Densified Micro Silica Fume 94.3% Grey For Large Concrete Engineering
94% Densified Micro Silica Fume for Large Concrete Engineering, Mortar, Floor, Pipe Pile
1. Micro Silica Fume Introduction
Silica fume is a co-product from the production of silicon or ferrosilicon metal. Silica fume, also known as microsilica, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product during silicon and ferrosilicon alloy production.
2. Specifications
| Analysis | Result | ||||
| SF85 | SF88 | SF90 | SF92 | SF94 | |
| SiO2(%) | 86.14 | 88.52 | 91.51 | 93.66 | 96.98 |
| Fe2O3(%) | 0.7 | 0.65 | 0.35 | 0.2 | 0.2 |
| Al2O3(%) | 0.38 | 0.26 | 0.22 | 0.2 | 0.2 |
| CaO+MgO(%) | 0.4 | 0.36 | 0.36 | 0.3 | 0.3 |
| K2O+Na2O(%) | 0.3 | 0.28 | 0.2 | 0.2 | 0.2 |
| Moisture(%) | 1.77 | 1.66 | 1.66 | 0.82 | 0.91 |
| Loss on lgnition(L.O.I)@975℃ (%) | 3.6 | 2.92 | 2.07 | 1.92 | 1.91 |
3. General advantages
● Lowers concrete permeability.
● Significantly increases concrete durability.
● Increases ultimate strength gain.
● Beneficial in all types of high strength concrete applications.
● Improves bond strength to steel.
● Significantly reduces alkali-silica reactivity.
● Provides excellent resistance to sulfate or seawater attack.
● Reduces steel corrosion.
● Improves freeze/ thaw durability of concrete.
4. Package
25kg/plastic bag, 950kg/jumbo bag,1000kg/jumbo bag.
5. Applications
(1). Silica Fume in Concrete:
● Increacing strength
● Increasing density
● Frost resistance
● Early strength
● Abrasion resistance performance, anti-cavitations
(2). Silica Fume In Cement
● Strengthens the fibre cement product.
● Increases the packing density of the cement matrix.
● Thereby enhance the durability of the fibre cement product.
● Enhances the plasticity of the fresh mix.
● Increases the bending strength of fibre reinforced cement
(3). Silica Fume Is Used In Refractory
● Instead of aluminum oxide to be used as refractory material
● As additive in amorphous and shappely refractory products, greatly improved products strength and high temperature performance.
● As casting combination accelerators in integral teeming ladle
● Agglomerating agent, agglutinant, accelerator and additive in other refractory products..
(4). Other Applications For Silica Fume:
● Rubber industry
● Anti-caking industry
● Pellet binder
● Waterglass industry
● Shotcrete
● Self-Compacting Concrete
● Mining & Tunnelling.
● High rise buildings.
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