JP2585387Y2 - Insulation formwork for concrete wall - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for both heat insulation and concrete wall.

[0002]

2. Description of the Related Art In general, when constructing a concrete wall, a formwork made of plywood or the like is assembled, concrete is poured into the formwork, and the concrete is waited for hardening. In the case of a wall, the construction was performed by applying a heat insulating material. However, in the case of the above-mentioned formwork method, the formwork is used only as a mold for simply constructing the wall surface, and there is a drawback that the subsequent work of removing the formwork is extremely troublesome. In particular, when attaching insulation, etc.,
After removing the formwork, a plate-like heat insulating material having the same shape as the formwork is pasted on the concrete wall or the adhesive is applied, so there was a problem that it took a long time for construction work and construction period. . In view of these problems, the concrete formwork is made of fiber-reinforced foamed phenolic resin plate with high heat insulating properties, and after the formwork is assembled and concrete is cast, the formwork is used as it is as an interior material that also serves as a heat insulating material. Frames are used.

[0003]

Problems of the prior art When the above-mentioned formwork is used, the work of removing the formwork after concrete casting is completely omitted, which is very convenient for shortening the construction period and saving labor. There is a problem that soil is easily contaminated by spillage of concrete filter and damage due to thick metal fittings, and it is necessary to apply makeup again.In addition, since phenolic resin is acidic, the contact interface with concrete is neutral. And the adhesive strength with the heat insulating material is reduced.

[0004]

DISCLOSURE OF THE INVENTION In view of the above problems, the present invention completes the construction of the concrete form and the work of attaching the heat insulating material at the same time, and can omit the work of removing the form afterwards. The purpose of the present invention is to improve the adhesiveness of the concrete to concrete and to omit the decorative work.

[0005]

That is, in the heat insulation and formwork 1 of the concrete wall of the present invention, a protective paper 3 which can be peeled off is adhered to the entire surface 2A of the foamed phenol plate 2 mixed with the glass fiber. In addition, inorganic paper 4 having good adhesiveness to concrete is integrally laminated and adhered to the entire surface 2B on the back surface side.

[0006]

Next, an embodiment of the present invention will be described. FIG. 1 is a sectional view of an embodiment of the present invention.

[0007] The concrete insulation and formwork 1 of the concrete wall of the present invention is a protective paper 3 that can be peeled over the entire surface 2A of the foamed phenol plate 2 having a density of, for example, 30 kg / m ³ , for example, the entire inner wall side. Is adhered via, for example, an adhesive layer, and inorganic paper 4 made of, for example, calcium carbonate, aluminum hydroxide, or the like, which has good adhesiveness with concrete, is integrally laminated and adhered to the entire surface 2B on the back surface side. Have been. In the above embodiment, the protective paper 3 is adhered after the fiber-reinforced foamed phenolic plate 2 is formed, while the inorganic paper 4 is laminated and formed at the same time as the glass fiber-reinforced foamed phenolic resin plate 2 is formed.

[0008]

When using the heat-insulating formwork 1 of the concrete wall of the present invention, the form is assembled so that the inorganic paper 4 side is the concrete casting surface, and concrete is poured. And
When the concrete hardens, the form 1 is integrally bonded to the concrete wall with the inorganic paper 4 side as the bonding surface. At this time, since the inorganic paper 4 blocks the space between the foamed phenolic resin plate 2 and the concrete, the acid does not affect the concrete, and the inorganic paper 4 and the concrete have a good affinity and are firmly bonded.

In addition, even if there is a run-off during concrete placement on the surface of the concrete wall, which is the indoor side, on the surface of the heat-insulating / molding form 1, they only stain the surface of the protective paper 3, so that they are dried. If it is peeled off at once, the clean surface of the heat-insulating formwork 1 of the concrete wall will appear, and the subsequent repair work can be omitted completely. Further, since the foamed phenol resin plate has good heat insulating properties, the heat insulating effect of the wall surface is enhanced. Therefore, the material used as the formwork becomes the heat insulating material of the concrete wall as it is, and the work of removing and repairing the formwork later becomes completely unnecessary. Further, since the foamed phenol plate 2 and the inorganic fiber reinforced phenol plate 3 are nonflammable, Also functions as a fire wall.

[0010]

As described above, the concrete form 1 for heat insulation of a concrete wall according to the present invention has not only a function as a form but also a function for providing heat insulating material and surface accuracy, and also has a function after casting. Strong adhesive strength is maintained over a long period without deterioration of the adhesive interface with concrete due to acid.Furthermore, surface finishing work after construction can be omitted. It has the effect that wall surfaces can be constructed.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Form wall which also serves as heat insulation of concrete wall 2 ... Fiber reinforced foam phenol board 2A ... Front side 2B ... Back side 3 ... Protective paper 4 ... Inorganic paper

Claims (1)

(57) [Scope of request for utility model registration] 1. A releasable protective paper 3 is adhered to the entire surface 2A on the front side of a glass fiber-mixed foamed phenol board 2, and inorganic paper 4 having good adhesion to concrete is applied to the entire surface 2B on the back side. Are integrally laminated and adhered to each other.