JPH09201809A - Manufacture of concrete formed product having colored surface layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a concrete formed product into which a colored surface layer which is excellent in weathering resistance and strength is integrated by a method wherein a colored surface layer is formed by a mixture of specific slump colored cement, sand, and water, and after pouring concrete mixture, vibration is applied thereto. SOLUTION: A mixture of colored cement of 15-25 Slump, sand, and water is casted into a shuttering 2 set on a table vibrator 1 to form a suitable thickness colored surface layer 3. Then, a concrete mixture 5 forming a basis of a formed product is casted from a hose 6 onto the colored surface layer 3. Thereafter, vibration is applied thereto for 20-30min by using the table vibrator 1 to obtain a concrete formed product into which the colored surface layer 3 being free from peeling off or the like is integrated.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for producing a concrete molding having a colored surface layer. More specifically, the present invention relates to a method for integrally forming a colored surface layer, a tile-like pattern, a brick-like pattern, a stone pattern, etc. on the surface of a precast concrete molded product or a prestressed concrete molded product.

[0002]

2. Description of the Related Art Conventionally, construction work for constructing concrete walls and the like has been widely performed in the field of civil engineering or construction. In such a case, when it is necessary to color a concrete wall constructed from an aesthetic point of view, a method of directly painting the finished concrete wall or pasting various tiles is widely used. Came.

Not only is such a method unable to obtain sufficient weather resistance, but also a gap between the tile and the concrete due to erosion of rainwater and the like causes a problem such as an accident due to the peeling of the tile and the like becoming a social problem. is there.

Further, since the method of directly constructing a concrete wall at a construction site requires a long construction period and a lot of manpower, a wall material and a pillar material necessary for forming a building to be constructed are made in advance today. , The method of assembling and constructing this on site has come to be adopted, and it has come to contribute to the drastic reduction of the construction period and the reduction of the construction cost.

Even in the case of such a precast concrete molded product or a prestressed concrete molded product, in the case of coloring the surface, direct painting or pasting of tiles or the like is generally performed as in the conventional case. Problem has emerged and is becoming a problem.

[0006]

In order to solve such problems, the present inventor has formed a pattern such as a colored layer, a tile shape, a brick shape or a stone pattern on the surface of a precast concrete molded article or a prestressed concrete molded article. As a result of diligent study, we have developed a method that can be integrally molded to realize a concrete molded product that not only has excellent weather resistance and strength but also has an aesthetically pleasing colored surface layer that does not cause peeling at all. The invention was completed.

[0007]

According to the method of the present invention, a mold is placed on a table vibrator, and slumps 15 to 25, preferably slump 17, are placed in the mold.
By pouring a mixture of colored cement of No. 23 to 23 and sand and water to form a colored surface layer of an appropriate thickness, and then pouring a concrete mixture to form a base layer of a molded article, and then applying vibration of appropriate strength for an appropriate period of time, Not only is the surface of the colored surface layer very smooth and beautiful, but since the surface layer and the concrete base layer are integrally formed, it is possible to realize a concrete molded product with extremely excellent strength.

Further, as another embodiment of the method according to the present invention, a fence-shaped form bottom plate made by combining a cross-shaped mold material having a release treatment on the side in contact with the colored surface layer in a desired shape is used in the form. It is installed at the bottom, and after pouring a mixture of white or brick-colored cement, sand, and water on it, pouring the concrete mixture that constitutes the base layer of the molded product and applying vibration, it is formed integrally with the base layer. It is possible to easily obtain a concrete molded product having a tile pattern or a brick pattern.

In yet another embodiment of the method according to the present invention, the slumps 15 to 25, preferably slumps 17 to 23, on a colored surface layer formed by a mixture of colored cement and sand and water. A concrete mixture forming a base layer of a molded article is provided by arranging an appropriate number of nodular concretes of slumps 2 to 7, and preferably slumps 3 to 5, which have the same or different color as the colored cement forming the surface layer, and which are darker. By pouring and giving vibration, the nodule concrete can be gradually melted into the colored surface layer and the concrete base layer to form a concrete pattern like a stone pattern. In this case, if a mixture having the same color as that of the colored surface layer is used as the concrete mixture forming the base layer, it is possible to realize a stone-patterned concrete molded product in which the entire molded product has the same color as the surface.

[0010]

EXAMPLES The present invention will now be described with reference to examples, but the present invention is not affected by this.

As a first embodiment, a mixture of slump 15 to 25, preferably slump 17 to 23, which is a mixture of light-colored cement (for example, brick color), sand and water, is placed on the table vibrator 1 as shown in FIG. The colored surface layer 3 is formed by pouring it into the mold 2 installed on the slump 2 to 7 of a darker brick color,
Desirably, after arranging an appropriate number of nodular concretes 4 having various shapes and having various shapes of the slumps 3 to 5 at appropriate places, an ordinary concrete mixture 5 constituting the base layer of the molded product is transferred from the hose 6 to the FIG. Pour as shown. Then use Table Vibrator 1 for 20 minutes to 3
When 0 minute vibration is applied, a concrete molded product having a colored surface layer 7 which is a stone texture pattern formed by melting a dark colored nodular concrete 4 into a light colored colored surface layer 3 as shown in FIG. 3 and has an extremely smooth surface. Is obtained.

When a colored cement mixture of the same light brick color as the colored surface layer 3 is used as the concrete mixture 4 constituting the base layer in the same manner as in the above-mentioned embodiment, as shown in FIG. A molded product having a colored surface layer 7 in the shape of a brick pattern showing a brick color is integrally obtained.

In the next embodiment, as shown in FIG. 5, a fence-shaped bottom plate 9 is formed by combining the cross-shaped members 8 which have been released by a method such as coating wax on the side in contact with the colored surface layer.
Is placed on the inner bottom of the formwork 2, and a mixture of white or brick-colored cement, sand, and water is poured over this to form a colored surface layer 3
After forming, the ordinary concrete mixture that forms the base layer of the molded product is poured from the pouring hose 6 and is vibrated for about 20 minutes by the table vibrator 1. The tile joint pattern or the brick joint pattern has a very beautiful color and A concrete molding having a smooth surface layer 3 is integrally obtained.

As described above, a concrete molded product having a very smooth colored surface layer can be easily obtained by the method according to the present invention. In addition, when it is necessary to insert a reinforcing bar or the like for molding, it can be freely performed when pouring concrete constituting the base layer.

[0015]

As described above, by using the method according to the present invention, not only a surface layer having a desired color can be formed on the surface of a concrete molded product such as a precast concrete molded product or a prestressed concrete molded product but also a tile. You can easily express desired patterns such as joint pattern, brick pattern or stone pattern.
Since the surface layer formed is extremely smooth and is formed integrally with the concrete layer constituting the base layer, it is possible to provide a concrete formed product having extremely excellent strength.

[Brief description of drawings]

FIG. 1 is a schematic view showing a state in which dark colored nodular concrete is arranged on a light colored colored surface layer.

FIG. 2 is a schematic diagram showing a state in which a concrete mixture forming a base layer of a molded product is poured on the colored surface layer and the nodular concrete shown in FIG.

FIG. 3 is a surface view of a colored surface layer completed as a stone pattern pattern by vibrating the surface layer shown in FIG.

FIG. 4 is a schematic side view of a concrete block having a tint block pattern, in which the same light-colored cement mixture is used as a concrete mixture constituting a base layer on the surface layer shown in FIG. 1;

FIG. 5 is a partially enlarged schematic view showing an embodiment in which a concrete molded product having a tile pattern pattern or a brick pattern pattern surface layer is formed by using a fence-shaped form bottom plate formed by combining cross-shaped pattern members.

[Description of part number]

 1 Table Vibrator 2 Formwork 3 Colored Surface Layer 4 Nodule Concrete 5 Concrete Mixture 6 Pouring Hose 7 Completed Colored Surface Layer 8 Crosspiece 9 Rail-like Formwork Bottom Plate

Claims (3)

[Claims] 1. A colored surface layer having an appropriate thickness is formed by pouring a mixture of colored cement of slumps 15 to 25 and sand and water into a mold installed on a table vibrator to form a base layer of the molded product. A method for producing a concrete molded product having a colored surface layer, which comprises applying vibration of an appropriate intensity for an appropriate period of time after pouring the concrete mixture. 2. A fence-shaped form bottom slab formed by combining a cross-shaped form material having a release treatment on the side in contact with the colored surface layer in a desired shape is installed at the inner bottom of the form. The method described. 3. A slump 2 to 7 on the colored surface layer.
The method according to claim 1, characterized in that the nodular concrete of the same color as or different from the surface layer of (1) and a dark color is arranged in an appropriate number and in an appropriate place.