Product Data Sheet Show all documents
Sika Retarder® N

Sika Retarder® N

Set Retarder

Sika Retarder® N is used to retard the setting time of the concrete to allow concreting under conditions of high ambient temperatures and placing of mass concrete. It is designed to be used for pumped, prestressed and structural concrete.

  • Minimises the risk of cold joints.
  • After the initial retardation, the rate of hardening proceeds at a rate equivalent to, or greater than, unretarded normal concrete.
  • Delivery of concrete can be made over long distances from the premix concrete plant.
Product Data Sheet Show all documents

Usage

  • Increases the setting time of concrete
  • Used in high temperatures
  • Excellent for large concrete pours
 

Advantages

  • Minimises the risk of cold joints.
  • After the initial retardation, the rate of hardening proceeds at a rate equivalent to, or greater than, unretarded normal concrete.
  • Delivery of concrete can be made over long distances from the premix concrete plant.

Packaging

Bulk deliveries

1000 litre IBC

200 litre drum

20 litre container

Colour

Yellow liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Sika Retarder® N meets and exceeds all requirements of Australian Standard 1478.1-2000 for Set-Retarding Admixture (Re)
Product Information

Chemical Base

Aqueous solution of selected carbohydrates

Shelf Life

Twelve (12) months when stored in original unopened containers, protected from direct sunlight and frost at temperatures between 5°C and 35°C.

Storage Conditions

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

Specific gravity

1.05 gr/cm3 approx.
System information

Compatibility

Sika Retarder® N is compatible with all the types of Portland cement .

When using with other admixtures, check their compatibility first.

 
Technical Information

Concreting Guidance

Concrete should be placed according to good concrete practice and proper curing procedures should take place

Specific Advice

May slightly increase air content when used with water reducers.

Application

Consumption

Recommended Dosage

The effect of Sika Retarder® N depends on a number of factors such as cement type, ambient temperature and mix design. The optimum dosage should be determined by site or laboratory tests with the particular concrete mix design.

The rate of addition is generally in the range of: 200ml ± 100ml per 100kg of cementitious materials.

Note: For dose rates higher than 400 ml/100kg please refer to your Sika representative.

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