Polyacrylonitrile Fiber for Concrete

Product introduction

Polyacrylonitrile fibers can significantly improve the tensile strength, fatigue strength, and flexural tensile strength of concrete, while polyacrylonitrile fibers can significantly improve the early crack resistance performance of concrete. Polyacrylonitrile fibers can significantly improve adhesion, high-temperature stability, and fatigue durability in asphalt. Moreover, polyacrylonitrile fibers can effectively prevent the occurrence of low-temperature cracking and reflection cracks, effectively improving tensile, shear, compressive, and impact strength.

Polyacrylonitrile fibers are widely distributed in mortar, cement concrete, and asphalt concrete due to their excellent dispersibility and three-dimensional random distribution. They have outstanding tensile strength, melting and ignition points, and high comprehensive performance.

Technical specifications

Executive standard TB/T2965-2018 Railway bridge concrete deck waterproof layer

Texture of material	Polyacrylonitrile	Security	Non-toxic
Fiber diameter	10-15μm	Elastic modulus	≥7.0Gpa
Density	1.18kg/m³	Elongation at break	≥20%
Length	6-12mm	Acid and alkaline resistance	Retention rate of 99%
Tensile strength	≥500Mpa	Dispersibility	Uniformly dispersed without merging or clumping
Melting point	240℃	Water absorption	Not absorbing water

Application area

1. Cement mortar / concrete works: Incorporated into plaster mortars and concrete to control drying shrinkage cracks and improve crack resistance and durability.
2. Asphalt pavement engineering: Used in asphalt concrete layers to enhance rutting resistance, fatigue performance, and low-temperature crack resistance.
3. Specialty building materials: Manufactured into fireproof boards and insulation materials to improve strength, fire resistance, and aging durability.

Construction suggestions

Recommended Dosage in Concrete:
• Ordinary concrete (C30–C40): 0.6–0.9 kg/m³, meeting basic crack control and impermeability requirements.
• Plaster / masonry mortar: 0.9–1.2 kg/m³, controlling drying shrinkage cracks and improving adhesion.
• ECC cement-based composites: 1.8–2.2 kg/m³, enhancing flexural toughness and crack resistance.
• UHPC (ultra-high performance concrete): 2.0–2.5 kg/m³, suitable for ultra-high strength and high-durability applications.
Recommended Dosage in Asphalt Concrete:
• Ordinary highway asphalt pavement: 3.6–4.8 kg/m³ (equivalent to 1.5–2 kg/ton of mixture), suitable for low to medium traffic volumes.
• High-grade highway asphalt pavement: 4.8–7.2 kg/m³ (equivalent to 2–3 kg/ton of mixture), suitable for high-traffic areas requiring rutting resistance.
• Bridge deck wearing course: 8.16–8.4 kg/m³ (equivalent to 3.4–3.5 kg/ton of mixture), suitable for high crack resistance and wear-resistant applications.