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Indus Floors has been in the forefront in promoting technological products and we take immense pleasure in giving the best to our clients. Synthetic Macro Fibre Reinforcement
FibreTuff Macro Structural Synthetic Fibres are engineered copolymer fibres used for temperature and shrinkage control or as structural reinforcements in concrete. FibreTuff is used as a replacement for crack control steel mesh in concrete pavements.
FibreTuff synthetic fibre reinforcement system distributes tons of thousands of fibres throughout the concrete mix. When cracking occurs tensile forces are distributed at the exact point of failure, minimising crack propagation as a result of temperature and shrinkage strains.
Characteristics & Usage Benefits: FibreTuff features a unique continually embossed surface, enabling the fibre to achieve maximum bond with the cement matrix for optimum performance.
Macro Structural Synthetic Fibres are highly resistant to acidic and alkaline environments, thus, they do not require concrete cover as protection against corrosion.
| Characteristic | Base Resin | Length | Tensile Strength | Surface Texture | No. Fibers per kg. | Specific Gravity | Youngs Modulus | Melting Point | Ignition Point |
|---|---|---|---|---|---|---|---|---|---|
| Material Property | Modified Olefin | 47 mm | 550Mpa-640Mpa | Continounsly Embossed | 53,000 | 0.90 – 0.92 | 6 Gpa – 10 Gpa | 159°C – 179°C | Greater than 450°C |
FibreTuff manufactured by Bajaj Reinforcements with higher modulus of material between 6 Gpa to 10 Gpa with continually embossed surface anchorage mechanism to enhance bond. FibreTuff Macro Structural Synthetic Fibres conforms to classification BS EN 14889-2, under Class II: Macro fibres > 0.30 mm in diameter with tensile strength between 550 Mpa to 640 Mpa and in lengths 36 mm/ 47 mm/ 54mm / 60 mm.
Dosage : Recommended dosage of FibreTuff varies from 3 Kg/m3 - 5 Kg/m3.
| Welded wire Reinforcement / Wire mesh in slab on grade application | Macro structural synthetic fibres in slab on grade application |
|---|---|
| 1. Provides single Point crack restraint | 1. Provides continuous crack restraint-from bottom |
| . 2Tensile strenght 415 mpa to 550 mpa | 2. Tensile Strength 550 mpa 640 mpa |
| 3. Welded wire Reinforcement / wire mesh is only effective when placed in the correct location, which nearly never happens | 3. Macro fibres are designed in such a way that thousands of fibres are homogenously distributed throughout the concreate mix. Thus the are always placed correctly |
| 4. When cracks occrus, tensile forces are not distributed until the crack has travelled to the depth of reinforcement. This often result in a widening of crack at the surface Of the concrete, increasing the rate of degradation | 4. When cracking occurs tensile forces are distributed at the exact point of failure, minimising crack propagation |
| 5. Bending cutting, placing & typing of steel reinforcement is required thereby increasing labour cost and reducing efficiency and productivity | 5. Ease in mixing, pumping, placing and finishing reinforcing concrete with fibres results in a significant reduction in setup time and overall constrution time |
| 6. Durability problems caused by corrosion of welded wire reinforcement/wire mesh | 6. Long-term durability- corrosion free, inert material and never rusts |
| 7. Causes safety risks such as tripping and falling which may result in injury | 7. These fibres do not raise any health and safety concerns |
| 8. Provides two dimensional (2D) reinforcement | 8. Provides three dimensional (3D) reinforcement. Provide edge and impact protection |
| 9. Concrete cover required for corrosion protection of welded wire reinforcement/wire mesh | 9. Requirement of concrete cover is eliminated and thus pavement thickness can be optimised |
| 10. Normally 12 metres of networking is achiveved per m3 of concrete | 10. 8 kmsof fibre network is achieved per m3 of concrete. (This networking gives excellent crack control) |
| 11. Highly expensive as compared to macro structural synthetice fibres | 11. Approx 50% saving in cost as compared to conventional reinforcement |
| 12. Truck mixer/pan mixer has to be located beyond the flooring area | 12. Mixers can go to pouring site as three is no welded wire reinforcement |
Conventional RCCMacro Structural Synthetic fibre reinforced concrete
Provides single point crack restraintProvides continuous crack restraint – from bottom of slab to right below the surface Tensile strength - 415 mpa - 550 mpaTensile Strength - 550 mpa - 640 mpa
Conventional RCC/Welded wire mesh is only effective when placed in the correct location, which nearly happensMacro structural synthetic fibres are designed in such a way that thousands of small fibres are homogenously distributed throughout the concrete mix. In short it is always placed correctly.
When cracks occur, tensile forces are not distributed from the concrete to the steel until the crack has travelled to the depth of reinforcement. This often result in a widening of crack at the surface of the concrete, increasing the rate of degradationWhen Cracking occurs tensile forces are distributed at the exact point of failure, minimising crack propagation as a result of temperature and shrinkage strains
Many steps are involved in installation - estimating, scheduling, ordering, storage space, setting cover blocks and bending cutting placing tying of steel mesh is required thereby increasing labour cost and reducing efficiency and productivity.Ease in mixing, pumping, placing and finishing - faster construction by eliminating the need to cut and place mesh, reinforcing concrete with fibres results in a significant reduction in setup time and overall construction time.
Durability problems caused by corrosion of conventional RCC/WWM.Long-term durability – corrosion free, inert material and will never rust
Causes safety risks such as tripping and falling which may result in injury These fibres do not raise any health and safety concerns. Truck mixer/ Pan mixer has to be located beyond the flooring area.Mixers can go to pouring site as there is no reinforcement.
Benefits of using FibreTuff Macro Structural Synthetic fibres
- Significantly improves shrinkage and temperature crack control
- Safer and lighter to handle than steel
- Doesn’t stain concrete with rust marks
- Reduced carbon footprint
- Increases post crack load capacity/ toughness
- Reduced explosive spalling
- Reduced plastic settlement
- Reduced permeability
- Reduced bleeding
- Increased flexural strength
- Increased tensile strength
- Increased impact resistant
- Increased ductility
- Increased residual strength
- Potential for increase in joint spacing
- Increased fatigue resistance
- Increased energy absorption
- Tunnelling & Mining
- Portal Stabilisation
- Ventilation Shaft
- Shotcrete FRS
- Segment Lining
- Invert Slab
- Roadway
- Residential Terrace screeds
- Outdoor concrete pavements
- Swimming pools
- Boundary walls
- Basement car park and over ground parking lots
- Driveways and crossovers
- Footpaths and cycle path
- Roadways
- Screeds
- Commercial & Industrial Flooring
- Hardstands
- Engineered slabs
- Flooring
- Composite slab
- Driveways
- Tilt-Up walls
- Marine Structures
- Breakwaters & Foreshore Protection
- Marinas Wharves and Jetties
- Retention Basins, Culverts, Canals
- Retaining Walls
- Offshore Platforms
- Bridges & Piers
- Artificial Reefs
Dosing fibres in a Transit/ Truck Mixer after batching the concrete, the following procedure must be followed:
Position the truck mixer near the stacked bags
Ensure the slump is >120 mm at the time of adding fibre
Ensure the agitator is revolving at a maximum speed once it arrives at site
Add fibre bag to the mix, don't just dump it, carry a rod to tap the fibres in hopper of transit mixer - see that the fibre are dosed as if it is poured from a sieve Ensure each bag is allowed to mix for 45 secs. - 60 secs. before the next bag is added. Also, let the transit mixer keep rotating at a good speed during fibre addition. Generally, mixers should rotate at a speed of 14 - 15 rotations per minute
Once the fibre is added, continue to rotate the mixer for 70 rotations at full speed or for minimum of 5 - 6 mins Easily pumpable even through bends, macro structural synthetic fibre reinforced concrete is ready to be poured
FibreTuff Macro structural synthetic fibres:
- Can be used to replace steel mesh and welded wire reinforcement
- Do not leave a 'hairy' finish on the concrete
- Do not negatively affect finishing techniques
- Are not made of fibreglass or a steel / plastic composite
- Do not 'ball' in the concrete
- Do not damage pumping equipment
- Do not greatly reduce concrete slump
