Polypropylene Fibers
Description
Polypropylene Fibers
Polypropylene fibers are widely used to strengthen and arm concrete, cement and gypsum mixture. The use of this type of fibers will increase the flexural, tensile, shear and abrasion strength of concrete.
Features:
- Increased elasticity modulus of concrete relatively high melting point
- Suitable alternative to thermal rebar
- Reinforced concrete resistance to impact increases
Applications:
- Suitable for producing fireproof concrete
- Ability to run reinforced concrete without rebar consumption
- Suitable for the production of cement sheets
Technical specification table :
| state of | Interwoven threads and mesh threads |
| Color | white |
| Special Weight | gr/cm 0/91 |
| Melting range | 165 degrees Celsius |
| Percentage increase in length | 80 % |
| Immersion in water | 3 to 5 seconds |
| Percentage increase in length | 2 times |
| Tensile strength | 400 MPa |
Package:
20kg bag
Product Description – Polypropylene Fiber
Polypropylene fibers are widely used to strengthen and reinforce concrete and cement and gypsum mixtures. The use of this type of fiber increases the flexural, tensile, shear and abrasion resistance of concrete. By adding these flooring fibers, the cohesive properties of concrete will increase. Polypropylene fibers are produced with two cuts of 12 and 18 mm for concrete applications and with a longitudinal cut of 6 mm for gypsum and thin mortars. Polypropylene fibers are widely used in the production of thin-thick concrete walls, because in these types of parts it is not possible to use conventional reinforcing bars and polypropylene fibers play the role of reinforcing these sections. Polypropylene fibers alone have low resistance to fire, sunlight and oxygen, but when placed in mortar or concrete, they actually create a kind of protective coating for it, which helps to minimize sensitivity to fire and other environmental effects. Propylene fibers are widely used in industrial flooring and can act as rebar in concrete to reinforce it. They also have the ability to increase the ductility of concrete.
In general, PP concrete fibers are a synthetic fiber made from the polymer polypropylene (PP). PP offers higher working temperatures and tensile strength than polyethylene. These concrete fibers also provide increased strength, durability, and resistance to chemicals and heat.
Polypropylene fiber packaging
20 kg bag
Storage of polypropylene fibers
Duration: Three years in original packaging.
Conditions: Away from cold and frost, heat and direct and prolonged sunlight.
Best storage temperature: +10 to +30 degrees
Consumption of polypropylene fibers
The amount of polypropylene fiber consumption varies according to the type of structural element. The average amount of PP fiber consumption varies from 1 to 3 kilograms per cubic meter depending on the desired performance. For example, the average amount of polypropylene fiber consumption in slabs is about one kilogram per cubic meter. This amount reaches 2 to 3 kilograms in floors.
How to use polypropylene fibers
- Polypropylene fibers can be added to concrete at any time.
- Typically, polypropylene fibers are first mixed with aggregate and then water is added.
- You can mix polypropylene fibers with the mixing water and then add this water to the dry mortar, in which case you should continue stirring for 3 to 4 minutes to achieve a uniform and homogeneous mixture.
- Polypropylene fibers can be poured into the mixer gradually and mixing at high speed can be continued until complete dispersion of the polypropylene fibers is ensured within the concrete.
Note: Polypropylene fibers usually reduce slump. Especially if the volume used is high and the fibers are longer, the workability of the concrete will be reduced. For this reason, it is recommended to use a concrete superplasticizer along with the fibers to lubricate the mixture and increase workability.
Table of physical and chemical properties of polypropylene fibers
| Title | Feature |
| Mode | Fiber |
| Color | White |
| Specific gravity | 0.91gr/cm |
| Melting temperature | 165 degrees Celsius |
| Percentage elongation | 80% |
| Immersion in water | 3 to 5 seconds |
| Tensile strength | 400mpa |
Properties and effects of polypropylene fibers
- Increasing the durability and lifespan of concrete
- Reducing cracking caused by moisture and temperature changes
- Increased alkali resistance
- Increasing the impact resistance of concrete
- Increasing the modulus of elasticity of concrete
- Relatively high melting point
- The right alternative to thermal rebar
- Increasing the cohesion and adhesion properties of concrete
- Absence of polyester in the formulation for the production of polypropylene fibers
- Preventing cracks caused by concrete shrinkage
- Increased energy absorption capacity in tension and bending
- Development of mechanical properties of concrete
- Increasing the ductility of concrete
- Reduction of plastic cracks and cracks in hardened concrete
Applications of polypropylene fibers
- Suitable for producing malleable concrete
- Suitable for flooring in industrial factories and warehouses.
- Suitable for producing concrete with high impact and abrasion resistance
- Possibility of implementing reinforced concrete without using rebar
- Suitable for producing thin-thick reinforced concrete without reinforcement
- Usability in shotcrete mortar
- Production of fireproof and fire-resistant concrete
- Suitable for use in ready-mixed concrete and production of prefabricated parts
- Suitable for producing cement sheets
Safety of polypropylene fibers in concrete
- This substance is flammable.
- If swallowed, consult a doctor.
- Polypropylene concrete fibers are not toxic or hazardous materials, but due to the slow biodegradability of synthetic polymer materials in nature, they will pose a problem for the environment if left in nature.
- Wear appropriate gloves when working.
Mechanism of action of polypropylene fibers
Adding polypropylene fibers to the concrete mix increases the physical, chemical, and frictional adhesion properties of concrete. In fact, polypropylene fibers within the concrete matrix act as a reinforcement or so-called reinforcement, preventing concrete from breaking and cracking, and in cracks, they act as a bridge between two cracks.
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