Rehabilitation of the motorway bridge extrados

During the removal of the asphalt with a milling machine, areas of deteriorated concrete were identified on the extrados of the bridge slab, which were initially not visible. A subsequent detailed survey made it possible to precisely map the compromised areas and define the extent of the intervention.

The clean-up operation was carried out through robotised hydrodemolition, a technique that allows only the degraded concrete to be selectively removed while preserving the healthy part of the structure; therefore, at a preliminary stage, the water pressure has been carefully calibrated to ensure maximum effectiveness in removing inconsistent material without compromising intact portions.

This approach ensured high precision, safety and selectivity, optimally preparing the surfaces for the subsequent structural restoration and consolidation.

The rubble resulting from the demolition was collected by suction excavator, a solution that made it possible to operate quickly and cleanly, limiting the dispersion of material and facilitating subsequent management and recovery operations.
The material thus recovered was initiated to a selection and reuse process, in accordance with the criteria of circular economy and environmental sustainability, reducing the volume of waste sent to landfill and favouring the recovery of reusable aggregates within the production cycle.