85% Undensified Silica Fume
85% Undensified Silica Fume
- SiO₂: >85%
- Color: Grey
- PH Value: 6~8
- Bulk density: 300~350kg/m3, 550~650kg/m3, Above 700kg/m3
- Packages:1000kg plastic woven bags, 10kg soluble paper bags, 20kg soluble paper bags, 25kg plastic woven bags, 500kg plastic woven bags, 600kg plastic woven bags, 950kg plastic woven bags.
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Introduction
85% Undensified Silica Fume is a micro-silica fume with 85% SiO2 content, and the Bulk density is 250-400kg/m³.
Silica fume is a byproduct of producing silicon metal or ferrosilicon alloys. It consists primarily of amorphous silicon dioxide (SiO2), its average granule diameter is 0.15~0.20 μm, specific surface area is 15000~20000 m2/kg. Mainly used for high transparency, high resistance to tear silicone rubber, silicone grease, sealed packaging materials such as capacitors.
Advantages
Parameters
| PROPERTIES | ||
| State | Amorphous -Sub-micron powder | |
| Color | Gray to medium gray powder | |
| Specific Gravity | 2.10 to 2.40 | |
| Solubility | Insoluble | |
| Bulk Density -Densified | 42 to 48 lb/'(500 to 650 kg/m³) | |
| Bulk Density -Undensified “as produced” | 12 to 20 lb/(300 to 450 kg/m³） | |
| SPECIFICATIONS | ||
| Chemical Requirements | ASTM | Typical |
| Silicon Dioxide (SiO₂)% | 85.0 % Minimum | 0.9347 |
| Moisture Content % | 3.0% Maximum | 0.0027 |
| Loss on Ignition (LOI) % | 6.0% Maximum | 0.0382 |
| Physical Requirements | ASTM | Typical |
| Oversize percent retained on 45-um (325 sieve) | 10.0 % Maximum | 0.0254 |
| Accelerated Porzolaric Strength Activity Index with Portland cement(7 day) | 105.0% Minimum | 1.2607 |
| Specific Surface | 15 ㎡/g Minimum | 22.28㎡/g |
Applications
- Water conservancy and hydropower engineering: in the anti-seepage and anti-abrasion parts, after mixing with micro-silica powder, it can greatly improve the anti-seepage, anti-cracking, anti-abrasion and anti-cavitation performance.
- The production of high-strength concrete: silica powder as admixture to make high-strength concrete, the actual application of its strength level can be achieved 100Mpa.
- Seaport engineering: concrete mixed with silica powder can improve the concrete’s anti-abrasion performance, anti-seepage performance, to prevent electrochemical corrosion of reinforcing steel.
- Traffic engineering: silica powder concrete used in highway pavement and aircraft runway, can greatly improve the early strength and wear resistance of concrete, in the maintenance and repair of highway pavement, you can advance the opening time and increase the economic benefits.
- Shotcrete: significantly improve the adhesion performance and cohesion of plastic concrete, significantly reduce the amount of rebound, increase the thickness of shotcrete once formed, shorten the construction period and save the cost of the project.
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Packaging
The only silica fume factory in China that uses machine packaging.
- 10kg soluble paper bags x 84 on the pallets.
- 20kg soluble paper bags x 42 on the pallets.
- 950kg plastic woven bags x 2 on the pallets(with or without bottom spout)
- 1000kg plastic woven bags x 2 on the pallets(with or without bottom spout )
- 500kg plastic woven bags x 2 on the pallets (with or without bottom spout )
We can also produce according to your requirement.
The machine is automatically packed and filtered by a screen, so that no debris is mixed in.
The machine is automatically packed and filtered by a screen, so that no debris is mixed in.
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All information provided will be kept confidential.
Chinese Leading Silica Fume Manufacturer
HSA has advanced production equipment and standard experimental instruments, and maintains close contact and strategic cooperation with many famous multinational corporations.
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