Preparation method for hydrothermal synthesis of fly ash silicate aggregate

A preparation method for hydrothermal synthesis of fly ash silicate aggregate, comprising the following steps:

• preparing an inorganic-organic composite activator, and a preparation method thereof is as follows:
• preparing an inorganic-organic hybrid excitation monomer, which is prepared through a thiol-alkenyl chemical reaction between a thiol group of octathiol polysilsesquioxane and an alkenyl group of butenol monomer;
• weighing 1 to 2 parts by weight of sodium metasilicate, 2 to 10 parts by weight of potassium hydroxide, and 0.3 to 1.5 parts by weight of inorganic-organic hybrid excitation monomer to obtain the inorganic-organic composite activator;
• preparing a silicate aggregate raw material, which comprises:
• fly ash 55% to 75%, carbide slag 15% to 25%, quicklime 10% to 20%, expanded perlite 3% to 5%, vitrified micro bubble 0.55% to 1.50%, and inorganic-organic composite activator 0.05 to 0.2%;
• mixing measured fly ash, carbide slag, quicklime, and vitrified micro bubble, and adding the inorganic-organic composite activator according to the mass ratio to continue stirring to produce a mixture;
• forming a ball disc, wetting the expanded perlite that forms a core of the ball by spraying water, adding a prepared mixture, spraying water while adding, standing and curing, performing a maturation and activation treatment in an autoclave, undergoing a silica calcium reaction for a hydrothermal synthesis to obtain the fly ash silicate aggregate.