Sika® ViscoCrete® SKY 8632

Conforms to IS 9103 / ASTM C494 Type G

Aqueous solution of modified polycarboxylates

12 months from date of production

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +35 °C. Protect from direct sunlight and frost. Always refer to the packaging.

Frost: If frozen or if precipitation has occurred, the Product may be used after thawing slowly at room temperature and intensive mixing.

1.08 ± 0.01 at 25°C

≥ 6

The Product is compatible with all standard cement types. For use with other cements contact your local Sika technical service for information.

The Product can be combined and is recommended for use with other Sika products, such as:

• Sika® Retarder setting retarders

• SikaRapid® hardening accelerators

• Sika® Stabilizer workability improver, for example Sika® Stabilizer VMA series to modify viscosity

• SikaControl® durability and quality enhancer, for example SikaControl® AER series to improve frost and thaw resistance

• Sika® Separol® mould release agents

• Sika® Antisol® curing compounds

The Product is not compatible with admixtures from the Sikament® range.

Always conduct trials before combining different products.

Contact Sika Technical Services for additional information.

• Follow the standard rules of good concreting practice for both production and placement.

• Carry out laboratory trials before concreting on site, especially when using a new mix design or producing new concrete components.

• Carry out trials to confirm the flowability and workability of the concrete.

• Cure fresh concrete properly and apply curing as early as possible, particularly in hot, windy and dry conditions, as well as at low temperatures.

• Excessive water addition or overdosing may cause bleeding, segregation and extension of setting-times.

• Due allowance should be made for the effect of fluid concrete pressure on formwork, and stripping times should be monitored.

• The product ensures that the concrete remains workable for a certain period. Workability loss depends on the following aspects:

  - temperature,

  - type of cement,

  - nature of aggregates,

  - method of transport,

  - and initial workability.

• To achieve longer workability period please use a setting retarder from the Sika® Retarder series.

• 300ml to 1500ml per 100kg of cementitious material is normally recommended.

The dosage rates given above are for typical usages, they are not meant as absolute limits, as other dosages may be utilized in special cases according to specific job conditions.

Note: Preliminary laboratory trials are always recommended to determine the optimum consumption and injection parameters.

Contact Sika Technical Services for additional information.

The Product is a ready-to-use liquid that is added to the concrete during the mixing process. Optimal water reduction is obtained if the Product is dispensed into the concrete mix after the addition of 50–90 % of mixing water. Avoid adding the Product to dry materials.

The Product should not be pre-mixed with other admixtures. If other admixtures are to be used in concrete containing the Product they must be dispensed separately.

After adding the Product allow enough mixing time to secure a homogenous concrete. If necessary, continue mixing and add additional Product to obtain the required workability.