THE ASSESSMENT OF THE VALUE OF GPR IMAGING OF FLEXIBLE PAVEMENTS

A survey of the different applications of ground penetrating radar (GP R) for highway pavement investigation is presented with a critical app raisal of the success with which it was applied. The problems associat ed with this technique are also discussed. These include discussions o f the accuracy of the technique and the difficulties in trying to inte rpret the recorded signals. Suggestions for the future direction of th e research in this field to enhance the data collection and interpreta tion are made. The remainder of this paper investigates the advances t hat can be made in the use of existing GPR technology in the field of thin pavements investigation. (C) 1998 Elsevier Science Ltd. All right s reserved.