95% Undensified Silica Fume
95% Undensified Silica Fume
• Unrivaled Strength Amplification: Crafted to meet the demands of modern construction challenges, our 95% Undensified Silica Fume is an indispensable ingredient for producing high-strength concrete. By significantly increasing the compressive and flexural strength of concrete mixes, it paves the way for structures that can withstand formidable loads and environmental pressures.
• Densification and Impermeability: When added to concrete formulations, this silica fume’s unique particle size distribution contributes to the remarkable reduction of voids within the material. The result? Concrete that boasts exceptional impermeability, preventing the penetration of harmful agents such as water, chemicals, and corrosive elements. This translates to longer-lasting structures with lower maintenance requirements.
• Enhanced Durability: The durability of concrete often dictates the longevity of structures. Our 95% Undensified Silica Fume enhances concrete’s resistance to abrasion, freeze-thaw cycles, and other deteriorative factors. This translates into structures that remain steadfast against the test of time, reducing the need for frequent repairs or replacements.
• Optimized Workability: Despite its formidable strength-enhancing attributes, incorporating our silica fume into your concrete mix doesn’t compromise workability. Its finely engineered particles integrate seamlessly, ensuring ease of placement and finishing, even in complex architectural designs.
• Eco-Conscious Solution: Sustainability lies at the core of our product’s philosophy. By using our 95% Undensified Silica Fume, you’re choosing an eco-conscious option that reduces the need for clinker production in cement, thus curbing carbon emissions. Join the movement towards greener construction practices while achieving exceptional performance.
95% Undensified Silica Fume Parameters
|National Standards for Silica Fume for Concrete|
|National Standards and Organizations||Europe||Norway||France||Australia||United States||Canada||Japan||China|
|Standard Code||CEN EN||NS||NF||AS||ASTM C||CSA||JIS||GB/T||GB/T|
|SiO2 % ≥||85||85||85||85||85||85||85||85||85|
|SO3 % ＜||2||2.5||3||1||3|
|CI－ % ＜||0.3||Report||0.2||Report||0.1||0.1||0.1|
|CaO % ＜||1||2||1|
|MgO % ＜||5|
|Si % ＜||0.4||0.4|
|Na2O+K2O % ＜||4||1.5|
|C % ＜||4|
|Water Content % ＜||2||3||3||3||3|
|Burn Vector % ＜||4||5||6||6||6||5||6||4|
|Specific Surface Area ㎡/g||15-35||≥12||20-35||≥15||≥15||≥15|
|45μm Sieve Residue % ＜||10||10||5|
|Loose capacity kg/m³||Report||Report|
|Specific Gravity g/㎝³||2.1-2.3||Report|
|Water Demand Ratio % ≤||125||125|
|Volcanic Ash Activity Index||%（3d) ≥|
|Water to Glue Ratio||0.5||0.5||0.484||0.5||0.5||0.5|
What makes Ewende the best-in-class choice?
Ewende 95% Undensified Silica Fume is carefully and accurately processed to ensure key quality parameters, with a careful choice of raw materials (low alkalis, low volatiles), constant quality control, thanks to the application of our rigorous Statistical Process Control System (SPC). This ongoing quality assurance program includes continuous in-process monitoring and analysis of our production, stable charges and adjustments in furnace conditions and post-control of finished products.
This results, among other things, in:
①A higher percentage of silicon recovery and a lower level of impurities
②Consistent quality and good workability in flow and setting and hardening properties achieved through chemical consistency.
95% Undensified Silica Fume Application
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.
In construction, the Ewende 95% Undensified Silica Fume improves the performance of a wide range of construction materials in a variety of applications:
①High performance concrete with microsilica reduces construction time and provides structural advantages and durability for buildings, bridges, transport tunnels, roadways, etc.
②Fiber cement with microsilica is used in roofing materials, such as flat and corrugated sheets, tiles, pipes and moldings for new structures or to efficiently help replace asbestos.
③Gypsum board with microsilica improves fire resistance and core strength.
For refractory materials, Ewende 95% Undensified Silica Fume offers the following advantages:
①Improved strength and service life in high-temperature applications
②Compatible with the making of complex structures, such as castables and shaped parts, thanks to good placement characteristics and low porosity, combined with excellent heat resistance properties.
For oilfield cementing operations, Ewende 95% Undensified Silica Fume offers the following advantages:
The Oilfield drilling, cementing and completion portfolio include numerous microsilica additives to ensure essential bonding and mechanical properties.
Backed by rigorous quality control measures, our 95% Undensified Silica Fume is manufactured to meet the highest industry standards. Each batch undergoes meticulous testing to ensure consistent particle size distribution, chemical composition, and performance characteristics.
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