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Polypropylene Synthetic Microfiber

TenaBrix® Polypropylene synthetic microfiber is a high-strength fiber made of 100% virgin polypropylene as the raw material. The fibers are extremely fine, single filaments, specifically designed to help mitigate the formation of plastic shrinkage cracking in concrete. TenaBrix® polypropylene synthetic microfiber also known as polypropylene monofilament (mono) fiber, PP fiber, anti-cracking fiber, and concrete reinforcement fiber. 

Specifications and characteristics

Fiber Type     Monofilament micro fiber
Material 100% Virgin Polypropylene
Color  White
Tensile Strength  ≥450MPa
Elastic Modulus  ≥4500 MPa
Elongation  20 – 25%
Specific Gravity  0.91/ cm3
Alkali, Salt, and Acid ResistanceHigh
Melting Point  160 °C
Length  6mm,12mm,18mm,19mm 
Water Absorption None
Electrical Conductivity Low
Typical Dosage  0.9 kg/m3


  • Shotcrete
  • Precast Concrete
  • Slabs on grade
  • Driveways and sidewalks
  • Water Retaining Structures
  • Renders and plasters
  • Pool decks and Stucco



600 or 900 gr in plastic bags.

Water soluble bags and custom bag sizes are available.

Specifications / Compliances

ASTM C1116
ASTM D7508
EN 14889-2