MasterSet R 961 set retarding admixture

Formerly: Pozzolith 961 R

 

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

US / Canada Product Information

Data Sheet

 

Safety Data Sheet (SDS)

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