JPH10196104A - Pattern plate for concrete form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drain excessive water of concrete by providing a number of drip holes on a pattern plate for a concrete form transferring an uneven pattern on a concrete surface. SOLUTION: An uneven pattern 17 is formed on a part surrounded by the flat part 16 of a pattern plate body 1, swelling parts 12, 13 and a vertical rib 18, and a number of drip holes 3 are drilled to constitute a pattern plate A. At this time, the holes 3 are provided only in the upper half part of the body 1, and strength lowering of the pattern plate A accompanying the drilling of the holes 3 is suppressed. At the time of execution, the pattern plate A is attached inside a concrete form 4, and ready mixed-concrete is placed in the obverse side space of the pattern plate A. At the time, excessive water stayed on the surface of concrete C passes through the holes 3 and drained outside the pattern plate A. After concrete C is cured, an uneven pattern 17 is transferred on the surface of concrete C when the form 4 and the pattern plate A are removed. Thereby drainage and evaporation of excessive water are promoted, a curing period can be shortened, and prescribed strength and a dry contraction rate can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pattern plate for a concrete form used to transfer an uneven pattern onto the surface of concrete.

[0002]

2. Description of the Related Art As a process for imparting variability and improving appearance to the surface of a foundation concrete of a building, the surface of the foundation concrete is roughened by applying, spraying, or tiling. It has been conventionally performed to form the base concrete to match the appearance of the foundation concrete with the appearance of the building. However, it has been pointed out that such a process requires a great deal of labor and labor, and also requires a long construction period and high cost.

[0003] The applicant of the present application has disclosed in Japanese Patent Laid-Open No. 8-218.
No. 625 proposes that a pattern plate having an uneven pattern is attached to a concrete formwork and a fresh concrete is cast to transfer the shape of the uneven pattern of the pattern board to the surface of the cured concrete. In this way, the shape of the uneven pattern of the pattern board is transferred to the concrete surface just by performing the concrete release method, without performing mortar treatment or tiling, etc.
The appearance of the foundation concrete can be matched to the appearance of the building.

[0004]

The mixing ratio of cement and water of the ready-mixed concrete poured into the concrete casting space formed by the concrete formwork is determined by the flowability of the ready-mixed concrete in the space. There is a little excess of water to increase. Therefore, after placing the ready-mixed concrete in the space, surplus water often accumulates on the surface of the concrete, and when such surplus water remains accumulated, it is not only necessary to lengthen the curing period but also In some cases, it may be difficult to obtain the expected concrete strength after curing, or the drying shrinkage of the concrete may not be as initially set.

The present invention has been made in view of the above circumstances, and by providing a drainage function to the above-mentioned pattern board, the drainage of the water in the poured ready-mixed concrete can be quickly performed. The purpose is to promote the evaporation of surplus water.

[0006]

A pattern plate for a concrete form according to the present invention is arranged along the inner surface of the concrete form and is used to transfer an uneven pattern to the surface of concrete. It is a board | substrate, and the drainage hole is opened in many places of the pattern board main body which has the said uneven | corrugated pattern.

[0007] When the pattern board of the present invention is mounted on a concrete form and the ready-mixed concrete is cast, as is apparent from the above description, the concrete is simply exposed and the surface of the concrete is provided with an irregular pattern. Is transferred. In addition, surplus water of the poured ready-mixed concrete is discharged to the outside of the pattern plate through the drain hole of the pattern plate and escaped, and evaporation of excess water discharged from the drain hole is promoted. Therefore, a situation in which surplus water remains on the concrete surface is less likely to occur.

[0008] In this pattern board for concrete formwork,
It is desirable that the opening of the drain hole is determined only in the upper half of the pattern board main body.

[0009] As described above, since the excess water accumulates on the surface of the concrete, in order to discharge the excess water, a drain hole may be provided only in a portion where the excess water accumulates. In this regard, if the configuration in which the opening of the drain hole is set only in the upper half of the pattern plate body as described above is adopted, the drain hole is not wastefully opened, and the drain hole is formed. In comparison with the case where the pattern plate is provided over the entire surface of the pattern plate, the reduction in the strength of the pattern plate due to the opening of the drainage hole is minimized. In addition, the shape of the drain hole is less likely to be transferred to the concrete.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As can be inferred from FIG. 1, this pattern plate A has a rectangular shape in a front view. This pattern board A is
It is manufactured by vacuum forming an impermeable synthetic resin sheet or a thin synthetic resin sheet such as non-foamed polyethylene, polypropylene, or polystyrene. FIG.
As described above, the pattern plate A has the pattern plate main body 1 whose surface functions as a molding surface. At an upper end portion of the pattern board main body 1, a flange portion 2 to be superimposed on an upper surface of a concrete formwork (not shown) is bent and formed.

As shown in FIGS. 1 and 4, the pattern board main body 1 has two horizontal bulges 12 and 13 at the lower end thereof, and Recessed groove 14,1
5 is provided. The pattern board main body 1 has a flat portion 16 at the upper end thereof, which is not provided with an uneven pattern.
A vertical rib 18 bulging to the same side as the bulging portions 12 and 13 between the flat portion 16 and the bulging portion 12.
Are formed at predetermined horizontal intervals. As shown in FIGS. 5 and 6, these vertical ribs 18 are provided when the sheet or thin plate as the material of the pattern board A is vacuum-formed, and therefore, the vertical ribs 18 are provided on the back side thereof. A concave groove 19 is formed. The bulging portions 12 and 13 described above
The vertical ribs 18 serve to increase the strength of the pattern board main body 1.

In the pattern board main body 1, the flat portion 16
The portion surrounded by the bulging portions 12 and 13 and the vertical ribs 18 has an uneven shape, and the uneven shape forms an uneven pattern 17. The concavo-convex pattern 17 applied to the pattern board main body 1 may be a concavo-convex pattern formed on the concrete surface by the mortar treatment described at the beginning, or may be a concavo-convex pattern imitating a tile. Various conceivable uneven patterns may be used. The concavo-convex pattern 17 is applied when the sheet or thin plate as the material of the pattern plate A is vacuum formed. Therefore, the uneven pattern 17 of the pattern board body 1
The part marked with is uneven on both the front and back sides.

The pattern board main body 1 is provided with water drain holes 3 made of small holes at many places. In the pattern board A in the illustrated example,
The opening of the drain hole 3 is defined only in the upper half of the pattern board main body 1. This means that the surplus water of the ready-mixed concrete poured as described at the beginning accumulates on the surface of the concrete, and that the reduction in the strength of the pattern plate A due to the opening of the drainage hole 3 is suppressed as small as possible. This is because points and the like were considered. Therefore, when the pattern plate A is thick and has sufficient strength, the drainage holes 3 can be provided over the entire surface of the pattern plate main body 1. The arrangement of a large number of drain holes 3 formed in the pattern plate main body 1, that is, the opening pattern of the drain holes 3 is a scattered pattern even if the pattern is regularly arranged vertically and horizontally as shown in FIG. 1. It may be.

In the pattern plate A described above, the diameter of one drain hole 3 is preferably substantially the same as the thickness of the pattern plate body 1. Therefore, if the thickness of the pattern plate body 1 is 2 mm, it is desirable that the diameter of the drain hole 3 is also 2 mm. However, it is not always necessary to make the diameter of the drain hole 3 almost the same as the thickness of the pattern board main body 1. It may have a small diameter dimension. However, it is not preferable to make the diameter dimension large enough to allow ready-mixed concrete to flow out.

FIG. 8 shows a state in which the pattern board A is arranged and mounted along the inner surface of the concrete formwork 4, and ready-mixed concrete is cast in a concrete casting space formed on the surface side of the pattern board A. Is shown. When the concrete is poured in this way, after the flow of the ready-mixed concrete is finished and the calm, the surplus water accumulated on the surface of the concrete C is discharged to the outside of the pattern board A through the drain hole 3 of the pattern board A. Then, the gap between the concrete form 4 and the pattern board main body 1, the concave groove 19 on the back side of the vertical rib 18, the bulging portion 1
Evaporation of excess water that escapes through the recessed grooves 14, 15 on the back side of the drains 2 and 13 and that is discharged from the drain holes 3 is promoted. Therefore, a situation in which surplus water remains on the surface of the concrete C is unlikely to occur.
Here, if the drain holes 3 are scattered throughout the pattern board main body 1, there is an advantage that moisture generated during curing is quickly released to the outside of the pattern board A.

Since the pattern board main body 1 has irregularities on its back surface, a gap is inevitably formed between the concrete form 4 and the pattern board main body 1, and excess water is drained from the drain hole 3. After being discharged from the air, it flows through the gap. The pattern plate A may be attached to the concrete form 4 such that a large gap is formed between the concrete form 4 and the pattern plate main body 1.

When the concrete form 4 and the pattern board A are removed after the concrete C is cured, the shape of the uneven pattern 17 of the pattern board A is transferred to the surface of the concrete C as it is.

The pattern board A described above can be suitably used not only when constructing the foundation concrete of the building described at the beginning, but also when constructing other concrete structures.

[0019]

According to the first aspect of the present invention, the shape of the concavo-convex pattern of the pattern plate is imparted to the surface of the concrete only by performing the concrete exposing method. And, for example, it is possible to omit the labor and labor such as applying mortar treatment as a post-processing or tile application to the foundation concrete of the building to match the appearance of the foundation concrete to the appearance of the building, It is easy to shorten the construction period and reduce costs. In addition, the excess water of the poured ready-mixed concrete is quickly discharged by the function of the drainage holes in the pattern plate, and furthermore, the evaporation of the discharged excess water is promoted, so that not only the curing period is shortened,
The effect that the expected strength is developed by curing and the drying shrinkage rate of the concrete falls within the initial setting is obtained.

According to the second aspect of the present invention, the opening of the drain hole is defined only in the upper half of the pattern plate main body. In comparison, the reduction of the strength of the pattern board due to the opening of the drainage hole is minimized, and the shape of the drainage hole is less likely to be transferred to the concrete, so the concrete construction is performed more reliably. This has the effect.

[Brief description of the drawings]

FIG. 1 is a partial front view of a pattern board showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged view of a part III in FIG. 2;

FIG. 4 is an enlarged view of a part IV in FIG. 2;

FIG. 5 is a sectional view taken along the line VV of FIG. 1;

FIG. 6 is an enlarged view of a portion VI in FIG. 5;

FIG. 7 is an enlarged view of a portion VII in FIG. 5;

FIG. 8 is an explanatory diagram showing a use state of the pattern board in a cross section.

[Description of Signs] A Pattern board C Concrete 1 Pattern board body 3 Drainage hole 4 Concrete formwork 17 Uneven pattern

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasushi Matsumoto 1-1-88 Oyodonaka, Kita-ku, Osaka Sekisui House Co., Ltd.

Claims (2)

[Claims] 1. A pattern board for a concrete formwork arranged along an inner surface of a concrete formwork for transferring a shape of a concavo-convex pattern to the surface of concrete, wherein the patternboard body having the concavo-convex pattern is provided. A pattern board for concrete formwork, characterized in that drain holes are opened in many places. 2. The pattern plate for a concrete formwork according to claim 1, wherein the opening of the drain hole is defined only in an upper half portion of the pattern plate main body.