Can Non-destructive Testing Prolong The Life of an Aging Infrastructure?
Sasha GollishDecember 3rd 2008
How Does Non-Destructive Testing Apply to Highways
• The Highway Design Process• What Type of Repair to Use
•How is the Pavement Evaluated•What Nondestructive test are used in
the evaluation•The Future of Highway Repair
The Highway Design Process
The Repair Method
The Evaluation Process
Typical Structural Detail of Pre-Cast
Slab
Non-Destructive Testing at the Construction Level
Falling Weight Deflectometer Testing
MTO Guidelines with the FWD Test
Load Transfer Efficiency
Low(Crack < 13mm)
Medium (Crack 13-25mm)
High (Crack >25mm)
Good(>70%)
JPCP - Consider Other Data to Determine RepairJRCP & Joints – Do Nothing
JPCP – Full Depth JRCP & Joints – Consider Other Data to Determine Repair
All – Full Depth Repair
Fair (50-70%)
JPCP – Full Depth JRCP & Joints – Consider Other Data to Determine Repair
All – Full Depth Repair All – Full Depth Repair
Poor(< 50%)
All – Full Depth Repair All – Full Depth Repair All – Full Depth Repair
Ground Penetrating
Radar
Other Non-Destructive Tests
• Rebound Hammer/Hammer Schmidt• Penetration• Pull-Off• Magnetic/Electric Method• Maturity• Nuclear• Strain Gauges
The Future of Pre-Cast Panels
Thank you
Questions?