Early-strength heat-insulation type light plastering gypsum mortar and preparation method thereof

Abstract

The application discloses an early-strength heat-insulation type light plastering gypsum mortar and a preparation method thereof. The early-strength heat-insulation type light plastering gypsum mortar comprises the following raw materials in parts by weight: 550-800 parts of gypsum powder, 100-300 parts of heavy calcium, 100-300 parts of light aggregate, 50-100 parts of inorganic retarder, 1-5 parts of early-strength water reducing agent, 1-5 parts of reinforcing agent, 1-4 parts of cellulose ether, 5-15 parts of redispersible latex powder and 400-450 parts of water. The early-strength water reducing agent is prepared by reacting high-purity gypsum and polycarboxylic acid water reducing agent solution, and high-activity functional groups in the polycarboxylic acid water reducing agent are inlaid on the surface of fibrous calcium sulfate whiskers. The light aggregate is prepared from autoclaved aerated concrete. The inorganic expanding agent is used to adjust the setting time, the early-strength water reducing agent and the reinforcing agent are used to improve the compressive strength and bonding strength of the gypsum mortar, and the autoclaved aerated concrete is used to replace traditional light aggregates such as vitrified small balls and expanded vermiculite, so that the heat preservation performance of the gypsum mortar is improved.

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