Corrosion-resistant precast concrete square pile

The invention discloses an anti-corrosion precast concrete square pile, and belongs to the technical field of special concrete preparation, and a preparation method of the anti-corrosion precast concrete square pile comprises the following steps: stirring and mixing all raw materials to obtain a concrete composite material, grouting the concrete composite material through a square pile mold, and after the concrete composite material is cured to specified strength, obtaining the anti-corrosion precast concrete square pile. And demolding to obtain the anti-corrosion precast concrete square pile. Wherein the concrete composite material is prepared from the following components in parts by weight: 320 to 380 parts of cement, 60 to 90 parts of fly ash, 850 to 1150 parts of coarse aggregate, 460 to 600 parts of fine aggregate, 18 to 36 parts of reinforcing agent, 7.2 to 9.6 parts of water reducing agent, 1 to 10 parts of dispersing agent, 12 to 28 parts of anti-seepage agent and 140 to 220 parts of water; on the ba