JP2587961Y2 - Formwork and heat insulation panel with water permeability - Google Patents

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD OF THE INVENTION The present invention provides a concrete wall with a heat insulating panel, which can improve the durability of a concrete wall by discharging the moisture of the poured concrete and can simplify the construction. The present invention relates to a formwork and heat-insulating panel with water permeability that is capable of being sufficiently reinforced.

[0002]

[Technical background of the invention] Showa 6 in the field of civil engineering
Since the 0's, a water-permeable formwork method has been employed mainly from the viewpoint of improving the durability of concrete structures. The principle of this is that while the concrete poured into the formwork remains fresh, the excess water in the concrete is evenly and naturally discharged from the concrete formwork that has water permeability. is there. As a result, not only the bubbles in the concrete come out and the concrete surface becomes beautiful, but also cross-sectional defects due to residual bubbles hardly occur,
In addition, by discharging excess water from the mold, the water-cement ratio of the concrete surface layer is reduced, and a dense and dense layer of paste is formed near the surface, so that carbon dioxide gas and salt are hardly penetrated from the outside. Concrete can be formed, the protection performance of the internal rebar can be enhanced, and the durability of the concrete structure can be improved.

[0003] A formwork having water permeability used in such a construction method is one in which a number of small holes are formed in a weir board, and a woven cloth or the like having a filter property is stuck thereon. Water and air are allowed to escape from the concrete poured between the formwork.

[0004] In recent years, such a construction method is often applied not only to civil engineering but also to the field of architecture. By the way, in recent years, in order to enhance the indoor thermal insulation effect of concrete buildings, and to prevent distortion of the frame due to the temperature difference between winter and summer, day and night, concrete walls, concrete roofs, etc. The installation of such heat insulation panels is becoming popular.

[0005] As a method of installing the heat insulating panel on a wall or the like, there are an internal heat insulating method in which the heat insulating panel is disposed indoors and an external heat insulating method in which the heat insulating panel is disposed outdoors. In doing so, it is constructed as follows. A large number of heat insulation panels are temporarily fixed to one side of the concrete formwork with nails or the like, and a concrete is cast between the multiple heat insulation panels arranged side by side and the other concrete formwork, After the concrete has hardened, the pair of concrete forms are removed. Thereby, the heat insulating panel is attached to the concrete wall or the like at the time of placing the concrete.

In order to further simplify the 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 a concrete formwork. With such a construction method, there is an advantage that it is not necessary to remove one of the formwork after the concrete is cast, and the construction is simplified.

However, there is no method utilizing both the above-described water-permeable formwork method and the method using this formwork and heat-insulating panel. As a result, the durability of the concrete wall is improved, and the concrete with the heat-insulating panel is improved. Wall decoration
Engineering is not possible to both achieve and it is simple, in the building industry, the advent of method that can be utilized both of these advantages have been desired.

[0008]

This invention has been made in view of the above-described circumstances, and can utilize both a water-permeable formwork method and a method using a heat-insulating panel that also serves as a formwork. In addition to improving the durability of the concrete wall by discharging the moisture of the concrete, it is possible to provide a concrete wall with a heat insulating panel while the construction is simple, and the water permeability is sufficiently reinforced. An object of the present invention is to provide a heat insulating panel that also serves as a formwork.

[0009]

SUMMARY OF THE INVENTION In order to achieve this object, a formwork / heat insulation panel with water permeability according to the present invention is disposed opposite to one concrete formwork when constructing a concrete wall with a heat insulation panel. In a heat-insulating panel that also serves as a mold, a heat-insulating material having a predetermined heat-insulating performance and a sheet-like reinforcing material that is joined to at least one side of the heat-insulating material and plays a role of reinforcing the heat-insulating material. The heat insulating material has a plurality of discharge holes for discharging the moisture of the concrete before hardening, and the reinforcing material also has a hole for discharging the water of the concrete, whereby the water permeation performance is improved. It is also characterized by having.

According to the form and heat insulating panel with water permeability according to the present invention, the heat insulating material and the reinforcing material of the heat insulating panel include:
Since a plurality of discharge holes and holes are formed for discharging the moisture of the concrete before it is cast and hardened, it is placed facing this formwork / insulation panel and a general concrete formwork to drive concrete. If it is provided, it is possible to remove the moisture of the concrete before hardening through the discharge holes and the holes.
Therefore, a concrete wall excellent in durability performance can be provided. In addition, since the heat insulating panel is also used as a formwork, it is possible to provide a concrete wall with a heat insulating panel while simplifying construction . In other words, it is possible to utilize both the water-permeable formwork method and the method using the formwork and heat-insulating panel, and to provide a concrete wall with a heat-insulating panel that is durable and simple in construction .

In addition, since the heat insulating material is reinforced by the sheet-like reinforcing material, the heat insulating panel can sufficiently withstand the pressing force of the poured concrete pressing the heat insulating panel when the concrete and formwork is used. .

[0012]

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view including a partially cut-away cross section of a heat-insulating panel that also has a water-permeable property according to an embodiment of the present invention. FIG. 2 is a cross-sectional view during construction when a concrete wall with a heat insulating panel is constructed using the present heat insulating panel.

As shown in FIG. 1, first, a formwork / heat insulating panel 1 having water permeability according to the present embodiment is provided with a heat insulating material 2 having a predetermined heat insulating performance and heat insulating materials joined to both side surfaces of the heat insulating material. And a pair of sheet-like reinforcing members 3 serving to reinforce the sheet. When the pair of reinforcing members 3 are provided on both side surfaces of the heat insulating material 2, it is preferable that the pair of reinforcing members 3 be provided on both side surfaces because warpage of the heat insulating material 3 can be prevented. There is no need to provide it, and it may be provided on at least one side only.

The heat insulating material 2 is made of, for example, a synthetic foamed resin. As the heat insulating material made of the foamed synthetic resin, for example, hard foamed polystyrene, hard foamed polyurethane, foamed polypropylene, or the like is preferable. Other heat insulating materials having a predetermined heat insulating performance include, for example, a quasi-incombustible or higher material made of a foam containing a vinyl chloride resin containing an inorganic filler or a chlorinated vinyl chloride resin as a main component. There is heat insulation. In this case, there is an advantage that not only heat insulation performance but also fire resistance performance and light weight are excellent. Further, as another heat insulating material, for example, a heat insulating material formed of acrylic resin, vinyl chloride, phenol resin, or the like may be used. However, the material of the heat insulating material 2 is not limited to the above. For example, a density of 25 to 35 kg /
Extruded polystyrene of m ³ can be used as a mold with a thickness of about 25 mm. Further, in the case of urethane foam having a density of 30 to 40 kg / m ³ in which kraft paper or the like is stuck on both sides, it is used as a mold having a thickness of about 20 mm. The vertical interval in this case is about 100 to 150 mm.

In this embodiment, when used as a concrete form, a large number of discharge holes 10 for discharging moisture and air from fresh concrete are formed at predetermined intervals on the side surface of the heat insulating material 2. I have. This discharge hole 1
0 is preferably formed at an oblique angle to the horizontal direction as shown in FIGS. Thereby, the water from the concrete can be effectively discharged as water permeation. The inclination angle is 0 to 60 degrees with respect to the horizontal direction, and is preferably 5 to 30 degrees in consideration of drilling. However, in the case where the work of perforating such an inclined hole in the heat insulating panel is complicated, even if the discharge hole 10 is perforated in the horizontal direction, water can be sufficiently discharged as water permeation. You may have. This case is also included in the scope of the present invention.

Next, such a discharge hole 10 is provided in the heat insulating material 2.
Although a large number of discharge holes 10 are formed at predetermined intervals on the side surface, forming a large number of discharge holes 10 is convenient for discharging water, but has a problem in that heat insulation performance is deteriorated.
Therefore, the thickness T of the heat insulating material 2, the interval X between the discharge holes 10, and the hole diameter φY of the discharge holes 10 are preferably as follows.

When the thickness T of the heat insulating material 2 is 15 mm or more, preferably 50 mm or more, the interval X between the discharge holes 10 is 5
cm to 30 cm, preferably 10 cm to 15 cm
It is. When the hole diameter φY of the discharge hole 10 is small, it is difficult to discharge water due to surface tension. On the other hand, when the hole diameter is large, there is a problem that the slack of concrete is discharged. , 5m
m to 6 mm.

The amount of water discharged from concrete also depends on the water-cement ratio of concrete. Therefore, the thickness T of the heat insulating material 2, the interval X between the discharge holes 10, and the hole diameter φY of the discharge holes 10 need to be determined according to the water cement ratio. For example, in an example of an experiment performed by the present inventor, when the general four-round compressive strength is 240 kg / cm ² , the thickness T
= 25 mm, the interval X between the discharge holes 10 = 10 to 20 mm,
With the hole diameter φY of the discharge hole 10 = 5 mm, water permeability of about 1 liter was obtained.

Further, the discharge holes 10 may be formed at predetermined intervals on the entire side surface of the heat insulating material 2 or formed at predetermined intervals on at least a part of the side surface of the heat insulating material 2. There may be. In short, it is only necessary that the necessary amount of water can be discharged from the concrete and the heat insulation performance is not deteriorated.

The reinforcing material 3 serves to reinforce the heat insulating material 2 when the present heat insulating panel is used as a concrete formwork. It has enough strength to withstand enough.

Further, the reinforcing material 3 is also formed of a material having a filter function of permeating water to discharge moisture and air from fresh concrete. For example, a woven fabric having water permeability, a nonwoven fabric having water permeability, a polyethylene film (for example, φ1 mm to φ10
mm), net (□ 1mm ~ □ 10
having a pore size of mm).

In order to join the reinforcing material 3 to the heat insulating material 2,
When the reinforcing material 3 is a woven fabric, a nonwoven fabric, or the like, the reinforcing material 3 is joined by a binder such as an adhesive. When the reinforcing material 3 is the above-mentioned polyethylene film, net or the like, it is joined by heat lamination or the like.

Further, as described above, this reinforcing material 3
The heat insulating material 2 may be provided on both side surfaces, or may be provided only on one side surface. In short, it is only necessary that the heat insulating panel 1 be configured to have a strength that allows the cast concrete to sufficiently withstand the pressing force pressing the heat insulating panel 1. Further, the materials of the above-described reinforcing member 3 are merely examples, and are not limited to these.

Next, with reference to FIG. 2, an example of construction when a concrete wall with a heat insulating panel is constructed using the heat insulating panel 1 according to the present embodiment will be described. FIG. 2 illustrates a case where the heat insulating panel 1 is installed on the indoor side of a building wall.
First, the external form 21 is provided, and the external form 2
A heat insulating panel 1 as a concrete combined formwork is provided so as to pass through the area 1. Next, the form tie 24 is used to maintain the space between the external formwork 21 and the heat insulating panel 1 at a predetermined distance, and the vertical flap 22 and the horizontal flap 23 are disposed outside the external formwork 21 and the heat insulating panel 1.
Fix with 5. Thereby, concrete 26 is cast between the outer formwork 21 and the heat insulating panel 1, whereby
Build concrete walls with insulating panels. After that, the external formwork 21, the foam tie 24, the fastening fitting 25, etc. may be removed. As described above, since the heat insulating panel 1 also serves as the internal form, it is not necessary to install and remove one form, so that the construction process can be simplified.

As described above, in the present embodiment, the discharge hole 10 is formed in the heat insulating material 2 which also serves as a mold, and the reinforcing material 3 is formed of a material having water permeability. In the example shown in FIG. 2, water and air are first discharged from the fresh concrete through the perforations of the reinforcing material 3, then discharged through the discharge holes 10 of the heat insulating material 2, and further discharged from the reinforcing material 3 on the outside. Exhausted through the porosity. Therefore, while the concrete is in a fresh state, surplus water in the concrete can be naturally spontaneously discharged from the discharge holes 10 of the heat insulating material 2 having water permeability and the pores of the reinforcing material 3, As a result, cross-section defects due to residual air bubbles are less likely to occur, the water-cement ratio of the surface layer of the concrete is reduced, and a dense and dense layer of the paste is formed near the surface, so that it is difficult for carbon dioxide gas and salt to enter from outside. The protection performance of the internal reinforcing steel can be enhanced, and the durability of the concrete wall can be improved.

In the example shown in FIG. 2, since the reinforcing member 3 is provided on the concrete side, there is a possibility that the bonding between the heat insulating member 2 and the concrete wall 26 may be deteriorated. In the present embodiment, however, the cast concrete slough penetrates into the heat insulating material 2 through the reinforcing material 3, so that the bonding between the heat insulating panel 1 and the concrete wall 26 can be made sufficient. . Therefore, since it is a heat insulation panel which also serves as a formwork, it is possible to provide a concrete wall with a heat insulation panel while simplifying construction .

[0028] From the above, to provide a water-permeable mold method, and a method of using formwork combined insulation panels together can take advantage, the insulation panels with concrete walls, yet durable there and construction is simplified Can be.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified. In particular, it is needless to say that the present invention is not limited to what is not limited in the specification.

[0030]

[Effects of the Invention] As described above, in the present invention, the water of concrete before being poured and hardened is applied to the heat insulating material and the reinforcing material.
Since a plurality of discharge holes and perforations for discharging the components are formed, if this mold / insulation panel is placed opposite to a general concrete form and concrete is poured, through the discharge holes and perforations The moisture of the concrete before hardening can be removed. Therefore, a concrete wall excellent in durability performance can be provided. In addition, since the heat insulating panel is also used as a formwork, it is possible to provide a concrete wall with a heat insulating panel while simplifying construction . In other words, it is possible to utilize both the water-permeable formwork method and the method using the formwork and heat-insulating panel, and to provide a concrete wall with a heat-insulating panel that is durable and simple in construction .

Further, since the heat insulating material is reinforced by the sheet-like reinforcing material, the heat insulating panel can sufficiently withstand the pressing force of the cast concrete pressing the heat insulating panel when the concrete and formwork is used. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view including a partially cut-away cross section of a formwork / heat insulation panel with water permeability according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view during construction when a concrete wall with a heat insulating panel is constructed using the present heat insulating panel.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Insulation panel that also serves as a formwork with water permeability 2 Insulation material 3 Reinforcement material 10 Drain hole

Claims (4)

(57) [Scope of request for utility model registration] When a concrete wall with a heat insulating panel is constructed, a heat insulating panel which is disposed opposite to one concrete form and is also used as a concrete form is provided. A heat insulating material having performance and a sheet-like reinforcing material which is joined to at least one side of the heat insulating material and serves to reinforce the heat insulating material, wherein the heat insulating material discharges moisture of concrete before hardening. A plurality of discharge holes for discharging the concrete, and the reinforcing member also has a hole for discharging the water of the concrete, thereby having a water-permeability. . 2. The discharge hole according to claim 1, wherein the discharge hole is formed at a predetermined interval over the entire side surface of the heat insulating material.
A formwork / heat-insulating panel with water permeability described in 4. 3. The heat-insulating panel as claimed in claim 1, wherein the discharge holes are formed at predetermined intervals on at least a part of a side surface of the heat insulating material. 4. The discharge hole according to claim 1, wherein the heat insulating panel is formed so as to form an oblique angle with respect to a horizontal direction when the heat insulating panel is vertically arranged as a concrete formwork. 4. The heat-insulating panel for formwork with water permeability according to any one of 3.