FiberForce 650

FiberForce 650TM (Tuf-Max DOTTM ) is a macrosynthetic fiber developed from a specific blend of polypropylene and polyethylene resins. FiberForce 650 was developed for use as temperature-shrinkage reinforcement and post-first crack toughness and will also provide plastic shrinkage reinforcement in concrete.

FiberForce 650 has been accepted by several State DOTs, Florida DOH, specifications, and code applications.


  • Commercial, Industrial, and Warehouse Slabs-on-Ground
  • Slabs-on-Ground and Roadway and Highway Pavements
  • Shotcrete
  • Bridge Decks
  • Septic Tnanks
  • Burial Vaults
  • Utility Vaults

Recommendations for Use

Recommended dosage rate is typically, but not limited to, 3 – 11 lbs. per cubic yard. 

However, specific dosage rate should be established by the project engineer or government agency for a given application based on project conditions and requirements.

Mixing Instructions

FiberForce 650 is packaged in water-soluble bags that can be added directly into the concrete mix.

To ensure optimum distribution, the fibers must be introduced to the ready-mix drum during or after the concrete is batched and loaded into the truck.

A minimum of 75-100 revolutions at mixing speed or 5-7 minutes of mixing at high speed may be needed to ensure complete dispersion of the fibers.

For detailed mixing instructions, please contact your Regional FiberForce Expert.

Physical Properties

  • MaterialPolyolefin
  • AbsorptionNil
  • Specific Gravity0.91
  • Alkali ResistanceExcellent
  • Melting Point320 °F (160 °C)
  • Electrical ConductivityLow
  • Aspect Ratio100
  • Equivalent Diameter0.015 in (0.38 mm)
  • Standard Length 1.5 in (38 mm)
  • Other Available Length2.0 in (50 mm)

Features & Benefits

  • Provides post- first crack residual strength to concrete
  • Provides temperature-shrinkage reinforcement
  • Increases concrete durability - including impact and abrasion resistance and fatigue strength
  • Reduces plastic shrinkage and settlement cracking
  • Measurably reduces permeability, thus increasing freeze-thaw durability
  • Provides uniformly distributed reinforcement throughout the concrete, not just in one plane as with traditional steel reinforcement
  • A cost-effective alternative to traditional steel reinforcement

Product Approvals & Compliance with Industry Standards

  • ASTM C1116 Section 4.1.3 and Note 2
  • ASTM D7508
  • ANSI/SDI C-2011 Designs – Shrinkage and temperature reinforcement alternative to welded wire reinforcing (WWR) for composite steel floor decks when used at a minimum dosage rate of 4 lbs. per cubic yard.
  • Listed by UL in CBXQ.R19202 (Fiber Reinforcement and Concrete Additives) for use as an alternative or in addition to the welded wire fabric used in Floor-Ceiling Designs Nos. D700, D800, and D900 Designs as Tuf-Max DOT.