Product Data Sheet Show all documents

Sika® ViscoCrete®-203 SC

HWR- HIGH RANGE WATER REDUCER

Sika® ViscoCrete®-203 SC is a third generation superplasticiser for concrete and mortar with enhanced workability retention. It meets the requirements
for high range water reducing admixture (HWR) according to AS1478.1-2000.

Sika® ViscoCrete®-203 SC is an effective, user friendly superplasticiser which acts through several different mechanisms including
surface adsorption and sterical effects separating the cementitious binder particles.
The following advantageous properties are achieved:
  • High water reduction, resulting in high density, high strength and reduced permeability
  • Extended slump life to meet the needs of tunnelling and mining shotcrete
  • Superior plasticising effect, resulting in improved flow, placing and compaction characteristics
  • Reduced shrinkage during curing and reduced creep when hardened
  • Sika® ViscoCrete®-203 SC does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced and pre-stressed concrete structures
Product Data Sheet Show all documents

Usage

Sika® ViscoCrete®-203 SC is especially suitable for concrete mixes with extended transportation time and
extended workability requirements, high water reduction and improved flow characteristics.
Sika® ViscoCrete®-203 SC is mainly used for the following applications:
  • Shotcrete base mixtures (wet system)
  • High performance concrete
  • Concrete in hot weather and with extended transportation and workability requirements
  • High durability concrete
 

Advantages

Sika® ViscoCrete®-203 SC is an effective, user friendly superplasticiser which acts through several different mechanisms including
surface adsorption and sterical effects separating the cementitious binder particles.
The following advantageous properties are achieved:
  • High water reduction, resulting in high density, high strength and reduced permeability
  • Extended slump life to meet the needs of tunnelling and mining shotcrete
  • Superior plasticising effect, resulting in improved flow, placing and compaction characteristics
  • Reduced shrinkage during curing and reduced creep when hardened
  • Sika® ViscoCrete®-203 SC does not contain chlorides or any other ingredients which promote the corrosion of steel. It is therefore suitable for use in reinforced and pre-stressed concrete structures

Packaging

Bulk Deliveries

1000 litre IBC
10 litre pail

Colour

Light brownish liquid

Product Details

Product Information

Composition

Modified polycarboxylates in water

Shelf life

12 months from date of production if stored properly in undamaged unopened,original sealed packaging.

Storage conditions

In dry conditions at temperatures between +5°C and +35°C. Protect from direct sunlight.
 

Density

1.07 kg/L

Application

Application Information

Dispensing

Sika® ViscoCrete®-203 SC is added to the gauging water or added with it into the concrete mixer.
To take advantage of the high water reduction, a wet mixing time, which is depending on the mixing conditions and mixer performance, of at least one minute per cubic metre after the admixture addition is recommended.
Sika® ViscoCrete®-203 SC shall not be added to dry cement.

Compatibility

Sika® ViscoCrete®-203 SC can be used in conjunction with all the concrete admixtures manufactured
by Sika with the exclusion of Sikament ® NN.
All admixtures must be added separately.
For additional information, please contact Sika technical personnel.
Consumption

Recommended dosage

Recommended dosage for concrete and shotcrete:
250 ml to 2000 ml per 100 kg of total cementitious material.
Optimum dosage should be determined by site trials.

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