The invention belongs to the technical field of underground
engineering plugging materials, and particularly relates to a novel curtain grouting material and a preparation method thereof.The grouting material is obtained by mixing a component A and a component B. The component A comprises 40-80 parts of
Portland cement, 10-30 parts of
metakaolin powder, 10-30 parts of granulated
blast furnace slag and 80-120 parts of
tap water; the component B is prepared from 10 to 30 parts of industrial-grade water glass. The preparation method of the novel curtain grouting material comprises the following steps: S1, weighing a component A material in parts by weight, mixing, adding
tap water, and uniformly stirring to obtain component A
slurry; and S2, weighing the material of the component B in parts by weight, adding the material of the component B into the
slurry of the component A, and condensing after full contact to obtain the novel curtain grouting material. The grouting
slurry prepared by compounding the
metakaolin, the
blast furnace slag and the
Portland cement has a relatively small bleeding rate, the stability of the slurry is improved, a double-liquid slurry stone body obtained by mixing the grouting slurry with the
industrial water glass has relatively high
mechanical strength, the
corrosion resistance is better than that of common
cement-water glass, and meanwhile, the service life of the grouting slurry is prolonged. By adopting the
metakaolin and the
blast furnace slag, the use amount of the
cement is reduced, on one hand, the
pollution of
cement production to the environment is reduced, on the other hand, the
engineering cost is reduced, and good environment-friendly and economic values are achieved.