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    Investigation of deterioration in corroding reinforced concrete beams using active and passive techniques

    Access Status
    Fulltext not available
    Authors
    Sharma, A.
    Sharma, S.
    Sharma, S.
    Mukherjee, Abhijit
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Sharma, A. and Sharma, S. and Sharma, S. and Mukherjee, A. 2018. Investigation of deterioration in corroding reinforced concrete beams using active and passive techniques. Construction and Building Materials. 161: pp. 555-569.
    Source Title
    Construction and Building Materials
    DOI
    10.1016/j.conbuildmat.2017.11.165
    ISSN
    0950-0618
    URI
    http://hdl.handle.net/20.500.11937/65444
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Elsevier Ltd Electro-chemical techniques that are routinely used in monitoring corrosion of reinforced concrete give an overall estimate of corrosion. Non-destructive techniques that are able to estimate the residual strength of corroding structures would help a great deal in strategizing post-corrosion maintenance. This paper explores two non-destructive techniques based on wave propagation for estimating residual strength of corroding reinforcement in concrete. The specimens undergoing corrosion were simultaneously monitored by acoustic emission (passive) and ultrasonic guided wave (active) techniques. The specimens were instrumented with AE sensors to record acoustic activities inside the specimens during corrosion. Simultaneously, the bars are also monitored by propagating ultrasonic waves through the bars. Active and passive monitoring results are correlated with already established electrochemical techniques to determine the relative efficacies of the NDT technologies. At the end of the exposure, the residual strength of the bars has been determined by tensile testing.

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