The invention relates to the field of resourceful treatment of building wastes, and particularly discloses a hydrophobic recycled aggregate ecological drainage
brick and a preparation method thereof. The hydrophobic recycled aggregate ecological drainage
brick comprises a bottom material layer, a surface material layer and a hydrophobic
coating which are sequentially arranged, the hydrophobic
coating comprises primer and finishing paint, and the primer is prepared from raw materials including
epoxy resin, a curing agent and ethyl
alcohol; and the finishing paint is prepared from the following raw materials in parts by weight:
silicon carbide, hydrophobic
nano silicon dioxide, tackifying resin, a stabilizer and
ethanol. The preparation method comprises the following steps: S1, compacting the bottom material layer and the surface material layer, and maintaining; S2, stirring the raw materials of the primer and raw materials of the finishing paint respectively; and S3, spraying primer on the surface material layer, curing at
room temperature, spraying finish paint on the basis of the primer after curing, and standing to form a hydrophobic
coating, thereby obtaining the hydrophobic ecological drainage
brick. The hydrophobic recycled aggregate ecological drainage brick has the
advantage that the drainage effect of the drainage brick is improved.