PSI Fiberstrand Multi-Mix 80

PSI FIBERSTRAND MULTI-MIX 80 is a fine denier monofilament polypropylene micro-fiber for concrete reinforcement that complies with ASTM C 1116, Standard Specification for Fiber Reinforced Concrete and Shotcrete, and is specifically designed to help mitigate the formation of plastic shrinkage cracking in concrete. Typically used at a dosage rate of 0.5 lb/yd³ (0.3 kg/m³), PSI FIBERSTRAND Multi-Mix 80 micro-fibers will greatly reduce plastic shrinkage cracking when compared to plain concrete. PSI FIBERSTRAND Multi-Mix 80 micro-fibers also comply with applicable portions of the International Code Council (ICC) Acceptance Criteria AC32 for synthetic fibers.


  • Controls and mitigates plastic shrinkage cracking
  • Reduces segregation and bleed-water
  • Provides three-dimensional reinforcement against micro-cracking
  • Increases surface durability, impact and abrasion resistance
  • Reduction of in-place cost versus wire mesh for non-structural temperature / shrinkage crack control
  • Easily added to concrete mixture at any time prior to placement


  • Flatwork for industrial, commercial and residential concrete projects
  • Footings, foundations, walls and tank applications
  • Stucco, concrete pipe, vault structures and pre-cast / pre-stressed beams
  • Shotcrete


  • ASTM C1116
  • ASTM D7508


PSI FIBERSTRAND Multi-Mix 80 micro-fibers are packaged in 0.5 lb (0.23 kg), 1.0 lb (0.45 kg) and 1.5 lb (0.68 kg) water soluble bags. Special packaging configurations are also available upon request.

For pricing
and availabilty,

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