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High-Speed Ground Penetrating Radar

Our RoadMap service is a ground-coupled GPR solution that provides a cost-effective method to examine the subsurface conditions of roads and bridges, and deliver insights into deterioration, cracking, delamination, corrosion and other factors that may otherwise remain undetected.  It reveals subsurface anomalies at the inception stage, before they become a threat to structural integrity.

The ground-coupled technology yields extremely high resolution data which is collected at posted speeds, often reducing or completely eliminating the need for traffic control. After the information is captured, it is incorporated into geo-referenced maps combined with a signal amplitude index that illustrates areas of potential deterioration. This can then be transformed into a valuable layer for a CAD or GIS system.

This supports more informed planning around design, rehabilitation and project prioritization which in turn, improves infrastructure reliability. In fact, in 2005, the U.S. Transportation Research Board launched a body of research known as the Strategic Highway Research Program (SHRP2) which concluded that capturing data via non-destructive techniques serves to prevent the premature and unexpected failure of roads and bridge decks.  

Our RoadMap GPR service includes: 

·         Bridge and concrete deterioration analyses
·         Reinforcement bar mapping and density mapping
·         Post tension cable and bridge structural imaging
·         PCC and asphalt thickness measurements
·         Road granular base depth measurements
·         Concrete crack and dowel locating with or without asphalt overlay
·         New concrete structure inspection – void detection
·         Utility detection and mapping, conduit tracing and blockage locating

Benefits of RoadMap GPR:

  • Detect threats to structural capacity early on. A ground-coupled GPR survey picks up on defects and wearing that may otherwise remain undetected. This includes subsurface cracks, voids in the concrete, rebar corrosion and deterioration. Stakeholders can also visualize the location of post tension cables and other subsurface features.

    Unlike traditional inspection techniques, GPR makes it possible to detect anomalies before they materialize into concerns. This data can then be calibrated with existing datasets or core sample results for truly deep insights.  Projects can be prioritized based on severity of the bridge or road condition.
  • Reduce the need for costly destructive testing. Common field investigations often rely on discrete, widely spaced sampling and it is assumed that data residing between samples is consistent, but this is not always the case. GPR fills in these information gaps without compromising structural integrity. Locations for destructive testing can be targeted to areas of distress.
  • Record digital data for future use. Each time a condition survey is completed using GPR, subsurface inspection data can be added to a digital record to be referenced years down the line. This makes it possible to create a predictive model of changing conditions while supporting a better understanding of lifecycle costs, causes of deterioration and the effectiveness of maintenance efforts throughout the aging process.

    Learn more about how non-destructive technology fits into the infrastructure inspection cycle.

Contact us for more information or to request an estimate.