Product Data Sheet Show all documents

Sika® ViscoCrete®-3270

CONCRETE ADMIXTURE FOR HIGH FLOW / SELF COMPACTING CONCRETE

Sika® ViscoCrete®-3270 is a third generation superplasticiser for concrete and mortar. It is particularly developed for the production of high flow concrete with exceptional flow retention properties and significant reduction in bleeding and segregation.

Sika® ViscoCrete®-3270 acts by surface adsorption on the cement particles producing a sterical separation effect. Concrete produced with Sika® ViscoCrete®-3270 exhibits the following properties:
  • Excellent flowability (resulting in highly reduced placing and compacting efforts).
  • Strong self-compacting behaviour.
  • Extremely high water reduction (resulting in high density and strengths).
  • Improved shrinkage and creep behaviour.
  • Increased carbonation resistance of the concrete.
  • Improved finish.
  • Reduce tendency to bleeding and segregation.
Sika® ViscoCrete®-3270 does not contain chlorides or other ingredients which promotes steel corrosion.
Therefore, it may be used without restriction for reinforced and pre-stressed concrete construction.
Sika® ViscoCrete®-3270 gives the concrete extended workability and depending on the mix design and the quality of materials used, self-compacting properties can be maintained for more than 1 hour at 30 °C.
Product Data Sheet Show all documents

Usage

Sika® ViscoCrete®-3270 facilitates extreme water re- duction, excellent flowability with optimal cohesion and strong self-compacting behaviour.
Sika® ViscoCrete®-3270 is used for the following types of concrete:
  • High flow concrete
  • Self-compacting concrete (S.C.C.)
  • Concrete with high water reduction
  • High strength concrete
  • Watertight concrete
The combination of high water reduction, excellent flowability and high early strength provides clear benefits in the above mentioned applications.  

Advantages

Sika® ViscoCrete®-3270 acts by surface adsorption on the cement particles producing a sterical separation effect. Concrete produced with Sika® ViscoCrete®-3270 exhibits the following properties:
  • Excellent flowability (resulting in highly reduced placing and compacting efforts).
  • Strong self-compacting behaviour.
  • Extremely high water reduction (resulting in high density and strengths).
  • Improved shrinkage and creep behaviour.
  • Increased carbonation resistance of the concrete.
  • Improved finish.
  • Reduce tendency to bleeding and segregation.
Sika® ViscoCrete®-3270 does not contain chlorides or other ingredients which promotes steel corrosion.
Therefore, it may be used without restriction for reinforced and pre-stressed concrete construction.
Sika® ViscoCrete®-3270 gives the concrete extended workability and depending on the mix design and the quality of materials used, self-compacting properties can be maintained for more than 1 hour at 30 °C.

Packaging

200 L drums (non-returnable)
1 000 L IBC's or bulk delivery

Colour

Liquid / Brownish

 

Product Details

Product Information

Composition

Aqueous solution of modified polycarboxylate copolymers

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 +5 °C and +35 °C. Protect from direct sunlight and frost.
Technical Information

Concreting guidance

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

Application

Application Information

Compatibility

Sika® ViscoCrete®-3270 may be combined with the following products:

  • Plastiment® P121R
  • Plastiment® VZ
  • Sika® Fume
  • SikaFibre®

Do not use viscocrete / viscoflow series combined with sikament series.
To produce flowing and / or self-compacting concrete, special concrete mix design is required.
Pre-trials are recommended and mandatory if combinations with the above products are required.
Please consult to our Technical Service Department.

DISPENSING

Sika® ViscoCrete®-3270 is added to the gauging water or simultaneously poured with it into the concrete mixer. For optimum utilisation of its high water reduction property, we recommend thorough mixing at a minimal wet mixing time of 60 seconds.
The addition of the remaining gauging water (to fine tune concrete consistency) may only be started after two-thirds of the wet mixing time, to avoid surplus water in the concrete.

 
Consumption

Recommended dosage

For soft plastic concrete

0.2 - 0.6 % by weight of binder

For flowing and self compacting concrete (S.C.C)0.6 - 2.0 % by weight of binder

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