Micro Silica Fume, Grade : Industrial Grade

Addition of silica fume also reduces the permeability of concrete to chloride ions, which protects the reinforcing steel of concrete from corrosion, especially in chloride-rich environments such as coastal regions and those of humid continental roadways and runways (because of the use of deicingsalts) and saltwater bridges. Microsilica, silica fume for refractory in the last three decades, microsilica has been widely used as filler in refractory materials, particularly in castables. Microsilica particles have an average size of 0.15 microns and are an amorphous form of silica which may contain smaller quantities of impurities like c, na or k formed along the production route. Of late, microsilica from ferrosilicon production is not used for refractory applications owing to higher impurity contents. Microsilica in a fresh castable has a dual effect