Sludge-high calcium fly ash alkali-excited cement and preparation method thereof

The invention discloses sludge-high calcium fly ash alkali-excited cement and a preparation method thereof. The alkali-excited cement uses high calcium fly ash as a main raw material, thermally activated sludge as a mineral additive and solution prepared from sodium hydroxide and liquid sodium silicate as a composite chemical additive and makes the system have good performance in a certain curing environment. The method alleviates the environmental burden, and reduces the cost and resource consumption by using industrial waste such as high calcium fly ash and sludge; and the novel alkali-excited cement only has little emission of greenhouse gas, is a low-carbon emission, green and environment-friendly gel material, meets the trend of current social development, and has good economic and social benefits.