MasterRheobuild 870 - A high range, water-reducing superplasticiser for rheoplastic concretes

Formerly Rheobuild 870


MasterRheobuild 870 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 870 is chloride-free.

Where is MasterRheobuild 870 applied?

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

What are the advantages 870?

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

Product Information

Technical Data Sheet


MasterRheobuild 870 MSDS

pdf (164,47 Kb)

MasterRheobuild 870 TDS

pdf (179,78 Kb)