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    Test of Dynamic Mechanical Properties of Ambient-Cured Geopolymer Concrete Using Split Hopkinson Pressure Bar

    91471.pdf (659.0Kb)
    Access Status
    Open access
    Authors
    Huang, Z.
    Chen, Wensu
    Hao, Hong
    Aurelio, R.
    Li, Z.
    Pham, Thong
    Date
    2022
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Huang, Z. and Chen, W. and Hao, H. and Aurelio, R. and Li, Z. and Pham, T.M. 2022. Test of Dynamic Mechanical Properties of Ambient-Cured Geopolymer Concrete Using Split Hopkinson Pressure Bar. Journal of Materials in Civil Engineering. 34 (2): ARTN 04021440.
    Source Title
    Journal of Materials in Civil Engineering
    DOI
    10.1061/(ASCE)MT.1943-5533.0004074
    ISSN
    0899-1561
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/FL180100196
    URI
    http://hdl.handle.net/20.500.11937/91647
    Collection
    • Curtin Research Publications
    Abstract

    The application of geopolymer concrete (GPC) in construction could reduce a large amount of carbon dioxide (CO2) emission, which is greatly beneficial to environmental sustainability. Structures made of GPC might be subjected to extreme loading such as impact and blast loads. Therefore, a good understanding of the dynamic properties of GPC is essential to provide reliable predictions of performance of GPC structures subjected to dynamic loading. This study presents an experimental investigation on the dynamic compressive and splitting tensile properties of ambient-cured GPC using split Hopkinson pressure bar (SHPB), with the strain rate up to 161.0 s-1 for dynamic compression and 10.3 s-1 for dynamic splitting tension. The failure mode and damage progress of GPC specimens, energy absorption, and dynamic increase factor (DIF) were studied. Test results showed that ambient-cured GPC exhibited strain rate sensitivity. The compressive and splitting tensile DIFs increased with the strain rate and the ambient-cured GPC with lower quasi-static compressive strength exhibited higher DIFs under both dynamic compression and splitting tension. Empirical formulas were proposed to predict the DIF of ambient-cured GPC. Furthermore, the specific energy absorption of ambient-cured GPC under dynamic compression increased approximately linearly with the strain rate.

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