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Ground-penetrating radar recognition

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Auscultation of structure

Pissy-Pôville tunnels (76)

Contracting authority :    SNCF Réseau

Prime contractor :            SNCF Réseau

As part of the structural diagnosis work on masonry tunnels lined with sprayed concrete, the SNCF Réseau contracting authority is seeking to identify the reinforcement mesh, the thickness of the steel coating and the total thickness of the sprayed concrete.

This mission was carried out by georadar reconnaissance using a chassis developed for the occasion, followed by a core drilling campaign at 1.5 m and 4.6 m heights.

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