POLYHEED® 789
POLYHEED 789 is a liquid, ready-to-use, mid range water-reducing admixture that maintains workability performance in high temperature
environments. POLYHEED 789 meets ASTM C-494 Type B & D, AASHTO M 194 and CRD C-87 specification requirements.
Features
- Reduces segregation in high to medium slump concrete.
- 12 to 20% water reduction and excellent performance in a high range of slumps, particularly 10 to 20 cm (4 to 8 inches).
- Improved workability characteristics, pumping and finishing of concrete mixes with low amounts of cements.
- Setting characteristics slightly retarded within recommended dosages.
Benefits
- Better performance with a large variety of cement types, fl y ash, granulated slag and aggregates, including crushed coarse sand and aggregates.
- Increased freeze-thaw resistance.
- Increased compressive and fl exural strength during its working time.
Applications
- Whenever concrete needs extension of setting time and workability.
- When slump requirements for concrete are of mid range 6 to 8 in
- (15 to 20 cm).
- Concrete mixes using a wide variety of portland cements or cement additives.
- Roll compacted concretes for construction of dams and pavements.
- Mixes of soil cements with extended initial setting time.