MasterSet

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