Abstract: A geopolymer material, and a preparation method therefor and the use thereof are provided. The geopolymer material contains modified siallite. On the basis of the total amount of the modified siallite and in terms of oxide, the aluminum content in the modified siallite is 35 weight % or more, and the silicon content is 40 weight % or more. The initial setting time of the geopolymer material is at least one temperature in the range of 70-300° C. is 5-10 hours, and the final setting time is 7-12 hours. The geopolymer material has an appropriate initial setting time and final setting time when activated by an activator, and can achieve well cementation at a higher temperature even when a retarder is not used in cooperation.

Abstract: A polymer having a dispersing function, a preparation method therefor and use thereof as a cement dispersant are provided. The polymer has a structural unit (a), a structural unit (b) and a structural unit (c). The structural unit (a) is provided by an unsaturated polyether, the structural unit (b) is provided by an unsaturated acid and/or a salt thereof and/or an anhydride thereof, and the structural unit (c) is provided by a silane and/or siloxane having a polymerizable group and no less than five carbon atoms. The molar ratio of the structural unit (a), the structural unit (b) and the structural unit (c) is 1:(1-20):(0.01-0.5); and the polymer has a weight average molecular weight of 20,000-90,000 g/mol.