Condition Evaluation of Existing Decks...

As a reinforced concrete bridge deck deteriorates with time and exposure, a proper diagnosis and preventive maintenance schedule, whereby smaller and less expensive repairs are made at properly timed intervals throughout the life of the structure, significantly extends its life and reduces the costs associated with its ownership. (See earlier discussions on baseline condition assessments and QA verification of construction related to this topic).

Presence, Pattern and Density (PPD) of Rebar

• Ground Penetrating Radar (GPR)

Rebar Condition/Corrosion

• Ground Penetrating Radar (GPR)
• Half-Cell Corrosion Potential

Concrete Condition/Integrity

• Ground Penetrating Radar (GPR)
• Impact Echo (IE)
• Surface Wave Methods: SASW/MASW and USW Spectral Analysis of Surface Waves (SASW)/Multiple Channel Analysis of Surface Waves (MASW) and Ultrasonic Surface Waves (USW)

Incipient Spalling

• Ground Penetrating Radar (GPR)
• Impact Echo (IE)
• Surface Wave Methods: Spectral Analysis of Surface Waves (SASW)/Multiple Channel Analysis of Surface Waves (MASW) and Ultrasonic Surface Waves (USW)

Vehicle Mounted Ground Penetrating Radar (GPR) Systems

• GPR Method One
• GPR Method Two
• GPR Method Three