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

    Effects of curing conditions and sand-to-binder ratios on compressive strength development of fly ash geopolymer

    Access Status
    Fulltext not available
    Authors
    Khan, M.
    Shaikh, Faiz
    Hao, Y.
    Hao, Hong
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Khan, M. and Shaikh, F. and Hao, Y. and Hao, H. 2018. Effects of curing conditions and sand-to-binder ratios on compressive strength development of fly ash geopolymer. Journal of Materials in Civil Engineering. 30 (2): Article ID 04017267.
    Source Title
    Journal of Materials in Civil Engineering
    DOI
    10.1061/(ASCE)MT.1943-5533.0002119
    ISSN
    0899-1561
    School
    School of Civil and Mechanical Engineering (CME)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP160104557
    URI
    http://hdl.handle.net/20.500.11937/61100
    Collection
    • Curtin Research Publications
    Abstract

    This paper investigates the effects of curing conditions on a high-strength geopolymer material synthesized by activating different combinations of Class F fly ash (FA), ground-granulated blast-furnace (slag), and ultrafine fly ash (UFFA) with a unified mixture of D-grade sodium silicate (Na 2 SiO 3 ) and 12-M sodium hydroxide (NaOH) solutions. The effect of ambient air and water curing on the strength properties, cumulative porosity, and microstructure of geopolymer mortar samples was evaluated at room temperature. Subsequently, the effects of two different sand-binder ratios, the amount of FA replacement with UFFA, and slag on the short-term mechanical properties and workability of geopolymer mixtures is also discussed. The results show that the geopolymer specimens cured in water possessed a higher total porosity in relation to the air-cured samples. Air curing resulted in additional polymerization and fewer microcracks were observed within the scanning electron microscope photographs, which led to an increased compressive strength. Moreover, the use of UFFAwas observed to significantly improve the strength of FA-slag blended geopolymers, where reduced porosity and denser microstructure in FA geopolymers was observed with the inclusion of slag at higher quantities.

    Related items

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

    • Carbonation Curing on Magnetically Separated Steel Slag for the Preparation of Artificial Reefs
      Li, Jiajie; Zhao, Shaowei; Song, Xiaoqian; Ni, Wen; Mao, Shilong; Du, Huihui; Zhu, Sitao; Jiang, Fuxing; Zeng, Hui; Deng, Xuejie; Hitch, Michael (2022)
      Magnetic separation is an effective method to recover iron from steel slag. However, the ultra-fine tailings generated from steel slag become a new issue for utilization. The dry separation processes generates steel slag ...
    • Workability and compressive strength properties of high strength geopolymer mortars
      Khan, M.; Shaikh, Faiz; Hao, Y.; Hao, Hong (2017)
      Geopolymer is an attractive sustainable binder as compared to Ordinary Portland Cement (OPC) in concrete. Recent investigations show that mechanical properties of heat cured geopolymers are similar or comparatively better ...
    • Effects of slag content on the residual mechanical properties of ambient air-cured geopolymers exposed to elevated temperatures
      Shaikh, Faiz (2018)
      This paper presents the effects of various slag contents on the residual compressive strength and physical properties of ambient air-cured fly ash-slag blended geopolymers after exposure 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.