SGS White Micro Silica Fume 14m2/G For Shotcrete / Concrete
White Microsilica Silicafume for Refractories/Shotcrete/Concrete/Cement/Aggregates
1. White Micro Silica Fume Introduction
White silica fume is the by-product of high performance decorative concrete. The color of our white silica fume may vary from pure white to slighly off white. White Silica Fume improves the properties of both fresh and hardened concrete.
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
a. Dense castables
b. Improved flow
c. Hot strength
d. Strength during heat-up
e. Lower the ingress of movement of water or chemicals
4. Characteristics
1. High whiteness.
2. High purity and fluidity.
3. Excellent suspension performance.
4. Good reinforcement performance.
5. Package
Customerized.
6. Applications
The most important property is the permeability, Lower the ingress of movement of water or chemicals; lower the adverse reactions such as sulfate attack,
The reaction between silica fume and the calcium hydroxide, released as the cement hydrates, provides a dense impermeable pore structure.
The temperature of the white micro silica fume is 1800 degrees, higher than the ordinary micro silica fume, so in the refractory industry, white micro silicon powder is more popular.
Improve the mechanical performances of concrete.
The Silica fume reacts with the cement paste to form additional strong Calcium Silicate Hydrate (CSH) providing higher strength.
Silica fume reduces bleeding and enhances the cement paste bond to the aggregates. Thanks to its pozzolanic effect (reaction with Ca(OH)2 ), and therefore to the strength improvement.
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