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    MasterFiber F 70

    Fibrillated synthetic microfiber

    How does MasterFiber F 70 work?

    MasterFiber F 70 product, a synthetic microfiber, is a fibrillated polypropylene fiber manufactured from 100% virgin homopolymer polypropylene resins. MasterFiber F 70 product provides shrinkage and temperature (secondary) reinforcement in concrete applications.

    Recommended uses:

    • Residential and commercial slabs-on ground
    • Ultra-thin whitetopping
    • Bonded overlays
    • Architectural precast products and ornamental elements
    • Slope stabilization
    • Water treatment plants
    • Irrigation ditches/channels

    What are the unique features of MasterFiber F 70?

    • Excellent distribution throughout concrete
    • Excellent shrinkage and temperature reinforcement
    • Meets the requirements of ASTM C 1116/C 1116M, Section 4.1.3, Type III, and Note 2
    • Meets the requirements of ICC ES AC32 Sections 3.1.1 (plastic shrinkage reinforcement) and 3.1.2 (shrinkage and temperature reinforcement)

    How does MasterFiber F 70 benefit contractors?

    • Replacement for typical light gauge welded-wire reinforcement [(6 x 6 W1.4 x W1.4) (152 x 152 MW9.1 x MW9.1)], depending on the application
    • Modifies macro-cracking and micro-cracking mechanisms
    • Reduces plastic settlement
    • Extends service life with reduced maintenance
    • Enhances fatigue strength
    • Enhances impact, pullout and surface abrasion resistance
    • Reduces permeability​

    Safety Data Sheet (SDS)

    Find all available safety data sheets for this product.

    Product Certifications

    Generate a free certificate of conformance for a specific Master Builders Solutions construction product.

    Related Literature

    Eaton Center Project Spotlight

    pdf (776.91 Kb)

    MasterFiber F 70 Data Sheet

    pdf (214.52 Kb)

    MasterFiber F70 SDS

    pdf (201.76 Kb)

    MasterFiber F70 SDS

    pdf (143.82 Kb)