Rheobuild 561 

Rheobuild 561 is a superplasticising, high range, water reducing admixture formulated to produce low slump loss rheoplastic concrete.

Rheoplastic concrete is fluid concrete with a slump value of at least 200mm, easily flowing but at the same time free from segregation, and having the same high water reduction or flowing properties water/cement ratio as that of a no-slump concrete (25mm) without additive.  The slump-retention characteristics of rheoplastic concrete permit the addition of Rheobuild 561 admixture at the batch plant.

This ready-to-use chloride free liquid admixture meets ASTM C 494 requirements for Type G admixtures, AS 1478 type WRRe.

Rheobuild 561 is recommended for:

• all types of premix concrete where are required
• mass concrete pours
• long distance transport
• pumped concrete
• concrete in hot climates

Rheobuild 561 has been used successfully in:

• foundation slabs of thermal and nuclear power plants, turbo-generators, rolling mills, dry docks
• central batch plants for concrete to be transported for more than 1 hour
• concrete to be pumped over a distance of more than 200 metres or to a considerable height
• reinforced concrete and prestressed concrete structures in countries where temperature normall exceeds 40ºC and relative humidity is low