JPH01174768A - Concrete formation and jig therefor - Google Patents

Abstract

PURPOSE:To improve the extent of forming accuracy by setting up a plate body in keeping a clearance from the surface of an uneven pattern and, after a liquid resin material is filled up in this clearance and hardened, cutting a protruded part and then making a protuberant forming part so as to be constituted. CONSTITUTION:A form body 12 with an uneven pattern on the surface is constituted of plywood 13 and uneven pattern forming material made of urethane resin, and a keep plate 15 is held at a fixed interval from the plywood 13 via a pipelike jig 16. Next, hard urethane form 18 is filled up in a clearance between the plate 15 and the body 12 and, after being hardened, cutting it out along a peripheral edge of the plate 15, and a side frame 19 is erected. Then, a tip of the side frame 19 is made contact with the surface of a base substance 20, a frame 11 is assembled to the base substance 20, paste concrete 21 is poured into a formed concrete forming space part, and the form 11 or the like is removed after hardening. Consequently, accuracy of an opening is thus improvable.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has a surface formed with an uneven pattern, and
The present invention relates to a concrete forming method for forming a concrete layer having an opening formed in a part of its surface, and a jig used therein.

C. Prior Art] In general, to form a concrete layer having an uneven pattern on the surface, a mold is used, as shown in FIG. 7, in which an uneven pattern forming material 2 made of urethane resin or the like is pasted on the surface of a substrate 1 made of plywood. A frame body 3 is used. When forming a concrete layer having an opening on the surface for providing a window or a door, the surface is formed to be flat and the back surface is the unevenness of the above-mentioned uneven pattern forming material 2. An inverted mat 4 or the like formed with a concavo-convex pattern corresponding to the pattern is arranged with the concavities and convexities on its back side fitted into the concavities and convexities of the concavo-convex pattern forming material 2, and the portions that will become the edges are made planar. Next, the opening forming portion 6a is enclosed by disposing a side frame 6 between the concrete layer forming base 5, which is disposed at a predetermined distance from the form body 3, and this flat surface. In this state, paste concrete 7 is poured into the space formed by the formwork constituted by the formwork body 3 and side frames 6 and the concrete layer forming base 5. Alternatively, instead of the above-mentioned inverted mat 4, a flat sponge and a plate-like body are used, and as shown in FIG. By doing so, they are fitted to form a flat surface for attaching the side frame, and other forms and the like are assembled to form a concrete layer 7a in the same manner as shown in FIG. In FIGS. 7 and 8, 10 is a crosspiece used for assembling formwork and the like.

[Problem that the invention seeks to solve]

However, among the above-mentioned methods, the method using the inverted mat 4 has no versatility because it requires the use of an inverted mat 4 that matches the opening every time an opening with a different shape is formed. Therefore, according to the shape of the opening and the uneven pattern,
There is a problem in that a wide variety of inverted mats 4 must be manufactured, which requires excessive labor and expense. In addition, in the method using the sponge 9 and the plate-like body 8, the sponge 9
The end surface 9a of the plate-shaped body 8 becomes uneven due to the pressure of the plate-shaped body 8, or the plate-shaped body 8 becomes oblique with respect to the substrate 1. Therefore, the opening edge of the concrete layer 7a corresponding to the end surface 9a becomes uneven, and the depth of the opening becomes uneven. Therefore, there is a problem in that the convex portions and shallow portions of the unevenness must be scraped off after forming the concrete layer, which is extremely complicated work.

The present invention was developed in view of the above circumstances, and it is possible to form a concrete layer with an uneven pattern on the surface and with openings in some parts, accurately, efficiently, and economically. The purpose of this invention is to provide a method for forming concrete that can form concrete, and a jig for use in the method.

[Means for solving problems]

In order to achieve the above purpose, this concrete forming method uses a formwork that has an uneven pattern on the surface and is raised in a part corresponding to the opening of the concrete layer to be formed, and a formwork for forming the concrete layer. This is a concrete forming method in which a concrete layer is formed facing a base at a predetermined interval, and paste concrete is poured into the gap to form a concrete layer with an uneven pattern formed on the surface and openings provided in some parts. As the above-mentioned formwork, a plate-shaped body is arranged to maintain a gap from the surface of the uneven pattern, and a liquid resin material is poured into the gap and cured in a state where it protrudes from the gap. The first gist is a concrete forming method characterized by using a concrete molding method in which parts are cut to match the end faces of a plate-shaped body, and the concrete forming method is characterized in that a concrete forming method is used in which parts are cut to match the end faces of a plate-shaped body, and the surface of a formwork is formed by forming an uneven pattern on the surface of a substrate. , a jig used for attaching a plate-like body at a predetermined distance from the surface thereof, the pipe body having a lower end that can pass through the uneven pattern portion to reach the substrate, and a pipe body that is inserted through the pipe body. The second gist is a jig used for concrete forming, characterized by comprising a screw lamp body fixed to the substrate.

[Function] That is, in this concrete 1 forming method, as in the conventional example, an inverted mat is applied to the part of the formwork body whose surface has an uneven pattern, corresponding to the opening edge of the concrete layer to be formed. Instead of forming a flat part by fitting a mold or sponge, using that flat part to assemble side frames, etc., and pouring paste concrete into the space formed by this, first, A plate-shaped body is placed in a portion of the concrete layer corresponding to the opening, with a gap maintained from the surface thereof. Next, a liquid resin material is poured into the gap and cured, and the protruding portion is cut to create a formwork in which a portion corresponding to the opening is raised. Next, this formwork and the base for forming a concrete layer are assembled to form a space for concrete formation, and paste concrete is poured into the space, so that the surface is formed into an uneven pattern and there are openings in some parts. It is designed to form a concrete layer with sections. Therefore, it is not necessary to manufacture the inverted mat in advance according to the shape of the opening and the uneven pattern, which is economical. Further, unlike when using a sponge, the opening edges do not become uneven or sloped surfaces, so the complicated work of scraping off the opening edges after forming the concrete layer can be eliminated. Furthermore, regarding the arrangement of the plate-shaped bodies, by nailing a jig consisting of a pipe body to the substrate of the formwork with screws or nails, the plate-shaped bodies and the substrate can be arranged in parallel, and the distance between them is The dimensional accuracy can be improved. Therefore, the precision of the concrete layer that is formed is improved. Furthermore, construction becomes easier.

Next, the present invention will be explained in detail based on examples.

〔Example〕

1 and 2 show a formwork 11 used in one embodiment of the present invention. That is, in the figure, 12 is a formwork body with an uneven pattern formed on its surface, and a plywood 13 and an uneven pattern forming material 1 made of urethane resin provided on its surface.
It consists of 4. Reference numeral 15 denotes a rectangular frame-shaped holding plate disposed on a part of the surface of the form body 12 at a constant distance from the surface. 16 are arranged in plural numbers at predetermined intervals between the presser plate 15 and the plywood 13, and the presser plate 15
It is a pipe-shaped jig that maintains the pipes in a parallel state with a constant distance from the plywood 13, and is fixed to the plywood 13 by nails 17 that pass through the uneven pattern forming material 14 and into their own holes. ing.

Reference numeral 18 denotes a hard urethane foam packed along the edge of the presser plate 15 in the gap between the presser plate 15 and the surface of the form body 12, completely blocking the inside of the frame of the presser plate 15 from the outside of the frame. are doing.

Reference numeral 19 denotes a side frame installed along the frame shape on the upper surface of the holding plate 15.

When forming a concrete layer using this formwork 11, as shown in FIG. . Then, paste concrete 21 is poured into the space formed by the outer part of the side frame 19 of the formwork 11 and the base body 20, and after it is hardened, the formwork 11 and the like are removed. As a result, a concrete layer is obtained whose surface is formed in an uneven pattern and in which some openings are provided.

The formwork 11 as described above is obtained as follows.

That is, first, the jigs 16 are disposed at predetermined intervals in the portion of the form body 12 where the temporary pressers 15 are disposed, with the jigs 16 penetrating through the uneven pattern forming material 14. Next, the jig 16 is fixed to the formwork body 12 by inserting a nail 17 into the hole of the jig 16 and nailing the nail 17 onto the plywood 13, and placing the holding plate 15 on top of the jig 16. do. Next, as shown in FIG.
to discharge liquid hard urethane foam 18a,
As shown in FIG. 5, this urethane foam 18a is filled along the frame shape of the holding plate 15 so as to protrude to the outer circumferential side of the gap 15a. Next, urethane foam 18
After a has hardened, a knife or the like (not shown) is used to cut off the outer portion of the urethane foam 18a from the portion corresponding to the outer peripheral edge of the presser plate 15 to form the state shown in FIG.

This is obtained by attaching the side frame 19 above the holding plate 15.

In this way, this mold 11 discharges the liquid foamed rigid urethane foam 18a into the gap 15a between the mold body 12 and the presser plate 15, and this foamed rigid urethane foam 18
After a has hardened, the ends are cut off to form a flat surface. Therefore, it can be easily applied to any shape of the uneven pattern or opening formed in the concrete layer, and the forming accuracy is also improved. Therefore, unlike the conventional example, there is no need to use the inverse mat 4, sponge 9, etc. in advance, which is economical, and the complicated work of scraping off the opening edges after forming the concrete layer can be reduced. . In addition, the holding plate 15 can be placed on the plywood 13 of the form body 12 using a jig 16 and screws or nails 17.
By nailing the presser board 15 and the plywood 13
and can be arranged in accurate parallel condition. Therefore, the precision of the concrete layer that is formed is improved.

In addition, in the above embodiment, the opening is one that penetrates the concrete layer, but it is not limited to this.
, also includes recesses formed on the surface of the concrete layer.

〔Effect of the invention〕

As described above, according to the method of the present invention, it is possible to easily adapt to any shape of the uneven pattern or opening to be formed in the concrete layer, improve the working efficiency, and be economical. Moreover, according to the jig of the present invention, the accuracy of the opening in the concrete layer to be formed is improved.

[Brief explanation of the drawing]

Figure 1 is a front view of a formwork used in one embodiment of the present invention, Figure 2 is a front view of a formwork used in an embodiment of the present invention;
The figure is a cross-sectional view, and Figure 3 is a cross-sectional view showing its usage condition.
4, 5 and 6 are sectional views showing how to assemble the same, and FIGS. 7 and 8 are sectional views showing the conventional example in use, respectively. 11... Formwork 12... Formwork body 13... Plywood 14... Uneven pattern forming material 15... Pressing plate 1
6... Jig 17... Nail 18... Hard urethane foam 20... Substrate 21... Concrete Patent applicant Tokai Rubber Industries Co., Ltd. Representative Patent attorney Masaru Nishifuji Hikochi 1 Figure 02

Claims (2)

[Claims] (1) A formwork that has an uneven pattern on its surface and has raised portions corresponding to the openings of the concrete layer to be formed and a base for forming a concrete layer are placed opposite to each other at a predetermined interval, and the gap between them is A concrete forming method in which paste-like concrete is poured into a concrete layer to form a concrete layer having an uneven pattern on the surface and openings in a part of the concrete layer. A plate-shaped body is arranged with a gap maintained from the surface of the uneven pattern, and a liquid resin material is poured into the gap and cured while protruding from the gap, and then the protruding part is cut to match the end surface of the plate-shaped body. A concrete forming method characterized by using a concrete formed by: (2) A jig used for attaching a plate-shaped body to the surface of a formwork formed by forming an uneven pattern on the surface of a substrate, at a predetermined distance from the surface, the lower end of which has the uneven pattern. 1. A jig used for concrete forming, comprising a pipe body that can be inserted through the pipe body to reach the base plate, and a screw body that is inserted through the pipe body and fixes the pipe body to the base plate.