Product Data Sheet Safety Data Sheet Show all documents

SikaPaver® HC-2 ZA

High performance compaction aid for semi-dry / no-slump concrete products

SikaPaver® HC-2 ZA is a high performance compaction aid for semi-dry/no-slump concrete based on the Sika® ViscoCrete® technology.
This innovative admixture technology has been specifically developed for use in low cement content semi-dry/no-slump mixes where good surface/flanks finish and high early strength are required.

SikaPaver® HC-2 ZA offers substantial benefits to the producer of semi-dry/no-slump concrete products:
  • Efficient dispersion and distribution of cement, additives and pigments
  • Improved mould filling
  • Optimised compaction process
  • Minimized friction between the mould and the concrete
  • Reduced adhesion/stickiness between top layer concrete and pressing head/tamper
  • Increased “green” strength after immediate de-moulding
  • Less variation in densities and strengths across the area of the mould
  • More economic concrete mix designs
  • Less customer returns and second grade products
SikaPaver® HC-2 ZA allows for the following advantages in the finished concrete products:
  • Closer textured, smoother and more uniform surfaces
  • Consistent product quality
  • Minimized damage due to early handling
  • Enhanced early and ultimate compressive and tensile strengths
  • Increased freeze-thaw resistance
  • Improved durability and life expectancy
 
Product Data Sheet Safety Data Sheet Show all documents

Usage

SikaPaver® HC-2 ZA is used for all types of semi-dry/no-slump concrete which is generally used in the manufacture of machine-made concrete products associated with instant de-moulding such as:
  • Block Paving (grey / coloured)
  • Paving flags
  • Kerbstones
  • Edgings and other items for garden and landscape design
  • Building blocks and bricks
  • Concrete pipes and manholes
  • Semi-dry hollow core slabs
 

Advantages

SikaPaver® HC-2 ZA offers substantial benefits to the producer of semi-dry/no-slump concrete products:
  • Efficient dispersion and distribution of cement, additives and pigments
  • Improved mould filling
  • Optimised compaction process
  • Minimized friction between the mould and the concrete
  • Reduced adhesion/stickiness between top layer concrete and pressing head/tamper
  • Increased “green” strength after immediate de-moulding
  • Less variation in densities and strengths across the area of the mould
  • More economic concrete mix designs
  • Less customer returns and second grade products
SikaPaver® HC-2 ZA allows for the following advantages in the finished concrete products:
  • Closer textured, smoother and more uniform surfaces
  • Consistent product quality
  • Minimized damage due to early handling
  • Enhanced early and ultimate compressive and tensile strengths
  • Increased freeze-thaw resistance
  • Improved durability and life expectancy
 

Packaging

Drum: 200 ltr
IBC: 1000 ltr

Colour

Clear liquid

Product Details

Product Information

Chemical Base

Aqueous polymers solution

Shelf Life

12 months from date of production

Storage Conditions

Store properly in original, unopened packaging (drums, containers). Protect from frost, direct sunlight and
contamination.
When it is delivered in bulk, the tanks and equipment used must be free of residues from previous deliveries.

Density

1.01 + 0.02 kg/dm³ (at +20°C)

pH-Value

4 +/- 1
Technical Information

Concrete Mixing Time

A mixing time of at least 30 seconds is essential, although the actual mixing time after adding the admixture depends on the individual circumstances and should be determined by trials

Application

Application Information

Dispensing

SikaPaver® HC-2 ZA shall be added with the mixing water or introduced at the end of the mixing process.

Restrictions

SikaPaver® HC-2 ZA must not be used for wet cast concrete as this could result in excessive air entrainment and subsequent loss of strength.
Before use suitability tests must be performed.

 
Consumption

Recommended Dosage

0.2% - 0.6% of cement weight

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