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    Influence of fibre shapes on dynamic compressive behaviour of fibre reinforced concrete

    Access Status
    Fulltext not available
    Authors
    Xu, Z.
    Hao, Hong
    Li, H.
    Date
    2011
    Type
    Journal Article
    
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    Citation
    Xu, Z. and Hao, H. and Li, H. 2011. Influence of fibre shapes on dynamic compressive behaviour of fibre reinforced concrete. Applied Mechanics and Materials. 82: pp. 112-117.
    Source Title
    Applied Mechanics and Materials
    ISSN
    1660-9336
    URI
    http://hdl.handle.net/20.500.11937/15495
    Collection
    • Curtin Research Publications
    Abstract

    In this paper results are reported of impact tests performed to study the influence of different fibre types on dynamic compressive properties of fibre reinforced concrete (FRC). FRC specimens are prepared with the same concrete and 1% of fibres of different types. The compressive impact tests are conducted with an instrumented drop weight impact system consisting of a hard steel drop weight, two 180t fast response loadcells, a high speed video camera, and a fast response data acquisition system. In this study, six fibre types with different shapes and material properties are considered. They are synthetic fibres, undulated, cold rolled, flattened, hooked end and a new spiral shape steel fibres. The dynamic stress-strain relationship is obtained by fitting the load history from the bottom loadcell to the average strain history captured by the strain gages. The energy absorption capabilities are defined as the area under the stress-strain curve of FRC specimens. The performance of the new spiral shape steel fibre is discussed by comparing the test results with those obtained from specimens reinforced with other types of fibres. The influence of the fibre shapes on the failure modes, ductility and energy absorbing capacity of FRC is discussed.

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