350Kg/M3 Micro Silica Fume 85% 0.18 Al2O3 For Concrete Admixture
85% Undensified Microsilica Silicafume for Insulation Materials, Large Concrete Projects, Mortar, Pipe, Piles etc.
1. Micro Silica Fume Introduction
Micro silica fume (scientific name "silica fume," Micro-silica or Silica Fume), in the smelting of ferrosilicon and industrialsilicon, silicon through the flue gas emitted by steam oxidation, the specially designed filter collected the amorphous powder like silica (SiO 2).Microsilica fume average 0.1-0.15 μ m in diameter, the size of several cement average 1.0%. Surface area is the 15-27 m 2 / g, with strong surface activity.
2. Specifications
| Analysis | Result | ||||
| SF85 | SF88 | SF90 | SF92 | SF94 | |
| SiO2(%) | 86.12 | 88.6 | 91.5 | 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. Characteristics
1)Fine granularity.
2)Narrow particle distribution.
3)Large surface area.
4)Excellent suspension performance.
5. Applications
Mainly used in unshaped refractory materials, construction, ceramics, pigments and chemical industrial, etc.
Used in the construction of cement concrete: which can reduce the dosage of cement concrete, eliminating material segregation and improve the concrete strength, enhance the wear resistance and durability, improve corrosion of steel, etc.
Used in monolithic refractories: which can effectively reduce the water addition, good thixotropy, and low temperature combination effect, is the ideal combination of agent, binder, additives and performance improvement of blending.
Used in the unsteady casting of ladle: which can be used for high temperature and steel water insulation.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.