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Plastiretard

Set-retarding admixture

Plastiretard is a set-retarding admixture that can be used with any type of concrete, screeds and mortars. When used in certain proportions, it behaves like a water-reducing admixture.

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.
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Product Data Sheet Show all documents

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

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Complies with EN 934.2 tab. 8

 
Product Information

Shelf life

36 months in original unopened packaging

Storage conditions

Store in a dry area in original packaging at temperatures between 5°C and 35°C. Protect from direct sunlight and frost.

Density

1.18 ± 0.03

pH-Value

10 ± 1

Total chloride ion content

< 0.1 %

Equivalent sodium oxide

< 6.0 %

Application

Application Information

Dispensing

Plastiretard is added in the gauging water or simultaneously poured with it in the concrete mixer.
Consumption

Recommended dosage

From 0.2 to 0.5% by weight of cement, depending on the required effect.

  • Between 0.15 and 0.25%: Plasticizing effect only
  • The dosage of 0.5% may be exceeded when setting has to be slowed for a long time.

Tests must be made with various contents under site conditions (especially the temperature) so as to determine the content needed to obtain the required result.

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