Product Data Sheet Show all documents

Sika ViscoFlow®-615 TZ

Superplasticiser / High range water reducer

Sika ViscoFlow®-615 TZ is a high range water reducer and a workability enhancing
admixture for concrete based on Sika’s PCE technology. Sika ViscoFlow®-615 TZ
extends the workability time depending on dosage.

Sika ViscoFlow®-615 TZ works based on a combination of electrostatic adsorption and steric repulsion effects. Thus, solid particles can be effectively dispersed and a high level of fluidity can be reached with less water.
As a result, Sika ViscoFlow®-615 TZ can provide higher workability time and stability than conventional dispersants.
  •  Keeps workability for extended time
  •  Slump retention without additional retardation and subsequent fast strength development
  •  Constant slump flow and smoothness of the concrete over hours
  •  Extremely powerful water reduction (thereby creating high concrete density and high strengths)
  •  Controlled retarding properties
  •  Excellent plasticising effects, resulting in improved flow, placing and compaction characteristics
  •  Greatly improved water tightness
  •  Reduced creeps and shrinkage
  •  Reduced carbonation rate of the concrete
Sika ViscoFlow®-615 TZ does not contain chlorides or any other materials which promote the corrosion of steel reinforcement. It is therefore suitable for reinforced and pre-stressed concrete.
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Product Data Sheet Show all documents

Usage

Sika ViscoFlow®-615 TZ is especially suitable for concrete mixes with extended
workability requirements as well as improved flow characteristics.
Sika ViscoFlow®-615 TZ is mainly used for the following applications:
  •  Concrete with highest possible water reduction up to 30 %
  •  High strength concrete applications
  •  Hot weather concreting and concrete with extended transportation and workability time. Up to 4hours workability time possible
  •  Concrete produced with very reactive cements.

Advantages

Sika ViscoFlow®-615 TZ works based on a combination of electrostatic adsorption and steric repulsion effects. Thus, solid particles can be effectively dispersed and a high level of fluidity can be reached with less water.
As a result, Sika ViscoFlow®-615 TZ can provide higher workability time and stability than conventional dispersants.
  •  Keeps workability for extended time
  •  Slump retention without additional retardation and subsequent fast strength development
  •  Constant slump flow and smoothness of the concrete over hours
  •  Extremely powerful water reduction (thereby creating high concrete density and high strengths)
  •  Controlled retarding properties
  •  Excellent plasticising effects, resulting in improved flow, placing and compaction characteristics
  •  Greatly improved water tightness
  •  Reduced creeps and shrinkage
  •  Reduced carbonation rate of the concrete
Sika ViscoFlow®-615 TZ does not contain chlorides or any other materials which promote the corrosion of steel reinforcement. It is therefore suitable for reinforced and pre-stressed concrete.

Packaging

200L, 1000L, IBC, bulk deliveries

Colour

Pale yellow

Product Details

Product Information

Composition

Aqueous solution of modified polycarboxylates

Shelf life

12 months if stored properly in original unopened packaging

Storage conditions

In a dry area between 5ºC and 35ºC. Protect from direct sunlight, frost and
contamination

Density

1.08 g/cm3 ± 0.02

pH-Value

5±1

Application

Application Information

Dispensing

Sika ViscoFlow®-615 TZ can be added to the mixing water prior to its addition to the aggregates or directly to the freshly mixed concrete (the plasticizing effect is morePronounced). Never add Sika ViscoFlow®-615 TZ directly to dry cement oraggregates(Efficiency reduction). Sika ViscoFlow®-615 TZ can be used with other Sika admixtures provided that preliminary testing is done to ascertain compatibility. Allow enough time for the concrete to mix thoroughly.

Restrictions

  •  We recommend testing to determine the correct dosage limitations of the admixture and whenever concrete composition is changed.
  •  When accidental overdosing occurs, the set retarding effect increases.During this period the concrete must be kept moist in order to prevent premature drying out.

For further details contact our Technical Department.
Consumption

Recommended dosage

According to the main goal we recommend the dosage of 0.4 %– 2.0% by weight of cement. It is advisable to carry out trial mixes to establish the exact dosage rate required.

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