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Sílica ativa em suspensão Novakem

Silikem

​Active Silica in Suspension

NBR 13956/12

Active Silica in Suspension Silikem

Silikem is composed of stabilized and dispersed active silica in the form of a suspension, used in special applications in civil construction and mining. It promotes increased durability in concrete due to its pozzolanic properties, and also acts as a substitute for Portland cement in some applications.

Sílica ativa em suspensão Novakem

Silikem is a liquid material composed of silica dispersed in an aqueous medium, with at least 85% silica present in the amorphous phase, an average diameter of less than 1 micron (100 times finer than cement on average), and a specific surface area between 15 and 30 m²/g, composed of spherical and regular particles. It meets the ASTM C 1240 or NBR 13.956/12 standards.

  • Activated silica in suspension: 200 L drums or 1,000 L containers.

  • Average particle size: 0.40 microns

  • Liquid with a solids content of 50%

  • Pozzolanic activity index with Portland cement: > 105 (at 7 days)

  • BET Specific Area: 15 to 30 m²/g

  • SiO2: > 85%

  • Na2O: < 1.5%

  • Stability: up to 7 days under proper storage conditions.

  • Loss on Ignition: < 6.0%

Silica activated in suspension Silikem

Concrete applications for improving durability or optimizing cement consumption:

  • Environments with restrictions on dust generation ;

  • All types of concrete with greater durability;

  • Foundations and piles;

  • Concrete in marine regions and aggressive environments;

  • High-performance concrete.

What are the advantages of using Silikem activated silica suspension?

Among the main advantages of using silica fume in concrete, the following stand out:

  • Locations where dosing silica powder is difficult or where dust formation is restricted;

  • Dosed in liquid form for easier control and incorporation into concrete ;

  • Due to its increased specific surface area, it can be used in small quantities for improved performance;

  • It improves mechanical properties in the hardened state, such as abrasion resistance, compression strength, and tensile strength ;

  • It reduces the permeability of the concrete microstructure, thus providing greater durability against attack from external agents and aggressive environments;

  • Reduces segregation and bleeding in concrete ;

  • High yield with less material waste ;

  • Greater ease of incorporation into dosages.

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