JPH11928A - Civil engineering-construction member, and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a civil engineering-construction member which has a non-smooth flat surface, or has a partial uneven surface and/or steps on the surface, and of which the gloss and the surface smoothness have an appearance of a natural stone, etc., by a method wherein a reactant hardening resin applied on a base material, and at the point wherein the resin is unhardened, a die member is press-mounted from its top, and the die member is removed after a reaction-hardening. SOLUTION: A base material 2 of a concrete plate, a slate plate, etc., is used, and a normal temperature reactant hardening resin 3 such as an epoxy resin in which an aggregate is mixed, a urethane resin, is coated on the base material 2. At a point wherein the resin 3 is not hardened yet, a die member 4 on which characters and figures, etc., are engraved, is placed from the top in such a manner that air may not enter, and the die member 4 is pressed. Under this state, after the resin 3 is hardened, the die member 4 is removed. By this method, the surface can be made smooth, and a chic and beautiful formed article such as an artificial stone on which characters and figures, etc., are embossed, can be obtained, and also, by mixing one kind or a plurality of kinds of appropriate pigments and coloring materials, an appearance which is close to natural stones can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for civil engineering and construction. Civil engineering building materials are walls, floors, ceilings,
It is used as a surface member such as a pillar or a structural member.

[0002]

2. Description of the Related Art The exterior wall of a building or the like is the appearance itself of the building, and should determine the aesthetics of the building. Both the designer and the owner of the building place great emphasis on the decorativeness and aesthetics. Therefore, the surface of the concrete is not simply subjected to waterproofing only, but surface finishing including decorative elements is always performed. As a conventional method for finishing an outer wall, there are a spraying material application, a tile covering, a natural stone covering, a brick covering and the like.

[0003] Tiling, natural stone covering, brick covering, and the like are methods that have been practiced for a long time, and have excellent aesthetics and weather resistance. Therefore, these are still used at present. Furthermore, the method of spraying material application,
The above is devised because it is expensive and time-consuming, and applies resin mixed with aggregate to the wall surface. This has the advantage that it is inexpensive and very easy to construct.

[0004] In recent years, as a method of building a concrete building, a method of forming a formwork on site and pouring concrete into the formwork and curing it is rare.
A C plate and a PC plate are used. The ALC board refers to a lightweight cellular concrete panel steam-cured at high temperature and high pressure. The PC board is a panel made of prestressed concrete in which steel wire is tensioned and concrete is driven in advance. These panels are inserted between steel frames or the like as walls, outer walls, or the like to form a structural member, and the gap therebetween is filled on site.

[0005]

However, such an outer wall material has the following disadvantages. A method of sticking a natural stone thinly (usually about 2 cm) into a plate shape rather than a tile or a brick is preferred. In particular, marble, granite and the like are very excellent in beauty and are the most popular. However, such natural stones are expensive, which greatly increases the cost. For this reason, a method similar to a natural stone has been devised by a spraying method using a spraying material, but there is a marked difference from the natural thing in its gloss and surface smoothness, etc. Absent.

When the ALC plate or the like is used as described above, the construction itself has the effect of shortening the construction period, but the decoration of the surface is spray-finished or tiled similarly to the cast-in-place method. It is necessary to perform a finishing decoration process such as

The inventor of the present invention has carried out various experiments, such as polishing the surface after spraying and curing a spraying material, and coating with a transparent resin, but none of them has a satisfactory gloss. In other words, after the organic spraying material has hardened, it is difficult to process the surface according to the image itself.

[0008] However, while a simple flat plate-like body can be easily manufactured by hand or with a simple apparatus, it is almost impossible to polish after curing with a resin or the like as described above. The appearance of the cut natural stone could not be revealed.

[0009]

In view of the above situation, the present inventors have completed the production method of the present invention, and the feature of the present invention is that a reaction-curable resin is formed on a substrate. A method of applying and pressing the mold member from above at the time when the resin is not cured, and removing the mold member after the reaction and curing, wherein the mold member has a non-smooth flat surface. At one point. In another aspect, a reaction curable resin is applied on a substrate, and a mold member is pressed and placed from above,
A method for removing a mold member after reaction-hardening, wherein the mold member has a partially uneven surface and / or a step on a non-smooth flat surface.

The above-mentioned substrate and mold member can be used in the reverse order. That is, the application of the reactive curable resin is performed on the mold member, and the pressing and mounting from above is performed on the base material. If the mold member is removed after the reaction and curing, the molded cured resin is integrated with the substrate and remains.

The shape of the member for civil engineering and construction according to the present invention may be any shape such as a plate, a column, an arc, or any other curved plate, and can be freely determined.

Here, the base material may be any material such as a concrete plate, a slate plate, a metal plate, a plastic plate, and a foamed plastic plate. The base material is not limited to a single layer, and may be a base material provided with a heat insulating layer, an elastic layer, a waterproof layer, and the like. Rubber, foamed plastic, or the like can be used as the heat insulating layer or the elastic layer. In addition, an organic or inorganic fiber sheet, a reinforced plastic sheet, or the like can be used as the base material.

The reaction-curable resin is a kind of plastic that is cured by reacting with one kind of plastic, and is used as a concept including a monomer and a prepolymer before polymerization. One-pack type or two-pack type may be used. Usually, a curing agent is mixed, and the temperature rises slightly (about 80 ° C.) at the time of curing, and many of them react and cure. Further, the polymerization may be started by light, ultraviolet light, electron beam or the like.

What satisfies this requirement is a room-temperature reactive curable resin, for example, a room-temperature radical reactive resin such as an epoxy resin, a urethane resin, a methyl methacrylate resin, or a vinyl ester resin. A room-temperature radical-reactive resin is preferred because it cures quickly, and among them, an acrylate resin such as methyl methacrylate having excellent weather resistance is particularly preferred. High temperature reactive resin systems are not preferred. Resins that react at room temperature include a curing catalyst (eg, benzoyl peroxide) and a curing accelerator (eg, metal salts of organic acids,
Grade amines), and their (un) reacted products, decomposed products, and the like usually remain at 1% or more in the cured resin.

Naturally, conventional spraying materials can be used as the resin used in the present invention. However, the resin of the present invention needs to be cured or solidified in a state of being sandwiched between the base material and the mold member. Those (emulsion type etc.) are difficult to use. This is because the solvent and water of the emulsion do not volatilize because the upper and lower portions are covered.

A problem in actual work is the releasability between the cured resin and the mold member. Although peelability may be effective in some cases, a hard coat on the mold member is preferred in terms of smoothness of the cured resin.

[0017] Pigments or dyes are usually mixed into the monomer or resin to produce various colors. In addition, it is free to add additives used for ordinary spraying materials.

The most important point for obtaining the natural stone appearance is to mix the resin with the aggregate. Aggregate is natural stone,
It is a ceramic or the like and contains many oxides and hydroxides of metals. The size varies from powder to several mm. By mixing the aggregates of different colors, it becomes granite-like or marble-like. Further, luminous minerals or luminous ceramics may be used for aggregates or crushed aggregates.

The mold member is used to impart various shape properties to the surface of the resin when the resin is cured, and various materials such as plastic, metal, and glass can be used. Although the mold member has various shapes, a pattern having a smooth surface and an uneven surface, a pattern having a level difference, and a combination thereof have already been filed in the previous application (Japanese Patent Application No. Hei 8-3).
As described above, the present proposal firstly relates to a method of manufacturing a member for civil engineering and construction using a mold member that gives a hardened resin surface a dull and plain surface mechanism. That is, a method of removing a mold member after curing, characterized in that the mold member is a non-smooth flat surface, but the surface portion of the civil engineering building member has an uneven surface and / or a step. May be provided.

A smooth surface is glossy like a mirror surface, and an image of a nearby object is formed (reflected) on the surface. On a non-smooth flat surface, the shadow of the object is reflected but no image is formed.
On a mirror surface, the irregularities on the surface are smaller than the wavelength of visible light, and reflection of light on the surface is likely to occur regularly. On a non-smooth flat surface, the surface irregularities reflect light larger than the wavelength of visible light. The irregularities on the surface are not so large as to be visible (about 0.1 to 10 microns). Examples of the material exhibiting such a surface include frosted glass, woodfree paper, ceramic, foamed plastic, etched metal surface, and synthetic resin plate containing fine powder.

According to the present invention, a base material is placed and a resin is applied thereon, and the mold member is pressed or vice versa.
It is optional whether a resin is applied thereon and the substrate is pressed. The pressing at this time may be merely by gravity.

Before applying the resin to the substrate (or vice versa), a thin coating may be applied to the surface of the substrate. This may be an ordinary paint, as long as it can prevent transparent penetration to some extent. Needless to say, such a coating material is unnecessary when the material does not penetrate into the base material or the degree of penetration is small.

The main reason why the cured resin has an appearance having a natural stone-like luster is because the mixed aggregate has a bias toward the surface due to gravity and the cured resin forms a flat surface.

Further, if characters, figures, and the like are engraved on the mold member, an imitation stone in which the characters and figures are embossed is completed.
It's like carving a stone.

When the resin cures, it shrinks to some extent, but it is also useful to provide a cushioning material between the resin and the substrate to absorb the contraction. This is preferably a resilient adhesive such as butyl rubber. In particular, in the case of cellular concrete such as ALC and the like, there is a disadvantage that it is brittle, so such a treatment is effective. In addition, as a reinforcing material mainly for preventing cracks when mixing resin and aggregate, glass, polyester, susa-like short fibers made of acrylic are mixed, or glass-based or polyester-based immediately after applying a mixture of resin and aggregate. Placing a reinforcing cloth is also effective.

The shrinkage absorbing material may be any material other than those described above. In short, any material having good adhesiveness and elasticity capable of absorbing shrinkage may be used.

[0027]

1 to 3 are process diagrams showing a method for manufacturing a civil engineering building member 1 according to the present invention. FIG. 1 shows a state in which a resin is applied to a base material. As a base material, a concrete plate 2 is used, and as a resin, MMA3 mixed with an aggregate is used. In this state, since the resin 3 has not been cured yet, the mold member 4 is placed thereon so that air does not enter.
Press. If this is difficult, it is better to place the mold member first and apply resin on it.

After the resin is cured in the state shown in FIG.
Remove. This is the state shown in FIG. 3, which is completed. In this example, since the mold member is molded in an Edo-cutting style, a surrounding smooth portion 5 and a central uneven portion 6 are formed.

[0029]

The member for civil engineering and construction according to the present invention has the following significant advantages. The surface can be flattened and calm and beautiful. In addition, by mixing one or more kinds of appropriate pigments and coloring materials, a beautiful sensation similar to natural stone is exhibited. Since the surface decoration of the members themselves is performed at the factory, the construction period can be significantly reduced. Since it is a resin, it does not crack like stone and has shock absorption. Artificial colors and patterns can be easily created. The surface is flat and non-slip, and dirt is hard to adhere.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where a resin is applied to a base material.

FIG. 2 is a sectional view showing a state where a mold member is pressed.

FIG. 3 is a sectional view showing a state where a mold member is removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Civil engineering building member 2 Base material 3 Resin 4 Mold member 5 Smooth part 6 Uneven part 7 Non-smooth flat surface

Claims (4)

[Claims] 1. A method for applying a reaction-curable resin on a substrate, pressing and mounting a mold member from above, and removing the mold member after reaction-curing, wherein the mold member has a surface portion. A non-smooth flat surface having or not having an uneven surface and / or a step. 2. A method for applying a reaction-curable resin onto a mold member, pressing and mounting a substrate from above, and removing the mold member after reaction-curing, wherein the mold member has a surface portion. A non-smooth flat surface having or not having an uneven surface and / or a step. 3. The member for civil engineering construction according to claim 1, wherein the reaction-curable resin is a room-temperature reaction-curable resin. 4. The reaction curable resin is a room temperature radical reaction curable resin, and the cured resin contains a decomposition product and / or a reaction product of a room temperature radical reaction catalyst and a reaction accelerator. Item 3. A member for civil engineering and construction according to item 3.