Energy saving composite self heat insulation wall for building

Abstract

The energy saving building wall structure includes a base wall and a prefabricated composite heat insulating board layer fixed outside the base wall. The prefabricated composite heat insulating board layer is spliced with prefabricated composite heat insulating boards comprising concrete board and heat insulating board adhered together. The present invention has the advantages of low cost, low service life and less bubble, crack and peeling off in the surface layer, and is suitable for different areas.

Description

Technical field: [0001] The invention relates to the structure of a building energy-saving enclosure wall. Background technique: [0002] At present, the thermal insulation technology of building energy-saving enclosure walls in China mainly adopts three structural forms: one is to form a thermal insulation layer (hereinafter referred to as external thermal insulation) on the outside of the base wall by painting, spraying or pasting. , and then paint the outer side of the thermal insulation layer to form a 3-5mm thick anti-crack protective layer. Since the thermal insulation layer is mainly made of organic or organic-containing materials, the anti-crack protective layer is relatively thin. Therefore, weather resistance, The fire resistance, impact resistance and durability are poor, and the service life is generally only 20-25 years, which is out of sync with the service life of buildings of more than 50 years. and financial waste, rework waste will also pollute the environ...

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Problems solved by technology

[0002] At present, the thermal insulation technology of building energy-saving enclosure walls in China mainly adopts three structural forms: one is to form a thermal insulation layer (hereinafter referred to as external thermal insulation) on the outside of the base wall by painting, spraying or pasting. , and then paint the outer side of the thermal insulation layer to form a 3-5mm thick anti-crack protective layer. Since the thermal insulation layer is mainly made of organic or organic-containing materials, the anti-crack protective layer is relatively thin. Therefore, weather resistance, The fire resistance, impact resistance and durability are poor, and the service life is generally only 20-25 years, which is out of sync with the service life of buildings of more than 50 years. and financial waste, rework waste will also pollute the environment, and the investment in energy saving is relatively large. In addition, when spraying and painting the heat insulation layer and anti-crack protection layer, it is difficult to control the thickness and uniformity, and the surface layer is prone to hollowing, The second is to form a thermal insulation layer (hereinafter referred to as internal thermal insulation) on the inner side of the wall base by painting, spraying or pasting, and then paint an anti-crack protective layer on the thermal insulation layer. This method of internal thermal insulation It is not as good as external heat preservation in terms of eliminating the "thermal bridge" effect of concrete beams and columns. During interior decoration, the heat insulation layer is easily damaged, which affects the heat insulation effect of the wall and reduces the indoor use area; the third is the enclosure wall The cast-in-place concrete beams, columns and shear walls in the base wall are built with the above-mentioned external thermal insulation method, and the parts of the masonry wall are built with blocks or sintered bricks with thermal insulation performance and thermal insulation masonry mortar. The form of self-insulation of the wall built has the advantages of low energy saving investment and long service life, but the thermal performance requirements of the blocks, bricks and mortar for the masonry wall are relatively high, which is not conducive to large-scale promotion in the country and is difficult to adapt With the continuous improvement of building energy-saving standards, the external thermal insulation of cast-in-place concrete beams, columns and shear walls still has the above-mentioned external thermal insulation problems

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