JP2002356946A - Wet wall construction method using mesh for form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wet wall construction method using a mesh plate capable of applying a concrete body with the mesh plate as an aboveground part of a concrete skeleton by surely sticking a wet covering material to a concrete wall surface without chipping a concrete wall. SOLUTION: This wet wall construction method using the mesh plate is characterized in that concrete is placed in a mesh form constructed by the mesh plate, a sheathing board, lime wash leaking out of respective meshes of the mesh plate is hardened to form an irregular-surfaced concrete wall body by the leaking-out lime wash, and the wet covering material is coated in close contact on the irregular wall surface of the concrete wall with the mesh plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet wall method for providing a heat insulating function to a concrete wall by using a wet heat insulating material.

[0002]

2. Description of the Related Art In a wet wall method, when a wall surface of a concrete wall is coated with a wet coating material such as a heat insulating material,
Rigid polyurethane foam is sprayed on site by spraying or the like, but in order to improve the adhesion of the wet coating material to the concrete wall, irregularities are formed on the concrete wall before painting, and wet It is preferable to fill the coating material to exhibit the anchor effect.

[0003] However, when making irregularities on the concrete wall surface, it takes time and effort to cut the concrete wall surface.
In addition, there has been a problem that concrete shards become waste materials and deteriorate the on-site environment.

[0004] On the other hand, in the dry wall construction method, it is not necessary to make irregularities on the concrete wall surface, but there is a problem in that when the heat insulating material is cut into a predetermined size when the heat insulating material is attached to the concrete wall, the cut ends become waste material.

[0005] Further, when a wet coating material is applied to a concrete wall, there is a problem that the function of the wet coating material is reduced due to cracks in the concrete wall.

In recent years, the deforestation of wood, which is a raw material for plywood, has destroyed forest resources and has deteriorated the environment on a global scale. Therefore, it is necessary to reduce the amount of waste wood as much as possible. In the construction field, mesh forms are used as concrete forms.

[0007] Since it is not necessary to remove and collect the mesh formwork after casting concrete, the formwork material does not become waste material. In addition, mesh formwork is lighter and easier to process than plywood formwork, which improves construction efficiency, improves the quality of concrete due to excess water flowing out of the mesh mesh, etc. Therefore, there is an advantage that the labor for removing the weir plate is omitted, and the work of dismantling the formwork after placing the concrete is greatly reduced, and the construction period can be greatly shortened as compared with the conventional construction method. Further, since the mesh form has water permeability, the mesh form has a water permeability function of discharging air, surplus water, and breathing water in the concrete, and the quality of the concrete is improved.

[0008] However, the mesh form has a problem that the slag flows out from the mesh of the mesh plate, and various measures have been taken in order to keep the spill amount low. Can not. Therefore, at present, the applicable range of the mesh formwork is limited to concrete works such as foundations and underground beams.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in consideration of the above circumstances. Accordingly, a wet coating material is securely adhered to a concrete wall without shaving the concrete wall. Provided is a wet wall construction method using a mesh plate that enables a concrete body with a plate to be applied as a ground portion of a concrete body or the like.

[0010]

In order to solve the above-mentioned problems, the present invention provides the following wet wall method using a mesh plate.

In the wet wall construction method using a mesh plate, concrete is poured into a mesh form formed by a mesh plate serving as a weir plate, and slag which has leaked from each mesh of the mesh plate is hardened. It is characterized in that a concrete wall body whose wall surface is uneven due to leakage leakage is formed, and a wet coating material is applied so as to adhere to the uneven wall surface of the concrete wall provided with the mesh plate.

As the wet coating material, a heat insulating material such as a rigid polyurethane foam can be considered. The surface of the heat insulating layer formed of the heat insulating material is covered with a finishing material such as a plastering material.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, in the wet wall method, a concrete wall 2 formed by casting concrete in a mesh form constructed by using a mesh plate 1 is provided with a hard coating material, which is a wet coating material. Paint polyurethane foam 3,
The surface of the rigid polyurethane foam 3 is covered with a finishing material 5.

As shown in FIG. 2, the mesh plate 1 is formed by forming a plurality of vertically elongated ribs 1a on a metal plate, providing a plurality of slits between the ribs 1a, and expanding the slits between the ribs 1a. It is formed by forming a large number of meshes 1b of the same size and arranged at regular intervals. The interval L1 between the ribs 1a
Is, for example, 80 mm, and the dimension L2 × L3 of the mesh 1b is 1
It is set to 5 mm x 8 mm. The mesh plate 1
This includes a wire knitted in a mesh shape, a metal plate punched out in a mesh shape, and the like.

In the wet wall method according to the present invention, concrete is poured into a mesh formwork, and the slag that leaks from each mesh 1b of the mesh plate 1 is hardened. The recess 2b is used as an anchor hole, and the wet coating material 3 such as urethane foam is coated on the uneven wall surface 2a.

Next, the construction procedure of the wet wall method according to the present invention will be described. (1) After the wall arrangement is completed, bending work of the mesh plate 1,
A mesh formwork is constructed by installing a separator mounting mesh. (2) Next, concrete is poured into the mesh formwork.
At this time, as shown in FIG. 3, the slag leaks out of the mesh 1 b of the mesh plate 1 of the mesh form, and the leaked slag forms an uneven wall surface 2 a on the concrete wall 2. Since the uneven wall surface 2a is formed by spills leaking from a large number of meshes 1b of the same size and arranged at regular intervals of the mesh plate 1, the concave portion 2b of the uneven wall surface 2a extends over the entire surface of the wall surface 2a. It is formed evenly and uniformly. (3) Next, as shown in FIG. 1, the uneven wall surface 2 a of the concrete wall 2 is covered with the rigid polyurethane foam 3. Specifically, the isocyanate composition and the polyol composition are sprayed on the uneven wall surface 2a of the concrete wall 2 in the presence of a foaming agent made of a non-fluorocarbon compound or the like, a catalyst, and other auxiliaries. Shaped wall 2
a is covered with a rigid polyurethane foam 3 to form a heat insulating layer 4.

As a method for attaching the wet coating material 3 to the wall surface, there are coating, spraying, and the like, and a spraying method is advantageous for the uneven wall surface 3. (4) Next, as shown in FIG. 1, finishing is performed on the heat insulating layer 4 using stucco, which is a wet finishing material 5. That is, materials such as slaked lime, susa, glue, and water are kneaded, and the kneaded material is applied to the surface of the heat insulating layer 4 with a trowel and then dried.

The wet finishing material 5 is not limited to the plastering material, but may be a vinyl sheet or a paint. The plastering material may be a cement mortar or a plaster other than plaster. In addition, since irregularities are formed on the surface of the heat insulating layer 4 made of the rigid polyurethane foam 3, the adhesion to the wet finishing material 5 is improved.

As described above, according to the wet wall construction method of the present embodiment, the heat insulation layer 4 made of the rigid polyurethane foam 3 is sprayed on the uneven wall surface 2a of the concrete wall 2 by the spray construction method.
Is formed, the rigid polyurethane foam 3 penetrates into the concave portion 2b of the uneven wall surface 2a, whereby the adhesion between the uneven wall surface 2a of the concrete wall 2 and the heat insulating layer 4 is improved, and the uneven wall surface is formed. Since no gap is formed between the heat insulating layer 2a and the heat insulating layer 4, it is possible to eliminate a factor that lowers the heat insulating effect. Further, since the mesh plate 1 left on the concrete wall 2 suppresses the occurrence of cracks in the concrete wall 2, it is possible to prevent the heat insulation function of the heat insulating layer 4 from being deteriorated due to the cracks in the concrete wall 2. In addition, since the rigid polyurethane foam 3 is used to form the heat insulating layer 4, it is possible to prevent an increase in waste material due to a piece generated after cutting to a predetermined size as in the case of using a heat insulating cloth. Furthermore,
If a crack occurs in the concrete wall 2, the heat insulating layer 5 serves as a cushioning material and does not reach the finishing layer, so that water leakage from the cracked portion of the concrete wall 2 can be prevented.

The wet wall method using a mesh plate of the present invention can be used for an outer heat insulating wall method, an inner heat insulating wall method, and the like.

The wet wall method has a smaller thickness dimension up to the finished surface than the dry wall method and can expand the internal space of the building. However, when a heat insulating layer is formed on the inner wall side,
If the heat insulating layer is formed also on the outer wall side, the thickness of the heat insulating layer on the inner wall side required for heat insulation can be reduced, and the internal space can be further expanded.

The wet wall construction method using the mesh plate of the present invention is not limited to the above construction method. For example, the mortar brushing base is formed on the uneven wall surface 2a of the concrete wall 2, and A finish coating material (for example, a spray tile) may be applied and finished.

[0024]

According to the wet wall method using a mesh plate of the present invention, concrete is poured into a mesh form to form a concrete wall having an uneven surface due to leakage leakage. The work of forming irregularities on the concrete wall surface after hardening becomes unnecessary, the workability of the wet wall construction method is improved, and the concrete environment does not deteriorate the site environment.

Further, since the mesh of the mesh plate forming the leakage slag is formed uniformly and uniformly over the entire surface of the weir, the recesses due to the leakage slag adhered to the concrete wall surface are uniformly distributed over the entire surface of the concrete wall surface. As a result, the anchoring effect due to the wet coating material being filled in the recesses is exerted over the entire surface of the coating material layer, and the integrity of the concrete wall and the coating material layer can be improved.

Also, since the size of the concave portion due to the leakage is not as fine as the concave portion on the surface of the lightweight cellular concrete, the wet coating material is securely filled in the concave portion and the anchor effect is sufficiently exhibited. This improves the adhesion between the coating material layer and the concrete wall. In addition, since there is no gap between the concrete wall and the heat insulating material, the occurrence of dew condensation can be prevented.

Further, since the mesh plate is left on the concrete wall, it is possible to prevent the occurrence of cracks on the concrete surface, prevent the function of the covering material layer from deteriorating, and impair the architectural design value and the like. Not.

Thus, with respect to the coating of the wet coating material,
Taking advantage of the characteristics of concrete walls using mesh formwork, it is possible to exhibit superior effects over concrete walls using plywood formwork.
It can be used not only for concrete work such as underground beams, but also for concrete framing work on the ground, and the amount of waste of formwork can be reduced by reducing the amount of plywood formwork used.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a wet wall method according to the present invention.

FIG. 2 is a front view of a mesh plate of a mesh form used in the wet wall construction method of the present invention.

FIG. 3 is a cross-sectional view showing a state in which concrete is poured into a mesh formwork.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mesh plate 1 b mesh plate mesh 2 concrete wall 2 a uneven wall surface 3 rigid polyurethane foam 4 heat insulating layer 5 wet finishing material

Claims (5)

[Claims] 1. Concrete is poured into a mesh formwork constructed by a mesh plate which is a weir plate, and slag which has leaked from each mesh of the mesh plate is hardened.
Forming a concrete wall whose wall surface is uneven due to leakage leakage, and applying a wet coating material so as to adhere to the uneven wall surface of the concrete wall with the mesh plate. Wet wall construction method. 2. The wet wall construction method according to claim 1, wherein the wet coating material is a heat insulating material. 3. The wet wall method according to claim 2, wherein the heat insulating material is a rigid polyurethane foam. 4. The heat-insulating layer formed of the heat-insulating material is covered with a finishing material.
4. A wet wall method using a mesh plate according to 1.). 5. The wet wall method using a mesh plate according to claim 4, wherein the finishing material is a plastering material.