Innovations in Bridge Superstructure Condition Assessment with Sonic and Radar Methods

Results are presented for nondestructive evaluation (NDE) of concrete bridge girders and decks with sonic Impact Echo Scanning with a handheld scanner for voided versus grouted post-tensioned ducts and a bridge deck scanner for deck conditions (void, honeycomb, delamination), respectively. Structural health monitoring (SHM) of displacements and vibrations of bridges with non-contacting interferometric phase radar are also discussed.

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