Microsilica application and presentation

Silica (also known as silica fume, silica fume, silica fume. English name: Silica Fume or Microsilica), tied smelting ferrosilicon or silicon, through the flue exhaust steam oxidation of silicon, specially designed dust collection collected resulting amorphous, powdered silica (SiO2).
Silica main physical and chemical indicators: SiO283-96%; LOI 1.5-6.0%, with an average particle size of 0.15-0.335um;
Specific surface area of ??15-22m2 / g; pozzolanic activity index of> 86%; 45um sieve <5%, the natural packing density 180-240kg/m3, encrypt bulk density 480-650kg/m3, mineralogical structure of amorphous spherical particles.
I. microsilica features:
1, can improve the strength of concrete, and the pumping performance.
2, impact resistant ability to enhance and improve the impermeability capacity, increasing density.
3, enhance cohesiveness, easily separated, reducing loss of resilience.
4, early strength performance improvement. Frost resistance increased.
Second, the scope of application of silica and benefits:
Silica cement filler, where the cement works to apply, can improve the concrete strength, density, wear resistance, erosion performance, significantly improved the pumping performance, widely used in the marine, water harbor pier, subways, tunnels , bridges, high-rise construction, chemical industry and so on.
1, used in concrete. Grouting material:
Such as: special powder materials, filling materials, high-strength grade concrete C100, and deploy high-performance anti-corrosive marine concrete.
Role: to improve the early strength of concrete, reduce structural section, permeability strong, accelerated construction schedule.
2, for the floor:
Such as: wear-resistant flooring, epoxy floor, gravity floor.
Function: fireproof, anti-static, anti-corrosion, cracking, wear, enhance, save about 30% of the epoxy resin.
3, for the refractory material:
Such as: fire retardant paint, ultra-high temperature, high temperature, thermal insulation material unshaped castable.
Effects: increased strength, abrasion resistance and durability to prolong life, reduce water consumption, improve production efficiency, improve quality, increase density, increase the heat shock degrees.
4, for insulation mortar, dry mortar, grout and other materials.
Effects: increased tensile strength, density, corrosion, cracking, thermal conductivity control, cost savings, and has good workability.
5, for the waterproof material, waterproof coatings:
Role: to improve impermeability, interstitial penetration ability, strong density.
6, used like rubber, plastics, ceramics, chemical industry: as a filler, can replace fumed carbon black.
Role: to reduce costs, you can add fluorescent brighteners.