MasterRheobuild 840 - A high range, water-reducing superplasticiser for rheoplastic concretes
Formerly Rheobuild 840
MasterRheobuild 840 is formulated from synthetic polymers specially designed to impart rheoplastic qualities to concrete. A rheoplastic concrete is a fluid concrete, easily flowing; but at the same time free from segregation and bleeding having the same w/c ratio as that of a low slump concrete without admixture, with a slight set retarding effect for producing free-flowing concrete in hot climates. Also, it provides a substantial water reduction effect for promoting high, early and ultimate strengths. MasterRheobuild 840 is chloride-free.
Where is MasterRheobuild 840 applied?
- Microsilica concrete
- Mass concrete pours
- Ready-mixed concrete
- Long-distance transport
- Pumped concrete
- Casting in hot climates
What are the advantages of MasterRheobuild 840?
- Reduced thermal peaks
- High workability for longer periods
- Lower pumping pressure
- Delayed setting with longer workability
- Higher ultimate strengths
- Reduced permeability
- Improved durability