Concrete preparation process

The invention discloses a concrete preparation process which is characterized by comprising the following steps: S1, preparing raw materials: preparing the following raw materials for later use: 160-240 parts of high-efficiency cement, 240-310 parts of sand, 40-50 parts of high-chromium corundum powder, 4-10 parts of barium sulfate powder, 330-350 parts of stones, 20-26 parts of an auxiliary agent, 20-35 parts of an additive and 200-500 parts of water; S2, primary mixing: pouring the high-efficiency cement, the sand, the high-chromium corundum powder, the barium sulfate powder and the stones into a mixer for primary mixing, and fully mixing to obtain a mixture A; S3, secondary mixing: adding the auxiliary agent, the additive and water into the mixer, and fully mixing with the mixture A toobtain concrete raw stock; the effects that the performance of the concrete is maintained to be more durable, the pumpability is excellent, the quality is high, the waterproof and anti-seepage performance is good, and the mat