The invention relates to the technical field of building materials and ocean
engineering protection, in particular to a preparation method of a marine concrete heavy anti-
corrosion coating. Comprising the following steps: 1, preparing materials and carrying out
dry mixing to obtain an inorganic
dry powder base material; step 2, preparing and mixing wet materials, taking
polymer emulsion, a
silane coupling agent and water, and uniformly mixing the
polymer emulsion, the
silane coupling agent and the water; in a stirring state, slowly dropwise adding the
mixed solution into the inorganic
dry powder base material in the step 1; step 3, dispersion and defoaming: stirring is kept in the dropwise adding process, a defoaming agent is added, high-speed dispersion is performed until the
slurry is in a uniform flow state and has no obvious bubbles, and heavy-duty
cement-based
composite coating slurry is obtained; 4, film forming construction is conducted, specifically, a concrete base surface is coated with the
slurry obtained in the step 3 through a layered
coating technology, and an anti-
corrosion coating is formed after standing and curing. According to the invention, the physical compactness of the coating is greatly improved, the water
absorption rate of the coating is obviously reduced, and the anti-permeability pressure is improved.