Utilizing Ground Penetrating Radar for Roadway Structure Inspections

The nondestructive mapping of anomalies and voids under roadway pavements is critical to highway authorities because of the potential safety hazards caused by the loss of support. A 400 MHz Ground Coupled Penetrating Radar (GCPR) was utilized in this study to characterize subsurface voids. To enhance the understanding of the data collection and interpretation, different thicknesses of calibration concrete slabs with different depths of voids were designed and constructed. In addition, a field study using the GCPR was also conducted on US-290 with visible settlement. The extents of the anomalies in the horizontal and vertical directions were accurately identified from the GCPR images. Coring was performed to verify the extent of the subsurface void conditions. Fortunately, the voids near the drainpipes were detected by GCPR in time. Otherwise, the void would have been progressed in size, and that could have led to a severe hazard to the general public. This study has successfully demonstrated that the GCPR is able to identify anomalies and voids. Engineers can utilize the information from GCPR to undertake remedial actions with confidence.

• Record URL:
  https://doi.org/10.1061/47626(405)2
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784476260
• Supplemental Notes:
  • Copyright © 2011 ASCE
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Chen, Dar-Hao
  • Lee, Jeffrey L
• Conference:
  • GeoHunan International Conference 2011
  • Location: Hunan , China
  • Date: 2011-6-9 to 2011-6-11
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 8-15
• Monograph Title: Contemporary Topics on Testing, Modeling, and Case Studies of Geomaterials, Pavements, and Tunnels

Subject/Index Terms

• TRT Terms: Ground penetrating radar; Inspection; Pavements; Radar; Settlement (Structures)
• Uncontrolled Terms: Anomalies; Voids
• Subject Areas: Highways; Maintenance and Preservation; Pavements; I60: Maintenance;

Filing Info

• Accession Number: 01347825
• Record Type: Publication
• ISBN: 9780784476260
• Files: TRIS, ASCE
• Created Date: Aug 8 2011 2:21PM