[CS8-14] Non-destructive Inspection of Concrete Bridge Deck Using Horn Antennae
Keywords:road bridge, concrete slab, deterioration, GPR, horn antenna
We have developed anomaly mapping system for the upper plane of concrete slab in road bridges using horn antennae. We acquired in advance concrete slab top reflection waveform from an experiment using a real size physical model. The system detected the arrival time and the relative amplitude of concrete slab top reflection waveform comparing experimental waveform with recieved signal.We applied the system to a real road bridge and detected some anomalies. Near future, we are going to verify the condition of concrete slab after excavation for repairing.
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