Product Data Sheet Safety Data Sheet Show all documents

SikaControl®-40 (NZ)

SHRINKAGE REDUCING ADMIXTURE

SikaControl®-40 (NZ) is a shrinkage reducing admixture used to produce high performance concrete with greatly reduced drying shrinkage.

  • Reduced drying shrinkage
  • Reduction in the potential for drying shrinkage cracking
  • Reduces the potential for slab curling
  • Substantially reduces the occurrence of drying shrinkage cracks and therefore reduces permeability, resulting in improved concrete durability.
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • In premixed and precast concrete elements to reduce the drying shrinkage of the concrete
  • In thin bonded topping slabs, to minimize the difference in shrinkage between the new topping and the existing substrate
  • In concrete elements which are restrained against shrinkage
  • For durable concrete in marine environments
  • For watertight concrete in reservoirs, sewage treatment plants, dams.
 

Advantages

  • Reduced drying shrinkage
  • Reduction in the potential for drying shrinkage cracking
  • Reduces the potential for slab curling
  • Substantially reduces the occurrence of drying shrinkage cracks and therefore reduces permeability, resulting in improved concrete durability.

Packaging

20 litre drums, 200 litre drums and bulk delivery

Colour

Colourless liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

SikaControl®-40 (NZ) meets and exceeds all requirements of AS 1478.1-2000 as Special Purpose Admixture Type (SN).
Product Information

Chemical Base

Liquid hydroxy combinations

Shelf Life

Twelve (12) months from date of manufacture when stored as stated.

Storage Conditions

Store at temperatures between +5°C and +35°C in unopened original containers protected from direct sunlight and frost.

Specific gravity

~ 1.0 kg/litre

Total Chloride Ion Content

Nil
Technical Information

Concreting Guidance

Air Entrainment: Air entrainment must be checked and adjusted when using SikaControl®-40 (NZ) in combination with Sika air entraining admixtures. When SikaControl®-40 (NZ) is used in the production of air entrained concrete, a higher dosage of air entraining admixture may be required.

 

Effect on Setting

The use of SikaControl®-40 (NZ) will result in a delay in the setting time of concrete. At low ambient temperatures this effect will be increased. When combining SikaControl®-40 (NZ) with retarding admixtures their combined retardation effect and the delay in setting time has to be taken into account.

Application

Application Information

Dispensing

The required dosage of SikaControl®-40 (NZ) should be added to the concrete at the batching plant, with the gauging water or poured into the concrete simultaneously with the gauging water. It may also be added into the transit mixer at the point of discharge, but an additional mixing time of
5 minutes is required and the concrete should be visually checked for uniform consistency.
Consumption

Recommended Dosage

Dosage rates will vary according to materials used, ambient conditions and the requirements of a specific project. Sika recommends a dosage of 2 to 6 L/m³ of concrete, for general concrete applications. Dosage rates outside the recommended range may be used when unusual project conditions require special consideration. In this case, please contact your local regional Sika office or Sika Technical Service Department for more information and assistance.

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