JP2002129683A - Heat insulating panel-cum-form and external heat insulating concrete building using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the adhesive strength of a foamed heat insulating board and a cement panel in a heat insulating panel used as form in common, and manufactured by adhering the cement panel onto a surface of a polystyrene foamed heat insulating board, and increase the adhesive strength between the heat insulating panel used as form in common and a concrete wall in the external heat insulating concrete building. SOLUTION: Water composition layers thinner than the foamed heat insulating board and composed of a water resin emulsion and silica sand are formed on both side faces of the foamed heat insulating board made of polystyrene.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a concrete building in a predetermined position in advance, and also serves as a form used for filling the ready-mixed concrete thereafter. The present invention relates to a heat insulating panel for the outside of a building.

[0002]

2. Description of the Related Art Conventionally, a heat insulating panel for an outer surface of a building which also serves as a formwork is formed by bonding a cement-based panel to a polystyrene foam insulating plate with an adhesive. Due to the properties of the insulation board, the adhesive strength between the foam insulation board and the cement-based panel is insufficient. Therefore, when exposed to the wind or rain for a long time, or when heated in a fire, it is easy to peel off, Can not stand the use of.

[0003] Also, due to the nature of the surface of the foamed heat insulating board made of polystyrene, when that part is finished as a building surface,
There are limits to the method.

Further, due to the nature of the surface of the foamed heat insulating board made of polystyrene, the adhesive strength to the surface of the concrete building is weak. Therefore, it is necessary to use mechanical joining together to reinforce this, and the construction cost for that purpose is reduced. Increase.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to determine the adhesive strength between a polystyrene foam insulation panel and a cement panel in the conventional insulation panel for an outer surface of a building also serving as a formwork. An object of the present invention is to obtain a heat insulating panel for an outer surface having a sufficient adhesive strength.

Another object is to make it easy for tiles and the like used when finishing the surface of the outer side heat insulating panel to be the surface of a building to adhere thereto.

[0007] Still another object is to enhance the adhesive strength of the surface of the outer insulating panel to the surface of the concrete building so that it is not necessary to use mechanical joining means for supplementing the adhesive strength. Is to reduce the construction costs.

[0008]

According to the present invention, there is provided a heat insulating panel which also serves as a formwork, wherein an aqueous composition obtained by mixing an aqueous resin emulsion and silica sand is applied to both sides of a foamed insulating plate made of polystyrene. And a thickness of the aqueous composition layer is made smaller than that of the foamed heat insulating board.

[0009] In the outside heat-insulating concrete building using the formwork heat-insulating panel of the present invention, the outside of the concrete formwork is constituted by this heat-insulating panel, and the interior side thereof is constituted by a plywood. In the outer insulating concrete building formed by filling the space between the concrete with fresh concrete, curing it, and peeling the plywood on the indoor side of the concrete form from the hardened concrete, the heat insulating panel is made of polystyrene. A mixture of an aqueous resin emulsion and silica sand is applied to both sides of the formed foam insulation board, and an aqueous composition layer is formed thereon, and
The thickness of the aqueous composition layer is formed thinner than the thickness of the foamed heat insulating board.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, an embodiment of a heat-insulating panel which also serves as a formwork is provided on both sides 1a and 1b of a foamed heat-insulating plate 1 made of polystyrene. Composition 2a containing silica sand mixed in
And then drying it to form the aqueous composition layer 2 thereon, wherein the thickness t of the aqueous composition layer 2 is made smaller than the thickness T of the foamed heat insulating board 1. .

An embodiment of an external heat-insulating concrete building using the above-mentioned heat-insulating panel also serving as a formwork will be described. The outdoor side 10a of the concrete formwork 10 is constituted by a heat-insulating panel 3 also serving as a formwork. Inside 10b is plywood 5
The space 4 between the formwork and heat insulation panel 3 and the plywood 5 is filled with fresh concrete 6a, and the concrete wall 6 obtained by curing the concrete 6a is formed from the indoor side 10a of the concrete formwork 10. In an outer insulating concrete building formed by peeling the veneer plate 5, the formwork insulating panel 3 applies a mixture of an aqueous resin emulsion and silica sand to both side surfaces 1a and 1b of the foamed insulating plate 1 formed of polystyrene. Then, the aqueous composition layer 2 is formed thereon, and the thickness of the aqueous composition layer 2 is formed thinner than the thickness of the foamed heat insulating board 1.

Reference numeral 7 in FIG.
A separator for forming the space 4 between the plywood 5 and the plywood 5, a round pipe 8a and 8b for holding the plywood 5, and a rib for a round pipe 9 for crimping the round pipes 8a and 8b.

[0013]

EXAMPLE On both sides of a foamed heat insulating board 1 having a thickness of 50 mm formed of polystyrene, 3,000 weight percent of an aqueous resin emulsion according to the previously filed Japanese Patent No. 1040162 was added.
A heat-insulating panel 3 that also serves as a formwork in which an aqueous composition obtained by mixing 6000% by weight of silica sand (No. 6) is applied to form an aqueous composition layer 2 having a thickness of 4 mm.

The various physical properties of the heat-insulating panel which also serves as a mold in the above embodiment are as follows. 1. Adhesion between polystyrene and aqueous composition is 7.5 kg
/ cm ² 2. The adhesion between the aqueous composition and the concrete is 15.0
Kg / cm ² 3. The bending strength of the formwork and heat-insulating panel is 13.0 kg / c.
m ² , compressive strength is 5.0Kg / cm ² (5% strain)

The physical properties of the conventional heat insulating panel for the outer surface of the building which also serves as the formwork are as follows. 1. The adhesive force between the polystyrene plate and concrete is 2.
0 kg / cm ² 2. The bending strength of the polystyrene plate was 3.0 kg / cm ² (5%
Strain)

[0016]

As described above, the formwork panel of the present invention is obtained by applying an aqueous composition obtained by mixing silica sand into an aqueous resin emulsion on both side surfaces 1a and 1b of the foamed heat insulating plate 1. Since the aqueous composition layer is formed on the foam insulation board 1
As shown in FIG. 2 which is an enlarged view of part A of FIG. 1, a side surface 1b of the aqueous composition 2
When it is applied, it flows into each of the foams 1c constituting the surface of the foamed heat insulating plate 1, and the two can be firmly adhered to each other by a so-called anchor phenomenon.

Further, since the thickness of the aqueous composition layer is made thinner than that of the foamed heat insulating layer, the thickness of the foamed heat insulating layer is increased without increasing the overall weight so that the heat insulating effect is enhanced. be able to.

Further, the externally-insulated concrete building using the form-insulating panel according to the present invention is as described above, and the form-insulating panel is formed on the outside of the concrete form. After filling and curing the ready-mixed concrete in the frame, the plywood on the indoor side is simply peeled off therefrom, eliminating the need to peel off the formwork / panel on the outdoor side from the cured concrete after curing.

Furthermore, since the heat insulating panel also serves as a formwork on the outside of the building, the inside of the building is not cooled, so that it is of course possible to prevent the occurrence of dew condensation during cooling. In particular, the water-based composition obtained by mixing the water-based resin emulsion and silica sand and the bonding surface of the ready-mixed concrete and the bonding surface when applying the finishing mortar to the surface of the building are characterized by the physical properties of the aqueous composition. Just by filling concrete into the formwork, it is possible to firmly adhere by the anchoring phenomenon, and the bonding work during this time does not require an adhesive and labor at that time, so that the construction can be simplified.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Foam insulation board 1a, 1b Both sides 2 Aqueous composition 3 Insulation panel which also serves as a formwork 4 Space 5 Veneer board 6 Concrete wall 6a Fresh concrete 7 Separator 10 Concrete formwork 10a Outside 10b Indoor

Claims (3)

[Claims] An aqueous composition obtained by mixing an aqueous resin emulsion and silica sand is applied to both sides of a foamed heat insulating board made of polystyrene, and an aqueous composition layer is formed thereon to be thinner than the foamed heat insulating board. A heat insulating panel which also serves as a formwork, characterized in that it is formed. 2. The aqueous resin composition according to claim 1, wherein the aqueous composition layer is an aqueous resin emulsion 3.
2. The heat-insulating panel also used as a formwork according to claim 1, wherein the heat-insulating panel is mixed at a ratio of 000 weight and 6000 weight of silica sand (No. 6). 3. The exterior of the concrete formwork is composed of a heat insulating panel, the interior side of the concrete formwork is composed of a plywood, and the space between the heat insulation panel and the plywood is filled with ready-mixed concrete.
Curing it, in an outer insulating concrete building formed by peeling the plywood on the indoor side of the concrete formwork from the hardened concrete, the heat insulating panel is formed on both sides of a foamed heat insulating plate formed of polystyrene, An outer heat-insulated concrete structure, wherein a mixture of a resin emulsion and silica sand is applied, and an aqueous composition layer is formed thereon to be thinner than the thickness of the foamed heat insulating board.