Silica fume for Spray concrete engineering

When silica fume is doped to the concrete, it significantly improves the adhesion and cohesion of plastic concrete, greatly reduces the rebound volume, increases the linear molding thickness of the spray concrete, which shorten the deadline and engineering cost saved. In Europe and the United States, 75% of the spray concrete is mixed with silica fume, while in Norway and Sweden, silica fume  is a necessary material for spray concrete.