Product Data Sheet Safety Data Sheet Show all documents
Sika ViscoFlow®-2000 (GB)

Sika ViscoFlow®-2000 (GB)

High range water reducing/superplasticising concrete admixture with enhanced workability retention

Sika ViscoFlow®-2000 (GB) is a liquid admixture for concrete based on unique polycarboxylate polymers technologies. Sika ViscoFlow®-2000 (GB) is designed as a high range water reducer or superplasticiser. It is particularly suited for use in concretes that require low water/cement ratios and / or high water reductions with excellent workability retention properties of up to 3 hours.
Sika ViscoFlow®-2000 (GB) meets the requirements of BS EN 934-2 table.

  • High range water reductions resulting in higher strengths and densities
  • Extended consistence retention
  • Improved cohesion properties
  • Improved early and ultimate strengths
  • Excellent placement characteristics
  • Improved rheology
  • Improved durability
  • Reduced segregation and bleeding
  • Reduced drying shrinkage
  • Reduced mix costs
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Sika ViscoFlow®-2000 (GB) is a unique product that is suitable for the production of ready mixed concrete
  • Applications that require extended consistence retention without delayed setting
  • Suitability for use across broad range of consistence classes from S4 – SF3
  • High performance concrete
  • Self compacting concrete
  • High rise/pumped concrete
  • Slip form concrete
  • Improved effectiveness in higher ambient temperatures
 

Advantages

  • High range water reductions resulting in higher strengths and densities
  • Extended consistence retention
  • Improved cohesion properties
  • Improved early and ultimate strengths
  • Excellent placement characteristics
  • Improved rheology
  • Improved durability
  • Reduced segregation and bleeding
  • Reduced drying shrinkage
  • Reduced mix costs

Packaging

20 litre drum, 200 litre drum, 1000 litre IBC

Colour

Clear to slightly hazy liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS EN 934-2 Tables 3.1 & 3.2

DoP 00003286, 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.

Specific Gravity

1.08 kg/l (at +20°C)

pH-Value

4.1 (+/-1.0)

Total Chloride Ion Content

<0.1%
Technical Information

Specific Advice

Alkali Content: <0.25%

Freezing Point: +1°C

Air Entrainment:  Negligible, minimal increase

Effect on Setting:  Extension to normal setting time

Effect of Overdosing:  Increased workability and segregation

Application

Application Information

Compatibility

Sika ViscoFlow®-2000 (GB) may be combined with many other Sika products.

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

DISPENSING

Sika ViscoFlow®-2000 (GB) should be dispensed through suitable calibrated dosing equipment.
Sika ViscoFlow®-2000 (GB) is added to the gauging water or added with it into the concrete mixer.
Consumption

Recommended Dosage

0.6-1.9% by weight of cement
Application steps

APPLICATION INSTRUCTIONS

Application Method / Tools
 

  • The standard rules of good concreting practice, concerning production and placing, are to be followed.
  • Laboratory trials shall 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 soon as possible.
     

Notes on Application / Limitations
 

  • When using Sika ViscoFlow®-2000 (GB) a suitable mix design has to be taken into account and local material sources shall be trialled.
  • Sika ViscoFlow®-2000 (GB) shall not be added to dry cement.
  • Excessive water addition or overdosing may cause bleeding or segregation.
  • Support from our Technical Service Department is recommended.

Frost:

If frozen and / or if precipitation has occurred, Sika ViscoFlow®-2000 (GB) may be used after thawing slowly at room temperature followed by intensive remixing.

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