Product Data Sheet Show all documents

SikaPlast®-220 VX

Multi-purpose water reducing admixture

SikaPlast®-220 VX is a multi-purpose water reducer and superplasticizer, utilizing Sika's 'ViscoCrete' polycarboxylate polymer technology.

Water Reduction: SikaPlast®-220 VX can be dosed at low to medium quantities to obtain water reduction from 5-15% and will achieve water reduction up to 22% at high dosage rates.
High Plasticity: The superplasticizing action of SikaPlast®-220 VX provides highslump, flowing concrete that maintains excellent workability and may be placed with minimal vibration.
Extended Slump Life and Set Control: SikaPlast®-220 VX has been formulated to provide controlled and predictable extended slump life for periods of 90 to 120 minutes (depending on dosage) allowing good slump retention without significant loss in early strength development.
The combined high range water reduction and superplasticising action of SikaPlast®-220 VX provides the following benefits in hardened concrete:
  • Higher early compressive strengths for earlier removal of forms and structural use of concrete.
  • Higher ultimate strengths allow for greater engineering design flexibility and structural economies.
  • Reduced water cement ratios produce more durable, dense concrete with reduced permeability.
.
.SikaPlast®-220 VX does not contain formaldehyde, calcium chloride or any other added chlorides and will not initiate or promote the corrosion of steel present in the concrete.
   
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Product Data Sheet Show all documents

Usage

SikaPlast®-220 VX may be used in both ready mix and on site batching applications:
As a plant added high range water reducer (High dosage range), to provide excellent plasticity, while maintaining slump for ~120 minutes with minimal retardation.
  • As a plant added mid range water reducer (Medium dosage range), for pumped concrete flatwork and applications where superior finishing characteristics are required with low retardation levels.
  • SikaPlast®-220 VX is ideal for use with lean, harsh concrete mixes, and concrete containing, slag, fly ash or microsilica.
 

Advantages

Water Reduction: SikaPlast®-220 VX can be dosed at low to medium quantities to obtain water reduction from 5-15% and will achieve water reduction up to 22% at high dosage rates.
High Plasticity: The superplasticizing action of SikaPlast®-220 VX provides highslump, flowing concrete that maintains excellent workability and may be placed with minimal vibration.
Extended Slump Life and Set Control: SikaPlast®-220 VX has been formulated to provide controlled and predictable extended slump life for periods of 90 to 120 minutes (depending on dosage) allowing good slump retention without significant loss in early strength development.
The combined high range water reduction and superplasticising action of SikaPlast®-220 VX provides the following benefits in hardened concrete:
  • Higher early compressive strengths for earlier removal of forms and structural use of concrete.
  • Higher ultimate strengths allow for greater engineering design flexibility and structural economies.
  • Reduced water cement ratios produce more durable, dense concrete with reduced permeability.
.
.SikaPlast®-220 VX does not contain formaldehyde, calcium chloride or any other added chlorides and will not initiate or promote the corrosion of steel present in the concrete.
   

Packaging

200 and 1000 Litre containers

Colour

Brown liquid

Product Details

Product Information

Chemical Base

Aqueous solution of modified polycarboxylates.

Shelf Life

12 months from date of production

Storage Conditions

Store properly in undamaged unopened, original sealed packaging, in dry conditions at temperatures between +5°C and +25°C. Protect from direct sunlight and frost.

Density

1,07 kg/litre

pH-Value

7.0 +/- 1
Technical Information

Concreting Guidance

The standard rules of good concreting practice concerning production and placing are to be followed.

Fresh concrete must be cured properly and as early as possible.

Application

Application Information

Dispensing

SikaPlast®-220 VX is added to the gauging water or simultaneously with it
poured into the concrete mixer. For optimum utilisation of the high water
reduction, 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 2/3 of wet mixing time, to avoid surplus water in the concrete.
SikaPlast®-220 VX can also be added directly to the freshly mixed concrete
in the concrete mixer at the end of the batching cycle.
Frozen SikaPlast®-220 VX
Frozen SikaPlast®-220 VX may be used after it has been slowly thawed at room temperature and intensively mixed.
Combinations with other admixtures
SikaPlast®-220 VX is highly effective as single admixture or in combination with many admixtures in the Sika System.
Field evaluations are needed to determine, based on local materials, the proper dosage of air entraining agent that needs to be used. In certain instances, it may be possible to reduce the air entraining dosage rate by as much as half or less to achieve the desired air content in the concrete mix. Please contact your local Sika representative for more information and assistance.
Combinations with microsilica
SikaPlast®-220 VX is well suited for use with microsilica, slag and fly ash because of its water reduction capability and superior slump control.
Consumption

Recommended Dosage

Dosage rates will vary according to materials used, ambient conditions and the requirements of a specific project.
.
For general concrete applications (water reduction of 5 -15%):
0.4 – 0.8% by weight of cementitious (400 - 800 ml/100kg cementitious)
.
For maximum water reduction:
0.8 - 1.5 % by weight of cementitious (800 - 1500 ml/100kg cementitious)


SikaPlast®-220 VX can delay the set of concrete when used at high dosages.

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