Fibre Reinforced Concrete in Tunneling

In mechanized tunnelling, a TBM (Tunnel Boring Machine) installs concrete segments and is becoming a more common method in the tunnelling world.
Particularly in urban areas or geologically difficult situations, the use of a TBM is a very attractive option. Mechanized tunnelling has increased continuously for over 30 years.

Conventional tunnelling can be defined as the construction of underground openings of any shape with a cyclic construction process composed of the following key steps: 

• excavation
• mucking
• placement of the primary support.

 When the temporary lining is fully stabilized, a permanent cast in place concrete lining can be installed to contain long-term loads, and provide durability and water tightness.

	Application	Product
	Temporary Lining (spray concrete)	Dramix® 3D 6535BG Steel Fibres Synmix® 55 Macro Synthetic Fibres
	Segment Reinforcement	Dramix® 4D 8060BG Steel Fibres
	Final Lining (spray concrete)	Dramix® 4D 6535BG Steel Fibres
	Shaft & Cast in Place Lining	Dramix® 5D 6560BG Steel Fibres
	Fire Resistance	Duomix® M6 Fire Micro Synthetic Fibres

 Take advantage of our expertise and have a look at our fibre reinforced tunnelling and mining projects around the globe, or download the lists here:

• Precast Segmental Lining
• Cast in Place / Final Lining
• Spray Concrete