Three compound activators prescriptions, which are screened out from twenty-four types of reagents that may activate early activity of fly ash with high activation, are prepared by use of the comparison and compound of each activator and orthogonal optimization of activators dosage.

The activator compounded with sulfate and alkalinity is admixed into high-volume fly-ash and cement system to excite the early activity of fly-ash.

The effects of forming process on the relationship between structure and cementitious reactivity of quenched slag were studied by XRD, DTA, TEM, SEM and EDX techniques in combination with mechanical property and alkali leaching tests.

Effect of heat treatment temperature on cementitious activity of red mud;

Research on cementitious activity comparison of several different sources of converter steel slag;

The results showed that the forming process of slag has significant effect on cementitious activity in different preserving environment,and the sample with maximum decrease in cementitious activity is that formed with the lowest quenching temper.