MasterSet R 961

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