JP2003033904A - Joint filler and method for tile work, and manufacturing method for concrete panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by preventing a tile surface from being soiled with concrete mortar at tiling on a job site or at the manufacture of a concrete panel integrated with a tile. SOLUTION: A joint filler 1 is formed of two layers, that is, an elastic material 1a, such as expanded polyethylene, urethane or rubber, and a retaining material 1b for a cement setting retarder, such as a nonwoven fabric laminated on one side of the elastic material 1a. The tile 10 is fixed by means of concrete 11 after being fitted between joints in such a manner that the retaining material 1b is located on the surface side of the tile 10. Under such a state as to be covered with the elastic material 1a, the concrete 11 and alkaline water leaching from the concrete 11 are prevented from leaking out to the surface side of the tile 10. The retaining material 1b having the cement setting retarder is arranged outside the elastic material 1a, so that the concrete 11 can be prevented from being fixed to the surface and side surface of the tile 10, even in the case of the seepage of the concrete 11 from between the elastic material 1a and the side surface of the tile 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint material for tile construction used for outer walls of building structures and curtain walls.
The present invention also relates to a tile construction method and a concrete panel production method using this joint material.

[0002]

2. Description of the Related Art Conventionally, as a method of laying tiles on a wall surface or floor surface of a building, a method of sticking tiles one by one to a mortar or concrete surface has been adopted. In addition, recently, for the purpose of improving work efficiency, finishing accuracy, etc., many methods have been adopted to manufacture a so-called precast concrete panel in which tiles are pasted and integrated in advance, and this panel is fixed to the wall surface or floor surface. Has been done. In the former case, a technique for orderly adhering tiles is required, and at the same time, the base mortar stains the tile surface and solidifies it so that it cannot be removed.

The latter method for manufacturing a concrete panel in which tiles are integrated is as follows: (1) The tile surface is arranged upward and arranged in a plane at a predetermined interval, and a joint material is laid in the space between the tiles (2). Adhesive sheets (backup material) are attached to the upper surface of the tile and the joint material to integrate them, and the integrated material is inverted and placed on the sheet with the sheet as the lower surface in the formwork. (3) Formwork In general, there is a method of pouring and curing concrete inside, and (4) a method in which concrete is solidified and then demolded to form a panel. Also in this method, uncured concrete is infiltrated and hardened into the contact surface between the tile surface and the bottom surface of the formwork or the edge portion of the tile during the steps from concrete pouring to curing, and this unnecessary concrete adheres after demolding. Is very difficult and requires a lot of time and effort, and the joint material does not come off together with the adhesive sheet, leaving some of the adhesive sheet on the joints of concrete. Is also pointed out.

Various proposals have been made to solve the problems associated with the latter construction method. For example, as a tile surface treatment technique, the tile surface can be peeled by adding a polymer absorbent or a surfactant. A method of coating with a coating agent (JP-A-7-137017), or a method of coating the tile surface with a peelable coating agent to which a water-absorbing organic substance or a water-absorbing inorganic substance is added (JP-A-7-1313).
No. 7018), a method of applying a mixture of an alkali-swelling concrete non-hardening agent and an adhesive or an adhesive to the surface of a mold, and adhering or adhering the surface side of the tile to the applied surface (JP-A-7-68517). Japanese Patent Laid-Open No. 7-112414), a method of coating the surface of the tile with a water-insoluble but alkali-soluble polymer emulsion, and washing the tile surface with an alkaline solution after demolding (JP-A-7-112414). .

In addition, a method of using a cement setting retarder on the surface of a foamed joint material used as a joint material (Japanese Patent Laid-Open No. 6-58242)
-220977) or a method of covering the tile surface and the upper surface of the joint material with a wide adhesive tape and integrally mounting them on a formwork, wherein the adhesive agent of the adhesive tape contains a polymer water-absorbing agent. Method (JP-A-6-156)
No. 21) is disclosed.

[0006]

However, none of the above-mentioned techniques are sufficient, and although the adhesion of concrete to the tile surface can be prevented in particular, the adhesion to the corners and side surfaces of the tile can be ensured. It was difficult to prevent. Further, in the conventional technology, it takes a lot of time to peel off the joint material after sticking from the tile surface, and it is difficult to remove the concrete adhering to the tile surface after the mold is removed when manufacturing the tile-integrated concrete panel. There is a problem that it takes a long time, and the tile surface is soiled or damaged. Therefore, there has been a demand for a simple and economical method for solving such problems. Furthermore, JP-A-6-22
As described in Japanese Patent No. 0977, even in the case where the cement setting retarder is provided on the surface of the joint material, since the resin material such as polyethylene foam is used as the joint material, the holding power of the cement setting retarder However, there was a drawback that a sufficient cement setting retarder could not be prepared in the joint portion and the concrete adhesion preventing function was low.

The present invention has been proposed in order to solve the above-mentioned problems of the prior art, and it is possible to surely hold the cement setting retarder between the joints of the tile, It is an object of the present invention to provide a joint material for a tile, which can effectively prevent concrete from adhering to the corners and side surfaces of the tile, not to mention the surface.

Another object of the present invention is to provide a tile construction method which can easily realize a makeup called "washout" by using the above-mentioned joint material. That is, the "washing out" method is a method of forming a concavo-convex pattern on the surface of the joint by removing it with water and a brush without solidifying the concrete in the joint portion of the tile. Such a "washout" method can be easily realized by using the joint material.

Still another object of the present invention is to provide a method for producing a concrete panel which prevents the adhesion of concrete to the corners and sides of the tile as described above and which has a "washout" makeup on the joints of the tile. Is to provide.

[0010]

In order to achieve the above object, the invention of claim 1 laminates a drug holding material such as a non-woven fabric on the surface of an elastic material made of foamed resin such as foamed polyethylene or urethane. And a cement setting retarder is held in the drug holding material portion of the joint material.

In the invention of claim 1 having such a structure, the jointing agent is foamed when the elastic material is inserted between the joints of the tile so that the elastic material is at the back of the joint, that is, the concrete side. The elastic material made of resin is fitted between the side surfaces of the adjacent tiles in a compressed state, so that the joint material and the side surface of the tile come into close contact with each other. As a result, it is possible to prevent the concrete from leaking from the gap between the jointing agent and the tile to stain the tile surface or adhere to the side surface of the tile. In addition, since the cement setting retarder is held in the chemical holding material such as non-woven fabric, this cement retarding agent delays the setting of the concrete in the joint agent part, so that the concrete leaks from the gap between the elastic material and the tile side surface. Even if concrete adheres to the surface or side of the tile, it can be easily washed off with water.

According to a second aspect of the present invention, a drug holding material such as a non-woven fabric is laminated on the surface of an elastic material made of foamed resin such as foamed polyethylene or urethane, and the cement setting retarder is held in the drug holding material portion. Fix the tile to the concrete in a state where the joint agent is installed between the joints of the tile so that the side of the chemical holding material is on the concrete side, and then remove the joint material from between the tiles after the tile and the concrete are fixed. It is characterized in that the joint portion of the tile is washed out.

According to the second aspect of the present invention, while the tile is fixed to the concrete, the cement setting retarder is enclosed between the joints of the tile, which delays the setting of the concrete in the joint portion. . Therefore, if the joint material is removed while the tile is firmly attached, the concrete surface that was in contact with the cement setting retarder of the joint will not be completely set.
A "wash-out" makeup can be applied by washing out this portion with a brush and water.

According to a third aspect of the present invention, a drug holding material such as a non-woven fabric is laminated on the surface of an elastic material made of foamed resin such as foamed polyethylene or urethane, and a cement setting retarder is held in the drug holding material portion. Place the joint agent in the form with the back side of the tile facing upward, with the back side of the tile facing upward, with the side of the chemical holding material facing the backup material side, and place the concrete from the back side of this tile. Filling and cementing the concrete to bond the tile to the concrete to form a panel, and after the tile and concrete are bonded, remove the panel from the formwork to remove the joint material from between the tiles and then It is characterized in that it does not solidify the slag that has spun on the edge and the tile surface.

According to the third aspect of the present invention, concrete leaks from the gap between the joint material and the tile and delays the condensation of the slag adhered to the tile surface and the slag adhered to the tile side surface (small edge), and the tile surface and the side surface. Even if concrete adheres to, it can be easily washed off with water.

The invention of claim 4 is the joint material for tile construction according to claim 1, characterized in that the chemical-retaining material portion contains a polymer absorbent. The invention of claim 5 is
The method for producing a concrete panel according to claim 2 or 3, wherein the drug holding material portion contains a polymer absorbent. In the inventions of claims 4 and 5, since the polymer absorbent in the medicine holding material portion between the tiles absorbs water and swells, leakage and drying of slag are prevented, and washing can be easily performed. it can. Especially when the side of the tile has irregularities,
Since the polymer absorbent swells and adheres to the irregularities, it is possible to reliably prevent spillage and drying.

According to a sixth aspect of the present invention, in the method for producing a concrete panel according to any one of the second, third and fifth aspects, the joint material is mounted between the tile and the formwork. Is characterized by. According to the sixth aspect of the present invention, since the leak and the drying of the slag in the gap between the mold and the tile are prevented, the surroundings of the concrete panel after the mold releasing can be easily washed away.

BEST MODE FOR CARRYING OUT THE INVENTION [1. First Embodiment] [1-1. Configuration: Claim 1] Hereinafter, a first embodiment of the present invention will be specifically described with reference to the drawings. First, FIG. 1 is a sectional view of a joint material of the present embodiment, and FIG. 2 is a side view thereof. As shown in these drawings, the joint material 1 of the present embodiment is shown.
Is composed of two layers of an elastic material 1a such as foamed polyethylene, urethane, or rubber, and a cement setting retarder holding material 1b such as a nonwoven fabric laminated on one surface thereof. The joint material 1 is, for example, in the form of a narrow string cut according to the width of joints formed between tiles. In this case, the width of the joint material is preferably slightly wider than the width of the joint into which the joint material is fitted.

Here, the elastic material 1a is preferably one having a waterproof function (sealing performance) so that concrete and its liquid do not leak out from between the joints. On the other hand, the holding material 1b for the cement setting retarder is a cloth, a dry or wet method fibrous non-woven fabric, an open-cell or closed-cell foamed plastic sheet, so as to hold the cement setting retarder therein. Porous materials such as paper and cardboard are preferred. Further, a plastic film or a thin plastic sheet having closed cells can be laminated on the surface of the holding material 1b.

Further, on the front surface or the back surface of the joint material 1, that is, on the surface of the holding material 1b side or the elastic material 1a side, the joint material 1 is a joint portion of a tile or a sheet for positioning the tile.
It is also possible to provide an adhesive sheet for positioning.

As the cement setting retarder used in the present invention, all known retarders can be used. For example, oxycarboxylate type retarders such as gluconate, citrate and tartrate, aminophosphonate type retarders such as aminotrimethylene phosphonate, and lignin sulfonate type water reducing agents. Examples thereof include those having no action and silicofluorides. These cement setting retarders are applied to the site of the holding material 1b. When the cement setting retarder is applied to the site of the holding material 1b, the setting retarder is made into an aqueous solution and impregnated into the holding material 1b and then dried, or after being applied to the surface and then dried. To do.

Further, as the cement setting retarder, it is also possible to use powders of unsaturated polyester resin. The unsaturated polyester resin used in the present invention is obtained by a polycondensation reaction of a dibasic acid containing an unsaturated dibasic acid and a dihydric alcohol, and a polymer having an ester bond and an unsaturated bond in the main chain is used as an organic polymer. An oxide is used as a polymerization initiator and is cured at room temperature or by heating in the presence of a polymerizable vinyl monomer, if necessary. Specific examples of the unsaturated dibasic acid include maleic anhydride, fumaric acid, and itaconic acid. Other dibasic acids include phthalic anhydride and
Examples thereof include isophthalic acid, terephthalic acid and succinic acid. Examples of the dihydric alcohol include ethylene glycol, propylene glycol, diethylene glycol and dipropylene glycol. Among these, unsaturated polyester resins composed of a combination of maleic anhydride and ethylene glycol are preferable.

In the present invention, the unsaturated polyester resin has a particle size of 10 to 150 μm, preferably 20 to 100 μm.
As the granular material of m, it is dispersed in the holding material 1b. As a means for this dispersion, the unsaturated polyester resin can be applied in a state of being dispersed in water or another solvent. In this case, if the particle size is less than 10 μm, it is difficult to manufacture and easily aggregates, and it is inconvenient to handle, and it is difficult to contact with alkaline water leached from uncured concrete, which is not effective, while it exceeds 150 μm. Therefore, it is difficult to disperse uniformly in the holding material 1b, which is not preferable.

[2-1. Effect] [2-1-1. Example of use when washing out ... Claim 2] Next,
A case where the joint material of the present embodiment is used in the "washout" method will be described with reference to Figs. 3 to 5. The "washing out" method using this joint material is applicable to the overall construction of tiles, including the case where the tiles are fixed to the wall surface of the building, but in Figs. In the case of manufacturing the attached concrete panel 20, a case of applying "washout" makeup to the joint portion of the tile will be described as an example.

That is, in this embodiment, the tile-integrated concrete panel 20 is produced in the order of FIGS. 3 to 5. First, as shown in FIG. 3, a total of 20 tiles 10 are arranged in a matrix of 4 rows × 5 rows, with the surface of the tile 10 facing upward. The adhesive sheet 12 is attached to the upper surface of the joint material 1 to form a unit. In this case, the holding material 1b containing the cement setting retarder is arranged on the back surface side of the tile 10.

Next, as shown in FIG. 4, the unit is turned over so that the adhesive sheet 12 is the lower surface and the back surface of the tile 10 is the upper surface.
Concrete 11 is placed in 3. By doing so, the surface of the concrete 11 and the cement setting retarder of the holding material 1b come into contact with each other at the bottom of the joint, and only that portion of the concrete 11 is different from the concrete of the other portions constituting the panel body. Therefore, the setting will be delayed. In this way, the concrete 10 constituting the panel body is cured and solidified, and after the panel and the tiles on the surface thereof are firmly fixed, the surrounding formwork is removed, and further the entire panel as shown in FIG. Is reversed and the adhesive sheet 12 and the joint material 1 are removed.

After that, the joint portion from which the joint material 1 has been removed is washed with a brush and water to wash out the surface of concrete which is not completely solidified at the bottom of the joint with the cement setting retarder in the holding material 1b. , Fig. 5
The tile-integrated concrete panel 20 as described above is completed.

[2-1-2. Example of use other than when washing out ...
[Claim 3] The joint material 1 according to the present embodiment as described above can be used for general protection of various tiled surfaces such as outer walls of building structures, curtain walls, and floor surfaces, in addition to the above-mentioned washing treatment. It is effectively used for tile construction, production of tile precast concrete panels, or protection of tile surface after construction.

That is, FIGS. 6 and 7 show an example thereof, in which the holding material 1b holding the cement set retarder is placed on the surface side of the tile 10 and fitted in the joints. After that, the tile 10 is fixed with concrete 11. In this case, joint material 1
Since the elastic material 1a of 1 will be fitted into the joint in a compressed state between the left and right tiles 11, the concrete 11 located on the back side of the tile will be covered with the compressed elastic material 1a. It will be in a state. As a result, the concrete and the alkaline water leached from the
Is prevented from leaking to the surface side.

Further, since the holding material 1b having the cement setting retarder is arranged outside the elastic material 1a,
Even if there is concrete that oozes out between the elastic material 1a and the side surface of the tile, it does not adhere to the surface or side surface of the tile. After the tile 10 adheres to the concrete 11, the joint material 1 is removed from between the joints. The dirt on the tile surface can be easily removed by removing and washing with water.

[2. Second Embodiment] [2-1. Structure ... Claim 4] Another embodiment of the present invention will be described. That is, the joint material 1 of the present embodiment is prepared by mixing the cement setting retarder and the polymer absorbent to obtain the holding material 1
It is held in b. As the polymer water-absorbing agent, all known ones can be used, and a single type may be used or a plurality of types may be arbitrarily mixed. For example,
Polyacrylate type, isobutylene / maleate type,
Examples thereof include starch / polyacrylate type and polyvinyl acetate / polyacrylate type. The material, structure, etc. of the holding material 1b and other portions are the same as those in the above-described first embodiment.

[2-2. Function and effect ... Claims 5 and 6] The joint material of the present embodiment can be used in the same manner as in the above-mentioned embodiments. In addition, it can be used as described below. That is, as shown in FIG. 8, the joint material 1 is also attached to the inner periphery of the mold 13. The back surface of the tile 10 is the upper surface, and the joint material 1 is arranged between them.
Together with it, it is spread in the formwork 13. As a result, the joint filler 1 is interposed not only between the tiles 10 but also between the tiles 10 and the mold 13. Then, the concrete 11 is placed in the form 13. The subsequent procedure is the same as that of the above-described first embodiment. In addition, such a usage example may be performed using the joint material 1 described in the first embodiment.

According to the present embodiment as described above, since the polymer absorbent absorbs water and swells when the concrete 11 is cast, leakage and drying of the slag are prevented. Therefore, after removing the mold, it is not necessary to remove the hardened slag with the hand grinder, and the rinsing can be easily performed. In particular, in combination with a cement setting retarder,
Solidification of slag can be reliably prevented. Further, even if the side surface of the tile 10 has irregularities, the polymer absorbent swells and adheres to the irregularities, so leakage and drying of slag can be reliably prevented. Further, since the joint material 1 is also arranged between the formwork 13 and the tiles 10, the outer periphery of the tiles 10 in the tile-integrated concrete panel 20 is prevented from being soiled, and the work of removing the slag is not required.

[0033]

As described above, according to the present invention, since the holding material having the cement setting retarder is provided on one surface of the joint material, the concrete is placed in the formwork during the tile construction or the tile integrated concrete panel production. Even if excess concrete mortar wraps around the surface of the tile and becomes dirty in the process of placing, the alkaline water leached from the concrete mortar effectively contacts the cement setting retarder to harden the concrete mortar on the tile surface. Can be suppressed.
Therefore, it is extremely effective in that it is easy to wash the slag that has leached on the tile surface or the small edge portion, the manufacturing efficiency of the panel is improved, and a beautiful tile surface can be obtained without damaging the tile surface. It becomes a good adhesive sheet.

Further, according to the present invention, the joint material is formed by the combination of the elastic material and the holding material, so that the contact between the concrete and the corner or side surface of the tile is prevented by the elastic material, and the cement setting of the holding material is performed. Even if the concrete leaks out, the retarder prevents the concrete from hardening. Therefore, even if the cement joint retarder is applied to the joint material, the stain-proofing performance of the tile is excellent.

In the joint material of the present invention, by mounting the cement setting retarder on the concrete side, it is possible to "wash out" the bottom of the joint, and in that case, the elastic material on the tile surface side is used. It is possible to prevent leakage of concrete that does not harden.

Further, in the joint material of the present invention, since the polymer absorbent in the drug holding material portion absorbs water and swells,
It is possible to prevent leakage and drying of the roe.

Further, according to the present invention, the leakage and the drying of the slag in the gap between the mold and the tile are prevented, so that the surroundings of the concrete panel after the mold releasing can be easily washed away.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing the constitution of a joint material of the present invention.

FIG. 2 is a schematic side view showing the constitution of the joint material of the present invention.

FIG. 3 is a cross-sectional view of a unit in which the joint material of the present invention is used for washing out, and an adhesive sheet is attached to the tile and the joint material.

FIG. 4 is a cross-sectional view showing a state in which concrete is placed on the unit of FIG. 3 which is inverted.

FIG. 5 is a cross-sectional view of a tile-integrated concrete panel completed by a washing process.

FIG. 6 is a cross-sectional view of a unit in which the joint material of the present invention is used for the purpose of preventing adhesion of slag to the tile, and an adhesive sheet is attached to the tile and the joint material.

FIG. 7 is a cross-sectional view showing a state in which concrete is placed on the unit of FIG. 6 in an inverted arrangement.

FIG. 8 is a cross-sectional view showing a state in which concrete is poured by using the joint material of the present invention for the purpose of preventing adhesion of slag to the outer periphery of tile.

[Explanation of symbols]

1 ... Joint material 1a ... Elastic material 1b ... Retaining material for cement setting retarder 10 ... tiles 11 ... Concrete 12 ... Adhesive sheet 13 ... Formwork 20 ... Concrete panel

Claims (6)

[Claims] 1. A joint material is formed by laminating a chemical-retaining material such as a non-woven fabric on the surface of an elastic material made of foamed resin such as foamed polyethylene or urethane, and a cement setting retardation is formed in the medicine-retaining material portion of the joint material. A joint material for tile construction, which retains the agent. 2. A jointing agent comprising a drug holding material such as a non-woven fabric laminated on the surface of an elastic material made of foamed resin such as foamed polyethylene or urethane, and a cement setting retarder held in the drug holding material portion. The tile is fixed to the concrete in a state where it is mounted between the joints of the tile with the side of the chemical holding material facing the concrete side, and after the tile and the concrete are fixed, the jointing material is removed from between the tiles, and the joint portion of the tile A tile construction method characterized in that the tiles are washed out. 3. A jointing agent comprising a drug holding material such as a non-woven fabric laminated on the surface of an elastic material made of foamed resin such as foamed polyethylene or urethane, and a cement setting retarder held in the drug holding material portion. With the chemical-holding material side facing the back-up material side, the tiles are installed between the joints, and the tiles are placed in the formwork with the back of the tiles facing upwards. The tile is adhered to the concrete by condensing to form a panel, and after the tile and the concrete are adhered, the panel is removed from the formwork to remove the jointing material from between the tiles, and then the tile edge and the tile surface. A method for producing a concrete panel, which is characterized in that solidified slag that does not turn into solid is not solidified. 4. The joint material for tile construction according to claim 1, wherein the medicine holding material portion contains a polymer absorbent. 5. The method for producing a concrete panel according to claim 2, wherein the drug holding material portion contains a polymer absorbent. 6. The method for manufacturing a concrete panel according to claim 2, wherein the joint material is mounted between the tile and the mold.