InterCem® interground cement contains 30% Class F fly ash for use in general concrete construction. InterCem® eliminates on-site blending and additional fly ash silos. The added fly ash improves concrete durability and workability. InterCem® meets CSA specifications for Blended Hydraulic Cements and provides superior resistance to sulphate attack compared to HS cement, superior alkali reactivity (AAR) resistance, lower permeability and lower heat of hydration than GU or HS cements.