JPH01111959A - Method of concrete placing construction - Google Patents

Abstract

PURPOSE: To improve a peeling property of a member by removing a form after placing concrete through a synthetic resin film on a relief pattern forming member of the frame and re-using the form from which the film is peeled off. CONSTITUTION: A relief pattern forming member 2 formed of synthetic resin foam body or the like is stuck on one surface of a wooden plywood form main body 1. Also, a relief pattern 3 is formed on the surface of the member 2, and a polyethylene synthetic resin film 4 is stuck and laminated on the surface of the pattern 3 to be peelable. Then, after concrete B has been placed through a film 4 on the member 2 of a form A, the form A is removed, the film 4 is peeled off, and the form A is re-used. Thus the form A can be used repeatedly without damaging the pattern 3 portion.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a concrete pouring method for forming a relief pattern on a concrete surface, and more specifically, a concrete casting method having a relief pattern forming member made of rubber or synthetic resin foam. Concerning a concrete pouring method that allows concrete formwork to be used repeatedly.

[Conventional technology]

Conventionally, a relief pattern forming member made of a synthetic resin foam such as expanded polystyrene having an uneven relief pattern on the surface of a formwork mainly made of wooden plywood is laminated, and concrete is poured onto the member. Then, that Lily,
A concrete pouring method is known in which a pattern is copied onto the concrete surface.

[Problem that the invention seeks to solve]

However, with this conventional concrete pouring method.

Because the poured concrete adheres to the surface of the synthetic resin foam relief pattern forming member, the peelability of the member from the concrete is poor, and when the member is peeled off from the concrete, concrete residue may adhere to the member. arise.

For this reason, the used formwork cannot be reused as it is because residual concrete remains on the relief pattern forming member.

In addition, in order to solve this problem, methods have been proposed such as applying or spraying a concrete release agent on the surface of the relief pattern forming member, and methods of increasing the hard skin contact with the surface. I wasn't able to do it.

The present invention was made in order to improve the above-mentioned situation, and an object of the present invention is to provide a concrete pouring method that can repeatedly use a concrete formwork in which relief pattern forming members made of rubber or synthetic resin foam are laminated. shall be.

[Means for solving problems]

In order to achieve the above object, the present invention uses a concrete formwork in which a relief pattern forming member made of synthetic resin foam is laminated on the concrete pouring side surface of the main body of the formwork, and the surface of the relief pattern forming member of the formwork. In a concrete pouring method in which concrete is poured on top of the relief pattern forming member and the relief pattern formed on the surface of the relief pattern forming member is copied onto the concrete surface, concrete is placed on the relief pattern forming member through a synthetic resin film. After pouring, the mold is removed and the synthetic resin film is peeled off and the mold is reused.

In this case, 1 synthetic resin film may be placed on the relief pattern forming member and the relief pattern may be copied by pressure during concrete pouring, but in order to more completely copy the relief pattern, 1 synthetic resin film and the relief pattern Adhesion and unevenness can also be ensured by reducing the pressure between the forming member and the forming member.

Furthermore, a multilayer synthetic resin film in which each layer is laminated so that the layers can be peeled off from each other is used as the synthetic resin film, and the lowermost layer is adhered to the surface of the relief pattern forming member.

After pouring concrete, the formwork can be reused by peeling off the top layer of the multilayer synthetic resin film from the formwork removed from the concrete to expose a new film surface of the primary layer.

[For production]

According to the concrete pouring method according to the present invention, concrete is poured onto a relief pattern forming member made of rubber or synthetic resin foam of a concrete formwork through a synthetic resin film, and the synthetic resin film The relief pattern on the surface of the component is reliably transferred to the concrete surface, and a good relief pattern is formed on the concrete surface. Even if the concrete residue adheres, the concrete residue will not directly adhere to the surface of the synthetic resin member, so the concrete formwork from which the synthetic resin film has been peeled and removed will have a relief pattern formed on the surface of the member. If a synthetic resin film is placed on it again, it can be reused as is.

In this case, the synthetic resin film may be simply placed on the concrete formwork, or the ends may be fixed with the ends of the concrete formwork, but the synthetic resin film may be releasably attached to the relief pattern forming member using a weak adhesive. By pasting on the target or the entire surface,
The synthetic resin film can be easily peeled off from the member, and at this time, by reducing the pressure between the member and the film during concrete pouring, the close adhesion of the film to the member can be ensured.

In addition, when a multilayered synthetic resin film, which is made by laminating a plurality of films coated with an adhesive on one side and removably laminated to each other, is adhered to a relief pattern forming member, the synthetic resin film peeled off from the concrete By peeling and removing the top layer, the new film surface of the next layer is exposed, so it can be used as is for concrete pouring.

Hereinafter, the present invention will be described in detail with reference to the drawings.

〔Example〕

Figure 1 shows a concrete pouring method using an example of concrete formwork A suitable for carrying out the present invention.
2 is a formwork main body made of wooden plywood, and 2 is a relief pattern forming member affixed to one side (concrete pouring side), and this relief pattern forming member 2 is made of synthetic resin foam such as expanded polystyrene or rubber foam. The relief pattern portion 3 is formed on the surface thereof. Furthermore, a synthetic resin film 4 is releasably adhered and laminated on the surface of the relief pattern forming member 2.

Here, as the synthetic resin film 4, polyethylene,
Polypropylene, nylon, polyester, polyvinyl chloride, etc. are used, and the thickness is preferably about 5 to 200 JEa.

Further, it is preferable to attach the synthetic resin film 4 to the relief pattern forming member 2 using a weak adhesive having an adhesive force of about 2 to 100 g/25 mm, thereby attaching the film 4 to the relief pattern forming member 2. 2 can be easily peeled off and removed.

In this case, the film 4 may be adhered to the member 2 partially or over the entire surface.

When concrete is poured using the concrete formwork A described above, concrete B is placed on the relief pattern forming member 2 of formwork A through a synthetic resin film 4, and thereby the surface of concrete B is A relief pattern corresponding to the relief pattern portion 3 of the member 2 is formed on the member 2.

In this case, it is possible to reduce the pressure between the member 2 and the film 4 during concrete pouring, thereby ensuring that the member 2 is in close contact with the film 4 and ensuring that the relief pattern 3 of the member 2 is well formed on the surface of the concrete 88. Copied.

After concrete is poured, the formwork A is removed by peeling off the film 4 and the concrete B. In this case, when the reduced pressure state is released, the adhesion force of the film 4 to the member 2 is the same as that of the concrete B. If the force is weaker than the force, the film 4 and the member 2 will separate. In such a case, the film 4 is then peeled off from the concrete B.

According to the method described above, even if concrete residue from concrete pouring adheres to the film 4, the concrete residue will not adhere to the member 2 made of synthetic resin foam, so the relief pattern 3 will not be damaged, and therefore the film will not be damaged. If concrete residue is attached to 4, it can be reused in place of a new film.

In this example, the film 4 was attached to the member 2 in advance, but in some cases, the film 4 was simply placed on the member 2 without being attached with an adhesive.

Alternatively, the film may be fixed at the end of the formwork, and in this case, it is preferable to bring the film 4 into close contact with each other by applying reduced pressure during concrete pouring.

Figure 2 shows another example of the synthetic resin film to be attached to the relief pattern forming member of the concrete formwork used in the present invention. Agent 5a.

A multilayer synthetic resin film 4 is used, which is formed by sequentially laminating a plurality of synthetic resin films 4a, 4b, 4ct 4d coated with 5b and 5c, and the bottom layer 4d is coated with the above-mentioned adhesive. 5a, 5b.

It is designed to adhere to the surface of the relief pattern forming member, which has a stronger adhesive force than 5c. If you use this formwork,
After pouring concrete, the formwork is removed and when reusing it, the top layer film 4a is peeled off and a new second layer is removed.
The film 4b of the layer is exposed and used, so in this example, concrete can always be poured with a new film surface.

In this case, the number of film layers of this multilayer synthetic resin film is not limited to the four layers shown in the figure, but can be selected from one variety, but may be 3 to 10 layers.
It is preferable to make it about a layer.

Furthermore, the multilayer synthetic resin film may not be adhered to the member with strong adhesive force, and the arrangement mode described in the embodiment shown in FIG. 1 may be adopted.

Note that the present invention is not limited to the above embodiments, and various changes can be made within the scope of the gist of the present invention.

〔Effect of the invention〕

As explained above, according to the concrete pouring method of the present invention, a synthetic resin film is interposed between the relief pattern forming member of the formwork and the concrete.
No concrete debris adheres to the surface of the component,
Since the relief pattern is not damaged, the concrete formwork can be used repeatedly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a sectional view showing an example of a synthetic resin film laminated on a concrete formwork. A... Concrete formwork, 1... Mainly formwork. 2...Relief pattern forming member. 3...Relief pattern portion, 4...Synthetic resin film. B...Concrete Applicant Fujimori Kogyo Co., Ltd. Agent Patent Attorney Takashi Kojima Figure 2 4

Claims (1)

[Scope of Claims] 1. Using a concrete formwork in which a relief pattern forming member made of rubber or synthetic resin foam is laminated on the concrete pouring side surface of the main body of the formwork, the relief pattern forming member surface of the formwork is used. In a concrete pouring method in which concrete is poured on top of the relief pattern forming member and the relief pattern formed on the surface of the relief pattern forming member is copied onto the concrete surface, concrete is placed on the relief pattern forming member through a synthetic resin film. A concrete pouring method characterized in that after pouring, the formwork is removed and the formwork with the synthetic resin film peeled off is reused. 2. The construction method according to claim 1, wherein a reduced pressure is applied between the relief pattern forming member and the synthetic resin film to bring the film into close contact with the member. 3. Using a multilayer synthetic resin film in which each layer is laminated so that each layer can be peeled off from the other, the bottom layer is glued to the surface of the relief pattern forming member, and after concrete is poured, the formwork is removed from the concrete. 2. The method according to claim 1, wherein the uppermost layer of the multilayer synthetic resin film is peeled off to expose a new film surface of the next layer and the formwork is reused.