MasterRheobuild 859 - A high range, water-reducing superplasticiser for concretes containing GGBS and microsilica
MasterRheobuild 859 is formulated from synthetic polymers specially designed to impart rheoplastic qualities to concrete, particularly those containing GGBS and microsilica.
A rheoplastic concrete is a fluid concrete with a slump of at least 200mm, easily flowing, but at the same time free from segregation and having the same w/c ratio as that of a low slump concrete (25mm) without admixture.
MasterRheobuild 859 is chloride-free.
Where is MasterRheobuild 859 applied?
- Mixes containing GGBS or microsilica
- Mass concrete pours
- Ready-mixed concrete
- Pumped concrete
- Casting in hot climates
What are the advantages of MasterRheobuild 859?
- High workability for longer periods
- Lower pumping pressure
- Delayed setting with longer workability
- Higher ultimate strengths
- Reduced permeability
- Improved durability