JPS60119843A - Outer wall heat insulating construction method of building - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nonflammable external wall insulation method that is integrated with a building frame.

In recent years, from the standpoint of energy conservation, the use of insulation materials has been encouraged in Japan as well as in Western countries. In general, when a wall of a building such as a reinforced concrete structure is made to have an insulating structure, an internal insulation method has been used in which a heat insulating material is installed on the indoor side of the wall structure. In contrast to this internal insulation method, the so-called external insulation method, in which insulation material is attached to the outdoor side of the wall structure, prevents internal condensation, eliminates thermal stress and distortion in the structure, increases living space, and alleviates fluctuations in indoor temperature. It is gradually becoming popular due to its excellent characteristics such as:

By the way, this external insulation method involves fixing a heat insulating panel, which is a combination of heat insulating material and finishing material, to the wall surface using heat insulating bolts, etc., and attaching the heat insulating material to the wall surface with adhesive and finishing the surface. Furthermore, when attaching several concrete forms, there is sometimes a method of attaching an insulating panel to the inside of the form, pouring concrete, attaching the insulating panel to the concrete wall, and finishing the surface. The method of fixing this insulation panel with insulation port is to drill a hole in the concrete.
After that, it was time-consuming to drive in bolts (bolts), and it was necessary to drive in an extremely large number of bolts to complete the panel joint. In addition, in the method of pasting the insulation material with adhesive or the method of attaching it when concrete is poured, if a fire breaks out in a neighbor's house, the foamed plastic insulation material used for insulation becomes hot due to the fire. There were defects that caused the surface to melt and the finishing material to fall off, impeding firefighting efforts. In addition, the method of attaching it to a concrete formwork had many inconveniences during construction, such as the need to attach form ties to prevent it from falling off, and the complicated shape required cutting, which was very time-consuming.

The object of the present invention is to provide a heat insulating outer wall structure for a building that can be easily constructed in any complicated location without falling off in the event of a fire.

The feature of the present invention is that when the concrete formwork is being assembled, foaming mortar is sprayed on the inside of the outer formwork and foamed and hardened to form a heat insulating layer in any intricate and complicated part. To provide a heat insulating outer wall structure in which an inorganic heat insulating layer integrated with concrete can be formed in every corner of a building frame by pouring concrete.

According to the structure of the present invention, foamed mortar gal made of calcareous raw material is sprayed onto the inside of the external formwork of the formwork for concrete pouring, and after hardening,
By pouring foamed Molcle Rete, a wall structure is created that integrates inorganic insulation and concrete.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a cross-sectional view of an embodiment of the present invention.
In this figure, a foam mortar /I/2 is sprayed in advance on the outer wall side of the concrete 1, and a surface decorative material 6 is formed thereon.

Next, the manufacturing method of this embodiment will be explained.

First, as shown in Fig. 2, after temporarily constructing the formwork 3a for concrete pouring on the outer wall side with square batters 4 and form ties 5, the foamed mortar/L/2 is turned into a mortar gun 7, and then the formwork 3a on the inner wall side is The frame 3b is fixed, and concrete slurry 9 is poured into the formwork from a concrete pump 8.

This foaming mortar/I/2 is made by adding a foaming agent such as aluminum powder or a synthetic resin emulsion such as ethylene acetate polymer to a hydraulic calcareous raw material to make a slurry, or by making a calcareous raw material into a water-dispersed slurry. , those made by stirring after adding foaming agents such as synthetic surfactants and protein decomposition products, and those made by mixing lightweight aggregates such as perlite, vermiculite, and expanded polystyrene beads into calcareous raw materials. and the specific gravity after curing is 0.2
~0.8 is preferred. If the specific gravity is less than 0.2, the strength will be so low that it cannot be put to practical use, and if it is greater than 0.8, the heat insulation effect will be impaired.

Next, after the poured concrete 1 has hardened, the formwork 3 is removed and the surface decorative finishing material 6 is applied.This embodiment has the following effects.

Since the concrete and foam composition are integrally formed, it has excellent mechanical properties such that the foam does not fall off, and there is no need to fix the panel with hardware as in the past.

In addition, since it uses an inorganic foam, there is no fire prevention defect such as melting and disappearing in the event of a fire, and it is smooth and suitable as a base for painting, so it does not require surface treatment like organic panels. There is an effect that there is no such thing.

Moreover, since spraying forms a heat insulating layer on top of the painting,
There were no seams like when cutting and pasting the panels,
This has the effect of making it possible to apply insulation layers extremely easily even in small areas, making it possible to build buildings without insulation defects.

As described above, the present invention has the effect of being able to provide a durable wall insulation structure for a building that is integrated with inorganic and seamless concrete and is suitable for a noncombustible insulation exterior wall structure. be.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a heat insulating wall structure according to the invention. FIG. 2 is a schematic diagram showing the foaming and rutal spraying process in the construction process of the example, FIG. 3 is a schematic diagram showing the concrete pouring process in the construction process of the example, and FIG. The figure is a longitudinal sectional view of the construction process of the example before removing the formwork. l... Concrete, 2... Foaming mortar, 3... Formwork, 4... Butterfly angle, 5
...Form tie, 6...Surface finishing material patent applicant Masao Toyama Representative Kikusui Chemical Co., Ltd. Figure 1 Figure 3 Figure 2 Figure 4

Claims (1)

[Claims] An exterior wall insulation method in which foamed mortar made from calcareous raw material is sprayed onto concrete formwork in advance, and after it hardens, concrete is poured over the foamed mortar to create a wall structure that integrates inorganic insulation and concrete.