JPH08229905A - Production of concrete block whose surface is partially subjected to surface roughening finish by washing finish - Google Patents

Abstract

PURPOSE: To easily and accurately form a desired washing finish part, for example, a line, a surface, a character or a pattern when a part of the surface of a concrete block is subjected to surface roughening finish by washing finish. CONSTITUTION: In the production of a concrete block of which the surface is partially subjected to surface roughening finish by washing finish, a rubber plate material 20 having magnetism is magnetically attracted to a part of the surface 11 of an iron form 10 and a coagulation retarder 30 of concrete is applied to the surface opposite to the magnetic attraction surface of the rubber plate material to the form surface 11 and concrete kneaded with aggregate 3 is cast in the iron form 10 to be coagulated. The iron form 10 is removed and the uncured part of the surface of a part being in contact with the coagulation retarder 30 of a concrete block 1a is subjected to washing finish.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a concrete block, and more particularly to a method for finishing a rough surface by exposing aggregate on a part of the surface by washing.

[0002]

2. Description of the Related Art As a method of roughening the surface of various concrete blocks, there are tapping finish, polishing finish, and washout finish. In this case, when washing out, apply a setting retarder to the part of the mold surface that contacts the concrete beforehand, and uncured the concrete surface while washing it with water using a wire brush etc. The concrete of is scraped off, the aggregate is exposed and the surface is roughened.

[0003]

However, when washing out a part of the surface of the concrete block, it is necessary to separately apply the set retarder, which requires caution and skill. In addition, the setting retarder may flow out from the coating surface before the concrete is poured into the mold, which may break the boundary line between different coatings. Furthermore, when a pattern is drawn on the wash-out surface, the pattern must be drawn one by one with a coating brush, resulting in poor workability and lack of uniformity in the pattern. Alternatively, there is also a method in which a template in which a pattern is die-cut is applied to the surface of the mold, but if the surface of the mold is a curved surface, it is not possible to uniformly apply the flat mold. Then, when the used mold is washed, it is necessary to wash the setting retarder remaining on the mold surface.

In view of the above problems, it is an object of the present application to provide a desired washout portion such as a line, a surface, a letter or a pattern when a partial surface of a concrete block is roughened by washing out. Is to provide a manufacturing method that can be easily and accurately produced. Specifically, application of the setting retarder, which is a pretreatment for washing out, does not require special caution or skill, and it is not necessary to draw a pattern one by one when patterning the washing-out part, and if necessary, A uniform pattern can be drawn, even if the mold surface is a curved surface, it does not hinder application, after demolding, the setting retarder does not remain on the mold surface, part of the surface is roughened by washing out To provide a method of manufacturing the concrete block.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems and to achieve the object thereof, the present invention provides a "method for producing a concrete block whose surface is partially roughened by washing, A) A rubber-like plate material having magnetism was magnetically adhered to a part of the mold surface of the iron mold, and a concrete setting retarder was applied to the opposite side of the rubber-like plate material to the mold surface. After or (B) applying a concrete setting retarder to one side of the rubber-like plate material having magnetism, and magnetically adhering the opposite side of the application surface of this rubber-like plate material to a part of the mold surface of the iron formwork. After
The concrete mixed with the aggregate was poured into the iron mold to cause it to solidify, the iron mold was demolded, and the uncured portion of the partial surface of the concrete block that was in contact with the setting retarder was washed out. The thing was made into the gist. "Iron formwork"
May be an alloy containing iron, and it is essential only that the magnet can be magnetized.

[0006]

By adopting the above means, according to the present invention, the rubber-like plate material can be easily cut out and cut into a desired shape. Further, the magnetic attachment allows the rubber-like plate material to be positioned on the surface of the mold frame freely, and can be rearranged freely even if the positioning is wrong. Further, since it is a rubber-like material, even if the mold surface is a curved surface, it can be magnetized following the curved surface. Further, since the setting retarder is applied to the rubber-like plate material, it is not necessary to directly apply it to the iron mold, so that the setting retarder does not remain on the mold surface.

[0007]

【Example】

(Embodiment 1) Next, an embodiment of the concrete block manufacturing by the manufacturing method of the present invention will be described for the case where the concrete block is a boundary block. As shown in FIG. 3, the boundary block 1 manufactured in this embodiment has a laterally long, substantially cubic shape, and the upper corner thereof is a washout portion 2.

The manufacturing method of the present invention will be described below by sequentially explaining the manufacturing process of the boundary block 1 with reference to FIG. First, a mold is assembled with an iron mold 10 as shown in FIG. 2, and the boundary block 1 is turned upside down. The iron mold 10 has a chamfered portion 11a in which the lower corner of the mold surface 11 is curved (see FIG. 1).
(A)) corresponds to the washing-out section 2 shown in FIG. Next, the rubber-like plate material 20 having magnetism is magnetically attached to the chamfered portion 11a. The rubber-like plate member 20 has a strip shape shown in FIG. 2 and is attachable to and detachable from the iron mold 10 (FIG. 1 (b)). Then, a setting retarder 30 that delays the setting of the green concrete is applied to the entire surface of the rubber-like plate material 20 opposite to the magnetically bonded surface (FIG. 1 (c)). Next, the raw concrete 5 in which the aggregate 3 is mixed is poured into the iron formwork 10 halfway until the rubber-like plate material 20 is sufficiently filled, and the raw concrete 6 not containing the aggregate is poured to a desired depth. Pour until it becomes (Fig. 1 (d)). After that, a curing period is set to wait for the setting of the ready-mixed concrete 5 and 6. Then, when the setting is substantially completed, the iron mold 10 is demolded while only the green concrete 5a contacting the setting retarder 30 is uncured. Of course, the rubber-like plate material 20 is also peeled off from the boundary block 1 (FIG. 1 (e)). Finally, the uncured ready-mixed concrete 5a is washed out by shaving it with water and a wire brush, and the washed-out portion 2 is obtained (FIGS. 1F and 1G).

According to such a method, by preparing a large number of rubber-like plate materials that can be easily cut out, it is possible to manufacture a boundary block in which the washout portion is standardized. Further, the rubber-like plate material can be freely positioned by the magnetic attachment, and even if the positioning is mistaken, the rubber-like plate material can be displaced and easily rearranged. Moreover,
Since it is rubber-like, even if the mold surface is a curved surface, it can be adhered and polymerized following this. Further, since the setting retarder is applied to the rubber-like plate material, it is not necessary to apply it to the iron mold, and the setting retarder does not remain on the mold surface.

(Embodiment 2) Embodiment 2 shown in FIG. 4 shows a case where the concrete block is an L-shaped retaining wall block 1b manufactured by the same manufacturing method as in Embodiment 1. The washout portion 2 has a circular pattern on the retaining wall on the road side.

(Embodiment 3) Embodiment 3 shown in FIG. 5 shows a case where a concrete block manufactured by the same manufacturing method as that of Embodiment 1 is a stop block 1c, and The washout section 2 on the retaining wall shows the name of the local government of the road construction operator in pattern letters.

The present invention is not limited to the above-mentioned embodiment, but the rubber-like plate material may be cut out into various patterns so as to have an elaborate design and shape. Further, the rubber-like plate material may be any member without departing from the gist of the present invention,
Any material can be used as long as it can have magnetism, can be easily cut into various shapes, and can be polymerized by following the curvature of the mold surface.

As described above, according to the present invention, the rubber-like plate material can be easily cut out and can be cut out into a desired shape. Therefore, various patterns and decorative characters can be expressed in the wash-out part. Further, the magnetic attachment allows the rubber-like plate material to be freely positioned on the surface of the mold frame, and even if the positioning is mistaken, it can be easily slipped by hand and rearranged freely. Further, since it is a rubber material, even if the mold surface is a curved surface, it can be magnetically adhered to the curved surface. Further, since the setting retarder is applied to the rubber-like plate material, it is easier to apply different colors than when applied directly to the surface of the mold, and anyone can apply the same. Moreover, since it is not necessary to apply it to the surface of the mold, the set retarder does not remain, so that the iron mold can be easily cleaned.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a manufacturing procedure according to a manufacturing method of a first embodiment.

FIG. 2 is a cutaway perspective view showing a state in which a boundary block is manufactured by the manufacturing method according to the first embodiment, with an aggregate being omitted.

FIG. 3 is a perspective view of a boundary block according to the first embodiment.

FIG. 4 is a perspective view of an L-shaped retaining wall block according to a second embodiment.

FIG. 5 is a perspective view in which an aggregate of a suspension block of Example 3 is omitted.

[Explanation of symbols]

1a Border block as a concrete block 1b L-shaped retaining wall block as a concrete block 1c Stop block as a concrete block 2 Washout part 3 Aggregate 10 Iron formwork 11 Formwork surface 11a Chamfer part 20 Rubbery Plate material 30 Set retarder

Claims (1)

[Claims] 1. A method for producing a concrete block, a part of the surface of which is roughened by washing out, wherein: (A) a part of the mold surface of an iron mold is made of a magnetic rubber plate material. And a concrete set retarder is applied to the side of the rubber-like plate material opposite to the magnetically adhered surface to the formwork surface, or (B) a concrete set retarder is applied to one side of the rubber-like plate material having magnetism. Was applied, and after the side opposite to the coated surface of this rubber-like plate material was magnetically adhered to a part of the formwork surface of the iron formwork, concrete was poured into the iron formwork to condense and congeal, The iron form was removed from the mold, and the uncured portion of the partial surface of the concrete block that was in contact with the setting retarder was washed out.Part of the surface was roughened by washing out. Concrete block manufacturing method.