SikaFume

SikaFume is a new generation concrete additive in loosely agglomerated particles form based on silica fume technology. It is higly effective additive 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.

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.

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.