Anti-radiation cracking large-volume heavy concrete as well as preparation method and construction method thereof

The invention provides anti-radiation cracking large-volume heavy concrete and a preparation method and a construction method thereof.The anti-radiation cracking large-volume heavy concrete is prepared from 280 parts of cement, 50 parts of coal ash, 50 parts of mineral powder, 30 parts of expanding agent, 600 parts of magnetite sand, 1650 parts of magnetite ore, 400 parts of yellow sand, 150 parts of water, 32.8 parts of anti-cracking agent and 10 parts of water reducer.The anti-radiation cracking large-volume heavy concrete is reasonable in design; the use amount of cement and a cementing material is reduced as much as possible, the hydration heat release amount can be greatly reduced, the shrinkage and cracking risk of the concrete is favorably controlled, the water-binder ratio and the maximum water consumption of the concrete are reasonably controlled, and the adverse effect caused by self-shrinkage is reduced; expansion is generated to compensate for self-shrinkage and temperature drop shrinkage of the concrete, the crack resistance is improved through cooperative regulation and control of the hydration rate and the shrinkage process, and concrete cracking is inhibited.