Mechanical-spraying light-weight base layer plastering gypsum and preparation method

Mechanical-spraying light-weight base layer plastering gypsum and a preparation method thereof. The invention belongs to the technical field of building materials. The plastering gypsum includes following substances, by mass, 750-900 parts of gypsum, 0-15 parts of cement, 50-250 parts of light aggregate, 0.5-1.2 parts of a gypsum retarder, 0.1-0.4 parts of hydroxypropyl methyl cellulose ether, 2-6 parts of an air entraining agent and 750-850 parts of water. The plastering gypsum is suitable for mechanical spraying construction, is uniform in material blending, is convenient to construct, is strong in adhesion with a base layer, is free of hollowing, falling and cracking, is fire-proofing and heat-resistant, has the effects of heat insulation and sound insulation, is green and environment-protective and is low in cost. The plastering gypsum is mainly used in a leveling layer on a wall, and also has a supply energy saving effect on an inner side of an external wall, a separating wall and ceiling. The plastering gypsum can be used for replacing conventional manual plastering construction, and greatly solves the problems of difficulty of manual plastering, is greatly reduced in construction period and labor cost.