Product Data Sheet Show all documents

SikaControl®-40

Shrinkage reducing admixture

SikaControl®-40 is a liquid based shrinkage reducing admixture used to produce high performance concrete. SikaControl®-40 increases cohesion within the concrete pore system which reduces water loss and reduces drying shrinkage to improve concrete durability.

  • Reduced drying shrinkage
  • Reduced drying shrinkage cracking
  • Reduced slab curling potential
  • Reduced permeability
  • Increased concrete durability
  • Suitable for use in reinforced and pre-stressed concrete
  • Does not contain chlorides or any other substances which promote steel corrosion
Product Data Sheet Show all documents

Usage

  • Structures with strict demands regarding crack width limitations
  • In concrete where low drying shrinkage is important
  • Increasing the joint spacing of situ concrete floors without increasing the risk of shrinkage cracking
  • In thin bonded topping slabs, to minimise the differential shrinkage from the existing substrate
  • In concrete elements which are restrained against shrinkage
  • Concrete in marine environments requiring enhanced durability
  • Watertight and water retaining concrete structures
 

Advantages

  • Reduced drying shrinkage
  • Reduced drying shrinkage cracking
  • Reduced slab curling potential
  • Reduced permeability
  • Increased concrete durability
  • Suitable for use in reinforced and pre-stressed concrete
  • Does not contain chlorides or any other substances which promote steel corrosion

Packaging

200 Litre drums
1000 Litre IBC

Colour

Reddish liquid

Product Details

Product Information

Chemical Base

Hydroxyl combination

Shelf Life

12 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Density

~1,0 kg/l (at +20 °C)

pH-Value

~11,5

Total Chloride Ion Content

< 0,10 M-% (chloride-free)

Equivalent Sodium Oxide

< 1,0 M-%
Technical Information

Concreting Guidance

The standard rules of good concreting practice, concerning production and placing must be followed.
Laboratory trials must be carried out before concreting on site, especially when using a new mix design or producing new concrete components.
Fresh concrete must be cured properly and curing applied as early as possible.

Concrete Mix Design

When using SikaControl®-40, a suitable mix design must be calculated. The local material sources used within the mix design must always be trialled and approved for suitability before commencement of the project.

Effect on Setting

The application of SikaControl®-40 will result in retarded setting of the concrete and in cold ambient temperatures this effect will be increased.
When combining SikaControl®-40 with retarding admixtures, their combined retardation effect and the delay in setting time must be taken into account.

Application

Application Information

Compatibility

SikaControl®-40 may be combined with many other Sika products.
Trials must always be carried out before combining products in specific mixes. Contact Sika Technical Services for additional information and any specific combinations.

Dispensing

SikaControl®-40 must be measured using suitable equipment then mixed with the batching gauging water or both added together at the same time into the batching plant concrete mixer.

Restrictions

SikaControl®-40 must not be added to dry cement.
Consumption

Recommended Dosage

0,5–2,0 % by weight of cement

Note: Application at higher dosages will increase the retardation effects.

Documents