Sika® UCS Pak - Underwater Admixture
Verified by manufacturer 3 months ago
Underwater / anti-washout admixture.
Application
Sika® UCS Pak allows for the production and the improvement of concrete to be placed underwater and avoid binder washout.
Sika® UCS Pak is mainly used for the following applications:
- A wide range of applications where concrete is to be placed underwater.
- Marine construction.
- Avoiding static segregation in concrete piles
Description
Sika® UCS Pak is a powdered underwater/anti-washout admixture formulated to increase the cohesion of concrete to enable significant reductions in washout. Sika® UCS Pak is packaged in water soluble bags to enable ease of addition and handling.
Should be used in combination with a Sika® HRWR/Super plasticizer.
Features and benefits:
- Strong increase in cohesion.
- Extended workability.
- Superior anti-washout properties.
- Provides improved integrity of concrete placed underwater.
- Less segregation and bleed.
- Packaged in water soluble bags for easy dispensing.
General information
Color | Cream Guidance for specification option: Pale Buff. |
Material | Other Guidance for specification option: Powder blend of plasticizers and viscosity modifiers. |
Shape | Formless |
Uniclass | |
CAWS | E11/435 Proprietary admixture E10/418 Proprietary admixture |
Specification data - Waterproofing mortar admixtures
General requirements | Admixtures generally. |
Performance requirements | To BS 8443. |
Dosage (% by weight) | 4—5 bags/m³ (0.400 kg). |
Appearance | Pale buff, powder. |
Density | ~0.50 kg/L. |
Shelf life | 12 months. |
Chloride Ion content | <0.1% w/w. |
Sustainability data
Country of product manufacture | United Kingdom |
Case studies
River Eden, Carlisle - Underwater Concrete