Ultrahigh-aperture-ratio lightweight pervious concrete as well as preparation method, special ingredient and application thereof

The invention discloses light pervious concrete with an ultrahigh aperture ratio as well as a preparation method, special ingredients and application of the light pervious concrete. The pervious concrete comprises the following components in parts by weight: 700-1000 parts of cement, 0-300 parts of fly ash, 2-4 parts of a water reducing agent, 1-3 parts of a slurry stabilizer, 2-5 parts of hollow polypropylene fibers, 4-8 parts of a porous hydrophobic agent, 2-6 parts of an interface coupling agent, 250-320 parts of water, 40-70 parts of an open-pore physical foaming agent and 300-500 parts of through-pore pervious lightweight aggregate. According to the invention, the technical route of combining the perforated foam concrete and the through-hole permeable lightweight aggregate is used for the first time to prepare the lightweight permeable concrete with the ultrahigh aperture ratio, so that the lightweight permeable concrete has a relatively high permeability coefficient, can keep relatively high compressive