JPH08298U - Weir plate for formwork using lath as core material - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a weir board for a formwork using a lath as a core material, which achieves protection of the global environment by cutting down the forest without using wood plywood, and is an inexpensive material. The purpose is to form a smooth concrete surface that has moderate strength and does not require surface finishing after mold removal. [Structure] A plurality of ribs 1 projecting to the one surface side are formed in parallel due to the bending of an iron plate, and one side of a lath A stretched in a mesh shape 2 between the ribs 1 is provided with an adhesive material such as a thin tire. The lath A is embedded by filling the admixture 3 in which particles are mixed, and the paint 4 is applied to at least one of the surfaces to form a smooth surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a weir plate for a mold using a wire mesh lath as a core material in the mold that forms the side surface of the structure when concrete is poured between the molds.

[0002]

[Prior art]

 Conventionally, the most commonly used material for weir boards for formwork is plywood, which is made by laminating thin wood plates.Other weir boards for formwork are called lath formwork. The U-shaped ribs are formed at a constant pitch between the two side edges and between them, and the formwork lath (wire net) formed between the ribs in the shape of a wire mesh is used as a weir plate in the near future. It's coming.

Since the lath for the formwork used in this lath formwork has a wire mesh shape, when concrete is placed, excess water in the concrete is drained in a short time, so that hardening is quick and the body is finished. Time gets faster. In addition, after the concrete is placed, the weir plate lath for formwork is left without being dismantled, so there is an advantage that it can greatly contribute to shortening the construction period of formwork, especially in shortening the time for demolding. .

[0004]

[Problems to be solved by the device]

 By the way, in the lath formwork described above, since the formwork lath used for the dam plate has a wire mesh shape, the advantage of water outflow is that at the same time, the cement content of the concrete near the formwork also flows out.

Therefore, the area around the mesh is dented by the outflow of the cement paste, or the cement paste is deposited and deposited, so that the concrete surface has a rough finish with unevenness, and further, the lath for the formwork is left, The ribs and the mesh itself also have irregularities, and it is necessary to apply a surface finish to the exposed parts of the surface, which loses the advantages of the lath formwork.

[0006] Therefore, plywood molds are often used in an open construction method without mortar finishing after placing concrete for the purpose of reducing the construction cost due to improvements in surface treatment technology and assembly accuracy. It has become a reality.

Since the lath formwork causes the finishing problem as described above, it is mainly used only for the formwork of the portion completely hidden in the ground such as the foundation or the underground beam, and the flat surface is used. As a dam plate for the formwork that requires a certain amount of space, the plywood dam plate had to be used.

On the other hand, in recent years, due to the felling of timber, deterioration of the global environment due to the degradation of forests, particularly tropical rainforests, has been taken up as a problem, and there has been a movement to stop the felling of timber, resulting in a delay in the supply of timber. Along with this, wood tends to be expensive, and there is a demand for form weir boards that do not require a surface finish instead of wood.

The present invention solves the above-mentioned problems in the conventional dam plate for formwork, and forms a smooth concrete surface which is an inexpensive material, has appropriate strength, and does not require surface finishing after removing the formwork. The purpose is to do.

[0010]

[Means for Solving the Problems]

 The present invention relates to a means for forming a weir plate for a frame, which uses a lath as a core material to achieve the above-mentioned object. The means according to claim 1 has a plurality of ribs protruding toward one surface side due to the bending of the iron plate. At least one of the laths, which are formed in parallel with each other, is filled with fine particles such as old tires mixed with an adhesive on one side of the lath that is stretched like a wire mesh between the ribs, and at least one of them is embedded. It is characterized in that one surface is coated with a surface smoothing material such as paint to form a smooth surface.

According to a second aspect of the present invention, a plurality of ribs projecting to the one surface side due to the bending of the iron plate are formed in a flat manner, and the lath extending between the ribs in a wire mesh shape is used as the core material, and the composite is formed. It is characterized in that it is embedded by an embedding material such as resin or rubber.

[0012]

[Action]

 The dam plate for a formwork using the lath as the core material according to claim 1 of the present invention uses the dam plate of the conventional lath formwork having a plurality of ribs as the core material. The strength is obtained and the weight of the core material is reduced.

The wire mesh of the lath form frame as the core material is filled with fine particles such as old tires mixed in the adhesive to prevent the cement paste from flowing out, and the surface applied to the surface. Due to the smooth material, the concrete surface after removing the formwork becomes a smooth surface.

Furthermore, since fine particles such as old tires mixed with the adhesive formed on at least one surface of the lath are integrated with the lath, the dam becomes a strong form board, and when concrete is poured into the form. It does not cause distortion of the formwork and other problems.

Also in the dam plate for the formwork which is the core material according to claim 2, the embedding material such as synthetic resin or rubber is used for closing the mesh of the lath of the lath formwork, surface smoothness and reinforcement. The same action as the idea described in 1 is performed.

[0016]

【Example】

 Next, a first embodiment corresponding to claim 1 of the present invention will be described below with reference to FIGS. 1 and 2. The lath in this embodiment is curved at both ends and at a plurality of points at equal pitch with respect to 1800 mm in the lengthwise direction of an iron plate having a thickness of 0.5 mm to form parallel ribs 1.

In each of the ribs 1, for example, a notch having a length of about 25 mm is formed in an iron plate with an interval of about 2 mm, and the notches are formed in parallel in four rows with a width of 2 mm between the notches. The iron plate is stretched in the increasing direction, and the notch is stretched in a rhombus shape to obtain a glass A used as a lath frame in which the mesh 2 is formed.

The lath A is placed on a flat base with the protruding side of the rib 1 as the lower surface, and the admixture 3 in which fine particles obtained by crushing old tires are mixed in the adhesive is made equal to or more than the upper surface of the mesh 2. Fill up.

When the adhesive material is released from the table after solidification, the admixture 3 has one surface that is the same as the protruding surface of the rib 1 and the other surface that is the same as or slightly buried in the mesh 2 and the lath. A is embedded by the fine particles of the old tire mixed with the adhesive material, the mesh 2 is closed, and the weir plate of the form is formed to the extent that irregularities due to the fine particles of the old tire appear on the surface.

By coating the surface of the admixture 3 on the side of the mesh 2 with a coating material 4 which can obtain a coating thickness without multiple coating, the surface of the admixture 3 can be buried in the unevenness of the old tire. Is a smooth weir plate for formwork, and the weir plate for formwork uses the smooth surface side as the inner surface side of the formwork to make the concrete surface smooth after removing the formwork. You can

Next, a second embodiment corresponding to claim 2 of the present invention will be described with reference to FIGS. 3 and 4, but the lath A used in this embodiment is different from the previous embodiment. Absent.

In this embodiment, the embedding material 5 is filled so that the mesh 2 and the ribs 1 of the lath A are embedded in the embedding material 5 such as synthetic resin or rubber. By embedding in this embedding material 5, the surface can be made a smooth surface, and by using this as a dam for a formwork, the concrete surface after removing the formwork can be made smooth.

As described above, in each of the above-described embodiments, the use of waste wood such as old tires without the use of wood plywood is useful for environmental degradation and resource saving, and the surface coating material 4 and the embedding material 5 are used. A concrete surface is obtained according to the surface roughness of, and surface finishing is not required.

[0024]

[Effect of device]

 As described above, the present invention does not use wood plywood and is composed of other materials, so it does not cause deforestation due to logging, contributes to the conservation of the global environment by forest protection, and wood. It is possible to deal with soaring prices and also to use waste materials such as old tires for the purpose of treating waste materials.

Since the lath of the lath mold is used as the core material, strength equal to or higher than that of the lath mold is secured, and a pole, separator, etc. used when forming the mold with the lath mold. The frame support material of can be used as it is, and there is no need to design or prepare a new support structure.

Further, by finishing the surface of the dam plate for formwork with a smooth surface with paint or the like, the surface roughness of the concrete after removing the formwork can be made smooth, and the surface finish of concrete can be improved. It is possible to make a dam plate for the formwork that does not perform.

[Brief description of drawings]

FIG. 1 is a partial surface view of a first embodiment of the present invention, in which a paint is peeled off.

FIG. 2 is an enlarged sectional view of the above.

FIG. 3 is a surface view showing a lath by peeling off a part of an embedding material of a second embodiment of the present invention.

FIG. 4 is a sectional view of the same.

[Explanation of symbols]

 A lath 1 rib 2 mesh 3 admixture 4 paint 5 embedding material

Claims (2)

[Scope of utility model registration request] 1. A plurality of ribs projecting to one surface side are formed in parallel due to the bending of an iron plate, and one side of a lath stretched in the form of a wire mesh between the ribs has a thin surface such as an old tire mixed with an adhesive material. A mold using a lath as a core material, characterized in that at least one surface of the lath is filled with particles and at least one of the surfaces is coated with a surface smoothing material such as paint to form a smooth surface. Dam plate. 2. A plurality of ribs projecting to one surface side are formed in parallel due to the bending of an iron plate, and a lath extending between the ribs in a wire mesh shape is used as a core material, and an embedding material such as synthetic resin or rubber is used. A weir board for formwork using a lath as a core material, which is embedded.