top of page
Sílica ativa coloidal Nanokem Novakem

Nanokem

Colloidal Activated Silica

NBR 13956/12

Nanokem Colloidal Activated Silica

Nanokem is composed of stabilized nanoparticles in colloidal form for special applications in civil construction and mining. It promotes increased durability in concrete due to its pozzolanic properties , and also acts as a nucleating agent in the cement hydration process.

Sílica ativa coloidal Nanokem

É um material com nano partículas de sílica presente na fase amorfa com diâmetro médio entre 5 e 10 nm (10.000 vezes mais fina que o cimento em média) e área específica entre 150 e 250 m²/g composto por partículas coloidais.

​

Sílica ativa coloidal: bombonas 50 L ou 200 L

Tamanho médio de particula: 1 a 5 nm

Liquido com teor de sólidos de 30%

Índice de atividade pozolânica com cimento Portland: > 105 (aos 7 dias)

Na2O: < 1,5%

Estabilidade: maior que 6 meses na embalagem original

Colloidal activated silica

Applications in concrete 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 Nanokem colloidal activated silica?

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

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

  • The need for special properties combined with the use of polycarboxylates from the Hyperkem ™ line;

  • 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 ;

  • Greater ease of incorporation into dosages.

bottom of page