Under what situation that the user should consider a higher GGBS replacement ratio in concrete?

The mass concrete with strict temperature control requirement (e.g. mega basement or sub-structural works, tunnels etc); Corrosion-resisting concrete structures which are exposed to rigorous conditions (e.g. marine structures, sewerage treatment plant, concrete structures in acidic or alkaline area etc); Concrete structures in the areas with potential Alkali-aggregate reaction.