Iron tailing ceramsite concrete, preparation method thereof and laminated slab prefabricated bottom slab

The invention relates to the technical field of concrete, and particularly discloses iron tailing ceramsite concrete, a preparation method of the iron tailing ceramsite concrete and a laminated slab prefabricated bottom plate, and the iron tailing ceramsite concrete comprises the following raw materials in parts by weight: 310-330 parts of cement; 80 to 100 parts of fly ash; 600 to 650 parts of river sand; 6-8 parts of a water reducing agent; 140 to 160 parts of water; 580 to 600 parts of modified iron tailing ceramsite; the modified iron tailing ceramsite comprises spherical ceramsite, a waterproof bonding layer and a plurality of inorganic fibers, the waterproof bonding layer is bonded to the surface of the spherical ceramsite, the inorganic fibers are distributed on the waterproof bonding layer at intervals, one ends of the inorganic fibers are located in the waterproof bonding layer, and the other ends of the inorganic fibers are located in the waterproof bonding layer. And the other end of the waterproof