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    Synthetic Fibers for Concrete Reinforcement

    Macrofiber concrete reinforcement is achieved by adding macrofibers with superior bonding properties to the concrete matrix. The result is crack control and an extended service life of the concrete. Synthetic macrofibers are manufactured from a proprietary blend of polypropylene resins, in compliance with ASTM C 1116/C 1116M. They are specifically engineered for use as shrinkage and temperature (secondary) reinforcement and provide excellent plastic shrinkage control and reduced settlement cracking.
    • Improves green strength
    • Uniform distribution throughout the concrete mixture
    • Excellent finishability and post-first performance

    Macrofiber Products

    MasterFiber MAC 360 FF

    Finishability | Blend of micro/macro | Permits earlier stripping of forms, with less rejection

    MasterFiber MAC Matrix

    Stick-like | Provides excellent control of settlement cracking | Eliminates the need for welded-wire reinforcement (WWR) and small diameter bars used as secondary reinforcement, depending on the application

    MasterFiber MAC 100

    Tape | Tensile strength of 60.000 psi (415 Mpa) | Increases flexural toughness, impact and shatter resistance

    MasterFiber MAC 100 Plus

    Tape | Canada | Tensile strength of 75,000 psi (515 MPa)

    MasterFiber MAC 2200 CB

    Chemically Bonding | Stick-like | Improves placement and finishing characteristics compared to traditional synthetic macrofibers

    Direct contact

    Master Builders Solutions Technical Support

    Admixture Systems


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