Compound insulation formwork for building external wall and construction method of compound insulation formwork

Abstract

The invention discloses a compound insulation formwork for building external wall and a construction method of the compound insulation formwork. The compound insulation formwork comprises an inner bonded mortar layer, a silicified polyphenyl insulation plate, an outer bonded mortar layer, an aerogel fibrofelt layer, an insulation mortar layer, a waterproof layer, a leveling mortar layer and an anti-crack mortar layer which are fixed and attached to an external wall base in sequence. The compound insulation formwork has the advantages of being good in heat insulation and fire prevention performance, safe and reliable in quality, high in wind resisting load, small in deformation coefficient, high in structure stability and the like, the compound insulation formwork and concrete can be pouredand constructed at the same time, an insulation layer and a structural body can be completed at the same time, and the construction period is greatly shortened. Meanwhile, due to the fact that the silicified polyphenyl insulation plate layer and the aerogel fibrofelt layer are connected through insulation nails, the elasticity modulus between the silicified polyphenyl insulation plate layer, theaerogel fibrofelt layer and the insulation mortar layer achieves gradient changing, the layers are tightly combined, the overall deformation coefficient is small, and the structure is more stable.

Description

technical field [0001] The invention relates to the field of construction, in particular to a composite thermal insulation formwork for building exterior walls and a construction method thereof. Background technique [0002] The heat loss of the building envelope accounts for a large proportion of the energy consumption of buildings. Especially at the moment when environmental and energy problems are becoming more and more severe, efforts to promote building energy conservation are of great importance to improving the thermal environment of buildings, reducing environmental pollution, and protecting the earth's resources and ecological environment. has a deeper meaning. In fact, people have long realized the problem of high heat dissipation of building envelope structures, and proposed some methods to improve the thermal insulation of wall components. In recent years, the commonly used insulation materials for the periphery of the wall include organic series such as polyure...

AI Technical Summary

Problems solved by technology

However, this kind of thermal insulation material has poor interface adhesion, and it is difficult to firmly bond with the wall with mortar cold bonding. It has defects such as low tensile strength and compressive strength, poor bearing capacity, easy deformation, easy aging, and easy hollowing and falling off. , resulting in a short service life of the external wall insulation system; although the latter has excellent fire performance, due to some shortcomings of the insulation material itself, such as the surface is brittle, easy to pulverize, slag, low bonding strength, high water absorption, etc., and its The thermal insulation performance is generally difficult to meet the requirement of 65% building energy saving, which greatly limits the scope of application of such thermal insulation materials

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