Serravalle tunnel, Italy

Project type:

• Subway tunnel 

Application: 

• Spray concrete

Partners: 

• Owner: Trans-European Transport Network (TEN-T)
• Contractors: COCIV (Consorzio Collegamenti Integrati Veloci)
• Ready-mix: Unicalcestruzzi Spa, Calcestruzzi Spa, Consorzio Vallemme  

The challenge

COCIV decided to reinforce the tunnel with spray concrete to minimize construction costs and times. The geology of the Serravalle project site consists mostly of sandstone and marls, but with medium to high risk of fractures. Choosing the right reinforcement was of essence.

The solution

To increase the ductility of the concrete, the temporary lining of the tunnel is reinforced with 30 kg/Cum Dramix® 3D steel fibers. Combining high performance, durability and ease-of-use, Dramix® 3D steel fibres offer a time-saving and cost-efficient alternative to traditional concrete reinforcement solutions.

Pictures copyrighted by COCIV