Slag-Based Cementitious Material

This slag-based new material uses granulated blast furnace slag as the main raw material, supplemented with gypsum and lime or cement clinker as activators. It aims to overcome issues such as insufficient cement strength, high cement usage, and excessive hydration heat. This material is particularly suited for environments using full tailings or ultra-fine full tailings as backfill aggregate. During hydration, gypsum acts as a sulfate activator, while clinker or lime serves as an alkaline activator to promote slag hydration. This process primarily generates hydrated calcium sulfoaluminate (i.e., ettringite) and low-alkaline hydrated calcium silicate (C-S-H) gels, effectively enhancing the material's performance.