94% Undensified Silica Fume: A High-Performance Supplementary Cementitious Material

94% Undensified Silica Fume (USF) is a highly effective supplementary cementitious material derived from the byproduct of silicon and ferrosilicon alloy production. It contains approximately 94% amorphous silica (SiO2) and possesses exceptional physical and chemical properties that make it a valuable addition to various construction materials, especially concrete and cement-based products.


With a low bulk density ranging from 250 to 350 kg/m3, 94% Undensified Silica Fume is lightweight and easy to handle, resulting in reduced transportation costs. Its specific surface area, typically between 15,000 and 30,000 m2/kg, allows for a high pozzolanic reactivity that enhances the mechanical and durability properties of the final products.


The key features of 94% USF include its ability to significantly increase compressive and flexural strength, reduce permeability, and enhance resistance to chemical attack and abrasion. The use of this material contributes to improved long-term performance and durability of concrete structures, making it an ideal choice for applications in demanding environments.


94% Undensified Silica Fume is widely used in a variety of applications such as high-performance concrete, precast and prestressed concrete, shotcrete, self-compacting concrete, fiber-reinforced concrete, and repair and rehabilitation projects. Additionally, it finds utility in oil well cementing, refractory materials, and the manufacturing of high-quality ceramics, coatings, and polymers.


In summary, 94% Undensified Silica Fume is an indispensable material in modern construction, offering numerous benefits in terms of enhanced performance, durability, and cost-effectiveness. Its versatile applications across multiple industries make it an essential component for sustainable and resilient infrastructure development.

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