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    Dynamic resistance capacity of GPC slab under pendulum impact loading

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    Authors
    Chen, Chong
    Zhang, Xihong
    Hao, Hong
    Date
    2023
    Type
    Journal Article
    
    Metadata
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    Citation
    Chen, C. and Zhang, X. and Hao, H. 2023. Dynamic resistance capacity of GPC slab under pendulum impact loading. Journal of Cleaner Production. 406: pp. 137144-137144.
    Source Title
    Journal of Cleaner Production
    DOI
    10.1016/j.jclepro.2023.137144
    ISSN
    0959-6526
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/91728
    Collection
    • Curtin Research Publications
    Abstract

    Geopolymer concrete (GPC) as a green construction material has the potential to substitute traditional concrete, but there is a lack of understanding of the performances of geopolymer concrete structures subjected to dynamic loadings. This study investigates the dynamic responses of reinforced concrete slabs made of ambient cured alkali-activated GPC under static and dynamic concentrated load. Laboratory tests are performed which revealed that GPC slabs exhibited typical punching shear failure model under both static and impact load. Current design codes including ACI, Eurocode 2 and CSCT model can well predict the static punching resistance capacity of GPC slab, but fail to predict the dynamic punching resistance. Numerical modelling is carried out to investigate the dynamic punching shear mechanism. The results indicate that the impact response of GPC slab is highly influenced by inertial effect. In the initial response stage the impact force is mainly resisted by the slab inertial resistance. The GPC dynamic material properties and structural dynamic amplification effect affect the dynamic response and damage of GPC slabs. Intensive numerical simulations are performed to quantify the influences of slab thickness, reinforcement ratio, impactor weight and impact velocity on impact responses of GPC slabs. Empirical formula is derived based on the test and numerical results to predict the dynamic punching resistance of reinforced GPC slabs.

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