f Pavement surveying with the LPC radar

Pavement evaluation surveys always involve a series of more or less destructive tests which, in addition to providing information on the thicknesses of the various pavement layers, are designed to allow an evaluation of the condition of materials and the quality of interfaces . Such testing, with boreholes and core sampling, are long and costly and their number is necessarily limited, thus increasing the uncertainties regarding the determination of these basic pagemeters . Let us add to this that attempting to evaluate the bonding of interfaces by means of core samples which ; by their very nature, disturb the sampled materials significantly, is often an overly optimistic endeavour.