JPS59228547A - Structure of outer heat insulating double wall - 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 new external insulation double-wall structure, and more specifically, to a new external insulation double-wall structure that can be applied to new or existing building structures at a cost as low as that of single-wall external insulation and in a short construction period. It concerns the structure of an insulated double wall.

The general methods for insulating the exterior walls of building structures include the so-called external insulation method, in which a heat insulating material is attached to the indoor side of the exterior wall, and the so-called external insulation method, in which the insulation material is attached to the outdoor side of the exterior wall. It is well known that external thermal insulation has better ik force in some places. This is true even in warm regions and places, although there are differences in degree.

There are two methods for external thermal insulation, including the relationship between the concrete wall such as Conc. Broadly classified. Currently, the method widely used in Japan is to integrate the building frame wall, the insulation material, and the wall material (hereinafter referred to as "-heavy wall external insulation").

On the other hand, in Europe and the United States, in addition to this single-wall external insulation, a method of providing a ventilation layer between the insulation material and the wall material (hereinafter referred to as double-wall external insulation) is also used.

- Heavy-wall external insulation is generally cheaper than double-wall external insulation and has the advantage of a shorter construction period, but it does not completely solve the problems of moisture permeability and condensation required for external insulation methods. It has the drawback of not having it.

This imposes restrictions on the selection of finishing materials, making the design plan narrower. This is because external insulation does not allow the use of materials with high moisture permeability resistance on the outdoor side. On the other hand, the double wall external insulation method solves the above problem by providing a ventilation layer to release water vapor from the indoor side without difficulty, and allows for freedom in selecting the exterior design and material size.

As mentioned above, double-wall external insulation is an extremely superior insulation method compared to single-wall external insulation, but in order to provide a ventilation layer, another external wall must be installed on the outside, which is costly. It has major drawbacks in terms of construction, such as significant disadvantages in terms of surface area and construction period.

In view of the above-mentioned circumstances, the inventor of the present invention has conducted intensive research and found that by using a composite body in which the insulation layer and the finishing base material are laminated and integrated, and a ventilation layer is provided between the two, the cost and construction period can be reduced. It is the same level as single wall external insulation, and the design of the exterior etc.
At J-Ryoji, we have been able to offer a completely free externally insulated double wall structure.

In the composite used in the present invention, a heat insulating layer and a base material are laminated together, and a ventilation layer is provided between the two. As the heat insulating material, known heat insulating materials having a certain degree of stiffness can be used, and among them, foamed plastic molded products such as foamed polystyrene, foamed polyethylene, and foamed polyurethane can be molded into any shape and structure. suitable. As the finishing base material, all known organic and inorganic yarns can be used, such as veneer, plywood, asbestos, cement board, GRC board, etc.

The formation of a ventilation layer between the insulation material and the finishing substrate is
This can be easily achieved by joining one of the surfaces with an uneven structure and the other surface as a flat surface, or by making both surfaces have an uneven structure and joining them so that they fit together and do not block. . The uneven structure is preferably, for example, regularly or irregularly provided protrusions of an appropriate size, vertical, horizontal, diagonal, etc. grooves of an appropriate width and depth provided singly or in combination. The lamination and integration of the heat insulating material and the finishing material can be easily carried out by mechanical means such as adhesion and screw fixing, alone or in combination. In addition, stacking and stacking can be done in advance, or it can be laminated and integrated on site.

The open surface of the heat insulating material of the above composite is in contact with the concrete, ALC, etc. framework to form the inner and outer walls, while the open surface of the burnt base material is in contact with the outer wall finishing layer and forms the outer wall. ) constitute the outer wall. Therefore, a more suitable material, shape, and structure for the base material is selected depending on the desired finish. For example, in the case of painting, a plate-like base material can be used, and paints with high moisture permeability that are unsuitable for single-wall external insulation can also be used, and the waterproofness of the painted surface can be improved. It becomes possible to change the direction. When making a mortar base and attaching tiles or bricks to it, using a perforated board as a base material can increase the bonding force with the mortar due to the anchor effect. Furthermore, a board coated with resin, mortar, etc. in advance can also be used as a finishing base material. As another method for increasing the adhesion of the base material to the mortar base, the surface of the base material may be made to have an uneven shape. Also, when making a mortar base, it is convenient to apply a sealer to the base material in advance. Furthermore, when using metal sipe ink, which is completely impossible with heavy wall external insulation, it is advantageous to provide the finishing base material with slits, metal receivers, holes, etc.

The external heat insulation double wall structure of the present invention has the above-mentioned composite body covered with concrete
~It is formed by using it as a formwork during pouring. That is, one way to save labor in concrete pouring work is to rationalize the formwork, and the composite of the present invention can be used as it is as a concrete formwork, without having to be removed even after the concrete has hardened. It is poured as an integral part of the concrete wall. With this method, there is no need to remove the formwork from the frame wall, and the heat insulating material, ventilation layer, and finishing base material are integrated with the frame in one process. When used as concrete formwork in this way, the heat insulating material must be made of a material with high compressive strength, and the finishing base material must be selected from a material with high tensile strength and shear strength. Further, it is desirable that the heat insulating material has good f=1 adhesion to concrete, and in this case as well, it is preferable to make the joint surface with the concrete uneven to improve adhesion. It is also desirable that the heat insulating material has low hygroscopicity. Furthermore, since the ventilation layer comes into contact with the outside air at the end, it is desirable that the ventilation layer has low hygroscopicity and has an appropriate water vapor permeability. Examples of heat insulating materials having such physical properties include extruded foamed polystyrene.

On the other hand, materials with low hygroscopicity are suitable for the material of the second floor. When placing cracked concrete, large tensile and shearing forces act on it, so it is advisable to reinforce it as necessary. In some cases, this reinforcement is used only during concrete pouring and then removed, and in other cases, paulownia wood is installed as a base and frame at the same time as reinforcement. Metals, molded steel, plastic, mortar, etc. are preferably used as the reinforcement.

By using it as a concrete formwork as described in 1., the inner (inner) outer wall, ventilation layer, and finishing base layer can be created all at once, achieving double-wall external insulation at the same construction time and cost as double-wall external insulation. be done.

In general, the accuracy of the finished concrete external wall is determined by the outer formwork, inner formwork, reinforcement arrangement, concrete placement technique, etc., but the construction method using the composite of the present invention does not require particularly high precision. . Unevenness and misalignment of panels can be fully absorbed by a raised layer on the finished substrate. The same applies to the fitting of openings and wall ends.

The external heat insulation double structure of the present invention can also be formed by integrating the above-mentioned composite structure with a concrete wall, A, LC, etc., regardless of whether it is new or existing. The composite can be attached to the building frame using adhesives, mortar, resin mortar, etc.
This is done by physical attachment using screws, screws, anchor bolts, etc., or by using a combination of these. The choice of method for these installations depends on the weight of the second layer, but it is better to use a combination of adhesive and physical means! Real and good-looking.

When installing a composite on an uneven exterior wall, it is difficult to adjust the level using resin mortar or the like. In this case also q
By simply attaching the composite to the l, the inner and outer walls, ventilation layer, and finishing base layer can be completed all at once, and by simply applying the finishing layer, the outer and outer walls can be completed. It is preferable that the composite body attached to the exterior wall be as lightweight as possible. Unlike the case of single-wall external insulation, the exterior wall finishing material can be freely designed such as paint, brick, tile, stone, etc. Also, since the finishing layer is constructed on site, it is possible to design materials such as paint, brick, tile, stone, etc. Flexible. In this way, according to the structure of the present invention, an existing outer wall can easily be made into a double-wall external heat insulator.

FIG. 1 is a conceptual cross-sectional view showing the external heat insulation double wall structure of the present invention.

In the figure, (]) is the indoor layer, (2) is the concrete wall, (3) is the insulation layer, (4) is the finishing layer, and (5) is the exterior wall finishing layer. . The insulation material (3) is the
It is integrated with the second base material (4), and grooves communicating vertically and horizontally are provided on the joint surface of the heat insulating material (3) with the finishing F base material (4), and the groove functions as a ventilation layer (6). The concrete 1/wall (2) has a composite body (Δ) in which the heat insulating material (3) and the base material (4) are integrated and which filters out the air layer. -1- The inner (inner) outer wall consisting of the wall (2) and the heat insulating material (3) and the outer (outer) outer wall consisting of the finishing base material (4) and the outer wall finishing layer (5) are ventilation layers. (6) are integrally constructed.

FIG. 2 is a partially cutaway perspective view showing an embodiment of the present invention, showing an example in which the composite (A) is used as a concrete formwork.

In the same figure, as a concrete outer formwork, a composite is formed by integrally joining a heat insulating material (3) with grooves that communicate vertically and horizontally and a finishing base material (4) consisting of a perforated board 7)). Using (A), after hardening the concrete IJ-), apply a mortar base (8) to the base material (4) via a sealer (7), and make it into tiles (9). An outer wall finishing layer (5) is applied. (10) is a separator, which allows the composite (A) to be firmly attached to the concrete wall (2).
), and the mortar base (8) bites into the holes of the perforated board and is firmly joined by the so-called anchor effect. In such a structure, indoor moisture passes through the wall (2), the insulation material (3), reaches the ventilation layer (6), and is discharged outdoors.

As mentioned above, the feature of the present invention is that by employing a composite of a heat insulating material with an internal air layer and a finishing base material, a double wall external insulation structure can be achieved at the same cost and effort as single wall external insulation. The aim is to achieve. The present invention can be easily applied to existing building structures, and when used as concrete formwork, the complicated work involved in removing concrete formwork can be eliminated, making it more efficient. It is possible to achieve double wall external insulation. Furthermore, the exterior design and materials can be completely freely selected, allowing the creation of a variety of unique exteriors.

[Brief explanation of the drawing]

FIG. 1 is a conceptual sectional view of the structure of the present invention, and FIG. 2 is a partially cutaway perspective view of an essential part showing an embodiment of the present invention. 1... Indoor finishing layer 2... Concrete 1-Wall 3... Insulation material 4... Finishing base material 5.
・・Exterior wall finish second layer 6・Vent layer 7・Sealer 8・Mortar base 9・Tile finish 10・Separator A・Composite

Claims (1)

[Scope of Claims] ■ In a double wall structure consisting of an inner outer wall consisting of a body and a heat insulating material, and an outer outer wall consisting of a finishing base material and an outer wall finishing layer. An externally insulated double-walled structure characterized in that it is a composite body in which a heat insulating material and a finishing base material that are adjacent to each other are laminated and integrated, and a ventilation layer is provided between the two. 2. The structure according to claim 1, wherein the ventilation layer is formed by an uneven structure on the surface of the adjoining heat insulating material and/or the finishing base material. 3. The structure according to claim 1, wherein the composite body also serves as a concrete formwork. 4. The structure according to claim 1, 2, or 3, wherein the finishing base material is reinforced with metal, molded steel, plastic, mortar, etc. 5. The structure according to claim 1, wherein the frame is an existing outer wall made of concrete, ALC, etc. 6. The structure according to claim 1, 2, or 4, wherein the finishing base material is a perforated board. 7. The structure according to claim 1, 2, 4, or 6, wherein the base material has a support made of plastic, metal, or the like.