Product Data Sheet Show all documents

SikaFume®-50 S (GB)

Silica Fume Slurry Admixture for High Performance Concrete

SikaFume®-50 S (GB) is a modified concrete additive in liquid form based on Sika® silica fume / microsilica technology. It is a formulated blend of highly reactive pozzolanic materials and stabilisers designed to produce high quality concrete. SikaFume®-50 S (GB) is particularly suitable for chemical resistance, exposure to aggressive atmospheres, abrasion and high strength mixes. It should always be used in conjunction with a superplasticiser from the Sika range, or equivalent, subject to trials.

SikaFume®-50 S (GB) improves properties of the fresh concrete, such as cohesion, bond and water efficiency. In hardened concretethe highly active pozzolanic material reacts with the free lime produced by the hydration of the cement to improve the strength, density and durability of the concrete.  SikaFume®-50 S (GB) enhances the following characteristics:
  • Cohesion
  • Early and final strength
  • Impermeability to liquids and gases
  • Chloride, sulfate and acid resistance
  • Resistance to alkali-silica reaction in aggregates
  • Resistance to freeze/thaw cycles and abrasion
Product Data Sheet Show all documents

Usage

Typical applications include:
  • Concrete subject to heavy traffic or wear and tear
  • Concrete in aggressive chemical environements
  • Sprayed concrete
  • Concrete exposed to air pollution (urban and industrial areas)
 

Advantages

SikaFume®-50 S (GB) improves properties of the fresh concrete, such as cohesion, bond and water efficiency. In hardened concretethe highly active pozzolanic material reacts with the free lime produced by the hydration of the cement to improve the strength, density and durability of the concrete.  SikaFume®-50 S (GB) enhances the following characteristics:
  • Cohesion
  • Early and final strength
  • Impermeability to liquids and gases
  • Chloride, sulfate and acid resistance
  • Resistance to alkali-silica reaction in aggregates
  • Resistance to freeze/thaw cycles and abrasion

Packaging

SikaFume®-50 S (GB) is supplied in 1000 litre IBC's and in bulk tanker

Colour

Grey slurry

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

SikaFume®-50 S (GB) conforms to the requirements of BS EN 13263-1:2005+A1:2009, Silica fume for concrete Class 1.

DoP 76670302, certified by Factory Production Control Body 0099 and provided with the CE mark.
Product Information

Shelf Life

Six months from date of delivery, given correct storage of material. Material must be fully stirred / agitated on a regular basis during use

Storage Conditions

Store in closed containers to prevent contamination, stir / agitate regularly and protect from frost. For best results refer to SikaFume®-50 S (GB) Storage and Dispensing Guide, available separately

Density

1.38 kg/L ± 0.02

Total Chloride Ion Content

<0.10 % w/w (typical, chloride free)

Equivalent Sodium Oxide

0.16 % w/w (typical alkali content)
System information

Compatibility

SikaFume®-50 S (GB) is compatible with other Sika admixtures or equivalent and trials are recommended to ascertain optimum dosage. Please contact Sika technical services for more information.
Technical Information

Concreting guidance

Concrete with SikaFume®-50 S (GB) will be subject to reduced bleed. As such, proper curing is essential with a product such as Sika® Antisol®.

Concrete Mix Design

SikaFume®-50 S (GB) will only enhance durability if a minimum cement content of 350 kg/m3 is used. The water/cement ratio should not exceed 0.45. If necessary, increased dosage of Sika superplasticisers can be added. In such cases trials should always be made before full scale production is commenced. SikaFume®-50 S (GB) is a slurry comprising 50% water by weight and the water content should be included in calculated concrete water/cement ratio.

Concrete Mixing Time

SikaFume®-50 S (GB) may require additional mixing time depending upon the efficiency of the mixer used.

Application

Application Information

Dispensing

SikaFume®-50 S (GB) should be added with the mixing water. Ensure no settlement of the SikaFume®-50 S (GB) has occurred during storage, thoroughly re-mix if required. Due to material density and solids content, specalist pumps are recommended for dispensing, contact your local Sika representative for additional information.

Compatibility

SikaFume®-50 S (GB) is compatible with all common cement types, contact Sika technical services for specific information.
Consumption

Recommended Dosage

The addition rate of SikaFume®-50 S (GB) is generally between 5 and 20% by weight of cement (total mass of slurry) equating to 2.5 - 10 % dosage of silica fume powder. Contact Sika technical services for detailed advice on the dosage requirements.

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