A Closer Look: Fly Ash, Slag Cement Metakaolin ...
Jan 07, 2020· Slag cement is generally ground to less than 45 microns and has a specific gravity in the range of to Slag is generally used in higher percentages than fly ash, commonly constituting between 30% and 45% of the cementitious material in concrete, while some comprise as high as 70% or more of the cementitious material in a mix.