Impermeable and anti-cracking concrete based on elastic hydrogel composite fibers and preparation method of impervious and anti-cracking concrete

The invention relates to the technical field of concrete, in particular to impermeable and anti-cracking concrete based on elastic hydrogel composite fiber and a preparation method thereof, and the impermeable and anti-cracking concrete comprises the following components in parts by weight: 100-120 parts of cement, 30-50 parts of fly ash, 10-20 parts of silica fume, 20-30 parts of mineral powder, 100-150 parts of fine stone, 5-20 parts of elastic hydrogel composite fiber, 2-5 parts of a water reducing agent and 30-60 parts of water. The elastic hydrogel composite fibers are composite fibers composed of elastic hydrogel fibers and bacterial cellulose. The toughness and crack resistance of the concrete are improved by utilizing the elasticity of the elastic hydrogel fiber, the impermeability of the concrete is improved by utilizing the water absorption expansion characteristic of the hydrogel, and meanwhile, the fiber strength can be improved by in-situ growth crosslinking of the nano-scale bacterial cellulose