Method for restoring cement-based material by polyacrylic acid type intelligent gel

The invention discloses a method for restoring a cement-based material by polyacrylic acid type intelligent gel. The method comprises the following steps of preparing a mixed water solution of NaCl and sodium dodecyl sulfate; adding octadecyl methacrylate; performing stirring at 30 to 60 DEG C for at least 4h until the mixed solution is clear; after nitrogen gas is introduced for at least 10min, adding acrylic acid; performing stirring for at least 5min; adding Na2HPO4; performing stirring reaction until the obtained solution is clear; after nitrogen gas is introduced for at least 10min, respectively adding N,N-methylene bisacrylamide and ammonium persulfate; performing reaction for at least 3h at 60 to 80 DEG C; performing cutting and granulation to obtain the polyacrylic acid type intelligent gel; adding the obtained polyacrylic acid type intelligent gel into the preparation process of the cement-based material to obtain a self-restoration cement-based material. The invention provides the self-restoration p