 600 and 800 °C temperatures and two different cooling methods, for example, slow cooling and rapid water cooling. Results show that the residual compressive strengths of all fly ash concretes decrease with increase in temperatures irrespective of cooling regimes, which is similar to that of ordinary concrete. Generally, control ordinary concrete and all fly ash concretes exhibited between 10% and 35% more reduction in residual compressive strength because of rapid cooling than slow cooling except few cases. Cracks are observed over concrete specimens after being exposed to temperatures ranging from 400 to 800 °C. Samples that are slowly cooled developed smaller cracks than those rapidly cooled. At 800 °C, all fly ash concretes that are exposed to rapid cooling showed the most severe cracking. X-ray diffraction analysis shows reduction of Ca(OH)2 peak and formation of new calcium silicate peak in concretes containing 20% and 40% fly ash when subjected to 800 °C in both cooling methods. Thermo gravimetric analysis and differential thermal analysis results show increase in thermal stability of concrete with increase in fly ash contents. The existing Eurocode also predicted the compressive strength of fly ash concretes with reasonable accuracy when subjected to the aforementioned elevated temperatures and cooling methods.

    Related items

    Showing items related by title, author, creator and subject.

    • Effect of cooling methods on residual compressive strength and cracking behaviour of fly ash concretes exposed at elevated temperatures
      Shaikh, Faiz; Vimonsatit, Vanissorn (2015)
      This paper presents the effects of cooling methods on residual compressive strength and cracking behaviour of concretes containing four different class F fly ash contents of 10%, 20%, 30% and 40% as partial replacement ...
    • Mechanical properties of concrete containing recycled coarse aggregate at and after exposure to elevated temperatures
      Shaikh, Faiz (2018)
      This paper presents the effect of recycled coarse aggregate (RCA) of 50% and 100% by wt. on compressive strength and elastic modulus of concrete at elevated temperatures of 600 and 800 °C. The residual compressive strengths ...
    • Mechanical properties of steel fibre reinforced geopolymer concretes at elevated temperatures
      Shaikh, Faiz; Hosan, A. (2016)
      This paper presents the effects of two types of alkali activators (Na and K-based) on the residual mechanical properties of steel fibre reinforced geopolymer concretes (SFRGC) after exposed to various elevated temperatures ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.