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SikaFume®

SikaFume®

Additive for Durable and High-Ultimate-Strength Concrete

SikaFume® is a concrete additive in powder form, it is highly effective condensed silica fume for the production of high performance concrete.

SikaFume® contains extremely fine latently reactive silicic dioxide.
The presence of this substance imparts greatly improved internal cohesion and water retention in the fresh concrete. The concrete becomes extremely pliable and pumpability is substantially improved. In the hardened concrete the latently reactive silica fume forms a chemical bond with the free lime (CaOH2). The additional formation of hydration products results in a significantly denser cement matrix.   With the use of SikaFume® the concrete will show the following properties:
  • High stability of green concrete
  • Highly increased durability
  • Excellent frost and de-icing salt resistance if an air entraining agent is used at the same time
  • Increased ultimate strengths
  • Increased abrasion resistance
  • Increased water tightness
  • Increased gas tightness
  • Reduced chloride penetration
SikaFume® does not contain any chlorides or other steel corrosion promoting substances, and can therefore be used without any restriction for reinforced and pre-stressed concrete construction.
Product Data Sheet Show all documents

Usage

SikaFume® is used in shotcrete, structural concrete, pre-cast concrete and other fields of concrete construction where high demands are imposed on the quality of fresh and hardened concrete.

Advantages

SikaFume® contains extremely fine latently reactive silicic dioxide.
The presence of this substance imparts greatly improved internal cohesion and water retention in the fresh concrete. The concrete becomes extremely pliable and pumpability is substantially improved. In the hardened concrete the latently reactive silica fume forms a chemical bond with the free lime (CaOH2). The additional formation of hydration products results in a significantly denser cement matrix.   With the use of SikaFume® the concrete will show the following properties:
  • High stability of green concrete
  • Highly increased durability
  • Excellent frost and de-icing salt resistance if an air entraining agent is used at the same time
  • Increased ultimate strengths
  • Increased abrasion resistance
  • Increased water tightness
  • Increased gas tightness
  • Reduced chloride penetration
SikaFume® does not contain any chlorides or other steel corrosion promoting substances, and can therefore be used without any restriction for reinforced and pre-stressed concrete construction.

Packaging

10kg/bag

pallets

Colour

grey powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

SikaFume® conforms to AS 3582.3 :2016

SikaFume® is an ATIC registered product
Product Information

Composition

A blend of latently reactive ingredients.

Shelf life

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

Storage conditions

Storage in a dry environment, not sensitive to frost.

Specific gravity

2.2 gr/cm3
Technical Information

Concreting guidance

The standard rules of good concreting practice, concerning production and placing, are to be followed.
Laboratory trials shall be carried out before concreting on site, especially when using a new mix design or producing new concrete components.
Fresh concrete must be cured properly and curing applied as early as possible.

Concrete mix design

When using SikaFume® a suitable mix design has to be taken into account and local material sources shall be tested.

If  technical assistance is required, please contact your local Sika Technical Representative.

 

Concrete mixing time

SikaFume® is added with the cement and aggregates at the batching plant before the gauging water. Optimum wet mixing time: 60 seconds.

Application

Consumption

Recommended dosage

5 - 10 % by weight of cement.

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