MasterRheobuild 857K - High range water reducing superplasticiser
What is MasterRheobuild 857K?
MasterRheobuild 857K is formulated from
synthetic polymers specially designed to impart
rheoplastic qualities to concrete.
A rheoplastic concrete is a fluid concrete with a
slump of at least 200 mm, easily flowing, but at
the same time free from segregation and having
the same water/cement ratio as that of a low
slump concrete (25mm) without admixture.
MasterRheobuild 857K is chloride free.
What is MasterRheobuild 857K used for?
MasterRheobuild 857K considerably improves
the properties of fresh and hardened concrete.
What are the benefits of MasterRheobuild 857K?
Mixes containing GGBS or microsilica
• Mass concrete pours
• Ready mixed concrete
• Pumped concrete
• Casting in hot climates
To obtain:
• High workability for longer periods
• Lower pumping pressure
• Delayed setting with longer workability
• Higher ultimate strengths
• Reduced permeability
• Improved durability