JPH0813738A - Construction method for natural stone imitation sheet and concrete wall - Google Patents

Abstract

PURPOSE:To finish the surface of a concrete like the rocky surface of a natural stone, by sticking a particulate matter such as a stone powder on the surface of a water-soluble paper, and removing the water-soluble paper after the water- soluble paper is stuck on the surface of the concrete. CONSTITUTION:A particulate matter 12 such as a stone powder and crystal pieces is stuck on a water-soluble paper 10 through an adhesive 14, and the water-soluble paper is stuck on the concrete surface of a building or on the surface of a concrete composition. In this case, as the adhesive 14, a transparent coating such as an acrylic resin is utilized, and a luster is given to the surface of the particulate matter 12 so as to present the appearance like a natural stone. After that, the water is sprayed to wash out the water-soluble paper, and the water-soluble paper is melted to obtain the surface like a rocky surface of a natural stone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a natural stone imitation sheet and a concrete wall surface, and further to a method for forming a concrete structure for forming a concrete wall surface.

[0002]

2. Description of the Related Art In order to form a surface of a building made of concrete, for example, on a flat surface or a gentle slope, the concrete surface is appropriately hardened and then finished by a skilled worker (or plasterer). Further, when the formwork is used when forming the concrete wall body at the construction site, the surface formwork is used so as to form the concrete surface. In this case, the surface of the wall body exposes the skin of the cast concrete itself, which may be manually corrected or finished as a post process. Further, a concrete molded product (concrete secondary product) having a predetermined shape is manufactured by placing concrete in a concrete formwork and hardening it in a factory.

[0003]

However, in the wall of the building or the concrete molded product formed by the above-mentioned construction method, the surface of the concrete itself is exposed, which is not beautiful in view of the scenery. Further, although it is possible to prepare the concrete surface by incorporating natural natural stone by a skilled worker, there is a problem that it requires technique, time and labor, the construction efficiency is poor, and the cost is high.

Therefore, an object of the present invention is to finish the concrete surface of a building or the surface of a concrete molded product efficiently and easily without the need for skilled workers to make the appearance beautiful like the rock surface of natural natural stone. To provide a method for constructing a natural stone imitation sheet and a concrete wall surface.

[0005]

In order to achieve the above object, the present invention has the following constitution. That is, the natural stone imitation sheet according to the present invention is formed by adhering a granular material such as stone powder or crystal fragments adhered to the concrete surface to the surface of the flexible sheet-shaped member, and the granular material is concrete. It is characterized in that the sheet-like member can be removed when it adheres to the surface.

Further, since the sheet-shaped member is water-soluble paper having high water-solubility, the sheet-shaped member can be easily removed, so that the working efficiency can be improved.

Further, since the adhesive for adhering the particulate matter to the sheet-like member is a transparent paint such as acrylic, the surface of the granular matter can be glossed and an appearance similar to natural natural stone can be obtained. it can.

Further, by covering the particulate matter adhering to the surface of the sheet-like member with a covering member made of water-soluble paper having high water-solubility, it is possible to prevent the particulate matter from falling off.

The present invention also provides a step of applying fresh concrete or mortar on the surface of an existing structure, and stone powder adhered to the concrete surface on the surface of the sheet-like member before the fresh concrete or mortar hardens. Or, the granular material side of the natural stone imitation sheet formed by adhering the granular material such as crystal fragments is pressed against the surface of the fresh concrete or mortar to be adhered, and the granular material is obtained by hardening the raw concrete or mortar. There is also a method for constructing a concrete wall, which includes a step of fixing an object and a step of removing a sheet-shaped member when the granular material adheres to a concrete surface.

Further, the present invention is a natural stone formed by adhering to the inner surface of a mold for molding a concrete structure, a granular material such as stone powder or crystal fragments adhered to the concrete surface on the surface of the sheet-shaped member. A step of disposing the imitation sheet so that the granular material side is exposed; a step of placing fresh concrete or mortar in the mold to cure it; and a sheet-like member when the granular material adheres to the concrete surface. There is also a method of forming a concrete structure having a step of removing.

[0011]

The natural stone imitation sheet of the present invention is formed by adhering a granular material such as stone powder or crystal fragments on the surface of a sheet-shaped member. For this reason, if this natural stone imitation sheet is used, the granular material can be uniformly and easily fixed by pressing the granular material side against the uncured concrete or mortar surface. Further, by arranging the natural stone imitation sheet of the present invention on the inner surface of the mold, it is possible to easily and uniformly adhere the granular material to the surface of the concrete molded product. Thus, according to the natural stone imitation sheet of the present invention, it is possible to finish the surface of the concrete beautifully like a rock surface of natural natural stone, and at the same time, reduce the labor of the surface finish after placing concrete to improve the construction efficiency. Can be improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a sectional view showing an embodiment of a natural stone imitation sheet according to the present invention. Reference numeral 10 denotes a water-soluble paper, which is a flexible and bendable sheet-shaped member. The water-soluble paper 10 is a material having a high water-solubility, and for example, DISSOLVO (trade name) manufactured by Mishima Paper Co., Ltd. can be used. 12 is a granular material and is made of stone powder or crystal fragments. The particulate matter 12 is attached to the water-soluble paper 10 via an adhesive 14. As the adhesive 14, a transparent paint such as acrylic can be used. With transparent acrylic, the surface of the granular material can be glossed, and an appearance close to that of natural natural stone can be obtained. According to the natural stone imitation sheet having the above structure, when the particulate matter 12 is fixed to the concrete surface, the water-soluble paper 10 is easily dissolved and removed by water (including free water generated from fresh concrete).

FIG. 2 shows another embodiment. Mesh material 16
The granular material 12 is adhered to the silicone sheet-shaped member 20 which is obtained by applying the silicone rubber 18 to the silicone sheet-shaped material 18 and cured. A paint such as transparent acrylic can be used as the adhesive 14. These adhesives 14 can adhere the particulate matter 12 to the surface of the silicone rubber 18, but are easily peeled off from the silicone rubber 18. Therefore, when the granular material 12 is fixed to the concrete surface,
The silicone sheet-shaped member 20 can be easily peeled and removed.

In the embodiment shown in FIG. 3, the granular material 12 adhered to the surface of the water-soluble paper 10 with the adhesive 14 is covered with the covering member 22 made of water-soluble paper having high water solubility. . As described above, by covering the granular material 12 with the covering member 22, the granular material 12 can be prevented from falling off. As the coating member 22, it is suitable to use a water-soluble paper that is thinner than the water-soluble paper 10 that acts as a mount for the particulate matter 12. This is because the granular material 12 is fixed to the concrete surface so that the covering member 22 side is embedded in the concrete inner surface, but at this time, if the thin water-soluble paper is used, the granular material 12 is easily dissolved and the adhesion between the granular material and the concrete is improved. This is because it does not adversely affect the.

Further, in the embodiment of FIG. 4, the mesh material 16
The granular material 12 is adhered to the silicone sheet-shaped member 20 which is obtained by applying the silicone rubber 18 to the cured material, and the granular material 12 is covered with a covering member 22 made of highly water-soluble paper. There is. In addition, in order to surely fix the granular material 12 with the covering member 22, the covering member 22 is attached via the adhesive 14.

Next, details of manufacturing the natural stone imitation sheet will be described including application examples. First, as the sheet-like member, the water-soluble paper 10 or the mesh material 16 described above is used.
It is not limited to those formed by silicone rubber, and Japanese paper and other compatible papers can be used. Also,
The sheet-like member may be any one that can attach the particulate matter 12 in a separable manner, so that not only silicone rubber but also a sheet having a surface with good releasability can be used. Further, the sheet-shaped member is not only formed to have a required size and standard (thickness, etc.) depending on the place of use, but also gathers or unevenness (an uneven shape formed by rubbing or rolling water-soluble paper).
It is also possible to change the shape of the. This allows
Can change the concrete surface.

Further, as the granular material used for imitating natural rock formation or rock surface, base rock fragment, crystal rock powder, or rock forming rock can be used for each imitated rock type. The size of the stone powder or the stone pieces depends on the desired specifications of the concrete surface, but is, for example, a granular shape having a diameter of about 2 to 3 mm. In order to obtain a desired rock surface, the particle size of stone powder or the like may be selected, or various stone powders or stone fragments may be mixed. The types of rocks imitated on concrete surfaces are mainly igneous rocks, metamorphic rocks, and mixed rocks (eg, granite, diorite, gabbros, diabase, etc.). These rock facies, stone powder or stone fragments used for natural stone imitation sheet for imitating rock surface, minerals of the above rocks, phenocrysts or crystal fragments as the main material, slag iron oxide, glass fragments and other hard and durable substances It is also possible to use as an auxiliary material.

As the adhesive for fixing and adhering stone powder, stone fragments, etc. to the water-soluble paper 10 or the silicone sheet-like member 20, the above-mentioned acrylic paint (transparent acrylic), water-soluble starch paint, sugar and glue are used. Gelatinous paint, seaweed, algae refined (agar) adhesive, and other existing effective adhesives or paints can be used. The paint or adhesive is selected and used according to the thickness and size of the sheet-shaped member, the amount of rock powder to be applied, the particle size and the like.

Next, a method of forming the natural stone imitation sheet will be described below in the case where the water-soluble paper 10 is used as a sheet member. First, the adhesive or paint is applied to the paper surface of a water-soluble paper (thickness and other standards have been selected) conforming to desired dimensions and standards. Before the adhesive or paint is dried, the desired natural stone rock surface, stone powder capable of imitating a pattern, crystal fragments, or other mixed material is hand-dispersed or power-mechanically sprinkled. Then, the adhesive or paint is dried, and the stone powder is attached to the paper surface of the water-soluble paper. It should be noted that the amount of stone powder spread, the mixing ratio of stone powder, the shading ratio of the spray ratio, the method of attaching patterns, etc. are not uniform throughout the production, but uniformity is eliminated, and it is based on inconsistency, and it is close to the natural state. Can be formed into a state.

Next, a method of forming a natural stone imitation sheet will be described below in which the silicone sheet-shaped member 20 is used as a sheet-shaped member. First, the existing mesh material 16 such as a cloth or a net is coated with silicone rubber 18 (having a proper amount of a curing agent mixed and agitated in the main component) with a uniform thickness (for example, about 1 to 3 mm) with a brush or the like. In addition, as a kind of cloth or net,
There are vinyl sheets, vinyl nets, nylon nets, glass fiber nets, and wire nets. The silicone rubber is left to cure for a predetermined time. Cut a silicone rubber fabric sheet to the required dimensions. Acrylic paint is applied in a predetermined shape on the cured surface of the silicone rubber, and the stone powder is manually sprinkled or mechanically sprinkled. Dry the acrylic paint to fix stone powder to the silicone rubber surface. By this step, the natural stone imitation sheet shown in FIG. 2 is formed. Further, an adhesive material composed of a water-soluble paint (starch paint) or the like is applied so as to cover the scattered stone powder, and a covering member which is water-soluble paper (for example, DISSOLVO manufactured by Mishima Paper Co., Ltd.) is attached. By adding this step, the natural stone imitation sheet shown in FIG. 4 is formed. This covering member is a covering material to prevent the crushed stone particles sprinkled and adhered from coming off or peeling from the silicone rubber surface during handling and work. Spread.

According to the natural stone imitation sheet formed as described above, its size and shape can be manufactured in any shape, and it is lightweight and easy to carry. In addition, since it is easy to handle, natural natural lithology at the desired site on the concrete surface,
You can easily imitate the natural rock formation. In particular, it can be used without requiring skill, and it is efficient because it can save the labor of the work on site. In addition, since this natural stone imitation sheet can be produced and processed in a factory (indoor), is thin and lightweight, it can be compactly stored, so that there is an advantage that it can be stocked without taking a storage place.

Further, since this natural stone imitation sheet is sheet-shaped, it is thin, has flexibility and elasticity, is rich in toughness, and is easy to handle. Therefore, it can be attached to the surface of the mold to be used. Is. That is, this natural stone imitation sheet can be easily set even on the bottom or side surface where the shape of the inner surface of the mold is box-shaped, trapezoidal, inverted trapezoidal or U-shaped. Also, because of its flexibility, the inner surface of the mold is flat, smooth,
Even grooves, irregularities or undulations can be suitably set along the surface. Note that, as shown in FIG. 5, when the natural stone imitation sheet is to be attached to the inner surface of the side surface of the mold 24 having an inclination or a slope, the existing double-sided adhesive tape 26 or the like can be easily used. Further, in order to mount the natural stone imitation sheet in the mold, it may be temporarily held by a beam-shaped member or temporarily attached to a thin and lightweight plate and then attached to the mold surface. In this way, the natural stone imitation sheet is set and the concrete 28 is placed. In the natural stone imitation sheet shown in FIG. 5, after the concrete hardens to remove the formwork, the water-soluble paper 10 is melted by spraying water and washing off, and a surface close to the rock surface of natural stone can be obtained. Further, according to the silicone sheet-like member 20, the concrete is hardened to dismantle the form, and after the concrete molded product is removed, it can be repeatedly used by peeling it off from the concrete surface.

A construction method using the natural stone imitation sheet according to the present invention will be described. FIG. 6 shows a situation in which the surface of a concrete wall of an existing structure is refurbished, and the construction method is as follows. First, green concrete or mortar 32 is applied on the surface of the existing structure 30. Before the green concrete or mortar 30 hardens,
The granular material side of the natural stone imitation sheet formed by adhering the granular material such as stone powder or crystal fragments adhered to the concrete surface on the surface of the sheet-shaped member is pressed and adhered to the surface of the fresh concrete or mortar. The green concrete or mortar 30 is hardened to fix the particles. The sheet-shaped member is removed when the granular material is fixed to the concrete surface. When the sheet-shaped member is formed of the water-soluble paper 10, it can be dissolved and dispersed by spraying water. Further, in the case of the silicone sheet member 20, it may be peeled off manually. According to the above-mentioned construction method, it is possible to imitate a natural natural stone rock surface in a desired shape on a desired site in advance on the surface of hardened cement / concrete.

Next, a method of forming a concrete structure using the natural stone imitation sheet and the mold according to the present invention will be described below. First, on the inner surface of the mold for molding the concrete structure,
A natural stone imitation sheet formed by adhering a granular material such as stone powder or crystal fragments adhered to the concrete surface on the surface of the sheet-shaped member is arranged so that the granular material side is exposed. Placing ready-mixed concrete or mortar in the mold to cure it. The sheet-like member is removed when the granular material adheres to the concrete surface.

According to the above-described method for forming a concrete structure, it is possible to form the surface of a building into a natural natural rock surface on site using a formwork, and a secondary concrete product is produced in the factory. It is also possible to form. Further, the concrete formwork can be used without any modification as long as it is an existing formwork, without being restricted in its shape, size and material. That is, it is possible to use forms made of wood panel, steel metal, resin, rubber, plaster, etc. according to the constituent materials, and according to the purpose of use, forms and concrete secondary forms produced and assembled at each construction site. It is possible to use a concrete formwork that can be repeatedly used such as a concrete product forming formwork in a product factory. In both cases, the natural stone imitation sheet can be applied without modifying the formwork. Moreover, according to this construction method, regardless of the shape and size of the concrete structure, when the fresh concrete is hit, it can be attached to the formwork. Further, the natural stone imitation sheet can be easily formed in conformity with the mold, and the workability can be improved.

[0026] According to the present invention, it is suitable for a site where an existing concrete surface is to be renovated or a construction site where a surface of a concrete structure is formed by a formwork, and a natural rock surface of a desired natural stone can be easily and economically formed. it can. In addition, the surface of secondary products currently manufactured and marketed in concrete secondary product factories (such as Machi block, earth retaining walls, slope blocks for rivers, road blocks, drainage blocks, etc.) are naturally attached to the surface. It is easy on the eyes and is environmentally and aesthetically friendly, and it has natural stone patterns and rock surfaces that you will never get tired of.

Further, according to the present invention, the quality of the concrete surface can be made uniform, and the quality of the wall surface of the building can be improved. Furthermore, compared to general construction methods,
The process of finishing slopes by skilled workers can be omitted and the process can be performed relatively easily, so the finishing process can be shortened and the work efficiency is greatly improved. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

[0028]

EFFECTS OF THE INVENTION According to the natural stone imitation sheet of the present invention, the surface of the sheet-like member is formed by adhering granular materials such as stone powder or crystal fragments, and the uncured concrete or mortar surface is formed. By pressing the granular material side,
The granular material can be easily fixed, and by disposing the granular material on the inner surface of the mold, the granular material can be easily fixed to the surface of the concrete molded product. Therefore, according to the present invention, the concrete surface of a building or the surface of a concrete molded product can be finished efficiently and easily without the need for skilled workers to make the appearance beautiful like the rock surface of natural natural stone. It works.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a natural stone imitation sheet according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the natural stone imitation sheet according to the present invention.

3 is a cross-sectional view showing an embodiment in which a covering member is provided in the embodiment of FIG.

4 is a sectional view showing an embodiment in which a covering member is provided in the embodiment of FIG.

FIG. 5 is a cross-sectional view showing a usage state of the natural stone imitation sheet according to the present invention.

FIG. 6 is a cross-sectional view showing a state where the natural stone imitation sheet according to the present invention is used in an existing structure.

[Explanation of symbols]

 10 Water-soluble paper 12 Granular material 14 Adhesive 16 Mesh material 18 Silicone rubber 20 Silicone sheet-like member 22 Covering member

Claims (6)

[Claims] 1. A flexible sheet-shaped member is formed by adhering a granular material such as stone powder or crystal fragments adhered to a concrete surface onto the surface of the flexible member, and when the granular material adheres to the concrete surface, A natural stone imitation sheet characterized in that the sheet-shaped member is removable. 2. The natural stone imitation sheet according to claim 1, wherein the sheet-shaped member is water-soluble paper having high water solubility. 3. The natural stone imitation sheet according to claim 1, wherein the adhesive for adhering the particulate matter to the sheet-shaped member is a transparent paint such as acrylic. 4. The natural stone imitation sheet according to claim 1, wherein the granular material attached to the surface of the sheet-like member is covered with a covering member made of water-soluble paper having high water-solubility. 5. A step of coating fresh concrete or mortar on the surface of an existing structure, and stone powder or crystal fragments adhered to the concrete surface on the surface of the sheet-shaped member before hardening of the fresh concrete or mortar. The step of adhering the granular material side of the natural stone imitation sheet formed by adhering the granular material such as to the surface of the fresh concrete or mortar, and hardening the raw concrete or mortar to fix the granular material. A method for constructing a concrete wall, comprising: a step; and a step of removing the sheet-shaped member when the particulate matter adheres to the concrete surface. 6. A natural stone imitation sheet formed by adhering a granular material such as stone powder or crystal fragments adhered to the concrete surface on the surface of a sheet-shaped member to the inner surface of a mold for molding a concrete structure, A step of arranging so that the granular material side is exposed, a step of placing fresh concrete or mortar in the mold to cure it, and a step of removing the sheet-shaped member when the granular material adheres to the concrete surface A method for forming a concrete structure having: