Self-Compacting Concrete Admixture

Overview

SCC must stay cohesive while flowing freely. This product combines a high-range backbone with a viscosity-modifying component to reach a state that flows readily but does not separate — filling formwork completely without vibration.

Key benefits

• Large, stable slump flow that passes through congested reinforcement
• Segregation and bleeding resistance; no sand streaks on the hardened surface
• Less vibration labour and noise, faster placement
• Freeze-thaw resistance can be raised further with an air entrainer

Application notes

Control aggregate grading and sand ratio — a sand ratio of 45–50% is recommended. Slump flow is sensitive to water content, so measure aggregate moisture carefully. Use together with a viscosity modifier or air entrainer as needed.

Typical uses

Congested reinforcement, concrete-filled steel tubes, thin-walled elements, strengthening layers, complex precast units.

Typical applications

• Self-compacting concrete
• Congested reinforcement
• Steel tube concrete
• Strengthening works

Technical specification

Appearance	Colourless to pale yellow liquid
Solid content	50% ± 1%
Water reduction	≥ 33%
Slump flow	≥ 650 mm
T500 time	2 – 5 s
Segregation ratio (sieve test)	≤ 10%
Air content	2.0% – 4.0%
Chloride content	≤ 0.01%

Specification values are typical reference figures; the COA of each batch governs. Custom solid content and formulation available on request.