Product Data Sheet Show all documents

SikaFume® DS

Densified Silica Fume

SikaFume® DS is a concrete additive in powder form based on silica fume technology. It is used as a high effective additive for the production of high quality concrete.

SikaFume® DS contains extremely fine (0.15µm) latently reactive silicon dioxide. The presence of this substance gives following advantages:
  • Improved internal cohesion
  • Water retention and increased density when set
  • Improved pumping properties
  • Improved durability
  • Improved water tightness
  • Improved surface finish
  • Increased resistance to abrasion
  • Reduced chloride diffusion
  • Improved ultimate strength
SikaFume® DS contains no chloride or other potentially corrosive substances.
Product Data Sheet Show all documents

Usage

SikaFume® DS is used in :
  • High performance concrete
  • Structural concrete
  • Precast concrete
  • Shotcrete applications
And other fields of concrete construction where great demands are required on the durability and quality of fresh and hardened concrete.  

Advantages

SikaFume® DS contains extremely fine (0.15µm) latently reactive silicon dioxide. The presence of this substance gives following advantages:
  • Improved internal cohesion
  • Water retention and increased density when set
  • Improved pumping properties
  • Improved durability
  • Improved water tightness
  • Improved surface finish
  • Increased resistance to abrasion
  • Reduced chloride diffusion
  • Improved ultimate strength
SikaFume® DS contains no chloride or other potentially corrosive substances.

Packaging

20 kg bag

Colour

Grey to dark grey powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

 IS 15388, ASTM C1240
Product Information

Chemical Base

SiO2 content

> 85%

Alkalies as Na2O

< 1.5 %

Loss on ignition

< 4 %

Moisture content< 3 %
Specific surface area>15 m2 /gm

Shelf Life

24 months from date of production if stored properly in undamaged unopened, original sealed packaging.

Storage Conditions

Store in dry conditions at temperatures between +5°C and +40°C. Protect from direct sunlight and frost.

Bulk Density

> 500 kg/m3  Densified

Application

Application Information

Compatibility

Important: Always conduct trials before combining products in specific mixes and combinations.

Compatible with all types of cement and cementitious materials.

DISPENSING

In order to achieve proper dispersion of SikaFume® DS and to maximize the mix consistency and admixture performance it should be dispersed together with sand and aggregates. Then 70-80%of water to be added. The remaining water and admixture is added after all the cement has been dispensed.
Consumption

Recommended Dosage

3%-15% by weight of cement. The correct dosage for the required properties must be determined by preliminary testing. For optimum result in concrete, always use in conjunction with a superplasticizer or retarder.

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