Product Data Sheet Show all documents

SikaPlast®-2 S

Mid-range water reducing concrete admixture

SikaPlast®-2 S is a mid-range water reducer specifically formulated to produce concrete with improved water reduction and extended slump life.

Mix designs incorporating SikaPlast®-2 S can show economies through cement reduction, whilst still improving the plastic and hardened properties of the concrete. Batching water is reduced without loss of workability. Typical performance advantages are:
  • Increased strength and improved long term durability properties
  • Reduced dimensions of long term shrinkage and creep
  • Improved surface finish
  • Placing in difficult situations is made easier
  • Improved characteristics of concrete with difficult and harsh aggregate or sands
Product Data Sheet Show all documents

Usage

  • SikaPlast®-2 S is used to produce workable concrete with a lower total water content, and should be considered wherever high quality concrete is required
  • SikaPlast®-2 S is ideal whenever the various hand­ling properties of concrete must be improved and where placing conditions are difficult
  • SikaPlast®-2 S is used with all grades of concrete.
 

Advantages

Mix designs incorporating SikaPlast®-2 S can show economies through cement reduction, whilst still improving the plastic and hardened properties of the concrete. Batching water is reduced without loss of workability. Typical performance advantages are:
  • Increased strength and improved long term durability properties
  • Reduced dimensions of long term shrinkage and creep
  • Improved surface finish
  • Placing in difficult situations is made easier
  • Improved characteristics of concrete with difficult and harsh aggregate or sands

Packaging

200 litres and bulk delivery

Colour

Green liquid

Product Details

Product Information

Chemical Base

Aqueous solution

Shelf Life

Twelve (12) months from date of manufacture when stored as stated.

Storage Conditions

Store in unopened, original containers, free from frost and at temperatures between +5°C and +35°C.

Specific gravity

~ 1.05

Total Chloride Ion Content

No added chlorides
Technical Information

Specific Advice

  • Air entrainment: May have slight increase, tests are recommended
  • Water reduction: Yes
  • Effect on setting time: Up to 600 ml/100 kg setting time is within 1 hour of control
  • Freezing point: -5°C
  • Suitability: All types of Portland cements, including sulphate resistant cement

Application

Application Information

Compatibility

Compatibility with other Sika Admixtures - yes, but add separately (do not pre-mix).

Dispensing

  • SikaPlast®-2 S is generally added to the initial batching water, prior to the addition of aggregates.
  • For best results delay the dosage into the water until the cement and air entraining admixtures have been added and initially mixed with water.
  • SikaPlast®-2 S may be added to the mixed concrete if required, however, further mixing should take place for at least five minutes.

Restrictions

  • As with all concrete, it is essential to protect mixes containing SikaPlast®-2 S from water evaporation during the crucial early age curing period. We recommend the use of Sika® Antisol curing membranes for this purpose. Refer to the Sika® Antisol product data sheet for further information
  • To avoid moisture evaporation from the concrete surface during the finishing period Sika recommends the use of Sika® Film (refer to Sika® Film product data sheet)
  • When using SikaPlast®-2 S in concrete containing air entraining admixtures, dosages of the latter may need to be adjusted to maintain the same target level of air entrainment.
  • For additional information, please contact your local Sika Representative
Consumption

Recommended Dosage

Dosage: 400 - 800 ml
Typical Dosage: 600 ml/100 kg
Trial mixes are recommended to establish exact dosage rates required to suit individual requirements. If assistance is required please contact the Sika Technical Department.

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