Application of
Tunnels Shotcreting

SPRAYED CONCRETE, IN-SITU CONCRETE AND LINING SEGMENTS

FAST AND DEPENDABLE REINFORCEMENT IN TUNNEL CONSTRUCTION.

Regardless of whether a tunnel is being driven by conventional machinery or by a tunnelling machine, FIBPRO supports tunnellers in all aspects of reinforcement work by providing the necessary know-how, technical solutions and services – all from a single source. Our range includes a wide variety of fibre types for all project-related demands on the concrete. On request, we can also assume responsibility for assuring the quality of the sprayed concrete, in-situ concrete or tubbing segments. Based on our many years of experience, we combine reinforcement and fire protection in an optimal manner. On the basis of structural and fire protection calculations, we determine the safest and most economical fibre content for you. By choosing FIBPRO as your partner, you can rely on optimised fibre concrete and rapid construction progress. Because we know why.

ADVANTAGES OF FIBRE CONCRETE IN TUNNEL CONSTRUCTION

FEATURES

BENEFITS

COST ANALYSIS

BENEFITS

Increase reinforcement effects with wall of even thickness on a rugged surface
Increase tensile strength, bending strength, shear strength of concrete; no hollowing-out ; reduction of wall thickness(20%)
High resistance to cracking; increase in toughness (residual strength) after cracking Shotcrete construction possible right after excavation; drop in risk of cave-in disasters; rise in reinforcement effects and safety of permanent structures

COST EFFECTIVENESS

Reduce labor costs, as no reinforcement assembly process is required Reduce working hours and construction costs
Reduce construction cost due to shortened construction period.
Reduce working hours and construction costs.

QUALITY

Streamlined work process; rise in quality and safety .
Reduce construction cost due to shortened construction period.
Reduce working hours and construction costs.
Reduce working hours and construction costs.

DISADVANTAGES
OF CONVENTIONAL REINFORCEMENT IN TUNNEL CONSTRUCTION
ADVANTAGES
OF STEEL FIBER REINFORCEMENT IN TUNNEL CONSTRUCTION
The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.
The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.
The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.
The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.
The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.The surface of the concrete is unprotected and susceptible to damage resulting from the greater spacing with classic reinforcement.
design-131964743682655291

DISADVANTAGES

OF CONVENTIONAL REINFORCEMENT IN TUNNEL CONSTRUCTION

design-131964743682655291

ADVANTAGES

OF CONVENTIONAL REINFORCEMENT IN TUNNEL CONSTRUCTION

Recommended Products For Tunnel Construction

LOOSE STEEL FIBER

Cold drawn wires with high strength, low carbon hooked end steel fibres.Loose fibres offer economical solutions for low & medium dosages in SFRC applications

Fibers made of cold-drawn wire / ASTM A 820 Type I / EN 14889-1 Group I

Product Aspect Ratio Length (mm) Diameter (mm) Strength Application
FIBPRO-3X 55/30 BL 55 30 0.55 1250 N/MM2 Floor(Slab)/Precast
FIBPRO-3X 45/30 BL 45 30 0.65 1175 N/MM2 Shotcrete/Precast
FIBPRO-3X 65/35 BL 65 35 0.55 1250 N/MM2 Floor(Slab)/Precast
FIBPRO-3X 55/35 BL 55 35 0.65 1175 N/MM2 Shotcrete/Precast
FIBPRO-3X 45/35 BL 45 35 0.75 1250 N/MM2 Shotcrete/Precast

Features

  • Provides uniform multi-directional concrete reinforcement
  • Increases crack resistance, ductility, energy absorption or toughness of concrete
  • High tensile strength fibre bridging joints and cracks to provide tighter aggregate interlock resulting in increased load carrying capacity
  • Provides increased ultimate load bearing capacity which allows possible reduction of concrete section
  • Provides uniform multi-directional concrete reinforcement
  • Increases crack resistance, ductility, energy absorption or toughness of concrete
  • High tensile strength fibre bridging joints and cracks to provide tighter aggregate interlock resulting in increased load carrying capacity
  • Provides increased ultimate load bearing capacity which allows possible reduction of concrete section

GLUED STEEL FIBER

Glued Steel Fibres are high tensile cold drawn steel wires with hooked ends, glued together with water soluble glue, for compactness and uniform dispersion in concrete​

Fibers made of cold-drawn wire / ASTM A 820 Type I / EN 14889-1 Group I

Product Aspect Ratio Length (mm) Diameter (mm) Strength Application
FIBPRO-3X 65/35 BG 65 35 0.55 1250 N/MM2 Floor(Slab)/Precast
FIBPRO-3X 55/35 BG 55 35 0.65 1200 N/MM2 Shotcrete/Precast
FIBPRO-3X 45/35 BG 45 35 0.75 1175 N/MM2 Floor(Slab)/Precast
FIBPRO-3X 45/30 BG 45 30 0.75 1175 N/MM2 Floor(Slab)/Precast
FIBPRO-3X 55/30 BG 55 30 0.75 1175 N/MM2 Floor(Slab)/Precast

Features

  • Provides uniform multi-directional concrete reinforcement
  • Increases crack resistance, ductility, energy absorption or toughness of concrete
  • High tensile strength fibre bridging joints and cracks to provide tighter aggregate interlock resulting in increased load carrying capacity
  • Provides increased ultimate load bearing capacity which allows possible reduction of concrete section
  • Provides uniform multi-directional concrete reinforcement
  • Increases crack resistance, ductility, energy absorption or toughness of concrete
  • High tensile strength fibre bridging joints and cracks to provide tighter aggregate interlock resulting in increased load carrying capacity
  • Provides increased ultimate load bearing capacity which allows possible reduction of concrete section

Fibers made of cold-drawn wire / ASTM A 820 Type I / EN 14889-1 Group I

Product Aspect Ratio Length (mm) Diameter (mm) Strength Application
CHO 3X Client tailored aspect ratio, length, linear element ratio, and product packaging.

Features

  • Provides uniform multi-directional concrete reinforcement
  • Increases crack resistance, ductility, energy absorption or toughness of concrete
  • High tensile strength fibre bridging joints and cracks to provide tighter aggregate interlock resulting in increased load carrying capacity
  • Provides increased ultimate load bearing capacity which allows possible reduction of concrete section
  • Provides uniform multi-directional concrete reinforcement
  • Increases crack resistance, ductility, energy absorption or toughness of concrete
  • High tensile strength fibre bridging joints and cracks to provide tighter aggregate interlock resulting in increased load carrying capacity
  • Provides increased ultimate load bearing capacity which allows possible reduction of concrete section
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India Landmark Project, Atal Tunnel

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Railway Tunnel Uttarakhand, India

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For Hydro Power Plant Tunnel, Nepal

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Tunnel Project, Africa

TUNNEL CONSTRUCTION AROUND THE WORLD:

EXPERIENCE IN THE FIELD WITH MARKCHEM® FIBPRO STEEL FIBER

FASTER STRIPPING
OF THE TUBBING SEGMENTS

The tubbing segments can be stripped after just 6 hours. This increases production performance.

SPACE SAVING
STORAGE

As the fibres are uniformly distributed in the components, up to 7 tubbing segments can be stacked on top of each other without any risk of breakage.

TRANSPORT WITH
LESS DAMAGE

Thanks to the uniform distribution of the fibres, the tubbing segments are also more stable against vibration and impact shocks during transport.

GREAT STABILITY
DURING INSTALLATION

When installing with the aid of a tunnelling machine, high loads act on the components. Here too, the stability of fibre concrete is an advantage.

KNOW WHY

TUNNEL CONSTRUCTION

100+

Tunnels

13+ years

experience

50000

tons of fibre used

400 + km

total length

CONTACT US

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