Method for improving mechanical properties of gypsum-based material

The invention belongs to the field of building materials, and relates to a method for improving the mechanical property of a gypsum-based material. The method comprises the following steps that: a) gypsum powder, a reinforcing agent, a toughening agent, a hardening agent and water are mixed to obtain gypsum slurry, wherein the reinforcing agent comprises an acrylic polymer, polyisocyanate polyester, polyalkyd resin and the like, wherein the toughening agent comprises glass fibers, paper fibers and wood fibers, and the hardening agent comprises sodium silicate, quartz powder and sand; and b) solidifying and molding the gypsum slurry, and then performing drying to obtain the high-strength gypsum-based material. According to the method provided by the invention, the reinforcing agent, the toughening agent and the hardening agent of specific types are doped into the gypsum, so that the breaking strength, hardness and shearing strength of the gypsum-based material are greatly improved. Withthe method adopted, the