Abstract: The aluminum-containing mineral phase has large indispensable effect in the formation of excellent geopolymers in the hydration reaction of cement and industrial waste slag, and the geopolymerization of pozzolan active materials. Reviews the hydration mechanism of calcium aluminate hydrate（C-A-H）,calcium sulphoaluminate hydrate（C-A-[S]-H）, calcium aluminosilicate hydrate（C-A-S-H）and calcium chloroaluminate hydrate（C-A-Cl-H） cementitious system. Summarized the formation and reaction laws of the aluminum-containing mineral phase in these types of gelling systems. Adding appropriate additives to high alumina cement can improve the strength and stability of cement. Aluminum replaces silicon, which leads to charge imbalance and can strongly attract and fix heavy metals and other harmful ions. After the interaction of calcium aluminate and chloride ions, chloride ions can be directly fixed, which provides a new idea for the stabilization and harmless treatment of hazardous waste. It is pointed out that the study on the formation and transformation of aluminum-bearing mineral phases in the cementitious systems with different chemical compositions should be pay more attention to.

Key words: Calcium aluminate hydrate, Calcium sulphoaluminate hydrate, Calcium aluminosilicate hydrate, Calcium chloroaluminate hydrate, Hydration mechanism