Sikament® RB 850 PK (formerly MasterRheobuild® 850PK)

• Microsilica concrete
• Mass concrete pours
• Ready-mixed concrete
• Long-distance transport
• Pumped concrete
• Casting in hot climates

Product Information: Sikament® RB 850 PK delivers:

• Reduced thermal peaks
• High workability for extended periods
• Lower pumping pressure
• Delayed setting with prolonged workability
• Higher ultimate strengths
• Reduced permeability
• Enhanced durability

Characteristics/Advantages: Sikament® RB 850 PK significantly improves both the fresh and hardened properties of concrete.

Approvals/Standards:

• EN 934-2 Tables 3.1, 3.2, 11.1, and 11.2
• ASTM C-494 Types A, B, D, F, and G

Packaging: Available in bulk or 250 kg drums.

Shelf Life & Storage Conditions: Minimum 12 months from the production date. Store Sikament® RB 850 PK at temperatures above +5°C. If the product freezes, thaw and mix until fully reconstituted. Keep under cover, out of direct sunlight, and protected from extreme temperatures. Failure to comply with these conditions may result in product or packaging deterioration.

Appearance/Colour: Brownish liquid

Specific Gravity: 1.190 – 1.250 at 25°C

pH-Value: 6.0 – 9.0

Total Chloride Ion Content: Chloride-free to EN 934-2 standards

Application Information:

Recommended Dosage: The optimal dosage should be determined through trial mixes. Recommended starting dosages are:

• 0.8-2.0 liters per 100 kg of total cementitious material for normal concrete
• 1.5-3.0 liters per 100 kg of total cementitious material for high-performance microsilica concrete

Higher dosages of Sikament® RB 850 PK can be used without adverse effects, depending on mix requirements.