JP3938533B2 - Construction method of inner heat insulation composite wall by simultaneous placing of concrete - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for constructing an inner heat insulating composite wall by simultaneous placing of concrete.
[0002]
[Prior art]
Conventionally, as a method of forming a heat insulating composite wall from concrete and a heat insulating panel made of a heat insulating material and a base material in a building, there is a so-called simultaneous driving method disclosed in Japanese Patent Application Laid-Open No. 2001-11992. Such method is, at a distance in the building site pouring concrete between the arranged formwork and insulation panels, formwork is removed after the concrete solidifies, so as to obtain a heat-insulating composite wall consisting of concrete and insulation panels Yes (see Patent Document 1).
[0003]
Moreover, in the construction method disclosed in the above publication, since there is a risk that the heat insulation panel may be deformed by the pressure of the concrete when the concrete is driven, generally, a method of disposing a panel as a mold further outside the heat insulation panel. Is being done on site. As shown in FIG. 5, the heat insulation panel 1 is a multilayer panel which consists of the surface material 1a which consists of a fiber reinforced cement board, and the heat insulation material 1b. The heat insulating panel 1 is arranged so that the surface material 1a faces the indoor (indoor) side. Then, on the outdoor (outdoor) side of the heat insulating panel 1, a panel 3 made of plywood is arranged as an outdoor formwork at a predetermined interval from the heat insulating material 1 b of the panel 1, and the surface material 1 a of the heat insulating panel 1 is arranged. A panel 5 made of plywood is brought into contact with the surface as an indoor mold. Further, a plurality of vertical slats 7 and horizontal slats 9 are erected on the outside of each of the control panels 3 and 5, and a plurality of foam ties 11 are used to form the control panels 3 and 5 and the vertical slabs 7 and horizontal slabs. 9 is held. Next, the concrete 13 is poured between the outdoor panel 3 and the heat insulating material 1b of the heat insulating panel 1 , and after the concrete is solidified, the panel 3, 5, the vertical flat 7, the horizontal flat 9, and the foam tie 11 are removed. and, Ru Tei give inner heat insulating composite wall consisting of concrete 13 and the insulation panel 1 Tokyo (see non-Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-11992 (page 2, FIG. 1)
[Non-Patent Document 1]
Catalog of A & A Materials Co., Ltd. “Construction Procedure for Insulated Formwork”, February 1st, 2002 (Cover and 1st to 5th pages)
[0005]
[Problems to be solved by the invention]
However, in the existing method shown in FIG. 5, when cutting the heat insulating panel 1, cutting powder may be scattered during pre-cutting at a factory or cutting at a building site. Further, the control panel 3 and 5, and water and excess water due to the concreting, soluble components control panel in 3,5 has Tsu when there eluted into the control panel outside. At this time, deposition soluble components eluted from control panel 5 of the indoor side to the indoor side of the surface of the surface material 1a, steeped in, but may sometimes colored indoor side surface of the surface material 1a, the surface material 1a is After the composite wall is completed and the indoor panel 5 is removed, it functions as an indoor finishing material. Therefore, the above coloring is an undesired problem in terms of aesthetics and design. The control panel is an on-site term in the construction / civil engineering industry, and mainly means plywood used for formwork.
[0006]
Therefore, the present invention has been made in view of the above-described problems, and it is possible to use a composite panel that can reduce dust scattering during cutting processing and to suitably maintain the function as a finishing material. Another object of the present invention is to provide a method for constructing an inner heat insulating composite wall by simultaneously placing concrete.
[0007]
[Means for Solving the Problems]
To achieve the above object, the construction method of the inner heat insulating composite wall according to concrete simultaneous implantation of the present invention, a heat insulating material, and a surface material made of fiber-reinforced cement plate bonded to the insulation material, the surface of the surface material providing a heat-insulating panel having a sticking surface protective film, the insulating panel is cut into a desired size, surface materials of the insulating panels are arranged to direct the indoor side, in the surface material with arranging the indoor side control panel consisting of plywood as attached surface protective film and the contact, the insulation and holding the predetermined distance to place the outdoor side control panel consisting of plywood, these indoor and chamber the outer control panel, is held by their control panel holding means disposed outwardly, driving the concrete between the chamber outer control panel and the heat insulating material, the concrete has solidified On the control panel holding means, the removal of the interior side and exterior side control panel, the surface protective film is removed from the surface material and to obtain a inner heat-insulating composite wall.
[0008]
Preferably, the surface protective film are those having an adhesion 4~8N per 25mm width.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the case where the construction method of the inner heat insulating composite wall by simultaneous placing of concrete according to the present invention is applied to the formation of the inner heat insulating composite wall provided in a public works building such as a terminal treatment plant equipped with an RC structure will be described. FIG. 1 is a longitudinal section of a heat insulation panel used in the method of the present invention . Insulating panel 21 is provided with a heat insulating material 23, on the interior surface of such heat insulating material 23, it is bonded surface member 27 via an adhesive layer 25. In this embodiment, the heat insulating material 23 is made of a material such as material or wood wool plate having a thickness of 20mm or more foamed polyethylene. On the other hand, the surface material 27 is made of a fiber reinforced cement board having a thickness of 3 to 12 mm, preferably 6 mm.
[0010]
Furthermore, a surface protective film 29 having a thickness of 20 to 80 μm is attached to the indoor surface of the surface material 27 by pressure bonding with a roller. Selection of such thickness is, for example, if the thickness exceeds 80μm, the crimping rollers becomes difficult, when the thickness is less than 20μm, when pasting the surface protective film 29 on the surface material 27 This is to prevent deterioration of workability. The surface protective film 29 is composed of the outdoor provided on side adhesive layer 31 and provided in the indoor side substrate layer 33. The base material layer 33 is made of a polyethylene-based or polyolefin-based material. On the other hand, the adhesive layer 31 is made of a rubber-based or acrylic material. And the adhesion layer 31 has the adhesive force of 4-8N per 25 mm width. The measurement of the adhesive force is performed in the manner shown in FIG. First, a U-shaped cutout having a width of 25 mm and a length of 100 mm is provided on the base material layer adhered by the adhesive layer, and the measurement portion that can be raised by the cutout is inserted through the clip. Connect the tension gauge. Then, the tension gauge is pulled upward at a speed of about 200 mm / min, and the value of the gauge scale when stabilized is used as the adhesive force.
[0011]
The adhesive force of the adhesive layer 31 is set in the above range in consideration of the following points. That is, when the adhesive strength of the pressure-sensitive adhesive layer 31 exceeds 8N per 25 mm width, when the surface protective film 29 is peeled off from the surface material 27 as described later, the surface layer portion of the surface material 27 may be peeled off together. On the other hand, when the adhesive force of the pressure-sensitive adhesive layer 31 is less than 4N per 25 mm width, the adhesive force between the surface protective film 29 and the surface material 27 is insufficient, and the protective film may be peeled off from the surface during construction. Because there is .
[0012]
Next, a method for constructing an inner heat insulating composite wall by simultaneous placing of concrete using the heat insulating panel 21 configured as described above will be described. First, the heat insulation panel 21 having the configuration as shown in FIG. 1 is cut in advance into a necessary size at a factory or at a construction site. At this time, if the surface material made of the fiber reinforced cement board is exposed to the outside, the cutting powder may be scattered at the time of cutting, but according to the method of the present invention, the surface material 27 made of the fiber reinforced cement board is the surface. By covering with the protective film 29, generation | occurrence | production of the cutting powder at the time of a cutting | disconnection can be reduced significantly.
[0013]
Next, as shown in FIG. 3, the heat insulation panel 21 cut to an appropriate size is arranged so that the surface protection film 29 of the surface material 27 faces the indoor side, and contacts the surface protection film 29. The indoor panel control panel 35 is arranged so as to contact. In addition, an outdoor panel 37 is arranged on the outdoor side of the heat insulating panel 21 with a predetermined distance from the outdoor surface of the heat insulating material 23. Incidentally, according both control panel 35 and 37, consists of plywood as with existing ones, is assumed to be made of wood.
[0014]
Further, each of the outdoor side surface of the beauty chamber outer control panel 37 Oyo interior side surface of the indoor side control panel 35, the vertical flap 39 extending vertically arranged so as to abut, further laterally outwardly of the longitudinal flap 39 A lateral tab 41 extending in the direction is arranged. Then, these control panel 35 and 37 so as to suitably held against the insulating panel 21, and sets the vertical flap 39 and the lateral flap 41 and form tie 43. That is, the vertical cover 39, the horizontal cover 41, and the foam tie 43 are means for holding the control panels 35 and 37. Thereafter, the concrete 45 is poured between the outdoor control panel 37 and the heat insulating panel 21.
[0015]
After the concrete 45 has solidified by removing the form tie 43, the horizontal flap 41, the vertical flap 39 and both control panel 35 and 37, as shown in FIG. 4, consisting of concrete 45 to the outdoor side It includes an outer wall to obtain a heat-insulating composite wall 47 within which is provided a heat insulating member 23 and the surface member 27 on the indoor side. By the way , at the time of placing concrete, moisture such as surplus water from concrete or water applied for drying prevention is absorbed by the panel boards 35 and 37 made of plywood , and soluble components are eluted from the inside of the panel boards 35 and 37. Sometimes. However, in the process of the present invention, between the surface material 27 which functions as a finishing material indoor control panel 35, to a surface protective film 29 is provided, the soluble component is eluted from the control panel 35 as well, such a soluble component is attached to the surface member 27, the Rukoto to color the surface member 27 is prevented. Accordingly, as shown in FIG. 4, the end of the construction, by peeling off the surface protective film 29 that covers the interior surface of the surface material 27, heat insulating composite inner equipped with aesthetically suitable surface finish to the indoor side A wall 47 can be obtained.
[0016]
As described above, the adhesive strength of the surface protective film used in the present invention is in the range of 4 to 8 N (hereinafter referred to as “N / 25 mm”) per 25 mm width. In order to clarify the relationship with construction defects, construction was performed under the following conditions.
[0017]
Example 1.
Hitachi Chemical Co., Ltd.'s Hitachilex (registered trademark) CL-5150D (thickness: 60 μm) having an adhesive strength of 8 N / 25 mm is used as the surface protective film, and the surface material is non-asbestos fiber manufactured by A & A Materials Co., Ltd. When a reinforced cement plate (thickness 6 mm) was used and the construction was carried out by the above method, the surface protective film was not peeled off during the construction, and the state of adhesion to the surface material was maintained well. Further, when the surface protective film was peeled off after the concrete was cast, the surface layer portion of the surface material was not peeled off together. Further, no coloring on the surface of the surface material was observed.
[0018]
Example 2
As a surface protective film, DE-500H (thickness 45 μm) manufactured by Sumilon Co., Ltd. having an adhesive strength of 5 N / 25 mm is used, and as a surface material, the same fiber reinforced cement board as in Example 1 is used. As a result of the construction by the method, the same result as in Example 1 was obtained. The workability tended to be better than that of Example 1.
[0019]
Comparative Example 1
As the surface protection film, Sekisui Chemical Co., Ltd. protection tape # 6318-B (thickness 60 μm) having an adhesive strength of 3.9 N / 25 mm is used, and the same surface material as in Example 1 is used. And when it constructed by said method, adhesion to a surface material was not enough, and a part of surface protection film might peel from a surface material. Moreover, coloring was confirmed to a part of surface of the surface material after concrete placement.
[0020]
Comparative Example 2
Both the surface protective film and the surface material were the same as in Example 1, and only the adhesive strength of the surface protective film was increased to 8.2 N / 25 mm, and the construction was performed by the above method. upon the release of the surface protection film, fluff the fibers of the surface material occurs, tends to peel off to the surface layer of the surface material is seen.
[0021]
【The invention's effect】
As described above, according to the construction method of the inner heat insulating composite wall according implantation concrete simultaneous present invention, it is Rukoto greatly reduce dust scattering during cutting of the insulating panel, noted and, control panel consisting of plywood Even if it uses, since the coloring to the surface material of the heat insulation panel of the soluble component eluting from a plywood can be prevented, it becomes possible to make the surface material fully fulfill | perform the function as a finishing material .
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a configuration of a heat insulating panel used in a method for constructing an inner heat insulating composite wall by simultaneous placing of concrete according to the present invention.
FIG. 2 is a diagram for explaining a measurement mode of the adhesive strength of a surface protective film used in the method of the present invention.
FIG. 3 is a longitudinal sectional view at the time of concrete placement in the method for constructing an inner heat insulating composite wall by simultaneous concrete placement according to the present invention.
FIG. 4 is a longitudinal sectional view showing a state in which a panel is removed and a surface protective film is removed after concrete placement in the method for constructing an inner heat insulating composite wall by simultaneous concrete placement according to the present invention.
FIG. 5 is a perspective view showing a method of constructing an inner heat insulating composite wall by existing concrete simultaneous driving.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 21 ... Thermal insulation panel, 23 ... Thermal insulation material, 27 ... Surface material, 29 ... Surface protection film, 35 ... Indoor side panel, 37 ... Outdoor panel, 39 ... Longitudinal flatness (compane holding means), 41 ... Flattened ( Control panel holding means), 43 ... foam tie (control panel holding means), 45 ... concrete, 47 ... inner heat insulating composite wall.

Claims (2)

And the heat insulating material, and a surface material made of fiber-reinforced cement plate bonded to the insulation, the insulation panel with a surface protective film attached on the surface of the surface material was prepared,
Cut this heat insulation panel to a desired size and place it so that the surface material of the heat insulation panel faces the indoor side,
Arrange the indoor panel made of plywood to contact the surface protective film affixed to the surface of the surface material , and arrange the outdoor panel made of plywood while maintaining a predetermined distance from the heat insulating material,
These indoor side and outdoor side control panel, is held by the control panel holding means disposed on their outer,
Concrete is driven between the heat insulating material and the outdoor panel,
After the concrete has solidified, the control panel holding means, the indoor side and outdoor side control panel is removed,
Wherein the surface protective film is removed from the surface material, construction method of the inner heat insulating composite wall according implantation concrete simultaneous where acquire an insulation composite wall. The method for constructing an inner heat insulating composite wall according to claim 1, wherein the surface protective film has an adhesive force of 4 to 8 N per 25 mm width.

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