Lightweight gypsum plaster mortar

Abstract

The invention belongs to building mortar, and particularly relates to lightweight gypsum plaster mortar which is the secondary development of gypsum plastered product technology. The lightweight gypsum plaster mortar is used for leveling inner sides of outer walls, inner partition walls and ceilings of buildings, and the heat-insulated effect is good. Because the flue gas desulphurized building gypsum of power plants is used, the problem of disposing and using the desulphurized gypsum is solved, and the circulating economy is developed. The method for preparing the plaster mortar comprises the following steps of: accurately weighing up the following materials in part by weight: 70 to 80 parts of flue gas desulphurized gypsum of power plants, 15 to 25 parts of vitreous hollow microsphere, 0.2 to 0.4 part of cellulose ether, 0.3 to 0.6 part of air entraining agent and 0.2 to 0.5 part of retarding agent; and putting the materials into a container, adding 60 to 120 parts of water into the container, and uniformly stirring the mixture at the normal temperature to obtain the lightweight gypsum plaster mortar. The lightweight gypsum plaster mortar has the advantages of moderate strength, unnecessary additional making of protective covering, direct leveling after plastering, high performance cost, high workability, short construction period, functions of preventing fire, absorbing sound, and adjusting air humidity and no emission of CO2 in the production process.

Description

technical field [0001] The invention belongs to building mortar, in particular to a lightweight gypsum plastering mortar. Background technique [0002] Plastering gypsum is a new type of plastering material. It is a building wall material made of building gypsum as a base material mixed with light aggregate or sand and admixtures. It is divided into surface plastering gypsum, bottom plastering gypsum and thermal insulation gypsum. Among them, thermal insulation gypsum is generally used for the leveling layer on the inner side of the building’s outer wall, and has good thermal insulation performance, but because of its low strength, it must be used as a protective layer before leveling after plastering. Leveling directly, but the thermal insulation performance is far inferior to that of thermal insulation gypsum. [0003] In my country, due to the unstable quality of desulfurized building gypsum, immature product technology and lack of related technical standards, plaster pl...

AI Technical Summary

Problems solved by technology

The traditional method has not taken measures for the insulation of the inner partition wall and ceiling. How to develop plastering materials with thermal insulation effect without increasing the building cost and reducing the usable area has become the development direction of plaster products.

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