Performance of Ultrasonic Equipment for Pavement Thickness Measurement and Other Highway Applications.

摘要

The equipment used was a soniscope and an associated frequency generator and counter for determining resonant frequency through the depth of the pavement slab. It was concluded that the equipment is not satisfactory for measuring pavement thickness. In considering other applications it was found to be useful in determining the continuety of concrete in a structure such as in a survey of a bridge deck to determine areas with deteriorated concrete or incipient spalling. (Author)