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    Volume 45, Issue 4 (July 2017)

    Use of Embedded Sensors to Evaluate Performance of Traffic Speed Deflection Devices

    (Received 1 September 2015; accepted 28 April 2016)

    Published Online: 2017

    CODEN: JTEVAB

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    Abstract

    Structural adequacy, which is an important aspect of pavement management activities, is typically evaluated using surface pavement deflections measured by the falling weight deflectometer (FWD). Technology that can collect continuous deflection data at traffic speeds can potentially supplant single-point location deflection measurements provided by the FWD for network-level pavement management system (PMS) applications. Previous studies have evaluated the traffic speed deflection devices (TSDD) performance by comparing their results with the FWD measurements. Although appropriate correlations and indices to compensate for the differences in load have been made, a direct comparison under the same loading conditions has not been reported in the literature. The purpose of this paper was to present the results of a field study to evaluate TSDDs by comparing their pavement deflection parameters with those from embedded sensors under actual loads. Two TSDDs were used in this study: the Greenwood traffic speed deflectometer (TSD), and the Applied Research Associates, Inc. (ARA) rolling wheel deflectometer (RWD). The lessons learned from the study are emphasized for further consideration toward developing a calibration methodology for value-added future analyses.


    Author Information:

    Velarde, J. A.
    Center for Transportation and Infrastructure Systems, The Univ. of Texas at El Paso, El Paso, TX

    Rocha, S.
    Center for Transportation and Infrastructure Systems, The Univ. of Texas at El Paso, El Paso, TX

    Nazarian, S.
    Center for Transportation and Infrastructure Systems, The Univ. of Texas at El Paso, El Paso, TX

    Rada, G.
    AMEC Foster Wheeler Environment & Infrastructure, Inc., Beltsville,

    Thyagarajan, S.
    ESC Inc., Turner Fairbank Highway Research Center, McLean, VA

    Siddharthan, R. V.
    Dept. of Civil & Environmental Engineering, Univ. of Nevada Reno, Reno,


    Stock #: JTE20150376

    ISSN:0090-3973

    DOI: 10.1520/JTE20150376

    Author
    Title Use of Embedded Sensors to Evaluate Performance of Traffic Speed Deflection Devices
    Symposium ,
    Committee E17