Product Data Sheet Safety Data Sheet Show all documents

Sika® ViscoCrete®-225 P

HIGH RANGE WATER REDUCING POWDERED SUPERPLASTICIZER

Sika® ViscoCrete®-225 P is a third generation high range water reducing and superplasticizing powder admixture for use in concrete and mortar. It is based on Sika’s patented ‘ViscoCrete®’ polycarboxylate polymer technology.

Sika® ViscoCrete®-225 P is a unique, specially formulated polycarboxylate powder that combines different mechanisms and is compatible with a variety of cement chemistries. Through surface adsorption and steric separation effect on the binder particles, in parallel to the hydration process, the following advantages may be observed:
  • Effective when utilized with cements that have high C3A, sulphate and alkali content.
  • Effective when utilized with ordinary portland cements (OPC) and blends of OPC and aluminate cements.
  • Compatible with other additives (i.e. citric acid).
  • Extremely high water reduction (resulting in high density and strengths).
  • Excellent flowability (resulting in greatly reduced placing and compacting efforts).
  • Increased high early strength development.
  • Improved shrinkage and creep behavior.
  • Low absorption time, “wets out” faster then competitive materials.
  • Medium retardation.
  • Ideal for use in self-leveling, self-compacting applications.
 
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika® ViscoCrete®-225 P may be used in a variety of concrete applications but is especially suited for the production of mortar and concrete dry mix. High water reduction, excellent flowability, coupled with good early strengths, have a very positive influence on the properties of the mortars and concrete containing it. Sika® ViscoCrete®-225 P facilitates extreme water reduction, excellent flowability, optimal cohesion, and promotes excellent self-compacting behavior. Sika® ViscoCrete®-225 P is recommended for the following applications:
  • Grouts in general (including non-shrink grouts)
  • Screeds in general (including self-levelling screeds)
  • Gypsum and anhydrite screeds
Sika® ViscoCrete®-225 P has been formulated to provide maximum water reduction however is suitable and may be utilized for all levels of water reduction. Can be combined with other Sika® ViscoCrete® powders to attain maximum effects such as flowability and retardation.  

Advantages

Sika® ViscoCrete®-225 P is a unique, specially formulated polycarboxylate powder that combines different mechanisms and is compatible with a variety of cement chemistries. Through surface adsorption and steric separation effect on the binder particles, in parallel to the hydration process, the following advantages may be observed:
  • Effective when utilized with cements that have high C3A, sulphate and alkali content.
  • Effective when utilized with ordinary portland cements (OPC) and blends of OPC and aluminate cements.
  • Compatible with other additives (i.e. citric acid).
  • Extremely high water reduction (resulting in high density and strengths).
  • Excellent flowability (resulting in greatly reduced placing and compacting efforts).
  • Increased high early strength development.
  • Improved shrinkage and creep behavior.
  • Low absorption time, “wets out” faster then competitive materials.
  • Medium retardation.
  • Ideal for use in self-leveling, self-compacting applications.
 

Packaging

20 kg (44 lb) bag, 40 bags/pallet

Colour

White powder

Product Details

Product Information

Shelf Life

Shelf life when stored properly in undamaged, unopened, original sealed packaging in dry warehouse conditions between 7°C - 27°C (45°F and 80°F) is 1 year.

Storage Conditions

Product Conditioning : Bag has to be sealed airtight after opening to prevent access of moisture, which will cause the polymer to lump due to its hygroscopic nature.

Density

Approx. 1.1

Application

Application Information

Mixing

Sika® ViscoCrete®-225 P is added to the dry mix at the beginning of batching cycle. For optimum utilization of the high water reduction it is recommended to allow a minimal wet mixing time of 30 seconds.

Sika® ViscoCrete®-225 P is highly effective as single added admixture or in combination with other Sika admixtures. If used in combination with certain Sikament water reducing admixtures plastic properties can be affected. Please contact your Sika Canada Technical Sales Representative for further information.
Consumption

Recommended Dosage

Depending on the application, the dosage of Sika® ViscoCrete®-225 P varies from 0.05 - 0.5% of the powder weight. At high dosage Sika® ViscoCrete®-225 P can cause retardation as well as at low temperatures.

Documents