Sika Abyssinia Concrete Concrete Admixtures Set retarding Admixture SikaTard® ET

Usage

Concreting during hot weather The set-retarding effect of SikaTard® ET avoids a sudden rise in concrete temperature during setting and makes its use absolutely necessary

• When the temperature is high,
• In the case of great-mass concretes: dams, etc.

Concreting rework The long set retardation SikaTard® ET can cause makes it possible to rework concreting after it has been discontinued for several hours without any other precaution than a protection against drying. Long-duration concrete transport The use of SikaTard® ET allows trouble-free transportation of any concretes over long distances in any conditions (temperatures, risk of traffic jam) Improvement of the workability SikaTard® ET acting as a retarding plasticizer can be used for placing any types of concrete and more especially:

• When a greater workability is required
• For pumped concrete
• For as-stripped concrete (architectonic aspect)

Advantages

On fresh concrete

• It improves the workability even though the quantity of mixing water is reduced
• It shifts the beginning of the cement hydration; the setting times are delayed and the consistence of the concrete can be extended. It preserves the fluidity during the period of time required for placing concrete
• It delays and spreads the release of heat due to cement hydration.

On hardened concrete

• It improves the mechanical strengths
• It increases the compactness and watertightness
• It reduces the shrinkage and creeping

Improvement of mechanical strength:

• Water reduction from 10 to 15%.
• Sikatard® ET increases concrete mechanical strength for long- term from 20 to 30%.
• It also improves its compaction.

Packaging

• 1,000 L IBC
• 200 L drum
• 20 L pails

Colour

Light Brown