Linking here to Climate Earth LCA for Pozzotive ground-glass pozzolan (GGP) out of Beacon Falls, CT plant: https://pozzotive.com/wp-content/uploads/2020/10/Pozzotive-Life-Cycle-Assessment.pdf. 42% GWP reduction (compared to all-cement control) for 9k psi US Concrete mix designs replacing 50% of cement w/ GGP.
ASTM C1866 Std. Spec. is here: www.astm.org/Standards/C1866.htm
One ACI Materials Journal article on NYC sidewalks w/ 20%-40% GGP cement replacement alongside FA + slag mixes: www.concrete.org/publications/internationalconcreteabstractsportal/m/details/id/51716716