Product Data Sheet Show all documents

Sika® Plastiment® SD-1

Compaction aid for semi-dry concrete

Sika® Plastiment® SD-1 is a liquid admixture developed for semi-dry concrete.

Sika® Plastiment® SD-1 offers substantial benefits to the producer of semi-dry concrete products:
  • Efficient dispersion and distribution of cement, additives and pigments
  • Air entrainment
  • Improved movement of the concrete through the machine (faster mould filling)
  • Optimised compaction with shorter pressing time and increased throughput (shorter production cycle)
  • Increased “green” strength on immediate de-moulding [ keeps the shape of freshly de-moulded semi-dry concrete products because it prevents slumping after de-moulding ]
  • More economic concrete mix designs
  • Create superior products
  • Closer textured and more uniform surfaces
  • Consistent product quality due to a homogenous concrete mix
  • Increased density
  • Less variation in densities and strengths across the area of the mould (constant spread of density & strength over the pallet)
  • Increased freeze-thaw resistance
  • Less customer returns and second grade products
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Product Data Sheet Show all documents

Usage

Sika® Plastiment® SD-1 is used for producing optimised semi-dry concrete with a very low moisture content. Semi-dry concrete production is generally used in the manufacture of machine-made concrete products associated with instant de-moulding. Sika® Plastiment® SD-1 is mainly used for the following applications:
  • Block paving
  • Kerbstones
  • Edgings and other items for garden and landscape design
  • Building blocks and bricks
 

Advantages

Sika® Plastiment® SD-1 offers substantial benefits to the producer of semi-dry concrete products:
  • Efficient dispersion and distribution of cement, additives and pigments
  • Air entrainment
  • Improved movement of the concrete through the machine (faster mould filling)
  • Optimised compaction with shorter pressing time and increased throughput (shorter production cycle)
  • Increased “green” strength on immediate de-moulding [ keeps the shape of freshly de-moulded semi-dry concrete products because it prevents slumping after de-moulding ]
  • More economic concrete mix designs
  • Create superior products
  • Closer textured and more uniform surfaces
  • Consistent product quality due to a homogenous concrete mix
  • Increased density
  • Less variation in densities and strengths across the area of the mould (constant spread of density & strength over the pallet)
  • Increased freeze-thaw resistance
  • Less customer returns and second grade products

Packaging

1000 litre IBC

Colour

Brown Liquid

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS 8443
Product Information

Chemical Base

Lignosulphonate and surfactant blend

Shelf Life

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

Storage Conditions

Store in dry conditions at temperatures between +5°C and +25°C. Protect from direct sunlight and frost.

Density

1.08 Kg/Litre

pH-Value

5.0 + 1.0

Total Chloride Ion Content

<0.1%

Application

Application Information

Compatibility

Sika® Plastiment® SD-1 may be combined with many other Sika products.

Important: Always conduct trials before combining products in specific mixes and contact our Technical Service Department for information and advice about any specific combinations.

Dispensing

Sika® Plastiment® SD-1 is added to the gauging water or added with it into the concrete mixer.

In general 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.
Consumption

Recommended Dosage

0.2 – 1.0% by weight of cement
Application steps

APPLICATION INSTRUCTIONS

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

Production trials shall be carried out before concreting, especially when using a new mix design or producing new concrete components.

CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be removed mechanically.
 

NOTES ON APPLICATION / LIMITATIONS

When using Sika® Plastiment® SD-1 a suitable mix design has to be taken into account and local material sources shall be trialled.
Sika® Plastiment® SD-1 shall not be added to dry cement.
Sika® Plastiment® SD-1 can be added with the mixing water or introduced at the end of the mixing process.
Sika® Plastiment® SD-1 must not be used for wet cast concrete as this could result in excessive air entrainment and subsequent loss of strength.
Excessive water addition or overdosing may cause retardation.
Support from our Technical Service Department is recommended.

Frost:

If frozen and / or if precipitation has occurred, Sika® Plastiment® SD-1 may be used after thawing slowly at room temperature followed by intensive remixing.

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