Ground Penetrating Radar (GPR) is a nondestructive testing tool for evaluating pavements. The system described in this report uses an air launched antenna which is suspended between 10 and 14 inches above the pavement and has been shown capable of operating adequately at close to highway speed (+ or - 40 mph). This report describes the system developed and implemented for the Texas Department of Transportation (TxDOT). The system includes a Penetradar PS-24 Ground Penetrating Radar system, a Texas Transportation Institute (TTI) developed data acquisition and signal processing system, a data acquisition vehicle housing a Distance Measuring Instrument and synchronized video recording system. The hardware, software and data processing procedures will be described together with several case studies in which GPR has been used to evaluate pavement rehabilitation jobs in Texas. These applications include layer thickness determination, void detection, base course evaluation and locating areas of asphalt stripping.


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    Title :

    Implementation of the Texas Ground Penetrating Radar System (Revised)


    Contributors:
    T. Scullion (author) / C. L. Lau (author) / Y. Chen (author)

    Publication date :

    1994


    Size :

    108 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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