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  • A Study of the Structural Performance of Flexible Pavements Using Traffic Speed Deflectometer

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    Author(s)
    Manoharan, S
    Chai, G
    Chowdhury, S
    Golding, A
    Griffith University Author(s)
    Chowdhury, Sanaul H.
    Year published
    2018
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    Abstract
    The falling weight deflectometer (FWD) is a non-destructive testing device that has been used by many road agencies worldwide since 1980 for structural evaluation of flexible pavements. In early 2000, the world first Doppler laser-based traffic speed deflectometer (TSD) was developed by Greenwood Engineering, and now eight TSD vehicles are in use worldwide. The two main advantages of the TSD technology are: (a) the ability to carry out continuous bearing capacity measurements instead of discrete points, (b) that testing can be carried out at traffic speeds without the need for lane closures with a stationary device such as ...
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    The falling weight deflectometer (FWD) is a non-destructive testing device that has been used by many road agencies worldwide since 1980 for structural evaluation of flexible pavements. In early 2000, the world first Doppler laser-based traffic speed deflectometer (TSD) was developed by Greenwood Engineering, and now eight TSD vehicles are in use worldwide. The two main advantages of the TSD technology are: (a) the ability to carry out continuous bearing capacity measurements instead of discrete points, (b) that testing can be carried out at traffic speeds without the need for lane closures with a stationary device such as FWD. The objective of this paper was to study the structural performance of flexible pavements using TSD deflection data. The study successfully established a correlation between maximum deflections TSD-D0 and FWD-D0 that are derived from the two devices. This study also drew some interesting conclusions in that deflection data collected by TSD could be transformed to FWD equivalent structural numbers with simple models as derived in the study. The outcome of this study was an established methodology for reporting structural performance at network level utilizing TSD deflection data.
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    Journal Title
    Journal of Testing and Evaluation
    Volume
    46
    Issue
    3
    DOI
    https://doi.org/10.1520/JTE20160189
    Copyright Statement
    © 2018 ASTM International. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Infrastructure engineering and asset management
    Materials engineering
    Mechanical engineering
    Publication URI
    http://hdl.handle.net/10072/380426
    Collection
    • Journal articles

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