Product Data Sheet Show all documents

Sika ViscoFlow®-23

pce superplasticizer with a high concentration for ready-mixed concrete

Sika ViscoFlow®-23 is an economical superplasticizer for all areas of ready-mixed concrete.

Sika ViscoFlow®-23 is based on the innovative Sika polymers, which has been specially designed and developed for the ready-mixed concrete industry. It causes:
  • Spatial separation of fine parts
  • Fast adsorption
  • Lower frictional forces between the cement and aggregates
  • Lower water requirements
  This enables for concrete:
  • Low w/c ratios with strong water reduction (therefore higher densities and strength)
  • Soft consistencies through high flowability (hence reduced processing work)
  • Good slump-keeping through high flowability (hence reduced processing work)
  • Good slump-keeping and optimum workability, also at higher concrete temperatures
  • No impairment of the early strength development, even in the winter
Product Data Sheet Show all documents

Usage

  • Ready-mixed concrete of the consistency classes F3 to F6, ECC and SCC
  • Ready-mixed concrete with optimum workability time
  • Ready-mixed concrete with economic dosage levels
  • Ready-mixed concrete with low w/c ratios

Advantages

Sika ViscoFlow®-23 is based on the innovative Sika polymers, which has been specially designed and developed for the ready-mixed concrete industry. It causes:
  • Spatial separation of fine parts
  • Fast adsorption
  • Lower frictional forces between the cement and aggregates
  • Lower water requirements
  This enables for concrete:
  • Low w/c ratios with strong water reduction (therefore higher densities and strength)
  • Soft consistencies through high flowability (hence reduced processing work)
  • Good slump-keeping through high flowability (hence reduced processing work)
  • Good slump-keeping and optimum workability, also at higher concrete temperatures
  • No impairment of the early strength development, even in the winter

Packaging

Drum: 200 kg
IBC: 1000 kg
Bulk delivery: From 6 t

Colour

Liquid / lightyellow

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Complies with EN 934-2 Table 2 (plasticizers) and tables 3.1/3.2 (superplasticizer).
Contains only components according to EN 934-1:2008, Annex A. 1.
Applicable in concrete with alkali-sensitive aggregates (Alkali Directive 4.3.2 (1)).
Complies with the requirements of the ZTV-ING. Can be used in all EU countries.
Product Information

Composition

Polycarboxylate ether

Shelf life

Minimum of 1 year shelf life in sealed containers. Mix before using after longer storage times.

Storage conditions

Protect against frost, strong sunlight and contamination. Utilise clean tanks and containers when delivered in bulk.

Density

1.06 g/cm³

pH-Value

approx. 4.5

Total chloride ion content

≤ 0.10 %

Equivalent sodium oxide

≤ 1,0 %

Application

Application Information

Dispensing

In the case of immediate addition in the works, we recommend that Sika ViscoFlow®-23 is mixed in at the end of the water addition to the concrete mixture and before other concrete additives. To obtain optimum utilisation of the liquefaction potential, we recommend a wet mixing time of at least 45 seconds with optimal mixing. Commence the fine water dosage after at least 2/3 of the wet mixing time to prevent too soft consistencies. With post-dosing on the building site, we recommend the use of the same superplasticizer as that utilised in the works. When adding to the truck mixer, a uniform distribution of the superplasticizer in the concrete must be ensured. For this purpose, we recommend that the superplasticizer is added on the concrete. The mixing time should be 1 minute per m³, however at least 5 minutes.
Consumption

Recommended dosage

0.2 – 2.5 % of the cement weight

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