Steel Fibre Reinforced Concrete for Tunnel Lining Segments

Quelle/credit: Victor Marcos, COWI A/S

Overview of the tunnels with Steel Fibre Reinforced Concrete worldwide

Quelle/credit: Victor Marcos, COWI A/S

Quelle/credit: ARGE Marti Belchen

For the renovation of the Tunnel Belchen in Switzerland segments with steel fibre reinforced concrete were used for the tunnel lining

Quelle/credit: ARGE Marti Belchen

Quelle/credit: Met Nord JV Züblin Hochtief

Transport of the SFRC segments to the jobsite in Copenhagen

Quelle/credit: Met Nord JV Züblin Hochtief

Quelle/credit: C. Dauberschmidt

Current, originating from an electrified (DC) railway line, picked up by traditional reinforcement embedded in concrete

Quelle/credit: C. Dauberschmidt

The application of steel fibres to reinforce concrete is becoming more and more interesting due to many advantages regarding the durability and sustainability of the construction. Especially the great range of mechanically bored tunnels all over the world where steel fibre reinforced concrete (SFRC) was and is in use for tunnel lining segments shows the capabilities of this construction material.

Compared to conventional steel reinforcement, the usage of steel fibre reinforced concrete segments for tunnel linings offers many advantages. The production process of the segments is simpler and the formation of cracks during handling and installation is distinctly reduced. Due to their higher resistance against corrosion and cracking stresses as well as their great impact toughness, the segments are more durable. Their service life is longer, their repair and maintenance demands are small and, on top, the production costs are significantly lower than for conventional steel reinforced tunnel...