Application of
Concrete Precast Elements
STEEL FIBER OFFER THE HIGHEST POTENTIAL FOR SUBSTITUTING TRADITIONAL REINFORCEMENT
FAST AND DEPENDABLE REINFORCEMENT IN PRECAST APPLICATION
Steel fibres can serve to optimise processes considerably, with the result being significant cost savings. When used for concrete precast elements such as pipes, chutes, tubing, or pre-fab cellars, the exceptional material properties of FIBPRO steel fibres have proven to be perfect for reinforcement. An example of steel fibres replacing rebar stirrups and working in combination with traditional reinforcement is precast girders.Major precast elements can be constructed with steel fibres as the sole reinforcement, for example waste-water pipes and tunnel linings.Steel fibre reinforced concrete can solve these problems as it is easy to place and to consolidate. Steel fibre reinforced concrete can reach sufficient bearing capacities for handling and even full ductility for the final state, depending on the fibre type and dosage rate
ADVANTAGES OF STEEL FIBRE IN PRECAST CONCRETE
FEATURES
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BENEFITS
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COST ANALYSIS
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BENEFITS
Reduce construction time by omitting the rebar installation process
Able to construct through fast-track approach using Laser Screed equipment
High resistance to cracking; increase in toughness (residual strength) after cracking, rise in reinforcement effect 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 .
Increased surface hardness due to burnishing.
Reduce working hours and construction costs.
Increased crack suppression effect compared to RC method
| DISADVANTAGES OF CONVENTIONAL REINFORCEMENT IN PRECAST | ADVANTAGES OF STEEL FIBER IN PRECAST |
|---|---|
| More expensive production cost. | Economic and cost saving technology. |
| Surface of the concrete is more prone to damages specially for long distance travelling. | Surface of the concrete is less prone to damages. |
| Conventional reinforcement take much more time to install. | Low material cost and concrete is directly poured. |
| More Prone to chipping in concrete surface | Replaces shear reinforcement which is complicated with prestressed precast element . |
| 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. |
DISADVANTAGES
OF CONVENTIONAL REINFORCEMENT IN TUNNEL CONSTRUCTION
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ADVANTAGES
OF CONVENTIONAL REINFORCEMENT IN TUNNEL CONSTRUCTION
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Recommended Products For Precast Concrete
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 applicationsFibers 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 55/50 BL HT* | 55 | 50 | 0.90 | 1150 N/MM2 | Shotcrete/Precast |
| FIBPRO-3X 55/50 BL | 55 | 50 | 0.90 | 1500 N/MM2 | Shotcrete/Precast |
| FIBPRO-3X 50/50 BL | 50 | 50 | 1 | 1100 N/MM2 | Shotcrete/Precast |
| FIBPRO-3X 50/50 BL HT* | 50 | 50 | 1 | 1400 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 concreteFibers 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 80/60 BG | 80 | 60 | 0.75 | 1200 N/MM2 | Shotcrete/Precast |
| FIBPRO-3X 80/60 BG HT* | 80 | 60 | 0.75 | 1450 N/MM2 | Shotcrete/Precast |
| FIBPRO-3X 65/60 BG HT* | 65 | 60 | 0.90 | 1450 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
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
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.