From portalto invert.

Controlled removal of deteriorated concrete from sidewall and crown linings, with minimal vibration and depths ranging from a few centimetres to over 50 cm. We then rebuild the final lining: render, structural sprayed concrete or full reconstruction of the reinforced concrete crown.

We waterproof underground and above-ground reinforced concrete structures with PVC membranes bonded to non-woven geotextile, to project specifications, together with drainage pipes that protect the works from natural water ingress.

We build tunnels using conventional methods, from primary support to final linings, as well as foundation, drainage and service shafts, adits, cross-passages and emergency exits for road, motorway, railway and hydraulic infrastructure.

Reinforced concrete works for infrastructure and civil and industrial buildings: tunnel linings, cut-and-cover tunnels, portals, trenches, kerbs, decks and precast slabs. We use variable-radius formwork designed and patented by the group, and overhead systems for safe rebar placement.

Ground consolidation and improvement to secure tunnels, portals and slopes: retaining walls, deep foundations, anchors, radial drilling and crack stitching in existing linings.

Excavation, haulage, embankments and trenches with our own fleet, including management of spoil and non-hazardous waste in line with environmental regulations and our ISO 14001 certified system.