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    ​​MasterSet R 961 

    Set retarding admixture

    How does MasterSet R 961 work?

    MasterSet R 961 ready-to-use liquid admixture is used for making more uniform and predictable high-performance concrete while retarding its setting time to facilitate placing and finishing operations.

    Recommended uses:

    • Prestressed concrete
    • Precast concrete
    • Reinforced concrete
    • Shotcrete
    • Lightweight concrete
    • Pumped concrete
    • 4x4 Concrete
    • Pervious concrete
    • Self-consolidating concrete (SCC)

    What are the unique features of MasterSet R 961?

    • Reduced water content required for a given workability
    • Retarded setting characteristics
    • Improved workability
    • Reduced segregation
    • Superior finishing characteristics for flatwork and cast surfaces
    • Increased compressive and flexural strength
    • Full-form deflection can take place (before concrete sets) in extended pours for bridge decks, cantilevers, non-shored structural elements, etc.
    • Meets ASTM C 494/C 494M requirements for Type B, retarding, and Type D, water-reducing and retarding, admixtures

    What are the benefits of MasterSet R 961?

    • Flexibility in scheduling of placing and finishing operations
    • Minimizes premature concrete hardening during extended delays between mixing and placing
    • Helps eliminate cold joints
    • Peak temperature and/or rate of temperature rise in mass concrete lowered thereby reducing thermal cracking

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    Master Builders Solutions Technical Support

    Admixture Systems


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    Related Literature

    MasterSet R 961 Data Sheet

    pdf (227.33 Kb)

    MasterSet R 961 SDS

    pdf (289.60 Kb)

    MasterSet R 961 SDS

    pdf (201.67 Kb)

    MasterSet R 961 SDS

    pdf (144.66 Kb)

    MasterSet R 961 SDS

    pdf (399.29 Kb)