Formula and construction process of exterior wall thermal insulation putty-free plastering mortar

Abstract

The invention relates to the field of building materials, particularly to a formula and a construction process of exterior wall thermal insulation putty-free plastering mortar. The exterior wall thermal insulation putty-free plastering mortar comprises bottom-layer plastering mortar and surface-layer plastering mortar, wherein the bottom-layer plastering mortar comprises the following components:30-50 parts of white cement, 5-11 parts of ash calcium, 50-65 parts of white marble machine-made sand, 0.2-0.5 part of hydroxypropyl methyl cellulose, 0.1-0.3 part of wood fiber, 0.1-0.2 part of polypropylene fiber and 0.5-1.5 part of latex powder, and the surface-layer plastering mortar comprises the following components: 40-60 parts of white cement, 5-10 parts of ash calcium, 35-45 parts of white marble machine-made sand, 0.2-0.5 part of hydroxypropyl methyl cellulose, 0.1-0.3 part of wood fiber, 0.1-0.2 part of polypropylene fiber, 0.5-1.5 parts of latex powder and 0.05-0.1 part of cellulose ether. According to the exterior wall thermal insulation putty-free plastering mortar prepared by the formula, materials, procedures and time of a putty layer are saved, and the cost can be better saved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a formula and a construction process of a putty-free plastering mortar for thermal insulation of external walls. Background technique [0002] With the development of society, more and more high-rise buildings rise from the ground. In order to adapt to the sound insulation, heat preservation and decoration functions of modern buildings, when constructing exterior walls, on the one hand, it is necessary to consider the performance of bond strength and crack resistance. The effect of aesthetic decoration also needs to be considered. On the outside of the brick body, first hang the insulation material with bonding mortar, and then fix the anti-crack fiberglass mesh with plastering mortar. Once fixed, the work on the exterior finishing layer can proceed. In order to ensure the thickness and flatness of the decorative layer, it is often necessary to coat the exterior wall putty lay...

AI Technical Summary

Problems solved by technology

The thick putty layer is only for the bottom surface to be flat and smooth when brushing the decorative paint layer, which not only wastes a lot of material, but also applies the second putty layer under the condition of high-altitude operation, and the outer layer After the putty coating is finished, it needs to be polished again, which requires a lot of labor, and the second coat of putty must be finished after the first coat of putty layer, and it needs to be dried for a period of time before it can be carried out, which increases the time cost

Moreover, after multi-layer coating, the integrated structure of the exterior wall is affected, and its integrity is poor, and problems such as peeling and cracking are prone to occur, which brings safety hazards to construction and later use