Product Data Sheet Show all documents

SikaPlast®-228

PCE BASED SUPERPLASTICIZING AND SET RETARDING CONCRETE ADMIXTURE

SikaPlast®-228 is a 3rd generation polymer based high performance superplasticizer for producing soft consistency concrete.
SikaPlast®-228 meets the requirements of ASTM C 494 Type D & G.
SikaPlast®-228 conforms to Type G when used at 0.8 - 1.0% dosage, depending on cement type used.

SikaPlast®-228 combines different modes of actions. By adsorption on the surface of the fines and keeping them apart while the hydration is in progress, SikaPlast®-228 effects the following concrete properties:
  • Long slump keeping and high water reduction;
  • High flowability (considerably reduced placing and compacting work);
  • Faster evolution of early strength development;
  • Workability can be maintained up to 3-6 hours (still depends on admixture dosage, cement type, temperature);
  • Improved creep and shrinkage resistance characteristics;
  • When used at higher dosages, SikaPlast®-228 can give extended working time.
SikaPlast®-228 contains neither chlorides nor other corrosion inducing substances and can therefore be used without any restrictions for reinforced concrete structures.
Product Data Sheet Show all documents

Usage

SikaPlast®-228 is mainly suitable for the manufacture of concrete for RMC plants and site batch concrete.
SikaPlast®-228 is used for the following types of concrete:
  • Bored piles;
  • Barrette foundations and diaphragm walls;
  • Ground and suspended slabs;
  • Columns and walls.
 

Advantages

SikaPlast®-228 combines different modes of actions. By adsorption on the surface of the fines and keeping them apart while the hydration is in progress, SikaPlast®-228 effects the following concrete properties:
  • Long slump keeping and high water reduction;
  • High flowability (considerably reduced placing and compacting work);
  • Faster evolution of early strength development;
  • Workability can be maintained up to 3-6 hours (still depends on admixture dosage, cement type, temperature);
  • Improved creep and shrinkage resistance characteristics;
  • When used at higher dosages, SikaPlast®-228 can give extended working time.
SikaPlast®-228 contains neither chlorides nor other corrosion inducing substances and can therefore be used without any restrictions for reinforced concrete structures.

Packaging

200 / 1000 L

Colour

Liquid / dark brown

Product Details

Product Information

Chemical base

Modified poly carboxylate 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

1.105–1.125 kg/l

(At 20 °C)
Technical Information

Concreting Guidance

Concrete placing: With the use of SikaPlast®-228, 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

SikaPlast®-228 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

SikaPlast®-228 may be combined with all Sikament, Sika® Aer, Sika®Pump, Sikacrete® PP-1 products, but must be added separately to the mix and not premixed prior its addition.
SikaPlast®-228 is compatible with all Portland cement types.
Consumption

Recommended Dosage

0.5–2 L per 100 kg of cement/binder
Typical 0.8–1.2 L per 100 kg of cement/binder

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