99.9% Undensified Silica Fume
99.9% Undensified Silica Fume
- Other names: White Silica Fume, White Microsilica, White Silica Powder
- SiO₂: >99.9%
- Color: White
- Category: Undensified Silica Fume
- Whiteness Index:≥94
- PH Value: 4~7.5
- Bulk density: 150-230kg/m³
- Packages:15kg plastic woven bags, 20kg plastic woven bags, 200kg plastic woven bags,300kg plastic woven bags.
Tips: The indicators of Silica Fume are similar to those of Fumed Silica.
Low Price White Microsilica for Sale
99.9% Undensified Silica Fume is a micro silica fume with 99.9% SIO₂ content, and the Bulk density is 320kg/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.
99.9% Undensified Silica Fume Basic Attributes
Very low permeability to chloride and water intrusion.
Extremely high resistivity (20 to 100 times greater than normal concrete).
Increased abrasion resistance of decks, floors, highways and marine structures.
Excellent resistance to chemical attack by chlorides, acids, nitrates and sulfates.
99.9% Undensified Silica Fume Parameters
99.9% Undensified Silica Fume Application
The characteristics of microsilica are mainly manifested in two aspects: volcanic ash activity and micro-particle nature. Therefore, microsilica is often used as a filler and modified additive.
Used in high-performance concrete, it enhances concrete strength, improves performance, and extends concrete lifespan.
Used in refractory materials, it enhances fluidity, reduces water usage, and improves product strength and durability.
Used in dry mortar and grout, it increases early-stage strength.
Used in wear-resistant flooring, it enhances flowability and increases abrasion resistance.
Used in paints, coatings, resins, rubber, and other polymer materials as a filler.
The high resistivity and low permeability of micro-silica sprayed concrete in the project can reduce the corrosion of steel bars and wire mesh by chlorides, reduce the amount of rebound, reduce permeability, and improve the durability of freezing and thawing. Improved bending and compressive strength.
Micro silica fume can be used as a binder, active agent and mineralizer for refractory materials and kiln furniture materials, which is conducive to improving the solid-phase reaction and sintering driving force of refractory materials, enhancing the reaction speed and sintering density of materials, and is conducive to crystal transformation. performance of the material.
Using silica fume as the main raw material to prepare composite silicate thermal insulation materials has gradually become a hot spot in the application of silica fume. Composite silicate thermal insulation coating is one of the most widely used thermal insulation coatings at present. It belongs to barrier type thermal insulation coating.
Silica fume can improve the performance of concrete mixture, reduce air bubbles on the surface of concrete, improve the strength of concrete surface, make the surface of concrete smooth, inhibit the carbonation of concrete, resist the erosion of harmful external media, and help improve the durability of concrete. help improve the durability of concrete.
By adding micro silica fume, optimizing concrete mix ratio, temperature control and other technical means, the PHC pipe pile can be realized without high-pressure steam curing and energy-saving technology, which not only simplifies the process, but also greatly reduces coal and electricity consumption, and also reduces carbon dioxide. emission.
Concrete mixed with silica fume is mainly used in water cushions, ponds, flood discharge tunnels and other parts. As an auxiliary cementitious material, microsilica fume can significantly improve the strength of cement stone in the concrete matrix, and at the same time greatly improve the relationship between cement stone and aggregate. between the bond strength.
Adding micro silica fume to oilfield cement can improve the thermal stability of oilfield cement, change the C/S ratio of cement, and change the composition and structure of cement hydration products. With the addition of different amounts and ambient temperatures, it can be obtained A series of hydration products with good stability, high strength and low permeability.
There is no fine sand in the permeable concrete, and the porosity is relatively large. A small change in the water-cement ratio of the blank sample can cause a large change in the fluidity of the mixture. The water-cement ratio is difficult to control, and the water-cement ratio can be significantly improved by adding silica fume. workability of fresh concrete mixtures.
Micro silica fume is used in high-grade high-performance low-cement refractory pouring materials and prefabricated parts. The service life is three times that of ordinary castables, the refractoriness is increased by about 100°C, and the high-temperature strength and thermal shock resistance are significantly improved. It has been widely used in ceramic industries.
Micro silica fume is used for agricultural fertilizer and improved soil varieties. Micro-silica fume is mixed with potassium hydroxide or potassium carbonate and heated to make potassium silicate slow agricultural fertilizer. It is not easy to volatilize and lose, can protect the soil, promote the development of crop roots, and inhibit pests and diseases.
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