Polyacrylonitrile Fiber: Superior Reinforcement for Asphalt and Concrete

Fibra de poliacrilonitrilo is a synthetic fiber known for its high tensile strength and thermal stability. When added to asphalt concrete, it enhances high-temperature stability, fatigue durability, and adhesion, effectively preventing low-temperature cracking and reflection cracks.

PAN fiber reinforcement elevates the pavement performance indicators of asphalt concrete, including high-temperature stability. The addition of PAN fibers improves the high-temperature stability of asphalt binder, enhancing the overall performance of the mixture.

The optimal fiber length, volume ratio, diameter, and modulus should be determined based on specific project requirements. Finite element simulations and experimental studies can help confirm the best fiber parameters to improve the mechanical properties of asphalt concrete.

Incorporating PAN fiber into asphalt mixtures can influence workability. It’s essential to conduct preliminary tests to adjust the mix design accordingly and ensure proper mixing techniques are employed to achieve uniform fiber distribution.

Yes, combining PAN fiber with other fibers, such as basalt fiber, has been studied to enhance the performance characteristics of asphalt concrete. Mixed introduction of basalt and polyacrylonitrile fibers reduces the speed of rutting on road asphalt concrete surfaces, improving physical and mechanical indices.