Product Data Sheet Show all documents

Sika® UCS

ANTI-WASHOUT ADMIXTURE FOR UNDERWATER CONCRETE AND MORTAR

Sika® UCS is a powdered underwater/anti-washout admixture. Sika® UCS is made for the purpose to increase the cohesion of cementitious component in water. Sika® UCS is enable to protect concrete from washout during pass through the water.

Sika® UCS is composed of high-molecular compound and is enable to contribute integrity of concrete placed underwater. Sika® UCS need to be in harmony with polycarboxylate based admixtures in order to decrease mixing water.
  • Without segregation due to increase by strong cohesion.
  • Not need to vibrate for compacting by extended workability.
  • Minimizing water pollution because of superior anti-washout properties.
Product Data Sheet Show all documents

Usage

Sika® UCS is mainly used for the following applications.
  • Underwater foundation of bridge
  • Breakwaters and near sea construction
  • Impossible site of tampping
  • Marine construction
 

Advantages

Sika® UCS is composed of high-molecular compound and is enable to contribute integrity of concrete placed underwater. Sika® UCS need to be in harmony with polycarboxylate based admixtures in order to decrease mixing water.
  • Without segregation due to increase by strong cohesion.
  • Not need to vibrate for compacting by extended workability.
  • Minimizing water pollution because of superior anti-washout properties.

Packaging

4 kg/pack, 3 kg/bag (12 kg total)

Colour

White powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of KCI AD 102
Product Information

Chemical Base

Blended powder of viscosity modifiers and special additives

Shelf Life

12 months from date of production if stored properly in unopened

packaging.

Storage Conditions

Store in dry condition at temperatures between 5oC to 35oC. Protect from direct sunlight.

Density

Around 0.5Kg/Liter
System information

Compatibility

Do not use the naphthalenesulfonic acid for the purpose of water's reduction.

Recommended admixtures should be polycarbonate based

(Sika® ViscoCrete® 5)
Technical Information

Concreting Guidance

Concrete with Sika® UCS is flowable for reasons of viscosity.

Specific Advice

Do not expose concrete to continuous flow of water while hardening.

Concrete Mixing Time

Dry mix for 30sec before addition of water.

Application

Application Information

Compatibility

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® UCS should not be added to the mixing water. it can usually be added at the batching plant with the aggregate for dispersion instead.
  • After dry mix, A wet mixing time is depending on the mixing conditions and mixer performance, of at least 90 seconds is recommended.

For calculation of the proper water amount, the exact dosage of the Sika® UCS/superplasticizer and the final demanded concrete properties have to be taken into account.

In all cases before application, suitability tests must be performed.
Consumption

Recommended Dosage

0.5 - 1.5 % by weight of total cementitious binder

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