PP Fiber
PP
Fiber, namely polypropylene fiber, is a synthetic fiber made from polypropylene through processes like melt spinning. Its characteristic state attributes are as follows: It appears as white or transparent filaments, with a density of about 0.91g/cm3, lighter than water. It has high strength and good elasticity, with an elongation at break of 20%-35%. It shows excellent chemical stability, resistant to acids, alkalis, and organic solvents. The melting point is about 165-175℃, with good heat resistance. It has low hygroscopicity, hardly absorbing water. It has good wear resistance and is resistant to microorganisms and moths. However, its light resistance is slightly poor, and it is easy to age after long-term exposure to the sun, which can be improved by adding additives.
BENEFITS
- Improves the ductility of concrete
- Transfers tensile stresses and bridges cracks in cementitious applications
- Decreases crack propensity due to constrained deformations induced by drying shrinkage and temperature gradients and allows to partially or fully substitute related mesh reinforcement
- Excellent resistance in alkaline and acidic environment
- Provides rust free reinforcing solutions
- Easy to dose with limited impact on workability
- Cost saving,Is easier to use,to disperse and safe handle.
- No negative impact regarding machinery wear
RECOMMENDED DOSAGE
2.5 –9.0 kg/m3
Higher dosages are generally possible but substantial re- design of a given concrete mix design is required. The
dosage rate is dependent on the application.
GUIDELINE FOR USE
Appropriate fiber dispersion can be achieved either by
adding the fibers to the aggregate belt or by adding the
fibers via a sufficient dosing equipment directly into the
mixer or ready mix truck to the already mixed concrete. While processing attention shall be paid that fibers do not separate or agglomerate (e.g. during discharge to mixer), regarding the latter one special care should be taken that fibers are added to zones with sufficient shear. Our recommendation is to continue mixing for minimum 90-120 seconds after the addition of fibers. Very high fiber dosages may require significantly higher mixing time in order to achieve sufficient fiber dispersion.
ADVICE
The addition of fibers to a concrete might decrease its consistency. This should not be compensated by adding water to the mix. The recommendation is to optimize the mix either by adapting the mix design or by adding a superplasticizer. The mechanical performance of fibers is influenced by the concrete mix design and cementitious materials used. In order to evaluate properly preliminary tests under practical conditions with regard to mixing, placing and curing are advisable.
For any further advice, please contact your local technical sales contact.
STORAGE AND DISPOSAL
The shelf life is 24 month, if stored in original packaging between +5 °C and +30 °C in a closed room protected from humidity (water soluble bundles) and direct sun light. In addition, fibers should be protected against fire
The disposal of the product and its packaging is the responsibility of the end user. Please take into account requirements according to local legislation.
HEALTH AND SAFETY
If treated according to the purpose of use no harm or injury to be expected. Common rules of occupational health and safety should be applied while handling this fiber.
PACKAGING
5,0 kg water soluble bundles in carton boxes For other packaging options please contact us.
Macro Polypropylene Fibre
| Technical Data | |
| Polymer type | Polypropylene |
| Colour | White |
| Density | 0,91 g/cm3 |
| Fiber sectional shape | Irregular |
| Fiber surface | Embossed |
| Equivalent diameter | 0.9±0.1 mm |
| Fiber length | 55 mm |
| Tensile strength (acc. EN 14889-2) | 650 MPa |
| Modulus | 10 GPa |
| Melting point TS | ca. 170 。C |
| Ignition point Ti | ca. 590 。C |
| Logistics | |
| Transport | No dangerous goods according to transport regulations |
| Disposal | Combustible in appropriate facilities considering locally applicable guidelines |
| Marking according to EC-Guidelines | No obligation for indication |
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