Fluorgypsum-based thermal-insulation and sound-insulation self-leveling mortar as well as preparation method and application thereof

The invention discloses fluorgypsum-based thermal-insulation sound-insulation self-leveling mortar which comprises the following components in parts by weight: 800-900 parts of fluorgypsum, 50-100 parts of sulphoaluminate cement, 100-500 parts of light aggregate, 50-150 parts of slag powder, 50-100 parts of fly ash, 10-20 parts of a composite active activator, 10-20 parts of an alkaline regulator,10-20 parts of redispersible latex powder, 2-5 parts of a polycarboxylate water reducer, 0.4-1 part of cellulase, 0.5-2 parts of lignin fibers, and 0.5-2 parts of a defoamer. The fluorgypsum-based thermal-insulation and sound-insulation thick-layer self-leveling mortar provided by the invention is specially designed for high-rise floors and has thermal-insulation and sound-insulation self-leveling effects, is formed at a time, and has the advantages of simple preparation process, good material application property, relatively small self-density, excellent thermal-insulation property, good water resistance, high early