Penetradar

DECL invested in a Penetradar system in 2009 for the following reasons:

  •     To acquire data for the purpose of doing proper road designs as the company has moved into this area
  •     To provide a service to government agencies and private firms who want to ensure that work done is to specifications.
  •     To improve our own standard of work by having more information available so as to improve planning and minimize errors.


What is ground penetrating radar

  •     Unique Type of Downward Looking Radar Designed for Penetration of Solid Materials such as Soils, Concrete, Asphalt, etc.
  •     Applications include Detection and Identification of Buried, Metallic and Non-Metallic Objects, Geotechnical & Geophysical
  •     Survey, Infrastructure Evaluation, i.e. Pavement & Bridges


What is penetradar used for?
1.Bridge deck evaluation

  •     Assess Condition of Asphalt-Covered and Exposed Concrete Decks
  •     Asphalt-Cover Thickness and Depth of Rebars
  •     Detect and Locate Corrosion Induced Delaminated Concrete, Debonded Overlays, Freeze-Thaw Damage and   Waterproofing Membrane Failure


2.Pavement evaluation

  •     Identify Pavement Structure: Number of Layers, Type of Material
  •     Determine Layer Thickness
  •     Detect and Locate Voids Beneath Rigid Pavement
  •     Detect Areas of High Subsurface Moisture
  •     Detect Deteriorated Concrete
  •     GPR detects Areas of High Accumulation of Moisture Beneath Pavement or Tunnel Walls Based Upon Reflectivity at a Material Interface


Capabilities of  Ground penetrating radar (GPR)

  •     Locate Buried Utility Lines
  •     Locate Foundations
  •     Buried Tanks & Drums
  •     Others


How is GPR Utilized in Pavement and Bridge Deck Management

  •     Prioritize Maintenance
  •     QA/QC - Determine Contract Requirements Compliance
  •     Quantitative Information to Assist in Engineering Decisions
  •     Routine Inspection to Monitor Subsurface Condition (Biannual Inspections)
  •     Database Information (PMS)
  •     Preventative Maintenance
  •     Diagnostic Inspection (Cause of Failure)
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