Product Data Sheet Show all documents

Sika® ViscoCrete®-8967

ULTRA HIGH RANGE WATER REDUCER WITH HARDENING ACCELERATION EFFECT CONCRETE ADMIXTURE

Sika® ViscoCrete®-8967 is a 3rd generation polymer based high performance superplasticizer with hardening acceleration effect for concrete.
Sika® ViscoCrete®-8967 meets requrement of ASTM C494 type F

Sika® ViscoCrete®-8967 combines different modes of actions. By adsorption on the surface of the fines and keeping them apart while the hydration is in progress, Sika® ViscoCrete®-8967 effects the following concrete properties:
  • Extremely high water reduction (enhanced impermeability & strength of concrete produced)
  • Faster development of early strength. Can reduce the time of steam curing process for getting early strength
  • Workability can be maintained up to 90 minutes (depending on cement type, temperature and mix design)
  • Improved creep and shrinkage resistance characteristics
Product Data Sheet Show all documents

Usage

Sika® ViscoCrete®-8967 is mainly suitable for the manufacture of concrete in precast factories and other in-situ precast concrete elements.
Sika® ViscoCrete®-8967 is used for the following types of concrete:
  • High early strength precast concrete elements
  • Concrete with extreme water reduction.
  • Soft consistency concrete with extended working time, suitable for sheet pile, spun pile and high strength concrete pipe
 

Advantages

Sika® ViscoCrete®-8967 combines different modes of actions. By adsorption on the surface of the fines and keeping them apart while the hydration is in progress, Sika® ViscoCrete®-8967 effects the following concrete properties:
  • Extremely high water reduction (enhanced impermeability & strength of concrete produced)
  • Faster development of early strength. Can reduce the time of steam curing process for getting early strength
  • Workability can be maintained up to 90 minutes (depending on cement type, temperature and mix design)
  • Improved creep and shrinkage resistance characteristics

Packaging

200/1000 litres

Colour

Liquid/ brownish colour

Product Details

Product Information

Chemical base

Modified Polycarboxylate in water

Shelf life

12 months if stored properly in original unopened packaging.

Storage conditions

Stored in dry conditions, protected from direct sunlight and at temperatures between +5 °C and +30 °C

Density

1.085 – 1.115 kg/L
(at 20°C)

pH-Value

3.50 – 5.50
(at 25°C)

 
Technical Information

Concreting Guidance

Concrete placing: With the use of Sika® ViscoCrete®-8967, concrete of highest quality is being produced, however state of the art concrete technology, such as mixing, placing vibrating and curing must be respected and applied
Curing: Effective measures for concrete curing must be followed

Specific Advice

Sika® ViscoCrete®-8967 is added to the gauging water prior to its addition to the dry mix or added separately to the wetted concrete mix.
For optimum utilization of the ultra-high range water reducer we recommend a minimum wet mixing time of 60 seconds.
When adding the balance of the batching water to adjust concrete consistency this should be done after a minimum of 2/3 of the wet mixing time to avoid surplus water in the concrete.

Application

Application Information

Compatibility

Sika® ViscoCrete®-8967 may be combined with all Sikament, Sika® Aer, Sika®Pump, Sikacrete® PP1 products, but must be added separately to the mix and not pre-mixed prior its addition
Sika® ViscoCrete®-8967 is compatible with all Portland Cement types

Restrictions

Overdosing will result in increased workability and setting time of the Concrete, however, provided that curing is effective, ultimate concrete strength and properties will not be affected
Accurate dispensing equipment can be supplied by Sika Limited (Vietnam)
Use an appropriate concrete mixer and do not mix by hand.
Trial mixes are recommended to establish exact dosage rates required to suit individual requirements. Please contact Sika Technical Department for further assistance.
Consumption

Recommended Dosage

0.5 – 2.0 ltr per 100 kg of cement/binder
Typical dosage: 0.7 – 1.2 ltr per 100 kg of cement/binder

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