Integration of Thermal Infrared (IR) Imaging into the Caltrans Inspection Program for Pavements and Bridge Decks
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2024-05-30
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Edition:Final Report: August 2021 – May 2024
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Abstract:The California Department of Transportation (Caltrans) must inspect pavement and bridge decks to support proactive infrastructure maintenance. By leveraging non-destructive evaluation technologies for sensing and data processing, Caltrans would improve the speed and efficiency of this critical duty. The Strategic Highway Research Program recognized the utility of Thermal IR for early identification of shallow-seated deterioration in pavements and bridge decks. Early detection allows for repair and rehabilitation ahead of significant degradation, saving time and money on maintenance. Caltrans has installed a thermal infrared (IR) system on its 3D Ground-Penetrating Radar (GPR) vehicle, allowing georeferenced visual black and white and thermal IR imaging of pavement and deck surfaces concurrent with 3D GPR imaging of the subsurface. This research continues integration of the technology within Caltrans inspection practices through identification of commercial software solutions and development of processes and procedures for acquisition of georeferenced thermal IR data; processing of data to enhance, isolate, and visualize thermal anomalies; and interpretation and presentation of results. This report documents the research effort and results.
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Main Document Checksum:urn:sha-512:631167245100e02906c34e339869205c945196f1df1bb7da2b1003dfabba55353d651bc8e984942c208a29a1cbf97c6840c936f7a87d4a7791140f802fdd1ee3
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