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Micro-Synthetic Fiber, Monofilament

PSI FIBERSTRAND 150 is a 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 0.67 lb/yd³ to 1.0 lb/yd³ (0.4 - 0.6 kg/m³), PSI FIBERSTRAND 150 micro-fibers have been shown to greatly reduce plastic shrinkage cracking when compared to plain concrete. PSI FIBERSTRAND 150 micro-fibers also comply with applicable portions of the International Code Council (ICC) Acceptance Criteria AC32 for synthetic fibers.

Features & Benefits

  • Controls and mitigates plastic shrinkage cracking
  • Reduces segregation, plastic settlement 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


  • Slabs on grade, sidewalks, driveways, curb work, overlays and toppings
  • Footings, foundations, walls and tank applications
  • Stucco applications, pre-cast concrete and pre-stressed beams
  • Shotcrete, slope paving and composite steel deck construction

Specifications / Compliances

  • ASTM C1116
  • ASTM D7508


PSI FIBERSTRAND 150 micro-fibers are packaged in 0.67 lb (0.3 kg), 1.0 lb (0.45 kg), 1.3 lb (0.59 kg) and 5.0 lb (2.27 kg) water soluble bags. Additional and special packaging configurations, including bulk, are also available upon request.