JP2676575B2 - Concrete surface repair method and colored repair sheet used therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing defective recesses on the surface of concrete and a colored repair sheet used therefor.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, when a recessed portion 2 such as a recessed portion, a hole, a pinhole or a metal object mounting mark is formed on a concrete surface 1, repair is performed by the following two methods. It is being appreciated. The first repair method is performed as follows. That is, first, as shown in FIG. 6, the concrete material 3 is filled in the defective recesses 2 on the concrete surface 1. On the other hand, a paint for coloring the concrete surface 1 is prepared such as color matching. Then, as shown in FIG. 7, by spraying the prepared paint 14 on the concrete surface 1 and curing and hardening the concrete material 3,
The defective recess is repaired (see FIG. 8).

The second method is as shown in FIG.
This is a repair method in the case where a defective concave portion is formed on a wall surface of which the concrete surface is colored and decoratively finished, and is performed as follows. That is, first, a pigment is mixed with a concrete material to prepare a colored cement paste in which the color matching is adjusted. Next, as shown in FIG. 10, the above-mentioned colored cement paste 5 is filled into the defective recesses 4 on the concrete surface 1. In the figure, reference numeral 6 is a colored decorative finish layer which is previously formed on the concrete surface 1. Then, the filled concave cement paste 5 is cured and hardened to repair the defective recess 4.

[0004]

However, the above-mentioned conventional repair method has the following problems. First, in the first method, there is a large difference in water content between the part filled with the concrete material 3 and the other part on the sprayed surface of the prepared colored paint, and as the cement paste 3 dries, Unevenness occurs with the part. Therefore, in order to prevent this color unevenness, a separate step of previously performing color matching of the colored paint in consideration of the above phenomenon is required, and this requires many years of experience. In addition, in the case of coloring in several colors instead of one color, color matching must be performed individually, and further spray drying for each color and spraying a new colored paint after drying, the process is complicated and it takes a long time. . This work also requires specialized skills.

Further, in the second method, color unevenness occurs between the portion filled with the colored cement paste and the other portion as the drying progresses, and this color unevenness is prevented. In order to do so, it is necessary to select a color of the pigment to be mixed in the cement paste in advance, and to perform color matching by mixing, and this also requires many years of experience. Moreover, in the case of a plurality of colorings, colored cement pastes corresponding to the number of the colors have to be prepared separately, and the number of work steps such as color matching increases, which is very complicated.

The present invention has been made in view of the above circumstances, and provides a concrete repairing method and a colored repairing sheet used therefor, which can repair a defective recessed portion of concrete easily and in a short period of time without feeling uncomfortable with the surroundings. To that end.

[0007]

In order to achieve the above-mentioned object, the present invention provides a large number of colored granules on one surface of a base material through an adhesive layer whose adhesive strength is reduced by moisture in concrete material. A step of preparing a colored repair sheet that is distributed, a step of filling the concrete material into the concave recesses on the concrete surface, and affixing the surface on which the colored particles of the colored repair sheet are distributed to the concrete material filling surface, and A step of reducing the adhesive force of the adhesive layer due to moisture in the material to transfer and adhere the colored granules to the concrete surface, and after curing and curing the concrete material filled in the defective recesses, the colored repair sheet from the concrete surface The first gist is a concrete surface repairing method that includes a step of peeling the base material. The colored repair sheet a number of colored granules through the adhesive layer a force is decreased is distributed to the second aspect.

[0008]

That is, the present invention uses a colored repair sheet in which a large number of colored particles are distributed on one surface of a base material through an adhesive layer whose adhesive force is reduced by moisture in concrete material and the like. A repair sheet is attached to a defective recess filled with concrete material, the adhesive strength of the adhesive layer is reduced by the water content in the concrete material, and the colored granules are transferred and adhered to the concrete surface to cure and cure the concrete material. After that, the colored repair sheet is peeled off from the concrete surface. Therefore, if the same colored material used on the concrete surface other than the repaired portion is used for the colored repair sheet, color unevenness with other portions does not occur, and it is not necessary to perform troublesome color matching. Further, even in the case of a plurality of colorings, the repairing is performed only by forming a plurality of colorings on the coloring repair sheet, and the repairing is easily performed without a complicated process.

Next, the present invention will be described in detail.

In the concrete repair method of the present invention, a colored repair sheet is used in which a large number of colored particles are distributed on one surface of a base material via an adhesive layer.

The material of the base material is not particularly limited as long as it has flexibility, and a rubber elastic body,
Plastics, paper, cloth, etc. are mentioned. Vinyl chloride resin and the like are particularly preferable. Further, as the thickness of the base material,
It is preferably set to 5.0 mm or less.

The pressure-sensitive adhesive layer is formed by applying an adhesive or pressure-sensitive adhesive to the surface of the base material. As the above-mentioned adhesive or tackiness agent, one whose tackiness is reduced or eliminated due to water, alkali components, etc. in the concrete material is used. The water content in the concrete material is meant to include not only water but also alkali components and the like. Examples of the adhesive whose adhesive strength is reduced or disappears when it meets moisture in the concrete material include methyl cellulose adhesive, polyvinyl alcohol adhesive, water glass and the like. In addition, as the thing that the adhesive force is reduced or disappears by meeting with the alkaline component in the concrete material,
For example, a two-component acrylic pressure-sensitive adhesive can be used. The thickness of the coating film formed by applying the adhesive or the pressure-sensitive adhesive is in the range of 0.1 to 5.0 mm.

As the colored particles distributed through the adhesive layer, colored crushed stone particles of natural stone, ceramic particles, glass particles and the like are used. As the colored particles, for example, particles having a particle size in the range of 0.01 μm to 8.0 mm are preferably used. Then, as a method for distributing a large number of the colored particles in the adhesive layer, a method of adhering a large number of colored particles to the adhesive layer by pressure spraying, a method of spraying a large number of colored particles in the adhesive layer, pressing, etc. Depending on the method, a method of performing embedded anchor processing or a combination of both methods is used. Note that the number of colors is appropriately set.

In the present invention, the above-described colored repair sheet is used to repair the defective recesses on the concrete surface as follows. That is, the concrete material is filled in the defective recesses on the concrete surface. Next, the colored repair sheet is attached, the concrete material is cured and cured, and then only the base material of the colored repair sheet is peeled off from the concrete surface.
Through this series of steps, the colored particles on the base material are transferred and adhered to the concrete surface, and the defective recesses are repaired.
In this case, for fixing the colored granules to the base material, those whose adhesive strength is reduced due to the water content and the alkaline component in the concrete material are used. Since the adhesive strength of the adhesive layer that has been fixed to the base material is weakened or disappears, it becomes possible to easily separate only the base material from the concrete surface. In this way, the colored granules are adhered to the concrete surface, so that unevenness in color between the repaired portion and other portions does not occur, and repairing is performed without a sense of discomfort.

[0015]

INDUSTRIAL APPLICABILITY As described above, the present invention provides a colored repair sheet in which a large number of colored particles are distributed on one surface of a base material through an adhesive layer whose adhesive force is reduced by moisture in concrete material. Using this, the colored repair sheet is attached to a defective recess filled with a concrete material, the adhesive strength of the adhesive layer is reduced by the water content of the concrete material, etc., and the colored granules are transferred and adhered to the concrete surface. After curing and hardening the material, the colored repair sheet is peeled off from the concrete surface. As described above, during the curing and hardening of the concrete material, the adhesive force of the adhesive layer is weakened by moisture and the like in the concrete material, and the colored granular material held in the adhesive layer is condensed on the surface of the concrete material where it is solidifying. Transfer bonded. In this way, since the defective recess is repaired, if the same colored material used on the concrete surface other than the repaired part is used for the colored repair sheet, color unevenness with other parts does not occur, It will be repaired without any discomfort in appearance. Moreover, there is no need to perform troublesome color matching. Further, even in the case of a plurality of colorings, the repairing is performed only by forming a plurality of colorings on the coloring repair sheet, and the repairing is easily performed without a complicated process.

Next, the present invention will be described based on examples.

[0017]

Example 1 FIG. 1 shows an example of a colored repair sheet of the present invention. This colored repair sheet 10 has a thickness of 0.1 mm.
An adhesive layer 12 having a thickness of 5.0 mm formed by applying a water-soluble methyl cellulose adhesive is formed on one surface of the vinyl chloride resin sheet 11. A large number of colored crushed stone particles 13 of natural stone are adhered to the surface of the adhesive layer 12 by pressure spraying. Then, as shown in FIG. 2, the concrete material 3 is filled into the defective recess 2 of the concrete surface 1. In the figure, reference numeral 6 is a colored decorative finish layer which is previously formed on the concrete surface 1. Next, as shown in FIG. 3, the colored repair sheet 10 is attached to the concrete material filled portion. Then, the filled concrete material 3 is cured and hardened. Next, FIG.
As shown in, the vinyl chloride resin sheet 11 of the colored repair sheet 10 is peeled off from the repaired portion of the concrete surface 1. At the time of this peeling, since the adhesive layer 12 made of water-soluble methyl cellulose is dissolved in the water in the concrete material 3 and disappeared, only the vinyl chloride resin sheet 11 of the colored repair sheet 10 can be easily peeled off. In this way, the large number of colored crushed stone particles 13 of natural stone were adhered to the surface of the repaired portion, and the defective recessed portion 2 was repaired without causing any unevenness in color with other portions.

[0018]

Example 2 A two-component acrylic adhesive was used in place of the methylcellulose adhesive of Example 1 above. Other than that, the colored repair sheet was formed in the same manner as in Example 1, and the defective recess 2 on the concrete surface 1 was repaired in the same manner as in Example 1 above. On the repaired concrete surface, the defective recessed portion 2 was repaired without causing any color unevenness with other parts and without any discomfort.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a colored repair sheet of the present invention.

FIG. 2 is an explanatory diagram showing a state where a defective concave portion on the surface of concrete is filled with concrete material.

FIG. 3 is an explanatory diagram showing a state in which the colored repair sheet is attached to a concrete surface.

FIG. 4 is an explanatory view showing a state in which a defective concave portion on a concrete surface is repaired using the colored repair sheet.

FIG. 5 is an explanatory diagram showing a conventional method for repairing a defective recess on the surface of concrete.

FIG. 6 is an explanatory view showing a conventional method for repairing a defective recess on the surface of concrete.

FIG. 7 is an explanatory diagram showing a conventional method for repairing defective recesses on the surface of concrete.

FIG. 8 is an explanatory diagram showing a conventional method for repairing a defective recess on a concrete surface.

FIG. 9 is an explanatory diagram showing a conventional method for repairing a defective recess on the surface of concrete.

FIG. 10 is an explanatory view showing a conventional method for repairing a defective recess on a concrete surface.

[Explanation of symbols]

 1 Concrete surface 2 Defect recess 3 Concrete material 10 Colored repair sheet 11 Vinyl chloride resin sheet 12 Adhesive layer 13 Colored crushed stone particles

Claims (2)

(57) [Claims] 1. A step of preparing a colored repair sheet in which a large number of colored particles are distributed on one surface of a base material through an adhesive layer whose adhesive force is reduced by moisture in concrete material and the like; A step of filling the concrete material into the defective recesses, and affixing the surface of the colored repair sheet on which the colored particles are distributed to the concrete material filling surface, and reducing the adhesive force of the adhesive layer due to water in the concrete material, etc. Concrete surface repair comprising a step of transferring and adhering the colored granules to a concrete surface, and a step of curing and curing the concrete material filled in the defective recesses, and peeling the colored repair sheet from the concrete surface. Method. 2. A colored repair sheet characterized in that a large number of colored particles are distributed on one surface of a base material through an adhesive layer whose adhesive strength is reduced by moisture in concrete material or the like.