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Infrastructure et actifs Inspection des structures en béton

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Non-destructive testing on the Huntingdon Railway Viaduct

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The Proceq GP8800 GPR being used to locate the post-tension ducts

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The Pundit PD8050 being used to detect hidden voids in the concrete.

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GPR Scan with Proceq GP8800 showing the path of the PT duct.

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Radargram view showing double reinforcing bars above the PT duct (apart from the last 2 bars on the right.)

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Results from the PD8050 showing localised voiding, taken over the same location as the GPR scans. Additionally the double rebars appear to have voiding around them.

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Air voiding as shown with Pundit PI8000 ultrasonic impact echo techonology, taken in the same spot as the PD8050.

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Augmented reality representation of the void taken with the Pundit PD8050 ultrasonic pulse echo technology.

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3D scan showing incorrectly placed reinforcing steel

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GPR Data displayed on the iPad revealing an incorrectly placed transverse reinforcing steel.

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Augmented reality view of the GPR data results showing the rebar configuration with missing horizontal rebar at the top.

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3D view showing PT Ducts sitting under location of missing horizontal reinforcement

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The red areas indicate where air is present within the duct using UPE technology.

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A 3D scan of the test area shown above appears to show voiding of a PT duct.

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