4. Geopolymer cement based on slag/fly ash

Raw materials :

• blast furnace slag ;

• Class F fly ash (CaO < 6%) ;

• alkali silicate (user-friendly ).

Geopolymer matrix structure :

Si:Al = 2; crude formulation (K,Na,Ca)-poly(sialate-siloxo); in fact, solid solution of Si:Al = 1, Ca-poly(disialate) (anorthite-like) + Si:Al = 3-5, (Na,K)-poly(sialate-multisiloxo).

The vast majority of studies published to date concern formulations incorporating all aggregates and alkaline ingredients directly into the mixer, without the addition of blast furnace slag. It's not a question of producing cement but concrete, and this technique is not developed in this article (see article