The assessment of the value of GPR imaging of flexible pavements

A survey of the different applications of ground penetrating radar (GPR) for highway pavement investigation is presented with a critical appraisal of the success with which it was applied. The problems associated with this technique are also discussed. These include discussions of the accuracy of the technique and the difficulties in trying to interpret the recorded signals. Suggestions for the future direction of the research in this field to enhance the data collection and interpretation are made. The remainder of this paper investigates the advances that can be made in the use of existing GPR technology in the field of thin pavements investigation.

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