Product Data Sheet Show all documents

Sika® ViscoCrete®-4220 HE

High Performance Superplasticizing Admixture

Imparts very high workability, allows a large reduction in water content and gives high early strength.

Sika® ViscoCrete®-4220 HE produces a more uniformly cohesive high quality free flowing concrete Sika® ViscoCrete®-4220 HE will result in the following advantages of concrete:
  • Improved dispersion properties
  • Very high water reduction
  • Improved strength and density
  • Improved durability
  • Improved cohesion properties
  • Improved rheology
  • Improved flowability
  • Reduced drying shrinkage
Product Data Sheet Show all documents

Usage

Sika® ViscoCrete®-4220 HE a superplasticizer for free flowing concrete in floors, slabs, foundations, slender components with dense re inforcement, walls and columns and other structural elements. Sika® ViscoCrete®-4220 HE  is mainly used for the following types of concrete:        
  • High performance concrete
  • High early strength concrete
  • Ready mixed concrete
  • Self compacting concrete
  • Precast concrete
  • Pre stressed concrete
  • Pumped concrete
 

Advantages

Sika® ViscoCrete®-4220 HE produces a more uniformly cohesive high quality free flowing concrete Sika® ViscoCrete®-4220 HE will result in the following advantages of concrete:
  • Improved dispersion properties
  • Very high water reduction
  • Improved strength and density
  • Improved durability
  • Improved cohesion properties
  • Improved rheology
  • Improved flowability
  • Reduced drying shrinkage

Packaging

255 kg drums /Bulk supply

Colour

Light Brown Liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

IS 9103, ASTM C494
Product Information

Chemical Base

Aqueous solution of modified poly carboxylate

Shelf Life

12 months from date of production if stored properly in undamaged unopened, original sealed packaging.

Storage Conditions

Store in dry conditions at temperatures between +10°C and +40°C. Protect from direct sunlight and frost.

Density

~1.13 kg/l at 25°C

pH-Value

≥ 6

 

Application

Application Information

Compatibility

Sika® ViscoCrete®-4220 HE may be combined with many other Sika® Products.

It is compatible with all types of ordinary Portland cement, PPC, PSC and cement replacement materials.

Important: Always conduct trials before combining products in specific mixes and contact our Technical Service Department for information about specific combinations.

DISPENSING

Sika® ViscoCrete®-4220 HE can be added into the mixing water or directly into the concrete mixer after 50 – 70% of the mixing water has been added.

The addition of Sika® ViscoCrete®-4220 HE to dry aggregate or cement is not recommended.

To achieve optimum performance a minimum wet mixing time, which is depending on the mixing conditions and the mixer performance, of 60 seconds is recommended.
Consumption

Recommended Dosage

Optimum dosage of Sika® ViscoCrete®-4220 HE should be determined by site trials.

Recommended dosage:  0.2 – 2.0% by weight of cementitious.

A higher dosage might be used if agreed by client, consultant. Stir well before use.

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