Ground granulated blast-furnace slag is obtained by quenching molten iron slag from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine p
Samples of "ground granulated blast furnace slag" (left) and "granulated blast furnace slag" (right)
Silica fume
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Silica fume, also known as microsilica, is an amorphous polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and c
Silica fume particles viewed in a transmission electron microscope