GNPGraystar‘s Silica Fume is an un-densified, amorphous light grey silicon dioxide powder with low impurity levels and a constant pH.
This Silica Fume is perfect for use in refractory castables, including low and medium cement, vibratables, and self-flow castables. Used of Silica Fume improves the mechanical properties (MOR, CCS, creep, etc.) of castables by acting as a flow agent and reducing the amount of water required to place a refractory castable mix.
