White silica fume (white microsilica)

White silica fume, also known as white microsilica, is an ultra-fine, high-purity white powder material widely used in various industries — especially in high-performance concrete and refractory materials. With its extremely fine particle size and strong pozzolanic activity, white silica fume significantly enhances strength, durability, impermeability, and thermal performance across numerous applications.

🔹 Applications of white silica fume in concrete:

• Improved concrete strength: Enhances compressive and flexural strength, making it ideal for ultra-high-performance concrete.

• Better durability: Increases resistance to chemical attacks such as chlorides, sulfates, and acids, improving the concrete’s impermeability and lifespan.

• Enhanced workability: Disperses easily in concrete mixes, reduces bleeding and segregation, and improves finishability.

• Typical uses: Bridges, parking structures, bridge decks, high-rise buildings, and other high-strength concrete projects.

🔹 Applications in refractory materials:

• High thermal resistance: Improves thermal strength and performance at elevated temperatures.

• Enhanced sintering: Promotes stronger bonding and denser refractory structures.

• Common uses: Metallurgy, casting, cement, and glass industries.

🔹 Applications in other industries:

• Ultra-fine filler: Used in high-whiteness products such as white mortar, renders, sealants, and more.

• Chemical manufacturing: Serves as a functional material in producing chemicals, rubber, and glass.

• Specialized construction: Applied in oil well grouting, structural repairs, and other technical applications.