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)