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SikaRapid®-2 - Concrete Admixture

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Sika Limited

Set accelerating admixture for concrete.

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Application

SikaRapid®-2 is especially suitable for any application where fast early set and strength development plays a major role, or is of crucial importance within 6 to 24 hours. Typical applications include:

  • Precast concrete.
  • Prestressed concrete.
  • Making concrete in cold ambient temperatures.
  • Speeding up construction schedule.

Description

SikaRapid®-2 is a low alkali, chloride free liquid set accelerator for concrete and mortar which promotes early strength development without negatively influencing final strengths.


SikaRapid®-2 does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced and prestressed concrete structures.


Features and benefits:

  • When applied with a HRWR/Superplasticiser, SikaRapid®-2 will have minimal effect on the fresh concrete properties.
  • Faster turnaround of formwork in precast applications.
  • Reduced or eliminated heat or steam curing.
  • Continuous concreting at low temperatures.
  • No negative effects on the final strengths.

General information

Color

Clear

Yellow

Material

Liquid

Guidance for specification option:

Mixture of organic and inorganic complex agents.

Shape

Formless

Uniclass

Pr_20_31_03_76 Set-accelerating concrete admixturesPrimary

CAWS

E11/435 Proprietary admixture

E10/418 Proprietary admixture

Specification data - Set-accelerating concrete admixtures

General requirements

Admixtures generally.

Performance requirements

To BS EN 934-2, Table 6.

Composition

Mixture of organic and inorganic complex agents.

Capacity

25 L.

200 L.

1000 L.

Shelf life

12 months.

Appearance

Clear yellow liquid.

Density

1.37 kg/L.

Chloride Ion content

<0.1% w/w.

Guidance for specification option:

Chloride-free.

Dosage

0.5—3.0 %.

Guidance for specification option:

By weight of cement.

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