Product Data Sheet Show all documents

Sika® ViscoCrete®-1681

Hardening accelerator, high range water reducing & superplasticizing admixture

Sika® ViscoCrete®-1681 is a Hardening accelerator, high range water reducing & superplasticizing admixture for Concrete & Mortar utilizing Sika’s ‘ViscoCrete®’ polycarboxylate polymer technology ( 3rd Generation ) .

  1. High water reduction, resulting in higher density, higher strength and reduced permeability.
  2. Easier and faster pumping of concrete.
  3. Increased workability and easier placeability.
  4. Improves finishability and surface appearance of concrete.
  5. Allows contractors to finish the concrete early.
  6. Increased concrete durability and uniformity.
  7. Reduced shrinkage and cracking.
  8. Reduced rate of carbonation of the Concrete.
Product Data Sheet Show all documents

Usage

  1. Very High Early Strength Concrete (VHESC).
  2. Self Compacted Concrete (SCC).
  3. Wet Precast Concrete.
  4. Pumped Concrete.
 

Advantages

  1. High water reduction, resulting in higher density, higher strength and reduced permeability.
  2. Easier and faster pumping of concrete.
  3. Increased workability and easier placeability.
  4. Improves finishability and surface appearance of concrete.
  5. Allows contractors to finish the concrete early.
  6. Increased concrete durability and uniformity.
  7. Reduced shrinkage and cracking.
  8. Reduced rate of carbonation of the Concrete.

Packaging

1000 Kgs IBC

20 kg Pail

Colour

Light brownish

Product Details

Product Information

Composition

Aqueous solution of modified polycarboxylates

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. It requires recirculation when held in storage for extended periods.

Specific gravity

1.070 ± ( 0.02 )  g/cm3 

pH-Value

 4.5 - 6.5

 
Technical Information

Concreting guidance

The standard rules of good concreting practice, concerning production and placing, are to be followed. Laboratory trials shall be carried out before concreting on site, especially when using a new mix design or producing new concrete components. Fresh concrete must be cured properly and curing applied as early as possible.

Application

Application Information

Dispensing

Sika® ViscoCrete®-1681 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 3 mins. per cubic meter after the admixture addition is recommended. Sika® ViscoCrete®-1681 shall not be added to dry cement.

Compatibility

Sika® ViscoCrete®-1681 can be used in conjunction with :

1. Sika®Aer

2. Sika ViscoFlow®

3. Sika® ViscoCrete®

4. SikaPlast®

6. SikaFiber®

7. SikaRapid®

All admixtures must be added separately. Trials are always recommended before combining products . For additional information, please contact Sika technical personnel.
Consumption

Recommended dosage

( 0.5 % - 2 % ) by weight of total cementitious materials.

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