Advantages
RHEOBUILD® 561M significantly improves the characteristics of both fresh and hardened concrete.

Applications

• Microsilica concrete
• Unreinforced concrete pouring
• Ready-mix concrete
• Long-distance transport
• Pumped concrete
• Casting in hot climates

Benefits Include:

• Reduced thermal peaks
• High workability for extended periods
• Lower pumping pressure
• Delayed setting with extended workability
• Increased ultimate strengths
• Reduced permeability
• Improved durability

Compatibility
RHEOBUILD® 561M is compatible with all types of cement and most air-entraining agents meeting ASTM standards. The use of RHEOBUILD® 561M in combination with MICRO-AIR 100 (air-entraining agent) is recommended for concrete exposed to freeze-thaw conditions.

Packaging
RHEOBUILD® 561M is available in bulk or in 210-liter drums.

Standards

• ASTM C-494 Type B, D, and G
• BS 5075 Parts 1 and 3

Dosage
RHEOBUILD® 561M is typically used at a dosage of 0.8 to 1.2 liters per 100 kg of cement. Higher dosages may be required depending on working conditions and specific mix design. In particular, higher dosages may be needed to maintain longer workability, especially in hot climates.

Application Instructions
RHEOBUILD® 561M is a ready-to-use liquid that should be added to the mixer along with the mixing water. The plasticizing and water-reducing effects are maximized when the admixture is introduced after 50 to 70% of the mixing water has been added. It is not recommended to add to dry aggregates or cement. Automatic dispensers are available for use.