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Inspeção de Infraestrutura Civil 15 itens

Ground-Penetrating Radar Bridge Deck Scan

Este checklist está em inglês.

Non-destructive bridge deck evaluation using ground-penetrating radar to map deterioration, rebar cover, and delamination per ASTM D6087.

ASTM D6087ASTM D4748FHWA Deck Evaluation (NDE)

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Survey Planning

  • NBI structure number *
  • Date of survey *
  • Antenna frequency used (MHz)
  • Is traffic control in place per the approved MOT plan? *

Calibration & Acquisition

  • Is the GPR system calibrated and depth/velocity verified for the deck? *
  • Are survey lines/grid spacing consistent with specified coverage? *
  • Line/grid spacing used (feet)
  • Is positional referencing (DMI/GPS/station marks) recorded?

Data Interpretation

  • Are areas of top-mat rebar amplitude attenuation (deterioration) mapped? *
  • Estimated percent deck area deteriorated (%)
  • Is measured concrete cover over top reinforcement within expected range?
  • Are results corroborated with chain-drag / impact-echo where available?

Reporting & Actions

  • Is a deterioration contour/quantity map produced for repair planning? *
  • Is deck rehabilitation or overlay quantity estimated from the scan?
  • Findings and recommended actions

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