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    Detection of delamination between steel bars and concrete using embedded piezoelectric actuators/sensors

    Access Status
    Fulltext not available
    Authors
    Zhu, X.
    Hao, Hong
    Fan, K.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhu, X. and Hao, H. and Fan, K. 2013. Detection of delamination between steel bars and concrete using embedded piezoelectric actuators/sensors. Journal of Civil Structural Health Monitoring. 3: pp. 105-115.
    Source Title
    Journal of Civil Structural Health Monitoring
    DOI
    10.1007/s13349-013-0039-2
    ISSN
    2190-5452
    URI
    http://hdl.handle.net/20.500.11937/24895
    Collection
    • Curtin Research Publications
    Abstract

    The interface between concrete and steel in reinforced concrete governs the interaction between thetwo types of materials under loading. When the interface is seriously damaged, such that a macro-crack is formed, debonding may take place or large slip may occur, and the load-transferring capacity of the interface would drop dramatically. This paper presents a novel technique to detect the delamination between the steel bars and concrete in the reinforced concrete structures. The piezoelectriccomponents are mounted on reinforcing bars embedded in RC structures as sensors and actuators to generate the signal, which is sensitive to the delamination between the steel bars and concrete. The experimental study is carried out on two concrete slabs with different debonds between the rebars and concrete. Three parameters are calculated from the measured responses and used to indicate thebonding damage. The test results show that the debond damage between the rebars and concrete can be detected with the embedded piezoelectric sensors and actuators.

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