What is microsilica?
Fineness: the fineness of the silica fume is less than 1μm, and the average particle size is – μm, and the specific surface area is 20 – 28 m2/g. The fineness and specific surface area are about 80100 times of cement and 5070 times of fly ash. Particle morphology and mineral structure: during the formation process of silica fume, the amorphous phase is formed by the .