Please login with your username and password.


Can’t remember your accounts password?

Can't access your account?

Please select your language

This page is available in the following languages:

    Please select your location

    SikaPlast® PH 8121 (formerly known as MasterPolyheed® 8121) - High range water reducing and retarding admixture

    How does MasterPolyheed 8121 work?

    MasterPolyheed 8121 is a chloride free, high range water reducing and retarding admixture formulated to produce low slump loss rheoplastic concrete.
    Rheoplastic concrete is fluid, workable, or easily flowing concrete but at the same time free from segregation.


    What are the unique features of MasterPolyheed 8121?

    The slump retention characteristics of rheoplastic concrete allow the addition of MasterPolyheed 8121 at the batching plant. MasterPolyheed 8121 meets ASTM C-494 requirements for Type G admixture and AS 1478 requirements for type HRWR.

    What are the benefits of MasterPolyheed 8121?

    • high reliability
    • good workability and surface finish
    • impermeability
    • durability
    • dimensional stability
    • high elastic modulus
    • low shrinkage and creep


    MasterPolyheed 8121: Technical Data Sheet

    pdf (145.08 Kb)