JPH0130984B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulating outer wall structure for a building that has excellent fire and heat resistance.

Generally, when building walls made of reinforced concrete, concrete blocks, etc. have a heat insulating structure, a plastic foam structure heat insulating material is pasted with adhesive on the surface of the wall structure on the outdoor side, and then the surface of the heat insulating material is There is a construction method called the so-called external insulation method, in which a layer of mortar is applied to the roof.

According to this construction method, it is possible to obtain a structure in which a lath mesh is interposed with mortar between the outermost finishing material and the heat insulating material. However, because the bond with the insulation material was incomplete, due to the effects of a fire at a neighboring house, the insulation material on the wall that had been externally insulated melted due to high heat and flowed down, causing the mortar finish on the surface to fall off and break, causing firefighting efforts. There was a problem that it was interfering with the

To address these problems, the applicant proposed an insulating outer wall structure in an invention filed on the same date (Japanese Patent Application No. 86837/1983). This heat insulating exterior wall structure consists of a wall frame, a heat insulating material attached to the outer surface of the wall frame, an end portion of the heat insulating material being covered from the front side to the back side, and a heat insulating material attached to the outer surface of the wall frame, and the back side of the heat insulating material A transparent folded holding sheet is attached to the wall structure, and the end of the folded holding sheet on the surface side of the heat insulating material is overlapped, and the same end is attached to the surface of the heat insulating material with adhesive. It has a transparent flat holding sheet attached thereto.

In the case of a detached house with a floor height of one or two floors, the wall frame and the insulation surface are covered with folded glass fiber mesh, like the upper and lower ends of the outer wall and around the openings in the above-mentioned invention filed on the same day. By simply connecting the finishes, you can prevent the finishing materials from falling off.

However, the gable wall of an apartment complex or the outer wall of a building with air conditioning equipment often has no or few openings, and many have 4 to 5 stories, or 10 or more stories.

When external insulation is applied to the gable walls of such high-rise residential buildings, the wall frame that sandwiches the insulation material and the mortar finishing material are connected with glass fiber mesh at the top and bottom ends of the wall, and around the openings, and the mortar is used to Even if it is stuck, if the wall surface is exposed to high temperatures due to a fire at a neighbor's house and the insulation material melts, the surface material may rise or move due to wind, or the glass fiber mesh may be cut due to some reason. This could cause the surface finishing material to fall off and impede firefighting efforts.

The present invention was made with the aim of preventing such inconveniences, and involves folding a holding sheet such as a glass fiber mesh over the ends of adjacent heat insulating materials that are joined to each other, and attaching mortar to the wall structure. The above-mentioned disadvantages were solved by bonding with an adhesive such as.

Embodiments of the invention will be described below with reference to the drawings.

FIG. 6 (without FIG. 1) is a process diagram for constructing the insulating outer wall structure for a building according to the present invention, and shows a vertical cross section at an intermediate position of the outer wall.

First, a heat insulating material 2 such as polystyrene foam or polyurethane foam having a rectangular shape of 60 cm x 90 cm is placed on the wall of the building, that is, a wall frame 1 made of concrete, blocks, etc., starting from the bottom.
with adhesive 3 such as mortar (first
figure). When the heat insulating material 2 is glued to the desired height, two transparent folded holding sheets 4 such as glass fiber mesh cut into a width of 30 cm to 50 cm are stacked one on top of the other, and the heat insulating material 2 is bonded with adhesive 5. Glue it to the wall structure 1 directly above the wall 2 (Fig. 2).

The folded holding sheets 4 are sequentially placed next to each other, either continuously or discontinuously, so that the necessary number of sheets can be applied to the wall frame 1.
Glue it with adhesive 5.

After the adhesive work of the folded holding sheet 4 is completed, the other heat insulating material 2 is subsequently adhered with the adhesive 3 (FIG. 3).

In this way, the folded holding sheets 4 are glued horizontally to the wall frame 1 at certain height or width intervals, while the insulation material 2 is glued to the entire wall surface in the vertical direction. 2 is cured until it fully adheres to the wall frame 1.

Then, a transparent flat holding sheet 5 such as another glass fiber mesh is attached to the surface of the heat insulating material 2, and the folded holding sheet 4 is folded back to the end 2a of the heat insulating material 2. The portion 4a and the flat-shape holding sheet 5 are polymerized, and the overlapped portions of the folded-back holding sheet and the flat-shape holding sheet are firmly adhered with an adhesive 6 such as mortar (fourth
figure).

The mortar 6 with good adhesion on the surface of the heat insulating material 2 is
It passes through the overlapping portion of both holding sheets 4, 5 to fix both holding sheets 4, 5, and connects them to wall frame 1 at a certain height or width interval.

Finally, when the adhesive 6 such as mortar on the surface of the heat insulating material has sufficiently hardened, finishing material 7 for the exterior is applied using a decorative material or decorative mortar.

In the figure, the joint between the heat insulating materials 2 and 2 is shown in a butted state, but there is no need to be particularly particular about this structure, and it is also possible to join the heat insulating materials 2 and 2 in a reciprocal manner.

The folded holding sheet 4, which is adhered to the wall body 1, straddles the end 2a of the heat insulating material 2 from the back side of the wall body 2, and is folded and joined to the surface of the heat insulating material 2, is shown in FIGS. 1 to 5. , two sheets were used, but it can be carried out in the same manner even if one sheet is used as shown in FIG.

In FIG. 6, by making the hanging portion of the folded portion 4a larger than the vertical width of the heat insulating material 2, it can also serve as the flatness holding sheet 5 and enclose the heat insulating material.

Both holding sheets 4 and 5 are made of glass fiber mesh in the embodiment, but other mesh shapes,
It has heat resistance and permeability through weaving, knitting, etc., preferably has excellent adhesion to mortar, etc., and is a heat insulating material 2.
The material and structure may be any material as long as it has an excellent adhesion effect with the finishing material 7. In the case of a glass fiber mesh, a bundle of glass fibers is usually woven into a coarse mesh with an interval of about 4 to 6 mm, and preferably the glass fibers are alkali-treated. As the adhesive, one that has heat resistance and is difficult to melt under heat is used.

The heat insulating material 2 may be made of other materials such as expanded polystyrene or polyurethane foam, as long as it has heat retaining properties and is preferably lightweight.

The installation height or width of the folded holding sheet 4 disposed along the wall frame 1 and the end portion 2a of the heat insulating material 2 is as follows:
The length is 1 m to 15 m, preferably 3 m to 8 m, but is not particularly limited to this number.

In the above embodiments, only the horizontal direction of the wall frame 1,
In other words, although the case where the folded holding sheets 4 are provided along the upper and lower ends of the heat insulating material 1 is shown, the folded holding sheets 4 may be provided in the vertical direction, in other words, along the left and right ends of the heat insulating material 1. You can also do it. Of course, construction can also be carried out in both directions at the same time.

As explained above, according to the present invention, when holding the upper and lower ends, the left and right ends, or the upper and lower left and right ends of the heat insulating material with the folded holding sheet, one end is adhered to the wall structure and the other end is held by the folded holding sheet. The edges of the insulation material are polymerized and fixed to the flatness holding sheet on the surface of the insulation material, so even if the insulation material melts and becomes fluid due to high temperature effects such as a fire, the surface finishing material will not deform. There will be no inconvenience caused by the wall or falling off the wall structure. Therefore, it is possible to provide a wall structure that has excellent heat resistance and does not interfere with fire extinguishing activities.

[Brief explanation of drawings]

1 to 5 are cross-sectional explanatory views showing the construction process of one embodiment of the heat insulating outer wall structure of a building according to the present invention, and FIG. 6 is a cross-sectional explanatory view showing another embodiment. 1...Wall frame, 2...Insulating material, 4...Folded holding sheet, 5...Flat sheet, 7...Finishing material.

Claims (1)

[Scope of Claims] 1. A heat insulating material on the outdoor side of a wall structure such as concrete is bonded, and a finishing material is bonded to the surface of the heat insulating material via a transparent flat holding sheet such as glass fiber mesh. In an insulated exterior wall structure of a building, one end is fixed to the wall skeleton on the back side of the insulation material at desired intervals in the height direction, the lateral direction, or both directions, and the other end is fixed to the wall frame on the front side of the insulation material. This is a permeable folded retention sheet that is polymerized with the flatness retention sheet, which folds and holds the wall structure and the heat insulating material, and is made by continuously fixing the overlapping portions of the folded retention sheet and the flatness retention sheet with adhesive. Insulated external wall structure of buildings. 2. The folded holding sheet and the flat holding sheet are glass fiber mesh.
Insulated external wall structure of the building mentioned in Section 1. 3. A heat insulating outer wall structure for a building according to claim 1, wherein the heat insulating material is made of a foamed plastic material such as expanded polystyrene or urethane foam.