Ground penetrating radar (GPR) can be used as a tool for assessing the condition of the pavement structure at locations of surface distress, as well as identifying locations of previous subsurface maintenance activities that are not visible at the surface of the pavement.
In assessing the existing condition of a pavement structure, locations of past maintenance activities are often overlooked, or concealed by rehabilitation activities such as mill and overlays. Potential problem areas may not be evident at the time of evaluation, and if ignored could increase the rate of deterioration of the pavement structure. Proper identification of potential problem areas could provide a more accurate assessment of the existing pavement condition and better understanding of the performance of a pavement structure. Understanding the deterioration of a pavement structure, will in turn allow owner agencies to calibrate forecasting tools in their pavement/asset management systems.
Combining a GPR survey with traditional pavement condition investigations techniques usually proves to be beneficial for pavement evaluation. The results of a GPR survey provide valuable information by identifying subsurface problem areas, areas of previous full-depth and partial-depth repairs.
GPR Roadway Analysis can form a valuable part of a comprehensive and cost effective maintenance program.
Contact us for further information on the benefits of GPR roadway surveys and specific proposals.