Beneficial Use of Multiple NDE Technologies in Condition Assessment of Reinforced Concrete Bridge Decks

To overcome limitations of individual technologies, a complementary approach using several NDE technologies should be used in RC evaluation. The presented approach utilizes a suite of NDE technologies, namely: impact echo (IE), ultrasonic surface waves (USW), ground penetrating radar (GPR), half-cell potential and electrical resistivity. The application of listed technologies is illustrated on material characterization and defectdeterioration detection of RC bridge decks. The NDE evaluation was complemented by “ground-truth” measurement on the cores extracted from all nine bridge decks.

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