Special high-thixotropy type sprayed concrete additive suitable for high geothermal condition and preparation method of special high-thixotropy type sprayed concrete additive

The invention relates to the field of building materials, and particularly discloses a special additive for high thixotropic sprayed concrete suitable for a high geothermal condition and a preparation method of the special additive, and the special additive is prepared from raw materials including a monomer A, a monomer B, a monomer C, a pillared material and an initiator; the monomer A, the monomer B and the monomer C are used as polymerization monomers to be subjected to intercalation reaction with the pillared material to obtain a modified pillared material; the monomer C is p-amino styrene or a substance containing an amino group and a phenyl structure of an unsaturated bond; the structure of the monomer A is shown as a formula (I); in the formula, R1 represents H or-CH3, R2 represents H or-CH3, and R3 represents H or-CH3; the structure of the monomer B is as shown in a formula (II): # imgabs 1 #, wherein R2/R2'represents H or-CH3. According to the additive disclosed by the invention, the sprayed concrete