JP2000282594A - Water stop joint structure and its construction method - Google Patents

Abstract

(57) [Summary] [Problem] To be able to reliably stop water without applying a large stress to the water stop portion, to enhance the workability at the time of mounting the surface material, and to further improve the joint width and joint depth. The present invention provides a waterproof joint structure having a long-term durability with high reliability of the water stopping ability, which is not affected by any variation in the dimensions of the joint structure. SOLUTION: A watertight joint structure 1 is provided. Water stop structure 1
Then, at least a pair of the face materials 2, 2 'and the face materials 2, 2'
The combination with the surface material-side adhesive water-stop material 3, 3 'which is in close contact with the back side of the base material-side adhesive water-stop material 4, 3' The base material 5 is adhered to the back side of the base material-side adhesive water-stopping material 4 adjacent to the top, and the joint 6 is provided between the face material-side adhesive water-stopping materials 3, 3 '. Is formed, the base material-side adhesive waterproof material 4 is exposed in the joint 6, and the side surface of each face material-side adhesive waterproof material 3, 3 ′ is exposed in the joint 6, The joint material 7 is in close contact with each exposed surface of the base material-side adhesive water-stopping material 4 and each of the face material-side adhesive water-stopping materials 3, 3 '.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a space between adjacent planar outer wall materials (hereinafter referred to as "surface materials") in the field of construction and civil engineering.
In a so-called joint structure, the present invention relates to a structure in which water is stopped between a face material side and a ground side by a water stopping material.

[0002]

2. Description of the Related Art Conventionally, in a construction or civil engineering structure in which a face material is attached to a structure or an auxiliary member of the structure, a method of stopping water between adjacent face materials can be roughly divided into two. .

[0003] The first method is a construction method in which a gap between adjacent face materials, that is, a so-called joint is stopped after the face material is attached, and the treatment is performed using an irregular sealing material or a fixed shape. It is common to install a gasket later.
In addition, various expansion joints are used when the width of the joint is wide, when the width is uneven, when the movement is large, and the like.

[0004] A second method is to attach a water stop portion in advance, and then attach a surface material to the water stop portion. One or both of the base material and the surface material has a fixed elastic stop. A method of attaching a water material, a so-called gasket or packing first, and then attaching a face material,
There is a method in which a fixed adhesive water-stopping material is attached to one of the base material and the face material in advance, and then the base material and the face material are attached.

[0005]

SUMMARY OF THE INVENTION The present inventor has obtained the following findings by studying a conventional water blocking structure.

[0006] The method of performing water stoppage treatment of joints using a fixed gasket or the like after attaching the face material tends to cause the joint material to fall off or to decrease the water stoppage when the joint width greatly varies. The method using the expansion joint
The target joint width is relatively wide, 50 mm to 600 mm, and the joint width at the time of installation is -50% to +10 of the standard design value.
Although it can cover a very wide range of about 0%, the number of parts is large and the structure becomes complicated. In addition, such a method requires a larger installation space than that using a gasket or a waterproof sealing material, and provides a mechanism that is bulky on the surface of the face material in a case where the joint space is narrow or due to restrictions in appearance. If this is not allowed, it is difficult to apply.

[0007] The method using an irregular sealing material, so-called caulking, can respond flexibly to the situation of the site, such as variations in joint width at the time of construction, unevenness of face materials, etc. Is large, the joint material is likely to be damaged and peeled from the adherend. In addition, the surface to be adhered at the time of construction is required to be in a dry state, and it is required that there is no attached matter such as dust and oil and fat. In particular, since it is easily affected by moisture, it is easily influenced by the weather. Further, the water stoppage tends to vary depending on the skill of the worker. in addition,
When emphasis is placed on appearance, a masking tape or the like needs to be attached to the periphery, so that there are drawbacks such as the need for construction work.

[0008] The installation method of attaching the face material after attaching the water-stopping member in advance has the following problems. Because it is easy to use the equipment of the above, compared with the method of performing the joint processing work after attaching the surface material,
While the work time at the construction site can be greatly reduced, it has the following disadvantages.

Regarding the method of installing the gasket, in the case of a method in which a so-called gasket or packing called a gasket or packing having a fixed elasticity is attached first, and the face material is attached from above, the alignment is not performed. Relatively easy. However, it is necessary to compress the elastic water-stopping material within a range of effective stress in order to ensure water-stopping.

In such a case, high stress must be applied in order to obtain a high water-stopping property, and it is necessary to cope with insufficient stress due to dimensional variations occurring at various locations due to various factors. In addition, it is necessary to apply a larger stress. In order to compress the water blocking material with a large force in the entire face material, and to prevent breakage and deformation of the face material, sufficient strength of the face material against the stress is required. In addition, some pressing mechanism such as using a fixing bolt in the pressing direction of the face material is required.

According to the present invention, it is possible to reliably stop water without applying a large stress to the water stopping portion, to enhance the workability at the time of attaching the face material, and to further improve the joint structure such as joint width and joint depth. It is an object of the present invention to obtain a water-stop structure having a long-term durability with a high degree of certain water-stop capability, which is not affected by any variation in dimensions of the water.

[0012]

According to the present invention, at least a pair of a face material and a face material-adhesive water-stopping material which is in close contact with the back side of the face material is used as the combination of the face material-side tackiness. The base material is in close contact with the base material-side adhesive water-stop material via the water-stop material, and the base material is in close contact with the back side of the base material-side adhesive water-stop material. A joint is formed between the side adhesive water-blocking materials, the base material-side adhesive water-blocking material is exposed in the joint, and the side surface of each face material-side adhesive water-blocking material is the joint. The present invention relates to a watertight joint structure, which is exposed in the ground and has a joint material in close contact with each exposed surface of the base material-side adhesive waterstop material and the face material-side adhesive waterstop material.

The inventor of the present invention has conducted research on various watertight joint structures in order to obtain a watertight joint structure having excellent watertightness, and has conducted repeated studies. Above all, the present inventor applied a fixed adhesive water-stop material to one or both of a base material and a face material in advance, and then attached the base material and the face material to each other. Or, the use of a combination of a waterproof material having a high adhesive strength and an adherend was examined. As a result, the present inventors have found that such a combination has a high water-stopping property, but poor alignment is the biggest problem.

A method in which a fixed adhesive is pre-applied to both the base material and the face material, and then the face material is attached is such that, when the face materials are partially contacted during alignment, the positional relationship between the two at that point Are fixed, and alignment becomes difficult. In order to perform the positioning completely, it is necessary to first perform the positioning of the face material and to move and attach the face material from the vertical direction while maintaining the position in the direction parallel to the face material. However, it has been found that this operation involves a great deal of difficulty during implementation, except when the face material is small and light.

In general, in the field of civil engineering and construction, many surface materials to be handled are heavy enough to be installed with a crane or the like, and the size is about several meters. Positioning requires time and skill. And Due to such a drawback, a method of pasting a standard adhesive material on both the base material and the face material in advance, and then attaching the face material is small, light and easy despite easy obtaining of reliable water stoppage. Except for what humans have,
It turns out that it can hardly be realized.

Conversely, it has been found that the water-stopping materials having low adhesive strength or the combination of the water-stopping material having low adhesiveness and the adherend are excellent in the alignment property but inferior in the water stopping performance. In order to increase the water stopping performance, it is necessary to first apply pressure with a large stress in order to securely adhere the water stopping material to the adherend. In addition, in order to obtain the necessary water stopping properties, it is necessary to keep the adherend surface clean during construction.

Based on such knowledge, the present inventor has conducted intensive studies. As a result, in a watertight joint structure in which a waterproof material is disposed on both sides of a back surface of an adjacent face material, when the face material is installed, The adhesive water-stop material is provided on both the surface material side and the base material side to form a water-stop portion, and the adhesive water-stop material is exposed at the joint of the water-stop portion. It has been found that, by bringing the joint material into close contact with the exposed surface of the water-stopping material, it is possible to obtain a highly reliable water-stopping joint structure having excellent water-stopping properties, and reached the present invention.

At a construction site where the surface material is attached to the base material and the joint material is actually attached between the surface materials, the water stoppage of the finally joined portion is easily affected by the accuracy and circumstances of the surroundings, and is unstable. Yes, it is most important in considering the overall water stoppage. This is indicated by the fact that the water stopping performance is affected by the state of the adhesive surface between the caulking and the adherend in the caulking method and the contact surface between the water stopping material and the face material in the dry joint method.

For the purpose of securing the generally required water-stopping property, when the stress applied to the fixed water-stopping material is low,
Although the water stoppage is also inferior, by adopting the water stop joint structure of the present invention, at the site where the installation of the face material is performed, the final joint of the water stop portion is both an adhesive water stop material,
These contact portions are easily adhered and adhered by a very small force crimping, and as a result are integrated as a water-stopping material, so that the reliability of water-stopping at this portion is very high.

In the watertight joint structure of the present invention, the face material-side adhesive waterproof material and the base material-side adhesive waterproof material are exposed on the wall surface and bottom surface of the joint, and the joint material adheres to these exposed surfaces. are doing. Therefore, in the present invention, the joint material adheres to the joint without being affected by the joint width variation even if the joint width varies, and there is no falling off or poor adhesion.

In the case of a long joint, a variation in joint width tends to adversely affect the adhesion of the joint material. A joint material such as a gasket is often not sufficiently pressed in a portion having a large joint width, but it is difficult to insert the joint material in a portion having a small joint width, and workability is significantly reduced.

In the present invention, the water-tightness of the joint is ensured by the face material-side adhesive water-stopping material and the base material-side adhesive water-stopping material, and the face material-side adhesive stoppage exposed on the side and bottom surfaces of the joint is provided. Since the joint material adheres to the water material and the base material-side adhesive water-stopping material, variations in the joint width do not adversely affect the adhesion of the joint material.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of a water stop joint structure according to an example of the present invention. FIG. 2 is a longitudinal sectional view illustrating a construction process of an example of the watertight joint structure of FIG. 1. FIG. 3 is a longitudinal sectional view illustrating another construction process of the watertight joint structure of FIG. 1. FIG.
It is a perspective view which shows another construction process of the water stop joint structure of FIG. FIG. 5 is a longitudinal sectional view showing the principle of the construction method of the present invention.

As shown in FIG. 1, in the watertight joint structure 1,
At least one pair of the face materials 2, 2 'and the face material-side adhesive water-stopping material 3, 3' which is in close contact with the back side of the face material 2, 2 ', The base material 5 is in close contact with the base material-side adhesive water-stop material 4 in a state of being adjacent to the base material-side adhesive water-stop material 4 via 3, 3 '.
Joints 6 are formed between the surface material-side adhesive water-stopping materials 3 and 3 ', and the base material-side adhesive water-stopping material 4 is exposed in the joints 6, and the surface material-side adhesive waterstops are formed. The side surfaces of the water materials 3, 3 'are exposed in the joints 6, and the joint material 7 is provided on each of the exposed surfaces of the base material-side adhesive waterproof material 4 and the face material-side adhesive waterproof material 3, 3'. Closely adhered.

In the watertight joint structure 1, the waterstop portion is obtained by the close contact of the two kinds of adhesive waterstop materials 3, 3 'and 4, and the wall surface of the joint 6 between the face materials 2, 2' and Since the joint material 7 is in close contact with the U-shaped surface of the adhesive waterproof material exposed on the bottom surface, extremely high waterproofness is exhibited.

Further, in the watertight joint structure 1, even when an external impact is applied, the adhesive portions of the adhesive waterproof members 3, 3 ′, and 4 that are in close contact with the face materials 2, 2 ′ and the joint material 7 are formed. It follows the movement of the face materials 2, 2 'and the joint material 7, and is excellent in waterproofness, without falling off of the face materials 2, 2' and the joint material 7.
A joint structure having excellent reliability can be obtained.

[0027] Furthermore, since the waterproof joint structure is tolerant to the size of the joint width and the variation in the distance between the surface material and the base material, the waterproof water-proof joint structure exhibits reliable waterproofness even if the overall dimensional accuracy is low. However, the manufacturing cost of the entire structure including the joint work can be reduced.

JP-A-10-227076 describes a joint gasket. 9 and 10 are longitudinal sectional views of such joint gaskets. As shown in FIGS. 9 and 10, the joint gasket 22 includes a plurality of lips 22a, 22b, 22c, 22d and a hollow lip 22e.
The hollow lip portion 22e seals the lower part of the outer wall base plywood 23 side including the boundary line 25 between the outer wall base plywood 23 and the outer wall board 24.

The joint gasket 22 has a boundary line 2 between the outer wall base plywood 23 and the outer wall board 24 of the joint portion due to the physical expanding action or the adhesiveness of the hollow lip 22e.
5, the joint 26 at the lower part of the outer wall base plywood 23 side
It only stops the water. Therefore, at the joint 26, water cannot be stopped between the lower part of the outer wall base plywood 23 and the steel frame material 27, and rainwater or the like that invades in the length direction of the joint cannot be effectively waterproofed.

In the present invention, the adhesive water-stopping material is exposed on the wall surface and the bottom surface of the joint, and the jointing material adheres to these exposed surfaces. Since the intrusion of rainwater or the like is well prevented, an extremely high water stoppage can be obtained as a whole structure.

In the present invention, various methods such as a method of sticking / adhering and a method of mechanically fixing can be used for attaching the tacky waterproof material in advance to the back side of the face material and the front side of the base material. . In any of these methods, since the surface material and the base material can be individually treated, there is a margin in the working space, it becomes possible to apply an external force, the alignment and the like become easy, and the reliability of the water stoppage is improved. Can be higher. When they are installed in a factory, they can be installed under more favorable working conditions such as more stable temperature, environment free from dust and rainwater, use of equipment and the like. With these treatments, the reliability of the watertight joint structure can be kept very high.

The face material according to the present invention does not need to be waterproof as long as the face material has a waterproof function on its surface and end face, and various face materials can be used. For example, concrete and metal panels mainly used for curtain walls and the like, and ceramic and metal sizing boards mainly used for houses and the like can be mentioned.

The base material according to the present invention is not particularly limited, and those requiring various waterproof treatments can be used. For example, ordinary building materials can be used, such as metal, wooden, concrete columns,
Frames and plates for mounting beams and outer walls are exemplified.

The face material and the base material according to the present invention include:
Various structural materials or auxiliary members of structural materials can be provided. In such a case, the face material and the base material are held and fixed by the face material-side adhesive water-stop material and the base material-side adhesive water-stop material via a structural material or an auxiliary member.

The distance between the face material and the base material according to the present invention can be designed to have various dimensions. Such an interval can be determined by the thickness of the face material-side adhesive water-stopping material and the base material-side adhesive water-stopping material, but in some cases, the structural material or the auxiliary member of the face material and the base material may be provided. It can be designed by the thickness and the thickness of the face material-side adhesive water-stopping material and the base material-side adhesive water-stopping material.

In the watertight joint structure of the present invention, the joint material is provided in the joint between the face materials, that is, in the surface direction of the surface cladding material. A gasket or caulking is used for such a joint material, but a water-stopping function is not essential, and a material having no water-stopping property may be used. For this reason, a free cover without water stoppage, for example, a free design with enhanced design,
An extremely weather-resistant material, an inexpensive material, or the like can be used.

The materials of the face material-side adhesive water-stopping material and the base material-side adhesive water-stopping material according to the present invention may be the same or different. Examples of the material include butyl rubber, chloroprene rubber, and acrylic resin. In consideration of creep resistance and waterproofness, an adhesive water-stop material formed of a butyl rubber-based material is preferable. In particular, a product using recycled butyl rubber has high creep resistance and high shape retention performance over a long period of time, and thus can exhibit a stable water stopping effect.

In the present invention, if necessary, a plate-like body can be laminated between the surface layer and the back layer of the base material-side adhesive water-stopping material. For the base material-side adhesive water-stopping material, for example, butyl rubber water-stopping material having elasticity can be used alone, but in the case of laminating a plate-like body to the base material-side adhesive water-stopping material,
Such a plate-like body makes the surface of the adhesive waterproof material substantially smooth,
In order to make the pressure-bonding stress uniform, variations in the dimension of the distance between the back side of the face material and the base material are absorbed, and the water stopping performance of the water stopping joint structure can be further enhanced.

Various materials can be used for such a plate-like body. When an elastic body is used, the degree of freedom in setting the dimensions of the adhesive water-stopping material is increased, and the dimension between the face material and the base material is increased. It is even more effective to absorb the variation of

In the present invention, since the adhesive waterproof material is provided on both the face material and the base material, the two adherends are adhered with a slight stress. Therefore, a soft elastic body can be used. In addition, since a large stress is not applied to the face material, the base material, and the structural material supporting both of them, breakage and deformation of the face material can be avoided, and a material having a reduced strength can be used. . Similarly, a material having a reduced strength of the structural material can be used.

Further, by using an adhesive water-stopping material laminated with an elastic body, when the joint movement is large, not only the adhesive water-stopping material can absorb the dimensional change but also the elastic body can change the dimensional change. Due to absorption, breakage of the adhesive water-stopping material can be effectively prevented, and stable water-stopping can be obtained as a water-stop joint structure.

Examples of the material of such an elastic body include natural rubber, synthetic rubber such as ethylene-propylene copolymer rubber and chloroprene rubber, or foam made of synthetic resin such as polyvinyl chloride, ethylene-vinyl acetate copolymer and polyethylene. body,
Alternatively, a widely used material such as a combination of a foam and a solid molded product can be used. These can achieve the purpose relatively inexpensively.

Such an elastic body does not necessarily need to have waterproofness, and has no particular function after being pressure-bonded to the face material-side adhesive water-stopping material at the time of construction, and a material having poor durability may be used. Is possible.

The plate-shaped body according to the present invention is not limited to an elastic body, but may be made of an inelastic body. By laminating such inelastic plate-like members, the shape of the base material side adhesive water-stopping material can be more stably maintained due to the constraint of the inelastic member.

Examples of the inelastic body include metals such as iron, aluminum, and copper, resins such as olefins, polyvinyl chloride, polyamide, polyester, and polystyrene, ceramics, wood, and bamboo. Can be widely used.

Another use of the inelastic plate-like body according to the present invention is a method of replacing a part of the base material-side adhesive water-blocking material or a part of the elastic body-like plate.
By such replacement, if the price of the adhesive water-stopping material on the base material side is lower than that of the adhesive water-stopping material alone or the elastic body alone, the material cost of the entire adhesive water-stopping material can be reduced.

The plate made of such an inelastic body is
It can be used as an auxiliary material for adjusting the compressive stress of a plate-like body made of an elastic body. Furthermore, if the plate-like body made of such an inelastic body is formed to be hollow, it is often effective to reduce the material cost. Such a plate-shaped body is not particularly limited to a material and the like, and hollow objects of various materials, for example, a resin foam and the like can be used.

In the present invention, a plate-shaped water-stopping body can be laminated between the surface layer and the back layer of the face material-side adhesive water-stopping material. Such a plate-shaped water-stopping material can be used to provide the same function as the above-described base material-side adhesive water-stopping material to the face material-side adhesive water-stopping material. As such a plate-like water stopping body, those having the same material and function as those made of the above-mentioned elastic body or inelastic body can be used. Is exposed in the joint groove, so that at least the surface of the plate-shaped water blocking body exposed in the joint groove needs to be waterproof.

As such a plate-shaped water stopping body, a plate-shaped water stopping body itself having water resistance and exhibiting a waterproof function can be used. For example, a closed cell foam of polyethylene can be used. Moreover, in order to exhibit the above-mentioned predetermined function without using such a plate-shaped water stopping body, a plate-shaped body used for the base material-side adhesive water stopping material may be embedded in the face material-side adhesive water stopping material. .

As the plate-like body and the plate-like water stopping body, a combination of an elastic body and an inelastic body can be used, and two or more layers can be used. Such a plate-shaped body and a plate-shaped water-stopping body are laminated on the base material-side adhesive water-stopping material or the face material-side adhesive water-stopping material using an easy method, so that the reliability of water stopping is at a high level. Can be secured.

In the present invention, the water-stop portion of the face material and the water-stop portion of the base material before the surface material-side adhesive water-stop material is brought into close contact with the base material-side adhesive water-stop material are determined in advance by a factory or the like. It can be manufactured in a place where conditions are satisfied, and an adhesive waterproof material can also be manufactured in such a place. Further, in the present invention, separate adhesive water-blocking materials are respectively adhered to the water-blocking portion of the face material and the water-blocking portion of the base material, and the water-blocking portion of the face material and the water-blocking portion of the base material are separated. , Can be manufactured separately.

The base material-side adhesive water-stopping material and the face material-side adhesive water-stopping material manufactured in this manner stop the water at the back side of the adjacent face material and at the portion of the base material. Even if there is a variation in the joint width, that is, the joint width, as long as the gap between the back side of the face material and the base material is substantially constant, there is almost no effect on the water stoppage. Also, even when the distance between the face material and the base material is different at one end and the other end, the thickness of the base material-side adhesive water-stop material and the surface material-side adhesive water-stop material is adjusted, By providing an appropriate structural material or an auxiliary member between the base material-side adhesive water-stopping material or the face material-side adhesive water-stopping material and the base material or the face material, construction can be performed without any major problem.

As described above, at the site where the face material is installed, the water-stop structure in which the final joint of the water-stop portion is an adhesive water-stop material is very reliable. It is. However, positioning the face material and the base material in a state where both adhesive water-stopping materials are exposed often significantly deteriorates the positioning property at the time of attachment, as described above. For this reason, if the surface materials are easy to handle and lightweight and small, or if a complicated mounting jig is used even when using a crane, etc. Is difficult to implement.

In the present invention, in order to easily perform alignment in a short time and attach a face material, a predetermined adhesive water-stop material on a base material side and a face material-side adhesive water-stop material are required. Provide a length base material side separator and face material side separator,
Without removing these, align the surface material and the base material,
The problem can be solved by adopting a method of removing each separator after attaching the face material.

In the present invention, in order to obtain the watertight joint structure shown in FIG. 1, as shown in FIG. Lumber 3, 3 '
Are adhered to the face materials 2 and 2 ', and the base material-side adhesive waterproofing material 4 is provided with a base material-side separator 8, and the base material-side separator 8 has a drawn-out portion. The surface material-side separators 9, 9 'are provided on the surfaces of the surface material-side adhesive water-stop materials 3, 3' in the combination of the adhesive water-stop materials 3, 3 'and the surface materials 2, 2'. The side separators 9, 9 'can be formed so as to have a drawn portion.

In the present invention, as shown in FIG. 3, one end 8a of the drawn portion of the base material side separator 8 and the end portion of the drawn portion of the one face material separator 9 are provided. Each end of the base material side separator 9 is folded back so as to overlap with each other and projected toward the joint 6, and the other end 8 b of the drawn part of the base material side separator 8 and the end of the drawn part of the other face material side separator 9 ′ Each end of 9'a is folded back so as to overlap with each other and projected in the direction of joints 6,
The face materials 2 and 2 ′ are positioned on the base material 5, the base material-side separator 8 and the face material-side separators 9 and 9 ′ are overlapped, and both ends 8 a and 8 b of the base material-side separator 8 are placed. The base material side separator 8 and the face material side separators 9, 9 'are peeled off by pulling the end portions 9a, 9'a of the face material side separators 9, 9'. The water material 4 can be brought into close contact with the face material-side adhesive water-stopping materials 3, 3 '.

In this way, as shown in FIG. 1, the joints 6 are formed between the face material-side adhesive waterproof materials 3 and 3 ', and the base material-side adhesive waterproof material 4 is connected to the joint materials 6. And the side surfaces of the surface material-side adhesive water-stopping materials 3 and 3 'are exposed in the joints 6, and the exposed surface of the base material-side adhesive water-stopping material 4 and each surface material-side adhesive water-stopping material. The joint material 7 can be brought into close contact with the exposed surfaces of 3, 3 '.

As described above, according to the present invention, the base material-side adhesive water-stopping material and the surface material-side adhesive water-stopping material preferably include an elastic body interposed therebetween. Separators are attached to both of the material-side adhesive water-stopping materials in advance, and after positioning the surface material, the installation method of the surface material is shifted or the finished joint width is irregular due to the simultaneous removal of both separators. Can be prevented, and the difficulty of the work of attaching the face material can be overcome.

FIG. 4 shows how each of the separators 8 and 9 in the state shown in FIG. 3 is actually removed. Each of the separators 8 and 9 is simultaneously pulled and removed in the right rear direction in FIG.

In the present invention, the ends 8a and 9a of the separators 8 and 9 are made longer than the adhesive waterproof material 3 so that the separators 8 and 9 can be gripped at one end where they are firstly removed for work. From the beginning, the elongated portion is bent in advance by about 180 degrees so that the removal can be started from the beginning in a state of being separated by about 180 degrees from the surface to be adhered.

FIG. 5 shows a principle diagram of the separator peeling step. Each of the separators 10 and 11 in FIG. 5 is simultaneously pulled to the right in FIG. 5 and removed. The peeling points of the two separators 10 and 11 from the adhered surfaces of the adhesive waterproof materials 3 and 4 gradually move to the right accordingly. Adhesion starts from the place where the separators 10 and 11 are removed, that is, the left side of the peeling point, and the state gradually moves to the right side.

In the present invention, the separator for protecting the surfaces of the adhesive water-stopping material on the base material side and the adhesive water-stopping material on the face material side and preventing erroneous adhesion is separated by 180 degrees after the face material is attached. In this state, it is made of a material that has a removable flexibility and that can smoothly slide with each other when the separator is in contact with the separator, and the end of the separator is peeled off from each of the adhesive waterproof materials. In the direction, it is long and folded so that it can be grasped and removed after positioning the face material.

In order to remove the respective separators from the adhesive water-stopping material with a separator that is in contact with each other in a state of being pressed from both sides, it is necessary to remove the separators from the respective adhesive water-stopping materials when removing the separators. Can be achieved by adopting a removal method in which peeling proceeds at substantially the same place at the same time.

For this purpose, the separator has such a flexibility that it can be peeled off by about 180 degrees with respect to the adhesive water-stopping material to be adhered, and is not in contact with the adhesive water-stopping material of the separator. It is necessary to satisfy that the surfaces slide smoothly on contact with each other.

In order to further facilitate the separation of the separator, it is preferable to laminate a soft elastic body on the adhesive water-stopping material on the base material side and the adhesive water-stopping material on the face material side. As such an elastic body, a plate-like body or a plate-like water-stop body laminated on the base material-side adhesive water-stop material and the face material-side adhesive water-stop material can be used.

The separator used in the present invention includes:
Various things can be used. A film obtained by applying a release material such as silicon to a polyethylene film, a polyester film, or the like is preferable because it is easy to handle in operation. It is difficult to smoothly remove the separator from a material that easily breaks and lacks flexibility.

By adopting the above-described separator and construction method, it is possible to easily remove only the separator from the adhesive water-stopping material with the separator that comes into contact with each other. In addition, since the surface of the adhesive layer is protected until each separator is removed, the adhesion of dirt, moisture, etc. that inhibits adhesion can be extremely reduced, and is effective in handling and preserving face materials and base materials. In addition, the effects of rainfall and dust during construction can be reduced.

[0068]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail by way of an embodiment with reference to the drawings. FIG. 6 is a longitudinal sectional view of a water stop joint structure according to another example of the present invention. FIG. 7 is a longitudinal sectional view of a still another joint structure according to still another embodiment of the present invention. FIG. 8 is a longitudinal sectional view of a still further joint structure according to still another example of the present invention.

Example 1 A watertight joint structure shown in FIG. 1 was manufactured. In this example, as shown in FIG. 3, after the face material is positioned on the base material, as shown in FIG. 4, the surface of the base material-side adhesive water-stop material and the face material-side adhesive water-stop material are attached to the surface. The provided separators were removed, and the base material-side adhesive water-stopping material and the face material-side adhesive water-stopping material were adhered and bonded.

Both the base material-side adhesive water-stopping material and the face material-side adhesive water-stopping material have a simple structure composed of a single adhesive water-stopping material. In this example, a butyl rubber-based water-stopping material was used for both adhesive water-stopping materials, and the shape retention was good even when the wall thickness was increased.

The butyl rubber-based water-blocking material is compressed when the face material is attached, deforms moderately when the separator is removed, and assists in removing the separator.
The thickness was set so that the base material-side adhesive water-stopping material and the face material-side adhesive water-stopping material were pressed and adhered to each other, having a shape recovery property equal to or greater than the thickness of the separator. Further, in this example, when the positional relationship between the face material and the base material changes, the adhesive water-stop layer itself is deformed and follows.

The joint material was filled with a caulking material such as silicone caulking. The waterstop joint structure in which the joint material adheres can prevent water, light, foreign matter, and the like from entering the joint portion, and can further improve the durability of the waterstop structure, particularly, the adhesive waterstop material. In addition, if the joint material of the same color as the color of the surface layer on the face material side is applied, the design of the entire wall can be improved.

Example 2 A watertight joint structure 12 shown in FIG. 6 was manufactured. In this example, similarly to Example 1, the base material side separator and the face material side separator are simultaneously peeled off, and the base material side adhesive water-stopping material and the face material side adhesive water-stopping material are adhesively bonded. Was.

In this example, the structural material 13 was disposed between the base material side adhesive water-stopping material 4 and the base material 5. The structural material 13 is a hollow body and is formed of metal or resin. Structural material 13
Is mechanically fixed to the base material 5 with a tapping screw 14. In this way, the amount of the adhesive used can be reduced as compared with the case where the whole adhesive water-stopping material on the base material side is formed from the adhesive, and the use of the face materials 2 and 2 ′ and the base material 5 can be reduced. Regardless of the interval, desired shapes of the base material-side adhesive water-stop material 4 and the face material-side adhesive water-stop material 3, 3 'can be adopted. In this example, the structural member 13 does not need to be waterproof, and together with the hollow structure, the material cost can be reduced.

As the joint material 15, a joint material made of a vinyl chloride resin or the like was used. The waterstop joint structure 12 in which the joint material adheres as described above can prevent entry of light, foreign matter, and the like from the joint portion, and can maintain the durability of the adhesive waterstop material.
The design of the entire wall can be improved by applying a joint material having the same color as the color of the surface layer on the face material side.

Example 3 A watertight joint structure 16 shown in FIG. 7 was manufactured. In this example, the base material-side adhesive water-stopping material 17 and the face material-side adhesive water-stopping material 18, 1
8 ′ is between the surface layer 17a and the back layer 17b and the surface layer 18a.
a, 18'a and the back layers 18b, 18'b, except that elastic bodies 17c, 18c, 18'c are laminated.
A watertight joint structure was manufactured in the same manner as in Example 2.

The elastic members 17c, 18c and 18'c are compressed when the face material 2 is attached, and when the separator is removed, it is deformed to help remove the separator easily.
After the separator is removed, the upper layer 17a of the base material-side adhesive waterproof material 17 and the back layer 18 of the face material-side adhesive waterproof material 18 and 18 'are formed.
b and 18'b can be easily pressed and adhered and adhered.

The elastic members 17c, 18c, 18'c
When the positional relationship between the surface materials 2 and 2 ′ and the base material 5 changes, the base material 5 is deformed and follows, so that the surface layer 17 a of the base material-side adhesive water-stop material 17 and the surface material-side adhesive water-stop Lumber 18, 1
The burden of deformation of the back layers 18b, 18'b of 8 'is reduced,
The adhesion is further improved.

Further, the elastic members 17c, 18c, 18'c
The surface layer 17a of the base material-side adhesive water-stop material 17 and the face material-side adhesive water-stop material 1
It becomes easy to freely set the crimping strength of the back layers 18b, 18'b of 8, 18 '. In addition, the elastic members 17c, 1
In the case of 8c and 18'c, when there are irregularities on the back surfaces of the face materials 2 and 2 'and the surface of the base material 5, the influence thereof can be greatly reduced. However, in this example, the face material-side adhesive water-stopping material 1
The elastic bodies 18c, 18'c provided on the 8, 18 'need to be water-resistant and have a waterproof function, such as a polyethylene independent foam.

In this example, the joint material 19 is provided on the base material-side adhesive waterproof material that protrudes in a convex shape. The advantage of the joint material is that it is effective in improving the durability of the adhesive water-stopping material and the design of the entire wall as in the case of Example 2, and the joint material has a wider base material-side adhesive water-stopping material. Will be in close contact,
The durability of the waterproof joint material structure is further improved.

Example 4 A watertight joint structure 20 shown in FIG. 8 was manufactured. In this example, the face material-side adhesive water-stopping material 3, 3 ′ is made of an adhesive alone, and the surface layer 21 a is used as the base material-side adhesive water-stopping material 21.
, A plate-like body 21c, a plate-like body 21d,
And an adhesive layer 2 for fixing the plate-like body 21c and the plate-like body 21d
Except for using a laminate of 1e, it was manufactured in the same manner as in Example 2. The plate-like body 21c is made of an inelastic body, and the plate-like body 21d is made of an elastic body.

In this example, the plate-like body 21c made of an inelastic body may be a metal plate, a hard resin plate, a soft resin sheet, or the like. By providing between the plate-like bodies 21d, it is possible to enhance the holding property of the shape of the base material-side adhesive water-stop material 21 and to make the pressing force to the face material-side adhesive water-stop material 3 more uniform. Becomes

[0083]

According to the watertight joint structure of the present invention, the waterstop portion is obtained by adhesion of two layers of adhesive waterstop material, and the adhesive waterstop exposed on the wall surface and bottom surface of the joint between the face materials. Since the joint material is in close contact with the material, the waterproofness of the joint is ensured, and there is no adverse effect on the adhesiveness of the joint material due to a variation in joint width.

Further, in such a waterproof joint structure, even when an external impact is applied, the adhesive portion of the adhesive material and the adhesive material that adheres to the surface material or the joint material follows the movement of the surface material or the joint material, Demonstrate highly reliable water stop without falling off of the material and joint material.

Further, since the waterproof joint structure is tolerant to the size of the joint width and the variation in the distance between the surface material and the base material, the waterproof water-proof joint structure exhibits reliable waterproofness even if the overall dimensional accuracy is low. In addition, the manufacturing cost of the entire structure including the construction work can be reduced.

[0086] In the method for constructing a water stop joint structure according to the present invention, water is reliably stopped without applying a large stress to the water stop portion.
Enhances workability when installing face materials, further reduces the size of the joint width, the size of the distance between the face material and the base material, and reduces the effects of weather, ensuring high long-term durability with high reliability A water stopping function having the following can be obtained.

In the method for constructing a watertight joint structure according to the present invention, in order to exert a reliable waterstop effect without applying a large stress to the waterstop portion, the surface material, the base material, and the structural material supporting them are required. The strength design can be reduced, and the watertight joint structure can be made lighter in weight and more inexpensive.

Further, according to the method for constructing a watertight joint structure of the present invention, a member of a waterstop portion is manufactured not in a site but in a factory.
Adhesive water-stop material can be adhered to the surface material and the base material, shortening the work time at the construction site, increasing the industrialization rate, and providing a highly reliable water-stop joint structure with little variation at low cost. can do. This also means that the water stoppage of the water stop joint structure does not depend on the skill of the water stop processing operator at the construction site as in the related art.

Further, in the construction method of the watertight joint structure of the present invention, since the construction is hardly affected by moisture at the time of construction, the construction can be performed without being affected by the weather at the time of construction, which contributes to shortening the entire construction period. Great cost reduction effect.

As described above, the method for constructing the watertight joint structure of the present invention can solve the problem of the alignment at the time of attaching the surface material, and can reduce the large stress in that the large stress is not applied to the surface material and the base material. This eliminates the need for a durable structure, and makes it possible to provide high water-blocking properties at low cost by using a method of first providing an adhesive water-blocking material and then attaching a face material.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a water stop joint structure according to an example of the present invention.

FIG. 2 is a longitudinal sectional view showing a construction process of an example of a water stop joint structure of FIG.

FIG. 3 is a longitudinal sectional view showing another construction process of the watertight joint structure of FIG. 1;

FIG. 4 is a perspective view showing still another construction step of the watertight joint structure of FIG. 1;

FIG. 5 is a longitudinal sectional view showing the principle of the method for constructing a watertight joint structure according to the present invention.

FIG. 6 is a longitudinal sectional view of a water stop joint structure according to another example of the present invention.

FIG. 7 is a longitudinal sectional view of a still another joint structure of still another example of the present invention.

FIG. 8 is a longitudinal sectional view of a still another joint structure according to still another embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a conventional joint gasket.

FIG. 10 is a longitudinal sectional view of a conventional joint structure.

[Explanation of symbols]

 1,12,16,20 Waterproof joint structure 2,2 'Face material 3,3', 18,18 'Face material-side adhesive waterproof material 4,17,21 Base material-side adhesive waterproof material 5 Base material 6 Joints 7, 15, 19 Joint materials 8, 11 Base material side separator 9, 9 ', 10 Face material side separator 8a, 8b Ends 9a, 9'a of the drawn part of the base material side separator Pull out of the face material side separator End of portion 13 Structural material 14 Tapping screw 17a Surface layer of adhesive water-stop material on base material side 17b Back layer of adhesive water-stop material on base material side 18a, 18'a Surface layer of adhesive water-stop material on surface material side 18b, 18'b Back layer of surface material-side adhesive water-stop material 17c, 18c, 18'c Elastic body 21a Surface layer of base material-side adhesive water-stop material 21b Back layer of base material-side adhesive water-stop material 21c, 21d Body 21e adhesive layer

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E001 DA01 FA04 FA30 GA12 HB02 HB04 HB05 HC01 HD11 HE01 HF02 LA03 LA16 MA01 MA02 MA03 MA11 4J004 AA05 AA05 AA07 AA10 AB01 CA03 CA04 CA05 CB04 CC02 CC08 DB02 EA05 FA08 FA10

Claims (5)

[Claims] 1. A combination of at least a pair of a face material and a face material-side adhesive water-stopping material that is in close contact with the back side of the face material, and The base material is in close contact with the material-side adhesive water-stop material in an adjacent state, and the base material is in close contact with the back side of the base material-side adhesive water-stop material. Joints are formed, the base material side adhesive water-stop material is exposed in the joint, the side surface of each face material-side adhesive water-stop material is exposed in the joint,
Joint material is closely adhered to each exposed surface of the base material-side adhesive water-stop material and each face material-side adhesive water-stop material,
Water stop joint structure. 2. The method according to claim 1, wherein at least one of the base material-side adhesive water-stopping material and the face material-side adhesive water-stopping material is formed of a butyl rubber-based adhesive material.
Water stop joint structure described. 3. A plate-like body is laminated between a surface layer and a back layer of the base material-side adhesive water-blocking material,
The watertight joint structure according to claim 1 or 2. 4. The sheet-shaped water-stopping body is laminated between a surface layer and a back layer of the face material-side adhesive water-stopping material, according to any one of claims 1 to 3, wherein Water stop joint structure. 5. The watertight joint structure according to any one of claims 1 to 4, wherein the base material-side adhesive watertight material is brought into close contact with the base material, and the face material-side adhesive waterstop is provided. The base material is adhered to the face material, the base material-side adhesive water-stopping material is provided with a base material-side separator, and the base material-side separator has a drawn portion, and at least one pair of the face material-side adhesive A surface material-side separator is provided on the surface of the surface material-side adhesive water-stopping material in the combination of the water-stopping material and the surface material, and each of the surface material-side separators has a cutout portion, and the base material side Each end of one end of the pulled-out portion of the separator and one end of the drawn-out portion of the one face material-side separator are folded back so as to overlap each other and projected in the direction of the joint, and the base material-side separator The other end of the drawn part and the other face material Each end of the end of the drawn portion of the separator is folded back so as to overlap with each other and protruded in the direction of the joint, and the respective face materials are positioned on the base material, and the base material side separator and the respective The base material-side separator and the face material-side separator are overlapped with each other and the end portions of both the base material-side separator and the end portions of the face material-side separators are pulled. And peeling the base material side adhesive water-stopping material and the face material-side adhesive water-stopping material in close contact with each other, forming the joint between the surface material-side adhesive water-stopping materials, The base material-side adhesive water-stop material is exposed in the joint, the side surface of each face material-side adhesive water-stop material is exposed in the joint, the exposed surface of the base material-side adhesive water-stop material and the exposed surface. Make sure that the jointing material is in close contact with the exposed surface of the sticky waterproof material on each side A method for constructing a watertight joint structure, characterized by the following.