Construction technique for filling polyurethane hard bubbles in wall outer insulation layer

Abstract

The present invention relates to a construction technique for filling polyurethane hard bubbles in a wall outer insulation layer. Insulation boards are glued to a base wall processed by an adhesive, the distance of 10 to 30mm is left from the adhesive between the insulation boards and the base wall to the circumferential edges of the insulation boards, and 10 to 100mm gaps are left between the insulation boards. When the adhesive glued to the insulation boards reaches more than 60% of the strength designed, polyurethane hard bubbles are poured in the gaps preset of the insulation boards to make polyurethane foamed and fill up the gaps. The outer surface of the polyurethane hard bubbles is abraded to be in the same plane with the outer surfaces of the insulation boards. Anti-crack mortar of about 3 to 8mm thickness is spread on the outer surfaces of the insulation boards, an alkali-proof net or a steel wire net is embedded, and an anti-crack mortar protective layer is made. The present invention has the advantages that the wall outer insulation layer forms a seamless whole body, quality problems, such as crack, seeping water freeze thawing, fall, etc can be thoroughly eliminated, the use time of the outer insulation layer is extended, and the fire-proofing grade of the outer insulation layer is improved.

Description

technical field [0001] The invention relates to a construction technique for compositely pouring polyurethane rigid foam into an external thermal insulation layer of a wall, which is a construction technique for pouring polyurethane rigid foam when the external thermal insulation layer of a wall is laid, and belongs to the construction field. Background technique [0002] With the development of the construction industry, people pay more and more attention to the thermal insulation performance of building walls, heating in winter, and energy saving. Energy saving and improvement of building thermal conditions have become an urgent need for the construction industry and the entire society, especially those with high efficiency and energy saving advantages. Energy-saving building exterior wall insulation structure is being widely promoted and applied. The external insulation structure of the wall with thermal insulation material and grid cloth externally attached to the wall h...

AI Technical Summary

Problems solved by technology

This process is relatively simple and the cost is not high, but there are quality risks such as easy cracking at the joints of the board, water seepage, freezing and thawing, and falling off, which makes it difficult to guarantee the service life of the outer insulation layer

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