Great Magtech (Xiamen) Electric Co., Ltd. is one of the leading manufacturers and suppliers of polypropylene twisted fiber in China. Please feel free to wholesale high quality polypropylene twisted fiber from our factory. If you have any enquiry about cooperation, please feel free to email us.
What is polypropylene twisted fiber?
Polypropylene stranded fiber, also known as polypropylene spiral fiber, is made from polypropylene through a special parallel drawing and stranding process followed by surface treatment. It features high tensile strength, good dispersibility in concrete, strong bond strength, easy dispersion, easy application, and no damage to mixing equipment, significantly improving the crack resistance, impact resistance, and seismic resistance of concrete. It is widely used in concrete construction, bridges, roads, embankments, and for enhancing the crack resistance, impermeability, and anti-aging properties of cement concrete. Compared to steel fibers, PP stranded fiber offers advantages such as easy dispersion, easy mixing, and no damage to mixing equipment.
Performance Indicators of PP Concrete Fiber
| Name | Stranded Fiber |
| Materia | 100% Modified Polypropylene |
| Color | White, Gray, Black |
| Product Shape | Stranded Bundle |
| Density (g/cm²) | 0.91 |
| Equivalent Diameter (mm) | 0.1-0.3 |
| Length (mm): | 40, 50 (customizable) |
| Melting Point (°C): | 160-170 |
| Model: | LCJL |
| Acid and Alkali Resistance: | Excellent |
| Elastic Modulus (MPa): | >5 GPa |
| Tensile Strength (MPa): | >500 MPa |
| Elongation at Break (%): | >15-25 |
Functions of Polypropylene Twisted Fiber
1. PP fiber can improve the impact resistance, fracture resistance, and abrasion resistance of concrete.
2. Improves the impact and fatigue resistance of concrete.
3. Reduces segregation, plastic settlement, and shrinkage cracks in concrete.
4. Provides three-dimensional reinforcement to prevent macroscopic cracking.
5. Improves overall durability, fatigue resistance, and flexural toughness.
6. Reduces on-site construction costs compared to wire mesh used to control temperature/shrinkage cracks.
7. Can be easily added to the concrete mix at any time before pouring.
8. Highly resistant to acids and alkalis, with excellent durability.
Application of Polypropylene Twisted Fiber
Industrial and residential floors
Whitetoppings, bridge decks, and pavements
Thin-walled pre-cast (septic tanks, vaults, walls, etc.)
Mass concrete
How Do I Use Polypropylene Twisted Fiber In Concrete?
Dosage: For applications requiring high crack resistance and enhancement, a dosage of no less than 2.6 kg per cubic meter of concrete is recommended. For applications requiring moderate crack resistance and enhancement, a mixture of 0.7 kg-0.9 kg of twisted fiber and 0.4 kg-0.6 kg of mesh fiber per cubic meter of concrete will yield better results.
Mixing Process: First, add the aggregate and fiber, then add the sand and cementitious material, and mix thoroughly. Alternatively, the fiber can be added directly along with the aggregate and sand, with a slightly longer mixing time to ensure complete fiber dispersion.
Why choose us?
Direct Manufacturer Supply – We produce and supply polypropylene twisted fibers directly from our factory, ensuring stable quality and competitive pricing without middlemen.
Strict Quality Control – Every batch undergoes tensile strength, elongation, and melting point testing to ensure consistent performance in concrete reinforcement.
Global Export Experience – Our products are exported to over 30 countries, trusted by precast concrete factories and contractors worldwide.
Customizable Options – Fiber length, color, and packaging can all be customized to meet specific project or factory needs.
Fast Delivery & Technical Support – We maintain sufficient inventory and provide prompt technical guidance for mixing ratios and application in precast production.
one-stop solution
professional team
high quality
FAQ
Q: What is polypropylene twisted fiber used for?
A: Polypropylene twisted fiber is mainly used to reduce cracking and improve the toughness of concrete. It enhances the concrete's tensile strength, impact resistance, and durability, making it ideal for precast elements, industrial floors, tunnels, pavements, and shotcrete applications.
Q: What's the difference between twisted fiber and straight fiber?
A: Twisted polypropylene fiber has a spiral structure that provides better bonding with concrete, increasing crack resistance and dispersion uniformity. Straight fiber, on the other hand, is more suitable for surface finishing or thin-layer mortar applications.
Q: How much polypropylene twisted fiber should be added to concrete?
A: The recommended dosage is typically 0.9–1.5 kg per cubic meter of concrete, depending on the required strength and application. Always mix the fiber evenly into the concrete to achieve optimal performance.
Q: Can polypropylene twisted fiber replace steel reinforcement?
A: Polypropylene fiber cannot replace structural reinforcement like steel rebar, but it can significantly reduce plastic shrinkage cracks and improve durability. It's best used as a secondary reinforcement.
Q: Is polypropylene twisted fiber resistant to corrosion and alkali?
A: Yes. Polypropylene fiber is chemically stable, non-rusting, and highly resistant to acid, alkali, and moisture. It ensures long-term durability even in harsh environments.
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