Minnesota Department of Transportation

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Road Research

Research Topics

GPR Van

Ground Penetrating Radar - Application of GPR in Pavement Evaluations

Benefits of GPR

  • Produces a continuous pavement thickness profile
  • Reduces the number of cores and testing time
  • Reduces Road Damage
  • Increases Field Safety
  • Reduces Analysis Time

Limitations of GPR

  • Sensitive to Ground Water
  • Limited Depth
  • May not detect thickness of concrete or base layer if there is insufficient contrast

Potential applications of GPR

  • Determine Pavement Layer Thickness
  • Estimate Material Properties
  • Identify Stripping Zones within Asphalt
  • Detect Subsurface Voids
  • Analyze Rutting Mechanisms
  • Detect Subsurface Anomalies
  • Rebar and Dowel Bar Locates

GPR reports

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