( ADMIXTURE )
To produce pumpable concrete
To produce high strength, high grade concrete by substantial reduction
in water resulting in low permeability and high early strength.
To produce high workability concrete requiring little or no vibration
Improved workability - Easier, quicker placing and compaction.
Increased strength - Provides high early strength for precast concrete
with the advantage of higher water reduction ability.
Improved quality - Denser, close textured concrete with reduced
porosity and hence more durable.
Higher cohesion - Risk of segregation and bleeding minimised; thus
aids pumping of concrete
Chloride free - Safe in prestressed concrete and with sulphate resisting
cements and marine aggregates.
1.220 to 1.225 at 300C
Approx. 1% additional air is entrained