Sika Abyssinia Concrete Concrete Admixtures Set retarding Admixture Plastiretard

Owing to its physicochemical action, Plastiretard has the following 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.

• Usage

  Concreting during hot weather The set-retarding effect of Plastiretard 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 Plastiretard 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 Plastiretard allows trouble-free transportation of any concrete over long distances in any conditions (temperatures, risk of traffic jam). Improvement of the workability Plastiretard 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

  Owing to its physicochemical action, Plastiretard has the following 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.

  Packaging

  • 200 lit drum
  • 1,000 litres IBC

  Colour

  Light brown