Product Data Sheet Safety Data Sheet Show all documents

SikaRapid®-4

Ac - Set Accelerator

SikaRapid®-4 is a set accelerator for concrete and mortar containing added chloride.

  • Can be used as an accelerator or in combination with a superplasticiser.
  • Faster demoulding.
  • Higher productivity.
Product Data Sheet Safety Data Sheet Show all documents

Usage

SikaRapid®-4 is recommended for use in premix and precast concrete where accelerated setting times are required.  As a result, SikaRapid®-4 allows:
  • Faster finishing of concrete surfaces.
  • Improved early strength of premixed concrete.
  • Rapid slip-form movement.
 

Advantages

  • Can be used as an accelerator or in combination with a superplasticiser.
  • Faster demoulding.
  • Higher productivity.

Packaging

Bulk deliveries

1000 litre IBC

205 litre drum

10 litre container

Colour

Light brown liquid.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

SikaRapid®-4 meets and exceeds all requirements of Australian Standard 1478.1-2000 for Accelerator (Ac).
Product Information

Shelf life

Stored at temperatures between 5°C and 35°C in unopened original containers protected from direct sunlight, shelf life is at least one (1) year.

Storage conditions

Store at temperature between 5°C and 35°C, protected from direct sunlight.

Specific gravity

 

1.44 g/cm3

Total chloride ion content

1000ml contains approximately 86g Chloride ions.

Application

Application Information

Dispensing

SikaRapid®-4 is added to batching water or is poured into the concrete mix at the same time as the gauging water.  SikaRapid®-4 may also be added into the premix truck on site.  In this case, the concrete should then be mixed for an extra 1 minute for every cubic metre of concrete.  The concrete should then be checked visually for uniform consistency before discharging.

Compatibility

SikaRapid®-4 can be used in conjunction with any non-retarded Sika plasticiser or superplasticiser.  It is beneficial to add the SikaRapid®-4 with the initial mixing water before the addition of superplasticiser to enhance strength development.  Tests must be carried out to determine the optimum combination.

Do not use SikaRapid®-4 in conjunction with shrinkage compensating admixtures.
Consumption

Recommended dosage

Dosage is 400ml - 2000ml/100 kg of total cementitious material.  Exact dosage rate should be determined by site trials.

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