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    Sikament® RB 623 (formerly known as MasterRheobuild® 623) - Retarding Superplasticising admixture for concrete

    How does MasterRheobuild 623 work?

    MasterRheobuild 623 is composed of synthetic polymers specially designed to impart rheoplastic qualities to concrete.

    Recommended uses:

    • Ready mixed concrete
    • Long hauls
    • Pumped concrete
    • Concrete containing Granulated Slag/Pozzolans
    • Mass concrete pours
    • Hot weather concreting

    What makes MasterRheobuild 623 a unique solution?

    MasterRheobuild 623 helps to produce high strength concrete with optimum cement and water content, mainly for precast concrete. It also improves properties of concrete in plastic state to improve ease of placement.

    What are the features and benefits of MasterRheobuild 623?

    • Reduced thermal peaks
    • High workability for longer periods
    • Lower pumping pressure
    • Resistance to segregation even at high workability
    • Extended setting with longer workability
    • Reduced water content for a given workability
    • Higher ultimate strengths
    • Reduced permeability
    • Improved durability
    • Reduced shrinkage and creep
    • Increased ease in finishing concrete
    • Provides lower in-place cost​

    MasterRheobuild 1100

    Specially designed to impart rheoplastic qualities to concrete

    MasterRheobuild 623

    Designed to impart rheoplastic qualities to concrete


    MasterRheobuild 623 Technical Datasheet

    pdf (172.91 Kb)