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PIONEER® Polyacrylonitrile Fibers: 13μm for Extreme Fineness

Updated: Nov 15

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       •      Type: 4-minute read

       •      Audience: Construction professionals, engineers, architects, contractors


Aerial view of large-scale water treatment facility constructed with high-performance concrete reinforced by PIONEER® PAN fibers

Introduction


PIONEER® polyacrylonitrile fibers stand out in the synthetic fiber market due to their extreme fineness at just 13 microns diameter. This fine microstructure enables superior dispersion and bonding in concrete mixes, enhancing crack control, toughness, and durability. Compared to conventional fibers like polypropylene, PIONEER® PAN fibers provide a cutting-edge solution for high-performance concrete structures requiring precise reinforcement and longevity.


Exceptional Fineness and Material Properties


The 13μm diameter of PIONEER® PAN fibers is significantly smaller than most synthetic fibers, allowing:

  • Better dispersion in concrete matrices, preventing clumping

  • Increased surface area for stronger bond with cement paste

  • Enhanced crack bridging at microcrack scale, reducing crack widths

  • Improved mechanical properties including tensile strength (500–900 MPa) and elastic modulus (7–10 GPa)

  • Stability under thermal and chemical exposure for demanding environments

This fine diameter contributes to the fiber’s ability to strengthen concrete without compromising workability or finish quality.


Applications Benefiting from Extreme Fiber Fineness


Thanks to their fine diameter and mechanical strength, PIONEER® PAN fibers are ideal for:

  • High-quality precast concrete elements requiring smooth surface finishes

  • Shotcrete for tunnels and mines, where crack control and energy absorption are critical

  • Industrial flooring subjected to thermal cycling and heavy impacts

  • Bridge decks and overlays needing enhanced flexural toughness

  • Asphalt mixtures requiring improved thermal and mechanical resistance

The fibers integrate seamlessly with automated batching and pumping systems, facilitating efficient construction workflows.


Construction workers pouring fiber-reinforced concrete with PIONEER® PAN fibers to improve toughness and reduce cracking

Sustainability and Standards Compliance


PIONEER® PAN fibers are produced from 100% virgin homopolymer polyacrylonitrile and meet stringent international standards including ASTM C1116 and EN 14889-2. Their durability, resistance to alkalis and acids, and thermal stability contribute to long-lasting concrete structures with reduced maintenance needs. This supports sustainable construction practices by lowering repair frequencies and extending service life.


Close-up of PIONEER® polyacrylonitrile fibers at 13 microns diameter, designed for superior dispersion and crack control in concrete

Conclusion: The Advantage of 13μm Polyacrylonitrile Fibers


The extreme fineness of PIONEER® polyacrylonitrile fibers at 13μm diameter is a game-changer in fiber-reinforced concrete technology. By improving dispersion, bonding, and crack control, these fibers help engineers achieve stronger, more durable, and longer-lasting concrete structures.


Explore PIONEER’s range of concrete reinforcement fibers and how they improve concrete properties. Visit our website: www.pioneerfibre.com

Micro fiber >> Learn More

Macro fiber >> Learn More

Steel fiber >> Learn More

Asphalt fiber >> Learn More

Contact us today to request samples, technical data, or a custom solution for your project.

WhatsApp: +1 (929) 569-9989 | +86 151-6240-5106

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