Product Data Sheet Safety Data Sheet Show all documents

Sika ViscoFlow®-2020

WATER REDUCING AND WORKABILITY RETAINING ADMIXTURE

Sika ViscoFlow®-2020 is a water reducing and workability retaining admixture utilizing Sika ViscoFlow technology. 

Various levels of water reduction and workability retention can be achieved by adjusting the dosage rate of Sika ViscoFlow®-2020.    At lower dosage rates Sika ViscoFlow®-2020 provides mild to moderate water reduction with some extended workability. At higher dosage rates, or when used in combination with other water reducing admixtures, Sika ViscoFlow®-2020 provides high range water reduction with greater workability retention and the superplasticizing action allows for the production of high slump/flow concrete that can typically be placed with minimal or no vibration even at an extremely low water/cementitious ratio.   Concrete produced with Sika ViscoFlow®-2020 typically maintains consistency and workability for longer periods. The combined water reducing and superplasticizing action of Sika ViscoFlow®-2020 provides the following benefits:    ▪ Reduced water cement ratios produce more durable, dense concrete with reduced permeability and shrinkage, ▪ Consistent and predictable slump life performance, ▪ Reduced concrete stickiness allowing lower pumping pressures,
▪ Improved finishability of concrete, ▪ Increased early and ultimate strengths allow faster structural use of concrete, ▪ Minimal effect on setting times at lower dosage rates, ▪ Increased slump and workability improves efficiency of labor and reduces labor costs,
▪ Minimizes or eliminates the need for concrete retempering.    Sika ViscoFlow®-2020 does not contain intentionally added chlorides.
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika ViscoFlow®-2020 is designed for use in both ready mix and precast applications whenever extended workability, high plasticity, and increased early/ultimate strengths are required. Sika ViscoFlow®-2020 can be used for production of SCC (Self-Consolidating Concrete) as well as for production of conventional slump concrete.

Advantages

Various levels of water reduction and workability retention can be achieved by adjusting the dosage rate of Sika ViscoFlow®-2020.    At lower dosage rates Sika ViscoFlow®-2020 provides mild to moderate water reduction with some extended workability. At higher dosage rates, or when used in combination with other water reducing admixtures, Sika ViscoFlow®-2020 provides high range water reduction with greater workability retention and the superplasticizing action allows for the production of high slump/flow concrete that can typically be placed with minimal or no vibration even at an extremely low water/cementitious ratio.   Concrete produced with Sika ViscoFlow®-2020 typically maintains consistency and workability for longer periods. The combined water reducing and superplasticizing action of Sika ViscoFlow®-2020 provides the following benefits:    ▪ Reduced water cement ratios produce more durable, dense concrete with reduced permeability and shrinkage, ▪ Consistent and predictable slump life performance, ▪ Reduced concrete stickiness allowing lower pumping pressures,
▪ Improved finishability of concrete, ▪ Increased early and ultimate strengths allow faster structural use of concrete, ▪ Minimal effect on setting times at lower dosage rates, ▪ Increased slump and workability improves efficiency of labor and reduces labor costs,
▪ Minimizes or eliminates the need for concrete retempering.    Sika ViscoFlow®-2020 does not contain intentionally added chlorides.

Packaging

Available in 208-litre drums, 1040-litre totes and bulk delivery.

Colour

Pale Green Liquid

Product Details

Sustainability / Certifications / Approvals

ENVIRONMENTAL INFORMATION

Lower carbon footpring through reduction in cementitious materials. Less water consumed per volume of concrete.

APPROVALS / CERTIFICATES

Sika ViscoFlow®-2020 meets the requirements of ASTM C494/AASHTO M 194, Type A, F & S.
Product Information

Shelf Life

Shelf life when stored in original packaging in dry warehouse conditions between 5-27°C is one year from the date of manufacture.

Storage Conditions

Sika ViscoFlow®-2020 should be stored above 5°C. If frozen, thaw and agitate thoroughly to return to a normal state. Protect from direct sunlight.

Specific Gravity

Approx. 1.054

Application

Application Information

Mixing

Measure the required quantity manually or by automated dispenser. Add Sika ViscoFlow®-2020 directly into the freshly mixed concrete, or as an
integral material in the batching cycle. Do NOT mix with dry cement. Sika ViscoFlow®-2020 may be dispensed on-site directly prior to placement.
Care must be taken to mix thoroughly. When used in combination with other admixtures dispense each admixture separately into the mix.

  
Compatibility: Sika ViscoFlow®-2020 can be used in combination with other Sika admixtures and can be successfully used in mix designs utilizing supplementary cementitious materials.
Consumption

Recommended Dosage

The typical dosage rate of Sika ViscoFlow®-2020 will vary between 130-520 mL / 100 kg of cement or cementitious materials. If maximum water reduction or workability retention is required, dosage rates up to 975 mL / 100 kg of cement or cementitious materials may be used. Various factors will affect the dosage rates. Dosage rates outside of the typical range may be used.

  

It is recommended to conduct trial mixes with the actual materials to determine the required dosage for optimum performance.

     
To the extent specialized materials (such as microsilica) are specified, extreme ambient project conditions are encountered, or other unusual
project conditions require special consideration outside the recommended dosage, please contact your local regional Sika Representative prior to using the Sika admixture.

Documents