Ground penetrating radar (GPR) is a noninvasive, continuous, high-speed tool that has been used to map subsurface conditions in a wide variety of applications. Many of these applications are well suited for evaluation of highway systems. GPR is basically a subsurface "anomaly" detector, as such it will map changes in the underground profile due to contrasts in the electromagnetic conductivity across material interfaces. This report will give the local engineer a brief overview of GPR equipment, use and applications. It will help the engineer understand the potential GPR applications for use on local roads, assist in determining what situations or site conditions that GPR is appropriate, and where it is not.
This Implementation Summary pertains to Report 2018-32, “Cone Penetration Test Design Guide for State Geotechnical Engineers,” published November 2018.
This Technical Summary pertains to LRRB-produced Report 2015-11, “Development of a Sensor Platform for Roadway Mapping: Part B—Mapping the Road Fog Lines,” published April 2015.
This Technical Summary pertains to report 2019-12, MnDOT Slope Vulnerability Assessments, published March 2019, and report 2019-28, MnDOT Slope Vulnerability Assessments Phase 2, published July 2019.
