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    MasterRoc MF 308

    High-performance admixture for improved homogeneity, pumpability and placeability

    How does MasterRoc MF 308 work?

    MasterRoc MF 308 admixture is an aqueous solution of a high-molecular weight synthetic copolymer formulated to improve the rheological behavior and in-situ properties of placed backfill. MasterRoc MF 308 admixture offers superior stability by increasing resistance to segregation, while acting as a pumping aid and facilitating placement with significant improvement in the homogeneity of the placed fill.

    Recommended uses:

    • All types of hydraulic, low density paste fills and cemented aggregate fills
    • Paste/hydraulic fills with lower solids content and/ or poor gradation
    • Segregation-prone fills like cemented hydraulic and aggregate fills

    What are the unique features of MasterRoc MF 308?

    • Improves rheological behavior in low- to high-density slurries as well as in cemented aggregate fills
    • Improves cohesion and captivation of fines and binder inside the fill mass
    • Lubricates the fill
    • Acts as a pumping aid
    • Improves flow characteristics
    • Enhances robustness of the fill

    What are the benefits of MasterRoc MF 308?

    • Enhances pumping and self-leveling of the fill
    • Reduces segregation
    • Facilitates production of highly fluid paste and more coherent and homogenous cemented aggregate fills
    • Provides stability during transportation and placement
    • Improves plastic behavior and lowers porosity of the fill
    • Increases compressive strengths
    • Reduces slime in the slump
    • Reduces water addition requirements
    • Improves reliability of fill delivery and increased production
    • Permits mix optimization and/or cost savings due to binder reduction (cement/slag cement/fly ash)
    • Makes mixes less sensitive to solid content variation and/or water demand
    • Improves mechanical properties of self-leveling fluid, making in-situ properties more consistent
    • Improves flow characteristics resulting in less wear and tear on pumps and pipes, thus extending equipment service life
    • Does not affect setting times within the recommended dosage rate​

    Direct contact

    Master Builders Solutions Technical Support

    Admixture Systems

    1-800-628-9990

    Product Certifications

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

    Related Literature

    MasterRoc MF 308 Data Sheet

    pdf (218.04 Kb)

    MasterRoc MF 308 SDS

    pdf (292.09 Kb)

    MasterRoc MF 308 SDS

    pdf (179.83 Kb)

    MasterRoc MF 308 SDS

    pdf (268.01 Kb)