Product Data Sheet Show all documents

Sika® ViscoCrete®-20 RM (GB)

High-Range Water Reducing/Superplasticising Concrete Admixture

Sika® ViscoCrete®-20 RM (GB) is a liquid admixture for concrete which is used as a midrange water reducer/plasticiser. It meets the requirements of BS EN 934-2 HRWRA/Superplasticiser.

  • Mid-range water reductions resulting in higher strengths and densities
  • Efficient at lower dosages
  • Flexible application as both WRA and HRWR
  • Less sensitive to variations in cement and aggregate types
  • Improved cohesion properties
  • Improved early and ultimate strengths
  • Improved rheology
  • Improved durability
  • Reduced segregation and bleeding
  • Reduced drying shrinkage
  • Reduced mix costs
* Compared to concrete without admixture
Product Data Sheet Show all documents

Usage

  • Sika® ViscoCrete®-20 RM (GB) is a unique product that is suitable for the production of ready mixed concrete
  • Applications that require high quality concrete
  • Applications that require improved consistence retention
  • High performance concrete
  • Self compacting concrete
 

Advantages

  • Mid-range water reductions resulting in higher strengths and densities
  • Efficient at lower dosages
  • Flexible application as both WRA and HRWR
  • Less sensitive to variations in cement and aggregate types
  • Improved cohesion properties
  • Improved early and ultimate strengths
  • Improved rheology
  • Improved durability
  • Reduced segregation and bleeding
  • Reduced drying shrinkage
  • Reduced mix costs
* Compared to concrete without admixture

Packaging

20 litres, 1000 litre IBC

Colour

Brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS EN 934-2 Tables 3.1 & 3.2 DoP 02 13 01 01 100 0 003322 1088, certified by Factory Production Control Body 0086, Certificate 541325, and provided with the CE mark
Product Information

Chemical Base

Modified polycarboxylate

Shelf Life

12 months from date of production if stored properly in undamaged containers.

Storage Conditions

Store in dry conditions at temperatures between +5°C and +25°C. Protect from direct sunlight and frost.

Density

1.05 kg/l (at +20°C)

pH-Value

3.5 – 4.0

Total Chloride Ion Content

<0.10% w/w (chloride free)
Technical Information

Specific Advice

Freezing Point: +1°C
Air Entrainment: Negligible
Effect on Setting: Slight extension to normal setting
Effect of Overdosing: Increased workability and segregation
Alkali Content: Max 0.25% as NA2O equiv

Application

Application Information

Compatibility

Sika®Admixtures:

  • Compatibility information available on request

Cements:

  • All cement combination

DISPENSING

  • Sika® ViscoCrete®-20 RM (GB) should be dispensed through suitable calibrated dosing equipment.
  • The standard rules of good concreting practice, concerning production as well as placing, are to be followed. Refer to relevant standards. Fresh concrete must be cured properly.
  • Sika® ViscoCrete®-20 RM (GB) should not be added to dry cement
  • Sika® ViscoCrete®-20 RM (GB) should be added with the mixing water
Consumption

Recommended Dosage

0.3 – 1.0 % by weight of cement as mid-range water reducer
0.5 – 1.5 % by weight of cement as high range water reducer

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