Preparation method of high-durability iron tailing waste rock pervious concrete

The invention provides a preparation method of high-durability iron tailing waste rock pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps: mixing and stirring iron tailing waste rocks and water, then adding a cementing material (cement, silica fume and fly ash), iron tailing sand and polypropylene fibers, stirring, then adding a mixed solution of water and an additive, stirring, loading into a concrete mold, and curing under standard curing conditions to prepare the pervious concrete. The concrete comprises the following components in percentage by mass: 55%-64% of iron tailing waste rock, 3%-6% of iron tailing sand, 20%-29% of cement, 1.5%-2.5% of silica fume, 5%-10% of fly ash, 5.5%-8.5% of water, 0.025%-0.030% of polypropylene fiber and 0.2%-1.0% of an additive. According to the method, the iron tailing waste rock and the iron tailing sand are used for replacing natural aggregate, so that the durability of the pervious concrete is improved