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GPR
Technical Services
Bridge
Deck Inspection
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Applications
Delamination
Deterioration
Debonded Overlay
Overlay Thickness
Depth of Reinforcement |
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GPR
Data Collection
GPR Data Analysis
Results
GPR Standards
Penetradar Technical Services can assist you with GPR bridge deck delamination
and deterioration surveys on asphalt covered and exposed concrete
bridge decks. GPR can provide quantitative information on the location and quantity of
deteriorated concrete and corrosion induced delaminations, the depth of
reinforcing steel and thickness or bond of overlays. Our GPR bridge deck
surveys are conducted at highway speeds and require no traffic control,
thereby eliminating traffic interruptions. GPR is a cost
effective source of quantitative information for bridge and maintenance
engineers, that can be used for determining repair quantities and
preparing project cost estimates, or for high speed inspection of bridge
deck networks.
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GPR
Data Collection - GPR data are collected in a series of
longitudinal scans along the length of the bridge deck,
at high speed and without traffic interruption. Multiple antennas
(antenna array) are used to cover an entire lane for one-pass inspection. Our
IRIS GPR antenna array ensures that all antenna scans are
properly correlated and that detections are properly identified in
location and size. GPR
can be used effectively on exposed concrete or overlaid bridge
decks.
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GPR
Data Analysis - GPR data are analyzed to detect
corrosion induced delamination located at the reinforcing steel,
scaled (freeze-thaw damaged) concrete, debonded overlays, depth of reinforcing steel and
overlay thickness.
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BRIDGE DECK
DETERIORATION MAP |
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Results
- Fully analyzed results are provided in CAD form as plan-view deck maps showing the location and extent of
delamination and deterioration, or depth of reinforcement and
overlay thickness. Depth of reinforcement and overlay thickness
are also shown as numerical listings or in ASCII file format. |
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GPR
Standards - GPR data are analyzed in accordance with
AASHTO TP-36, SHRP C-101 and ASTM D6087-03/05. |
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