JPH06146443A - Execution method of concrete wall with heat insulating panel - Google Patents

Abstract

PURPOSE:To simplify execution of a concrete wall with a heat insulating panel, smoothly finish it, and enable reuse of a reinforcing material so as to save resources. CONSTITUTION:When a concrete wall with a heat insulating panel is executed by placing concrete 27 between a heat insulating panel 2 and a concrete formwork 21 and hardening, a reinforcing material 3 of hollow section and formed with a skin layer coping with tension on the surface is provided on the face of anti-concrete side of the heat insulating panel 2 so as to constitute a panel 1 used both as a heat insulating panel and a formwork. Concrete 27 is placed between the panel 1 used both as a formwork and a heat insulation panel and the concrete formwork 21, and after hardening of the concrete 27, the reinforcing material 3 and the concrete formwork 21 are removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete wall with a heat insulating panel, which can easily construct a concrete wall with a heat insulating panel.

[0002]

BACKGROUND OF THE INVENTION In recent years, foaming has been applied to concrete walls, concrete roofs, etc. in order to enhance the indoor heat insulation effect of concrete buildings, and to prevent the distortion of the skeleton due to the temperature difference between seasons and day and night. It is becoming popular to install heat insulating panels made of plastic or the like.

As a method of attaching the heat insulating panel to a wall or the like, there are an inner heat insulating construction method of arranging the heat insulating panel on the indoor side and an outer heat insulating construction method of arranging the heat insulating panel on the outdoor side, and either method is adopted. In such a case, the construction is generally performed as follows. That is, temporarily attach a large number of heat insulation panels to one of a pair of concrete formwork with nails,
Concrete is poured between the heat insulating panel of this formwork and the other concrete formwork, and after the concrete is hardened, the pair of concrete formwork is removed. This allows heat insulation panels to be attached to concrete walls when placing concrete.

In order to further simplify this construction method, there has been proposed a construction method in which the heat insulation panel also has a role as a concrete formwork and the heat insulation panel is used as the concrete formwork. Such a construction method has an advantage that it is not necessary to temporarily fix a large number of heat insulation panels to one side of the concrete formwork with nails or the like, and the construction of the concrete wall with heat insulation panels becomes easy.

However, the heat insulating panel which also serves as the concrete formwork may be deformed by the pressing force due to the weight of the concrete when the concrete is poured. In order to prevent this deformation, the heat insulation panel is supported by using a shackle, flutter, and flutter, but even with this method, the heat insulation panel itself does not have rigidity, so the intervals between the shackle, the slap and the flutter will be small. If it is wide, it bulges locally and waviness is generated on the whole, so a smooth finished surface is not obtained and work is required to finish the wall surface of the concrete after hardening. Moreover, if the installation intervals of the piers are narrowed, there is a problem that the construction becomes troublesome.

Further, the concrete formwork is usually thrown away, which causes problems such as increasing industrial waste and wasting forest resources. Therefore, recycling of concrete formwork is required from the viewpoint of reducing industrial waste and protecting forest resources.

By the way, in the field of civil engineering, etc., the water permeable formwork method has been adopted since the 1960s, mainly from the viewpoint of improving the durability of concrete structures.
The water-permeable formwork method is a method of allowing natural excess water in concrete to be evenly discharged from a concrete formwork having water-permeability while the concrete placed in the formwork hardens. As a result, the water-cement ratio of the concrete surface layer is reduced, and a dense and dense layer of paste is formed near the surface, which makes it possible to create concrete that is unlikely to invade carbon dioxide and salt from the outside, and enhances the protection performance of internal reinforcing bars. The durability performance of the concrete structure can be improved. Further, since bubbles in the concrete escape, the surface of the concrete becomes smooth, and further, it is difficult to cause cross-section loss due to residual bubbles.

In recent years, such a construction method has been applied not only to the field of civil engineering but also to the field of construction. However, there is no method that utilizes both the water permeable formwork method and the method using the above-mentioned heat insulation panel, and as a result, the durability performance of the concrete wall is improved and the construction of the concrete wall with heat insulation panel is simplified. Was difficult.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can simplify the construction of a concrete wall with a heat insulating panel and facilitate the construction of a concrete wall having a smooth finished surface. It is intended to provide a method for constructing a concrete wall with a heat insulating panel that enables the concrete formwork to be recycled, and at the same time improve the durability performance of the concrete wall with a heat insulating panel. It is intended to provide a method for constructing a concrete wall with a heat insulation panel.

[0010]

SUMMARY OF THE INVENTION To achieve this object, a method for constructing a concrete wall with a heat insulating panel according to the present invention is a concrete wall with a heat insulating panel, in which concrete is poured between the heat insulating panel and a concrete formwork to cure the concrete. When constructing, the anti-concrete side surface of the heat insulation panel is provided with a reinforcing material having a hollow section and a skin layer against the tensile force is formed on the surface to form a heat insulation panel that also serves as a formwork It is characterized in that concrete is cast between the heat insulation panel and the concrete formwork, and after the concrete is hardened, the reinforcing material and the concrete formwork are removed.

In the method for constructing a concrete wall with a heat insulating panel according to the present invention, by providing a reinforcing material having a hollow cross-section structure having a skin layer against the tensile force formed on the surface of the heat insulating material on the side opposite to the concrete. Since we are using a formwork and heat insulation panel with increased rigidity, when placing this formwork and heat insulation panel facing a general concrete formwork and placing concrete, When the pressing force due to its own weight acts on the heat insulating panel that also serves as the formwork and the heat insulating panel that also serves as the formwork bulges outward,
The outer skin layer of the reinforcing material will counter this,
Also, when the heat insulating panel that also serves as the formwork is pressed inward by a shackle, slapstick, or flutter, the inner skin layer of the reinforcing material opposes this, so the hollow part between both skin layers also It is possible to absorb the deformation of the skin layer and form a smooth finished surface. Further, since it is not necessary to temporarily fix a large number of heat insulation panels to one of the concrete formwork with nails or the like, the construction becomes simple. Furthermore, the reinforcing material that is removed after the construction can be reused by reattaching it to the heat insulation panel, thus saving resources.

Further, according to the present invention, a discharge groove for discharging moisture in concrete is formed on the concrete-side surface of the formwork / heat-insulating panel in which the reinforcing material is provided on the anti-concrete-side surface of the heat insulating material. If a drainage member is further provided,
In addition to the same effect as above, a dense layer can be formed near the surface of the concrete wall, so the durability performance of the concrete wall with a heat insulating panel can be improved, and further, cross-section loss due to residual bubbles is unlikely to occur. .

[0013]

DETAILED DESCRIPTION OF THE INVENTION A method for constructing a concrete wall with a heat insulating panel according to the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a heat insulating panel that also serves as a mold used in the present invention.
[Fig. 4] is a horizontal cross-sectional view at the time of construction when constructing a concrete wall with a heat insulating panel using the heat insulating panel that also serves as the formwork. In this specification, the same members are denoted by the same reference numerals in each drawing.

As shown in FIG. 1, a formwork / heat insulation panel 1 used in the present invention comprises a heat insulating material 2 (heat insulation panel) having a predetermined heat insulation performance, and a formwork using this formwork / heat insulation panel 1. And a reinforcing material 3 made of a plate material having a hollow structure, which is provided on the surface of the heat insulating material 2 on the anti-concrete side when the concrete is poured thereinto.

As the heat insulating material 2, a material having a certain heat insulating performance and a certain strength when used as a concrete formwork is used. As such materials,
For example, foamed synthetic resins such as rigid foamed polystyrene, rigid foamed polyurethane, and polypropylene foam; quasi non-combustible or more composed of a foam containing a vinyl chloride resin or a chlorinated vinyl chloride resin containing an inorganic filler as a main component. Materials; or acrylic resin, vinyl chloride, phenol resin and the like. Such a thickness of the heat insulating material 2 (T
₁ ) is usually about 20 to 75 mm.

The reinforcing material 3 plays a role of reinforcing the heat insulating material 2 when the heat insulating panel 1 which also serves as the formwork is used as a concrete working formwork. It is possible to sufficiently withstand the pressing force when the formwork / heat insulating panel 1 is pressed by its own weight. That is, the reinforcing member 3 is a plate member having a hollow cross-section structure in which a large number of rectangular hollow portions 4 are partitioned by a partition wall 5 and opened in parallel, and skin layers 6a and 6b that resist tensile force are formed on both inner and outer surfaces. It has a structured structure. The reinforcing material 3 is, for example, vinyl chloride resin,
It can be formed by extrusion molding polycarbonate or the like. The thickness (T ₂ ) of such a reinforcing material 2
Is usually about 3 to 15 mm.

The reinforcing material 3 is provided on one surface of the heat insulating material 2 so that it can be separated from the heat insulating material 2 after hardening of the concrete, and is joined to the heat insulating material 2 with an adhesive or the like. When the heat insulating material 2 and the reinforcing material 3 are joined with an adhesive, it is preferable to use spot joining or line joining.

Next, with reference to FIGS. 2 and 3, a method for constructing a concrete wall with a heat insulating panel using the heat insulating panel 1 that also serves as a mold will be described. 2 and 3 show an example of constructing a concrete wall with a heat insulating panel having a heat insulating panel on the indoor side of the wall of the building.

First, the outer mold 21 is arranged, and the heat insulating panel 1 also serving as a mold serving as an inner mold is arranged so as to face the outer mold 21. As the external formwork 21,
Although what is conventionally used as a concrete formwork can be used, it is also possible to use as the external formwork 21 the same thing as the reinforcement material 3 used for the above-mentioned formwork / heat insulating panel 1. Next, a foam tie 22 is used to maintain a predetermined space between the external formwork 21 and the formwork-cum-insulation panel 1, and at the same time, keep the pier 23 from 120 to 15, for example.
Standing at a narrow interval of about 0 mm, the vertical flap 24 and the horizontal flap 25 are arranged outside the outer mold 21 and the heat insulating panel 1 that also serves as the mold, and are fixed by a tightening metal fitting 26.
As a result, concrete 27 is placed between the outer formwork 21 and the formwork / heat insulating panel 1.

The cast concrete 27 presses the heat insulating panel 1 that also serves as an internal form, but this pressing force is not supported by the stile 23, the vertical slat 24, and the horizontal slat 25. 1 tries to bulge out toward the indoor side. Therefore, in the formwork / heat insulating panel 1, the portion not supported by the pier 23 or the like tends to bulge indoors, and the portion supported by the pier 23 or the like tends to be displaced outward.

However, in the present invention, since the heat insulating material 2 is supported by the reinforcing material 3, when the form-working heat insulating panel 1 is about to swell to the indoor side, the skin layer 6a on the indoor side of the reinforcing material 3 and The partition wall 5 resists so as to prevent swelling, and when it is recessed to the outdoor side, the skin layer 6 on the outdoor side
b and the partition wall 5 counter this. Moreover, the hollow portion 4 between the two skin layers 6a and 6b also functions to absorb the deformation of the respective skin layers 6a and 6b.
The indoor surface of the can be a smooth surface without waviness. Therefore, after constructing the concrete wall 20 with the heat insulation panel, it is not necessary to attach the mortar dumpling to the heat insulation material 2 by the so-called GL method and attach the gypsum board to finish the wall surface to a smooth surface. It will be simple.

In this way the concrete hardens,
After the concrete wall 20 with thermal insulation panel is constructed, FIG.
The reinforcing material 3, the outer mold 21 and the like are removed as shown in FIG.
According to the present invention, the reinforcing material 3 having a hollow cross-section having the skin layers 6a and 6b against the tensile force is provided on the surface of the heat insulating material 2 on the side opposite to the concrete, so that the rigidity of the heat insulating material is also increased. Since the panel 1 is used, when the heat insulating panel 1 also used as the formwork is arranged so as to face the general concrete formwork 21 and the concrete 27 is placed, the weight of the concrete 27 before the concrete 27 hardens. When the pressing force generated by the mold acts on the heat-insulating panel 1 that also serves as the formwork and the heat-insulating panel that also serves as the formwork bulges outward, the outer skin layer 6a of the reinforcing member 3 opposes this, and also When the heat insulating panel 1 that also serves as the formwork is pressed inward by 23, the vertical flap 24 and the horizontal flap 25,
Since the inner skin layer 6b of the reinforcing member 3 opposes this, the hollow portion 4 between the two skin layers 6a, 6b also absorbs the deformation of the respective skin layers 6a, 6b, resulting in a smooth finished surface. can do. Further, the work of temporarily fixing a large number of heat insulation panels to one of the concrete formwork with nails or the like is not required, the construction work can be simplified, and a concrete wall with a heat insulation panel can be easily constructed. Further, the reinforcing material 3 that is removed after the wall is constructed can be reused by reattaching it to the heat insulating material, so that resource saving can be achieved.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be variously modified. The form and heat insulating panel used in the present invention may be configured as shown in FIGS. 4 and 5, for example. 4 is an exploded perspective view showing another embodiment of the heat insulating panel also used as a mold used in the present invention, and FIG. 5 is a concrete wall with a heat insulating panel constructed by using the heat insulating panel also used as a mold shown in FIG. It is a horizontal sectional view at the time of construction when doing.

As shown in FIG. 4, in the heat insulating panel 10 which also serves as the formwork of the present embodiment, a skin layer having a hollow cross section is formed on the surface which is the side opposite to the concrete after the heat insulating material 2 is poured into the concrete and has a hollow cross section. The reinforcing member 3 is provided, and further, a drainage member 7 in which a drain groove 8 for draining water in concrete and the like is formed on the surface which becomes the concrete side after the concrete is poured is provided. In the heat insulating panel 10 that also serves as the formwork of this embodiment, the heat insulating material 2 and the drainage member 7 constitute a heat insulating panel.

In the present embodiment, the drainage member 7 is a resin molded product in which a plurality of drainage grooves 8 parallel to each other extend in the vertical direction. The drainage member 7 can be formed by extruding vinyl chloride resin, polycarbonate, or the like, for example. Moisture emissions from concrete are also affected by the water-cement ratio. Therefore, the width X and the depth D of the drainage groove 8 need to be determined corresponding to the water cement ratio.

Since concrete may enter the discharge groove 8 and become clogged, a filter member 9 (see FIG. 5) that has water permeability and does not allow concrete to pass is provided at the opening of the discharge groove 8. preferable. The filter member 9 allows moisture and air in concrete before hardening to pass therethrough, and is, for example, a water-permeable woven fabric, a water-permeable nonwoven fabric, or a polyethylene film (for example, 1 m).
Those with porosity of m to 10 mm), net (□ 1 mm
To □ 10 mm). When the filter member 9 is a woven fabric, a non-woven fabric, or the like, the filter member 9 can be joined to the drainage member 7 with an adhesive or the like. When the filter member 9 is the polyethylene film, the net or the like, it can be joined to the drainage member 7 by thermal lamination or the like.

The drainage members 7 may be provided on the entire surface of one side surface of the formwork / heat insulating panel 10 at a predetermined interval, or may be provided on a part of one side surface of the formwork / heat insulating panel 10 at a predetermined interval. It may be provided in advance. The point is that the required amount of water can be discharged from the concrete and the heat insulation performance should not be degraded.

Next, a method of constructing a concrete wall with a heat insulating panel will be described with reference to FIG. First, the outer mold 21 is arranged, and the heat insulating panel 10 serving also as the mold serving as the inner mold is arranged so as to face the outer mold 21. Next, a foam tie 22 is used to maintain a predetermined space between the external formwork 21 and the heat insulating panel 10 that also serves as the formwork.
3, the vertical flap 24 and the horizontal flap 25 are arranged outside the outer mold 21 and the heat insulating panel 10 that also serves as the mold, and the tightening metal fitting 26
Fixed by. Further, concrete 27 is placed between the outer formwork 21 and the formwork / heat insulating panel 10. After the concrete is hardened and the concrete wall with the heat insulation panel is constructed, the reinforcing material 3, the external formwork 21 and the like are removed.

Also in this embodiment, since the reinforcing member 3 is provided on the surface of the heat insulating panel 10 which also serves as the formwork, on the side opposite to the concrete side, the interior surface of the constructed concrete wall with the heat insulating panel is smooth without waviness. It will be a face. Further, since the drainage member 7 is provided on the surface on the concrete side, excess water and air in the concrete can be evenly and naturally discharged from the discharge groove 8 while the concrete hardens. As a result, the water-cement ratio of the concrete surface layer is reduced, and a dense and dense layer of paste is formed in the vicinity of the surface, so that concrete that is unlikely to invade carbon dioxide and salt from the outside can be created, and the protection performance of internal reinforcing bars is improved. It can increase the durability performance of concrete walls. Further, since the cross-section loss due to the residual bubbles is unlikely to occur, the strength of the concrete wall can be increased.

In this embodiment, since both the water-permeable formwork method and the method of using a heat insulating panel that also serves as a formwork are used together, a durable concrete wall can be constructed and the heat insulating panel is easy to construct. A method of constructing an attached concrete wall can be provided.

The present invention is not limited to the embodiments described above, and it is needless to say that the present invention can be further modified within the scope of the idea of the present invention.

[0032]

According to the present invention, when concrete is placed between the heat insulating panel and the concrete formwork to be hardened and the concrete wall with the heat insulating panel is constructed, the surface of the heat insulating material on the surface opposite to the concrete side is applied. Since the rigidity of the heat insulating panel also used as a formwork is increased by joining the reinforcing material of the hollow cross section structure with the skin layer that resists the tensile force, the pressing force when placing concrete is applied to the heat insulating panel also used as a formwork. Even if it works, deformation of the heat insulating panel that also serves as the form can be prevented, and the wall surface can be made smooth. Further, since the formwork and heat insulating panel has a heat insulating material, it is not necessary to temporarily fix a large number of heat insulating materials to one side of the mold with nails or the like, and the construction work is simplified. Furthermore, the reinforcing material that is removed after the concrete wall with the heat insulation panel is constructed can be reused by reattaching it to the heat insulation panel, which saves resources.

Further, a drainage member further having a drainage groove formed on the concrete side of the formwork / heat insulating panel provided with a reinforcing material on the anti-concrete side of the heat insulating material to drain moisture in concrete is further provided. By providing the same effect as above, it is possible to reduce the water-cement ratio of the concrete surface layer part and form a dense layer near the surface of the concrete wall, improving the durability performance of the concrete wall with a heat insulation panel. Can be made. Moreover, since the bubbles in the concrete can be removed, the cross-section loss due to the residual bubbles hardly occurs and the strength of the concrete wall can be increased.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a heat insulating panel that also serves as a mold used in the present invention.

FIG. 2 is a horizontal cross-sectional view at the time of construction when constructing a concrete wall with a heat insulating panel using the heat insulating panel that also serves as the formwork shown in FIG.

FIG. 3 is a horizontal cross-sectional view during construction when constructing a concrete wall with a heat insulating panel using the heat insulating panel that also serves as the formwork shown in FIG.

FIG. 4 is an exploded perspective view showing another embodiment of the heat insulating panel that also serves as the mold used in the present invention.

5 is a horizontal cross-sectional view at the time of construction when constructing a concrete wall with a heat insulating panel using the heat insulating panel that also serves as the formwork shown in FIG. 4. FIG.

[Explanation of symbols]

 1 Insulation panel that also serves as formwork 2 Insulation material 3 Reinforcement material 4 Hollow part 6a, 6b Skin layer 7 Drainage member 8 Discharge groove 10 Insulation panel that also serves as formwork 20 Concrete wall with insulation panel

Claims (3)

[Claims] 1. When constructing a concrete wall with a heat insulation panel by placing concrete between the heat insulation panel and the concrete formwork to cure the concrete, the surface of the heat insulation panel on the anti-concrete side has a hollow cross section on the surface. Forming a heat insulating panel that also serves as a formwork by providing a reinforcing material with a skin layer that resists tensile force, place concrete between the heat insulating panel that also serves as the formwork and the concrete formwork, and after hardening the concrete A method for constructing a concrete wall with a heat insulating panel, which comprises removing the reinforcing material and the concrete formwork. 2. The heat insulating panel according to claim 1, further comprising a drain member having a drain groove formed on a surface of the heat insulating panel, which is to be a concrete side after the concrete is poured, for discharging moisture in the concrete. Claim 1
Construction method of concrete wall with heat insulation panel described in. 3. The reinforcing material is a plate material having a plurality of hollow portions opened in parallel.
Construction method of concrete wall with heat insulation panel described in.