Product Data Sheet Safety Data Sheet Show all documents

Sika® ViscoCrete® Duo Pro

Combined Superplasticiser / Viscosity Modifying Admixture for GRC Precast Concrete Production

Sika® ViscoCrete® Duo Pro is a liquid high performance superplasticiser and viscosity modifying admixture providing improved rheology and robustness to high workability concretes and cementitious mortars. Sika Viscocrete Duo Pro is based on polycarboxylate polymers.

  • High-range water reductions resulting in higher strengths and densities
  • Improved cohesion properties in highly fluid concrete or SCC
  • Improved durability
  • Improved early and ultimate strengths
  • Optimal rheology properties for SCC production
  • Reduced segregation and bleeding
  • Reduced drying shrinkage
  • Reduced consistence retention
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika® ViscoCrete® Duo Pro is a unique product that is specifically designed for the production of GRC precast concrete  

Advantages

  • High-range water reductions resulting in higher strengths and densities
  • Improved cohesion properties in highly fluid concrete or SCC
  • Improved durability
  • Improved early and ultimate strengths
  • Optimal rheology properties for SCC production
  • Reduced segregation and bleeding
  • Reduced drying shrinkage
  • Reduced consistence retention

Packaging

1000 L IBC

Colour

Light brown liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

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

DoP 71831259, certified by Factory Production Control Body 1029 and provided with the CE mark

DoC 40241154, certified by Factory Production Control Body 0120 and provided with the UKCA mark
Product Information

Chemical Base

Modified polycarboxylate

Shelf Life

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

Storage Conditions

Dry conditions at temperatures between +5°C and +25°C. Protect from direct sunlight and frost (freezing point +1°C).

Density

1.09 kg/L

Total Chloride Ion Content

<0.10% w/w (chloride free)

Equivalent Sodium Oxide

<0.35 % w/w (alkali content)
Technical Information

Specific Advice

Effect on Setting: Reduction in setting time
Effect of Overdosing: Increased workability and segregation

Application

Application Information

Dispensing

Sika® ViscoCrete® Duo Pro is added to the gauging water or added with it into the concrete mixer.  A typical mixing time of at least 60 seconds is recommended.

Compatibility

Sika® ViscoCrete® Duo Pro is compatible with all Sika admixtures and cement types
Consumption

Recommended Dosage

0.3 - 1.2% by weight of cement
Application steps

APPLICATION INSTRUCTIONS

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 early as possible.

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