Outside thermal insulation construction method for cement-base lightweight plate outside wall

Abstract

The invention relates to walls and roof coverings of industrial and civil buildings, in particular to a construction method applying external wall insulation of cement based thistle boards. The invention is characterized in that the walls and roof coverings comprise polyurethane foam insulation material, flexible anti-cracking putty made of the same material, TOX nylon sleeve steel nails, cement based environmental protection thistle boards, grooves, alkali proof mesh cloth, flexible anti-cracking putty, L-shaped grooves and tongues, weatherproof silicone seal gum, cavities and facings. The cement based environmental protection thistle boards are processed to have L-shaped mortise-and-tenon joint structures in a factory, the TOX nylon sleeve steel nails are used for anchoring the cement based environmental protection thistle boards and base courses, the cavities are reserved in the middle, then the polyurethane foam insulation material is poured into the reserved cavities, so as to complete composite connection combining both the anchoring and bonding; location references are formed by each L-shaped mortise-and-tenon joint structure of two adjacent cement based environmental protection thistle boards, the flatness of the outer surface is also ensured, the L-shaped tongue and groove tenon abutment joint positions are coated with foam rubber to be sealed, the flexible anti-cracking putty 8 is applied to the preprocessed grooves with 1.5 to 2.0 mm depth and 50 to 80 mm width, the alkali proof mesh cloth 7 is pressed in the grooves, then the flexible anti-cracking putty 8 is applied, the grooves are levelled up by using the method of pressing the cloth once and applying the putty twice, the depressions of the holes of the TOX nylon sleeve steel nails are leveled up by flexible anti-cracking putty made of the same material, and then the facing is performed to the surface.

Description

1. Technical field [0001] The invention relates to walls and roofs of industrial and civil buildings. Specifically, it is a construction method for external thermal insulation of cement-based light board external walls. 2. Background technology [0002] my country's building energy-saving standards are advancing to 65%, and will continue to increase. The style of thermal insulation engineering decoration is increasingly rich and multi-grade. So far, most of the external thermal insulation technologies are wet-work construction on site, which pollutes the environment; moreover, thermal insulation, waterproofing, and decoration must be constructed independently, so it is impossible to achieve the multifunctional requirements of thermal insulation, waterproofing, and decoration in one construction; the non-polyurethane rigid foam insulation layer currently used The external thermal insulation structure generally has defects such as large thermal conductivity of the thermal in...

AI Technical Summary

Problems solved by technology

So far, most of the external thermal insulation technologies are wet-work construction on site, which pollutes the environment; moreover, thermal insulation, waterproofing, and decoration have to be constructed independently, so it is impossible to achieve the multi-functional requirements of thermal insulation, waterproofing, and decoration in one construction; the non-polyurethane rigid foam insulation layer currently used The external insulation structure generally has defects such as high thermal conductivity of the insulation layer, easy cracking, and water seepage; and the construction method of spraying polyurethane insulation layer also has certain defects: 1. Spraying construction causes polyurethane microfoam to float, which seriously pollutes the environment

2. The floating loss of polyurethane microfoam and the smoothness of polyurethane surface repair cause excessive waste of raw materials

3. It takes a lot of man-hours to repair the polyurethane surface

4. The cross-sectional density of the sprayed polyurethane insulation layer is not uniform, and the quality accidents of the insulation project due to the volume shrinkage of the insulation layer occur from time to time

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