MasterRheobuild 561 – A superplasticising admixture to produce low slump loss rheoplastic concrete
What is MasterRheobuild 561?
MasterRheobuild 561 is a chloride free, ready-to-use, liquid admixture comprising of synthetic polymers specially designed to impart low slump rheoplastic qualities to concrete. Rheoplastic concrete is a fluid concrete with a slump value of at least 200mm, easily flowing but at the same time free from segregation and having the same water/cement ratio as that of a no-slump concrete without additive.
MasterRheobuild 561 has been formulated to meet the requirements of ASTM C494 Type B, D and G, BS5075 Part 3 and UNI no. 7102, 7104 -72 and 8145 for high range water-reducing admixtures. It is compatible with all cements meeting recognised international standards.
Where does MasterRheobuild 561 work?
- Mass concrete
- Ready mixed concrete
- long distance transport
- pumped concrete
- hot weather concreting
- use with all cements and air-entraining admixtures approved under ASTM, AASHTO, CRD & BSI.
It has been used for:
- foundation rafts of nuclear power stations, turbo-generators, rolling mills, shipyards and high rise buildings
- transporting of concrete lasting more than one hour casting structures where concrete is pumped over a distance of more than 200metres or to a considerable height
- reinforced concrete and prestressed concrete structures in regions where temperatures normally exceed 40°C and relative humidity is low