JP2010185187A - Outside heat insulation construction method and outside heat insulation concrete wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outside heat insulation construction method for constructing an outside heat insulation concrete wall easily at lower cost by use of a calcium carbonate foam board as a heat insulating material serving also as a form. <P>SOLUTION: In this outside heat insulation construction method, the form 20 is formed by bringing a plurality of heat insulation panels serving also as the form onto an outdoor side, concrete 31 is poured into the form thus formed, and hardening the poured concrete to construct the concrete wall being integral with the heat insulation panels serving also as the form. The calcium carbonate foam board 10 having no reinforcing rib is used as it is as the heat insulation panel serving also as the form. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outer heat insulating construction method and an outer heat insulating concrete wall for constructing an outer heat insulating concrete wall integrated with a formwork combined heat insulating panel.

  As a means for energy saving of a building, a heat insulating plate is attached to the outdoor side of a concrete wall to form an external heat insulating concrete wall. As the heat insulating plate, a synthetic resin foam such as expanded polystyrene or a calcium carbonate-based foamed plate is used in terms of heat insulating properties and moisture resistance. In order to simplify the construction, an external heat insulation method using a heat insulating panel for a formwork in which a face material such as a plywood or a pier is attached to one surface of the heat insulating plate is also employed.

  Patent Document 1 describes an outer heat insulating method using a calcium carbonate foam plate as a mold and heat insulating plate. In the outer heat insulating method, when a concrete wall is constructed, calcium carbonate reinforced with reinforcing ribs is described. After forming a formwork using an outdoor foam board as a dam plate and placing concrete in the formwork, the surface of the calcium carbonate foam board is mortared or tiled with mortar, etc. The finishing material is fixed. Further, a reinforcing rib made of hard wood cement is used as the reinforcing rib.

Japanese Patent No. 3785134

  In the case of using a calcium carbonate-based foamed plate as a mold and heat insulating plate for external heat insulation, it has been conventionally understood that the calcium carbonate-based foamed plate is reinforced with reinforcing ribs. Also in the outer heat insulating method, a reinforcing rib made of hard wood cement is used as the reinforcing rib. However, attaching a reinforcing rib to a calcium carbonate foam plate requires a difficult operation, and the calcium carbonate foam plate as a heat insulating plate becomes heavier as much as the reinforcing rib is attached. Mechanical assistance is required. For this reason, the conventional outer heat insulation method has a high cost and is not necessarily an easy construction method.

  This invention is made | formed in view of the above situations, and makes it possible to construct the outer heat insulation construction method using a calcium carbonate-type foam board as a formwork and heat insulating material at a lower cost and more easily. This is the issue.

  In order to solve the above-mentioned problems, the inventors of the present invention have repeatedly conducted many experiments on an outer heat insulation method using a calcium carbonate foam plate as a mold and heat insulating material. It has a high resistance to the above, and a calcium carbonate foam plate having the same area and thickness as a calcium carbonate foam plate that has been used with a reinforcing rib is used as a formwork insulation without attaching a reinforcing rib. It has been found that even if used as a formwork heat insulating plate for external heat insulation, it has sufficient strength to withstand practical use.

  The present invention has been made on the basis of the above knowledge obtained through experiments by the present inventors, and the outer heat insulation method according to the present invention is used to construct a plurality of sheet-form combined heat insulation panels when constructing a concrete wall. In the outer heat insulation construction method, a mold is formed so that is on the outdoor side, concrete is poured into the formed mold, and the poured concrete is cured to construct a concrete wall that is integrated with the heat insulating panel that also serves as the mold The calcium carbonate foam plate having no reinforcing ribs is used as the mold and heat insulation panel.

  In the construction method according to the present invention, a calcium carbonate-based foamed plate having no reinforcing rib as a formwork and heat insulating panel, that is, a commercially available calcium carbonate-based foamed plate can be used as it is. Work related to the reinforcing rib such as manufacture and attachment can be omitted, and construction at low cost is possible. Further, the calcium carbonate-based foam plate itself is a lightweight material, and the assembly of the mold can be completed manually by the operator without using a machine such as a heavy machine, so that the mold assembly is facilitated. Further, when a reinforcing rib made of a material such as hard wood cement is used together with a calcium carbonate foam plate, dust from the reinforcing rib may be generated and the working environment may be deteriorated. The heat insulation method can also eliminate that concern.

  In the outer heat insulating method according to the present invention, a calcium carbonate foam plate having in-plane concave grooves into which the concrete poured into the mold can enter can also be used as the mold and heat insulating panel. It is more preferable that the cross section is a concave groove having a dovetail shape. In this aspect, the concrete that has entered and hardened in the groove can have a higher bonding force between the concrete wall and the calcium carbonate foam plate that is a heat insulating panel that also serves as a formwork. It is possible to prevent the foamed plate from peeling from the concrete plate.

  In the outer heat insulation construction method according to the present invention, a calcium carbonate foam plate having a grooved surface on the end is used as a formwork combined heat insulation panel, and a calcium carbonate foam plate adjacent to the processed groove by inserting a joint material. It is a more preferable aspect to build in the outdoor side. In this aspect, the connection between the adjacent calcium carbonate foam plates is stabilized, and it is possible to reliably prevent the flow of the concrete poured into the mold from flowing out to the surface side of the mold-heat insulating panel. .

  In the outer heat insulation construction method according to the present invention, a mold / heat insulation panel having a two-layer structure in which a calcium carbonate foam plate without reinforcing ribs is attached with an adhesive can also be used as the mold / heat insulation panel.

  Since the calcium carbonate foam plate used in the present invention does not have a mold on the surface, it is very easy to laminate two calcium carbonate foam plates in a two-layer structure using an adhesive. Furthermore, a thin calcium carbonate foam board is relatively inexpensive, and a mold / heat insulation panel having a required thickness is obtained by a two-layer structure of a thin calcium carbonate foam board, thereby producing a mold / heat insulation panel. Cost can be reduced.

  The present invention also discloses an external heat insulating concrete wall characterized in that a calcium carbonate foam plate having no reinforcing ribs is integrally attached to the outdoor side of the concrete wall.

  In the present invention, since the calcium carbonate-based foam plate having no reinforcing rib is used as the heat-insulating panel for both the formwork and the outer heat-insulating method using the calcium carbonate-based foam plate as the heat-insulating material for the formwork that has been conventionally used. Thus, it is possible to perform the construction more easily at a lower cost.

The figure for demonstrating the outer heat insulation construction method by this invention. The expanded sectional view of the principal part. The elevation view for demonstrating an example of the calcium carbonate type | system | group foam board as a formwork combined heat insulation panel used with the outer heat insulation construction method by this invention. The side view for demonstrating the other example of the calcium carbonate type | system | group foam board as a formwork combined heat insulation panel used with the outer heat insulation construction method by this invention.

Hereinafter, the construction method using the heat insulating panel for formwork according to the present invention will be described with reference to the drawings.
In FIG. 1, 10 is a calcium carbonate type | mold foam board which does not have a reinforcement rib used as a formwork combined heat insulation panel, and this form 20 is formed by making this calcium carbonate type | mold foam board the outdoor side. In the mold 20, on the opposite side (indoor side) of the calcium carbonate-based foam plate 10, an indoor dam plate (companion) 22 made of plywood or the like is erected in a state where a predetermined distance is secured by the separator 21. A heat insulating pad 23 having a shaft foot is attached to a position of the separator 21 that contacts the inside of the calcium carbonate foam plate 10, and a home tie 24 is connected to the shaft foot of the heat insulating pad 23. A home tie 24 is directly connected to the opposite end of the separator 21.

  A vertical clamp steel pipe 25 and a horizontal clamp steel pipe 26 are respectively attached to the outdoor side of the calcium carbonate foam plate 10 and the indoor side of the panel 22, and by inserting a fastener 27 into the home tie 24, the calcium carbonate foam plate The mold 20 is formed in a state where a concrete pouring space 30 having a width defined by the length of the separator 21 is secured between the panel 10 and the panel 22. In addition, this formwork 20 may be the same as the formwork for a conventionally known outer heat insulation method, except that the calcium carbonate-based foamed plate 10 having no reinforcing rib is used as a formwork and heat insulation panel. The illustrated one is an example, and the present invention is not limited to this.

  With reference to FIG. 2 and FIG. 3, an example of the calcium carbonate type | mold foam board 10 which does not have a reinforcement rib as a formwork combined heat insulation panel by this invention is demonstrated. In this example, the calcium carbonate foam plate 10 has a rectangular shape with a thickness D: 32 mm or more, a height H: 1800 mm, and a width W: 900 mm. A joint insertion groove 11 having a depth of about 20 mm is formed. Further, a plurality of dovetail grooves 12 (six in the figure) are formed in the horizontal direction on the back surface at intervals S of about 300 mm. The concave groove 12 may have a width of the entrance portion of 20 mm, a bottom surface width of 30 mm, and a depth of about 5 mm.

The calcium carbonate foam plate 10 preferably has a density of 70 kg / m ³ , a compressive strength of 0.17 N / mm ² , a bending strength of 0.51 N / mm ² and a bending elastic modulus of about 23.3 N / mm ^2. it can. As a specific example, for example, a lock cell board (trade name of Fuji Kasei Kogyo Co., Ltd.) can be mentioned.

  A plurality of calcium carbonate-based foam plates 10 are used to form a heat insulating panel that also serves as a formwork. At that time, the adjacent calcium carbonate-based foam plates 10 and 10 have both joint insertion grooves formed on the end of the tree. 11, a joint (not shown) having a width that can enter the joint 11 is inserted into the joint insertion grooves 11, 11.

  After the mold 20 is formed, the concrete 31 is poured into the concrete pouring space 30 by the usual method. As shown well in the enlarged view of FIG. 2, the concrete 31 also enters the concave groove 12 formed on the back surface of the calcium carbonate foam plate 10, and the whole is cured in this state. At that time, a joint is interposed between the joint surfaces of the adjacent calcium carbonate foam plates 10, 10, so that the concrete will not ooze out to the outdoor side of the calcium carbonate foam plates 10.

  After the concrete 31 is cured, the fastener 27 is removed, the horizontal steel pipe 26 and the vertical steel pipe 25 are removed, and the panel 22 is removed, whereby the calcium carbonate system having no reinforcing rib on the outdoor side of the concrete wall 31 according to the present invention. An outer heat insulating concrete wall to which the foam plate 10 is integrally attached is formed. As described above, in this outer heat insulating concrete wall, the concrete 31 enters the concave groove 12 formed on the back surface of the calcium carbonate foam plate 10 and hardens, and the calcium carbonate foam plate 10 is peeled off from the concrete wall 31. It is suppressed to do.

  In an actual building, an appropriate surface decorative material is attached to the surface of the calcium carbonate-based foamed plate 10 that is the outdoor side of the formed external heat insulating concrete wall. Since the calcium carbonate-based foam board 10 does not have other members such as reinforcing ribs on the outdoor side, there is an advantage that the surface decorative material can be attached to any position by any method.

  Furthermore, in the outer heat insulation construction method according to the present invention, the calcium carbonate foam plate 10 having no reinforcing ribs, that is, the commercially available calcium carbonate foam plate 10 can be used as it is as a mold and heat insulation panel. Can be constructed. Further, the calcium carbonate foam plate 10 itself is a lightweight material, and the assembly of the mold 20 can be completed manually by an operator without using a machine such as a heavy machine. Become.

  In the outer heat insulation method according to the present invention, when the construction environment permits, a calcium carbonate foam plate having no joint insertion groove 11 or concrete poured into the mold 20 is used as the calcium carbonate foam plate 10. It is also possible to use a calcium carbonate-based foamed plate that does not have a recessed groove 12 to enter on the back surface.

  Furthermore, 10 A of calcium carbonate type foam boards as shown in FIG. 4 can also be used as a formwork combined heat insulation panel. The calcium carbonate foam plate 10A has a two-layer thickness D: 32 mm by, for example, laminating and laminating two calcium carbonate foam plates 10b and 10b having a thickness d: 16 mm using an adhesive. The calcium carbonate-based foam plate 10A. A thin calcium carbonate-based foamed plate is relatively inexpensive, and by using such a two-layer structure, it is possible to manufacture a mold / heat insulating panel having a required thickness at a lower cost. Further, since the calcium carbonate foam plate 10b does not have other members such as reinforcing ribs on the surface, it is easy to make a two-layer structure using an adhesive.

  Further, in the illustrated example, each calcium carbonate-based foam plate 10b has an abutment groove 13 formed on the end surface, and the calcium carbonate-based foam plates 10b adjacent in the vertical direction are joined together. Further, the two laminated calcium carbonate foam plates 10b and 20b are bonded and bonded together so that the gap between the two is shifted. By doing in this way, while being able to enlarge the tolerance with respect to the side pressure of 10 A of calcium carbonate-type foam boards, it can also prevent that the sludge of the poured concrete leaks out to the outdoor side of 10-A calcium carbonate-type foam boards. In addition, in the laminated calcium carbonate foam plate 10A, three or more calcium carbonate foam plates may be bonded and bonded, and calcium carbonate foam plates having different thicknesses are bonded together. May be.

10: Calcium carbonate-based foam plate used as a heat insulating panel also used as a mold,
11 ... Joint insertion groove,
12 ... concave groove,
20 ... formwork,
21 ... Separator,
22 ... Control panel,
25 ... Vertical steel pipe,
26 ... Lateral steel pipe,
30 ... Concrete pouring space,
31 ... Concrete, concrete wall.

Claims (5)

When constructing a concrete wall, form the formwork so that multiple sheets and heat insulation panels are on the outdoor side, pour concrete into the formed formwork, cure the poured concrete, and heat insulation for formwork In the outer insulation method of building a concrete wall integrated with the panel,
An outer heat insulating method characterized by using a calcium carbonate foam plate having no reinforcing rib as the formwork combined heat insulating panel.   2. The outer heat insulation method according to claim 1, wherein a calcium carbonate foam plate having in-plane concave grooves into which concrete poured as a formwork and heat insulation panel can enter is used.   The outer heat insulation method according to claim 1 or 2, wherein a calcium carbonate-based foamed plate having a grooved surface is used as a formwork and heat insulating panel, and a joint material is inserted into the processed groove. An external heat insulation method characterized by building adjacent calcium carbonate foam plates outdoors.   The outer heat insulation method according to any one of claims 1 to 3, wherein a calcium carbonate foam plate having no reinforcing rib is attached as a mold heat insulating panel with an adhesive to form a two-layer structure. An outer heat insulation method characterized by using a combined heat insulation panel.   An outer heat insulating concrete wall characterized in that a calcium carbonate foam plate having no reinforcing ribs is integrally attached to the outdoor side of the concrete wall.

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