JP2002194824A - Water cut-off tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cut-off tool capable of exhibiting a cut-off effect even to a fine crack, resistant to hydraulic pressure, and excellent in constructing property and long-term stability. SOLUTION: This water cut-off tool 1 comprises an external facing body 2 molded of a rubber material or resin material, and a water-swelling material 3 filled in the external facing body and flowable to the outside. This water cut-off tool 1 is easy to construct and resistant to hydraulic pressure since the external facing body is formed of the rubber material or resin material. Further, since the water-swelling material flowable to the outside is filled in the facing body, the water-swelling material penetrates into a fine crack to exhibit a stable cut-off effect over a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stoppage suitable for use in preventing leakage of water, which is disposed at a joint of concrete or a joint in the construction of concrete and other members in a civil engineering or building structure. For tools.

[0002]

2. Description of the Related Art Conventionally, a water-swelling material such as a rubber-based or resin-based sealing material or a smectite-based clay has been used as a water-stopping tool disposed and used in a concrete joint or the like.

[0003]

However, the former sealing material can be easily formed into a required form and is excellent in workability, but cannot cope with fine cracks and has a high temperature in an environment in which it is provided. It had the disadvantage that it deteriorated due to changes and the decomposing action of bacteria, and the water stopping performance attenuated over time.

On the other hand, the latter water-swellable material is excellent in water stopping property and long-term stability because it penetrates into fine cracks, but has a drawback that it is weak against water pressure and is inferior in workability.

Accordingly, an object of the present invention is to provide a water-stopping tool which can exert a water-stopping effect even on fine cracks, is strong against water pressure, and is excellent in workability and long-term stability. Is to do.

[0006]

Means for solving the above problems are to solve the above problems by providing an exterior body formed of a rubber material or a resin material,
A water swellable material that is filled in the exterior body and can flow out to the outside.

Preferably, the rubber material is a water-swellable rubber. The water-swellable material is preferably bentonite. The exterior body is preferably formed in a long body, and the exterior body is preferably provided with a water-swellable material outlet for allowing the water-swellable material to flow outward. The water-stopping device may be a water-stop ring having an outer body formed in an annular shape, and the water-swellable material may be filled in a through-hole provided near the center so as to be able to flow out.

[0008] The water-stopping device of the present invention is formed of a rubber material or a resin material, so that it can be formed into a required form, is easy to construct, is strong in water pressure, and expands in the exterior body. Is filled with the water-swellable material that can flow out to the outside, the water-swellable material penetrates into fine cracks and stably exhibits a water-stopping effect over a long period of time.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a water stopping device according to the present invention. FIG. 1 is a perspective view of an embodiment of the water stopping device according to the present invention, and FIG. 2 is a schematic perspective view showing an example of its use.

As shown in FIG. 1, a water-stopping tool 1 of this embodiment has an exterior body 2 formed of a rubber material or a resin material.
And a water-swellable material 3 that is filled in the exterior body 2 and can flow out. The exterior body 2 is formed in a long body, and a water swellable material outlet 4 for allowing the water swellable material 3 to flow outward is provided in the exterior body 2. Hereinafter, each configuration will be sequentially described in detail.

The exterior body 2 is a part that forms the outer shape of the water-stopping tool of the present invention, and is formed in a required form from a rubber material or a resin material.

As the rubber material, a water-swellable rubber obtained by adding a highly water-absorbing resin to chloroprene rubber, styrene-butadiene rubber, or the like can be suitably used. Thus, the exterior body 2
Is formed of a water-expandable rubber, the expansion action of the water-absorbing rubber makes it possible to more securely adhere to the mounting portion and enhance the water stopping effect.

However, the rubber material is not limited to the water-swellable rubber, but may be other rubbers such as natural rubber, ethylene propylene rubber, isoprene rubber, butyl rubber,
It may be isobutylene rubber, urethane rubber, silicon rubber, fluorine rubber, or the like.

The resin material preferably has a certain degree of flexibility in order to facilitate construction, but is not particularly limited. Examples of the resin material include polyurethane, polyvinyl chloride, polypropylene, polyethylene, and silicone. Resin, fluororesin, vinylidene chloride resin and the like can be used.

The exterior body is desirably formed in a long body having a length of about 2 m or more, and in this embodiment, the longitudinal section is formed in a rectangular shape. An internal space 5 for filling a water-swellable material described later is formed in the vicinity of the center along the axial direction.

The reason why the length of the exterior body is set to about 2 m or more is to take into consideration the convenience in use, that is, the length of the exterior body is 2 m.
If it is less than m, frequent additions must be made. However, those having a length of less than 2 m are also included in the scope of the present invention. Further, the vertical cross-sectional shape of the exterior body 2 of this embodiment is formed in a rectangular shape, but is not limited thereto, and may have any vertical cross-sectional shape.

Further, the exterior body 2 is provided with a water-swellable material outlet 4 for allowing a water-swellable material 3 described later to flow out. This water swellable material outlet 4 is
This is a site for the water-swellable material 3 which has expanded by absorbing water to flow out to the outside.
It is also the part that flows into.

The water swellable material outlet 4 of this embodiment
Is formed by a side groove provided on one of the four sides over the entire length, but may be any as long as it allows communication between the internal space 5 and the outside. Instead, it may be one provided on each side.

The exterior body 2 is filled with a water-swellable material 3 which can expand and flow out. As the water-swellable material, any material may be used as long as it swells when water enters the exterior body 2 and can flow out to the outside. Examples thereof include montmorillonite such as bentonite and other smectites. Based clay, swelling mica, or polymer-absorbing material (eg, starch-acrylate graft copolymer, cross-linked alkali metal acrylate, hydrolyzate of acrylate-vinyl acetate copolymer, etc.) It can be suitably used. In particular, bentonite is a naturally occurring inorganic clay, is excellent in safety and long-term stability, and is preferable because it is inexpensive.

In this embodiment, the side groove forming the water swellable material outlet 4 is not filled with the water swellable material 3, but the portion constituting the water swellable material outlet 4 (for example, in the side groove). The water swellable material 3 may also be filled, and the water swellable material may be exposed to the outside.

As described above, the water-stopping tool 1 of the present invention comprises the exterior body 2 formed of a rubber material or a resin material, and a water-swellable material which is filled in the exterior body 2 and which can expand and flow to the outside. 3, the construction is easy and the water pressure is strong. Further, the water-swellable material penetrates into fine cracks and stably exhibits the water stopping effect for a long time. In particular,
If the exterior body is formed of a water-swellable rubber, the expansion action and the pressing action from the inside of the water-swellable material make it possible to more firmly adhere to the mounting portion and to provide a water-stopping tool having an extremely high water-stopping effect.

Next, a method of using the water stopping device 1 of the present invention will be described. The water-stopping tool 1 is disposed and used at a concrete joint portion or a joint portion between concrete and another member. For example, the use example shown in FIG.
The water stopping device 1 is arranged inside the concrete C2 along the joint between the concrete C1 and the concrete C2, and prevents water leakage at the boundary between the concrete C1 and the concrete C2.

Further, another embodiment of the water stopping device of the present invention will be described sequentially. First, the water stopping device 10 shown in FIG.
Is different from the above-mentioned water-stopping device 1 only in the form of the water-swellable material outlet, and is otherwise the same.
The same components are denoted by the same reference numerals and description thereof is omitted.

That is, the water-swellable material outlet 11 of the water-stopping device 10 of this embodiment is provided along the axial direction, and is composed of a plurality of elongated holes having a rectangular opening.

As described above, the form of the water-swellable material outlet in the water stopping device of the present invention may be composed of a plurality of outlets, and such a plurality of outlets may be one. It may be formed not only on the side surface but also on other side surfaces.

The difference between the water stopping device 20 shown in FIG. 4 and the above-described water stopping device 10 is that a plurality of water swellable material outlets 21 of the water stopping device 20 are arranged in two rows in the axial direction. Only the point constituted by the long hole is the same. The same components are denoted by the same reference numerals and description thereof is omitted. As described above, the form of the water-swellable material outlet in the water stopping device of the present invention may be one in which a large number of outlets are scattered.

The difference between the water-stopping device 30 shown in FIG. 5 and the above-described water-stopping device 10 is that the water-swellable material outlet 31 of the water-stopping device 30 is constituted by a plurality of holes having a circular opening shape. It is only the point that it is, and others are the same. The same components are denoted by the same reference numerals and description thereof is omitted.

As described above, the shape of the opening of the water-swellable material outlet in the water stopping device of the present invention may be any shape.

Further, the difference between the water-stopping tool 40 shown in FIG. 6 and the above-mentioned water-stopping tool 1 is that the water-stopping tool 40 has an adhesive layer 41 on one side surface (lower surface) and a peel-off in which the adhesive layer 41 is covered. The other points are the same except that the layer 42 is provided. The same components are denoted by the same reference numerals and description thereof is omitted.

As described above, since the water-stopping device 40 has the adhesive layer 41 on one side surface, at the time of disposition at the water-stopping point, the peeling layer 42 is peeled off to expose the adhesive layer 41 so as to expose the water-stopping point. The attachment work can be made simpler.

The difference between the water-stopping tool 50 shown in FIG. 7 and the above-mentioned water-stopping tool 40 is that the water-stopping tool 50 is provided between the exterior body 2 made of water-swellable rubber and the adhesive layer 41. It has an intervening layer 51 made of a rubber material or a resin material having high flexibility such as butyl rubber. The same components are denoted by the same reference numerals and description thereof is omitted.

As described above, since the water-stopping device 50 includes the intervening layer 51 formed of a material which is flexible and easily adaptable to the disposition portion, the followability to the disposition portion having irregularities is improved, and the water-stopping device 50 is more reliably. It can be installed to increase the water stopping effect. In addition, it does not have the adhesive layer 41 and the release layer 42,
A structure in which a flexible layer made of butyl rubber or the like is provided on one side surface of the outer package 2 is also included in the scope of the present invention.

Further, the water stoppage tools 60, 70, and 80 shown in FIGS.
The vertical cross-sectional shape is an embodiment in which the water-stopping tool 60 has a triangular vertical cross-sectional shape, the water-stopping tool 70 has a semicircular vertical cross-sectional shape, and the water-stopping tool 80 has a trapezoidal vertical cross-sectional shape. It is formed as follows. The same components as those of the water stopping device 1 are denoted by the same reference numerals, and description thereof is omitted.

As described above, the vertical cross-sectional shape of the water-stopping tool of the present invention is not limited to a rectangular shape, but may be any shape. In particular, as shown in these embodiments, the concrete poured from above has an inclined surface 61. , 81 or the form that is easy to flow along the curved surface 71, it is possible to further prevent the formation of a gap between the concrete and the water stopping tool.

Further, the water-stopping device 90 shown in FIGS. 11 and 12 is a water-stop ring in which the exterior body 2 is formed in an annular body, and the water-swellable material 3 has a through-hole provided near the center. 91 is filled so as to be able to flow out.

More specifically, the water stopping device 9 of this embodiment
0, for example, as shown in FIG.
0b, which is penetrated by a metal rod 111 of a separator 110 or the like which holds the separator 1b.
20 is cast and cured, and then used to seal a gap formed between the concrete 120 and the metal rod 111 to prevent water leakage.

In this embodiment, as shown in FIG.
A concave portion 92 for filling the water-swellable material 3 is formed in the exterior body 2 formed in an annular body, and the water-swellable material 3 is filled in the concave portion 92.

When the metal rod 111 of the separator 110 is penetrated through the penetrating portion 91 and is disposed as shown in FIG. 13, the metal rod 111 is pressed inward by the inner surface 93 of the exterior body 2 and the water is pressed. The swellable material 3 flows out and seals.

The water swellable material 3 of this embodiment is filled in the concave portion 92 provided adjacent to the penetrating portion 91, but is not limited thereto. Materials that are filled with the material and are provided so that the water-swellable material can flow out at least into the through portion are widely included in the scope of the present invention.

[0040]

According to the first aspect of the present invention, a water-stopping tool which exhibits a water-stopping effect even for fine cracks, is strong against water pressure, and is excellent in workability and long-term stability. Becomes According to the invention described in claim 2, in addition to the effect of claim 1, the exterior body itself also has water-swelling properties,
In addition, since the water-swellable material filled inside also promotes the expansion of the exterior body, the water-stopping tool has a higher water-stopping property. According to the third aspect of the invention, in addition to the effects of the first aspect, the water stopping tool is more excellent in safety, long-term stability, and low cost. According to the invention as set forth in claim 4, in addition to the effect of the above-mentioned claim 1, the water swelling material can be a more reliable water stoppage tool to the outside. According to the invention described in claim 5, by using a metal bar or the like of the separator penetrating the penetrating portion and using the same, the gap formed between the separator and concrete is sealed to more reliably stop water. It becomes a water stopping tool.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a water stopping device according to the present invention.

FIG. 2 is a schematic perspective view showing an example of use of the water stopping device shown in FIG.

FIG. 3 is a perspective view of another embodiment of the water stopping device of the present invention.

FIG. 4 is a perspective view of another embodiment of the water stoppage tool of the present invention.

FIG. 5 is a perspective view of another embodiment of the water stoppage tool of the present invention.

FIG. 6 is a perspective view of another embodiment of the water stopping device of the present invention.

FIG. 7 is a perspective view of another embodiment of the water stopping device of the present invention.

FIG. 8 is a longitudinal sectional view of another embodiment of the water stopping device of the present invention.

FIG. 9 is a longitudinal sectional view of another embodiment of the water stoppage tool of the present invention.

FIG. 10 is a longitudinal sectional view of another embodiment of the water stopping device of the present invention.

FIG. 11 is a plan view of another embodiment of the water stoppage tool of the present invention.

FIG. 12 is a sectional view taken along line AA ′ of FIG. 11;

FIG. 13 is a partial cross-sectional view showing one usage example of the water stoppage tool shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water-stopping tool 2 Outer body 3 Water-swellable material 4 Water-swellable material outlet 5 Internal space

Claims (5)

[Claims] 1. A water-stopping tool comprising: an exterior body formed of a rubber material or a resin material; and a water-swellable material filled in the exterior body and capable of flowing out. 2. The water-stopping device according to claim 1, wherein the rubber material is a water-swellable rubber. 3. The water-stopping device according to claim 1, wherein the water-swellable material is bentonite. 4. The exterior body is formed in a long body, and the exterior body is provided with a water-swellable material outlet for allowing the water-swellable material to flow outward. 4. The water-stopping tool according to any one of items 1 to 3. 5. The water-stopping device is a water-stopping ring having an outer body formed in an annular body, and the water-swellable material is filled in a through-hole provided near the center so as to be able to flow out. The water stoppage tool according to any one of claims 1 to 3.