Densified Micro Silica Fume 90%
SiO2: 85% to 98%
L.O.I: 3.5% Max
PAI: 110% Min
Bulk Density: 300-650KG/M3
Silica Fume/Micro Silica
1. Introduction:
Silica fume, also called as micro silica, silica dust, is a by-product of producing silicon metal or ferrosilicon alloys. Silica fume consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2). The individual particles are extremely small, approximately 1/100th the size of an average cement particle. Because of its fine particles, large surface area, and the high SiO2 content, silica fume is a very reactive pozzolan when used in concrete.
2. Application in concrete:
Silica fume is widely used in concrete field especially high – performance project, such as bridge , airport, hydropower station and so on.
(1)Enhance the mechanical properties of concrete
The most important character for concrete – high strength and early strength has been used in substructures of high-performance concrete.
(2)Improve the durability of concrete
Significant improvements can be seen in the permeability resistance, abrasion resistance, chemical resistance and anti-freezing of concrete.
(3)Enhance constructability
Contractors can take advantage of the properties of silica-fume concrete to expedite projects or to achieve properties that might otherwise be impossible to achieve.
3. Specification-Building Grade
Analysis | Result | Result | Result | Result | Result |
SF85 | SF88 | SF90 | SF92 | SF93 | |
SiO2(%)(min.) | 85.05 | 88.05 | 90.05 | 92.05 | 93.05 |
Fe2O3(%) | 0.78 | 0.44 | 0.21 | 0.25 | 0.20 |
Al2O3(%) | 0.29 | 0.20 | 0.21 | 0.25 | 0.20 |
CaO(%) | 0.39 | 0.31 | 0.31 | 0.36 | 0.21 |
K2O+ Na2O (%) | 0.29 | 0.24 | 0.22 | 0.20 | 0.20 |
Moisture(%) | 3.05 | 2.55 | 2.05 | 2.05 | 1.03 |
Loss on Ignition (L.O.I) @975OC(%) | 3.38 | 3.10 | 2.38 | 1.75 | 1.50 |
Bulk Density (kg/m³) | 500-700 | 500-700 | 500-700 | 500-700 | 500-700 |
4.Packing: 900kg/bag or as per customer’s request
5. Capacity: 18-20 MT into one 20 FCL.
6. Delivery Time: 2 weeks after payment.
7. Contact Information
Fiona Fan
Tel: 86-592-2612161
Fax: 86-592-2612133
