JPH09287206A - Back joint waterproofing work execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a field-work and improve weatherability and durability by forming a non-combustible inorganic waterproof plate having non-combustible waterproof coat layers on the six faces, sticking it to a plastic foam plate having water gradient on the back face and forming recessed grooves in the periperal two directions on the surface so as to form a waterproof plate, and filling the recessed grooves with sealing material. SOLUTION: A non-combustible inorganic waterproof plate 1 formed with waterproof coat layer on the six faces of a rectangular inorganic flat plate is stuck to a plastic foam plate 2 in which water gradient is provided on the back face and recessed grooves 3 are formed in the peripheral two directions of the surface. The heat insulating waterproof plates are stickingly provided on a base board, a gap between the non-combustible inorganic waterproof plates 1, 1 is sealed with sealing material as back joint, and a waterproof coating layer is formed by joining on the upper face of the sealing material. At rainy weather or even lust after rainy weather, percolating water is contacted with the back of the heat insulating waterproof plate stuck on a waterproofing construction face, but by existence of the waterproof coating layer on the back of the noncombustible inorganic waterproof plate 1, water is naturally dispersed from the interior of waterproofing construction face so as to eliminate time loss such as dry waiting. The upper face of the sealing material is not exposed outward by the waterproof plate 1, and hence waterproofing and weather resistance are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof construction method for a building, including a roof of a building, a rooftop, a balcony, an outer wall, a floor of a parking lot, an underground passage, a pool, a kitchen, a bathroom, a front door, and an interior / exterior. The present invention provides a waterproofing method which is particularly excellent in fireproofness and workability when performing waterproofing work.

[0002]

2. Description of the Related Art As a conventional waterproofing method for a building, a sheet waterproofing method for laying metal plates or sheets, an asphalt waterproofing method for forming a waterproof layer using an asphalt-based material, a mortar waterproofing method for applying mortar, a synthetic resin There is a coating film waterproofing method for forming a waterproof coating film by applying a waterproof material made of aluminum.

In any of the above methods, cracks occur due to deterioration over time due to repeated expansion and contraction due to wind and rain or temperature changes. The occurrence of cracks causes water leakage and forms a water channel, which is a factor of water leakage expansion. Moreover, these cracks could not be easily found, and it was very difficult to repair the water leaks.

Further, since the conventional waterproofing method completely covers the surface to be waterproofed, air generated from the surface to be waterproofed,
In some cases, peeling or floating occurred due to the influence of moisture or the like. Therefore, there is a problem that a degassing tower must be installed to degas and dehydrate.

[0005] Waterproofing work depends largely on the degree of skill of the worker, and for unskilled workers, the difference between good work and bad work is remarkable. There is also a problem that it is not possible to work in rainy weather because of the large amount of outdoor construction, which is affected by the weather.

With respect to a building constructed in a fireproof area or the like, there are regulations on each part of the building, and the use of noncombustible materials is obligatory. There was a strong demand for a waterproof construction method using a non-combustible material instead of a waterproof coating layer made of a combustible material. In addition, since all joints for waterproofing work are external joints and are in direct contact with the outside, there are problems such as poor weather resistance and deterioration, or peeling due to scratches.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a non-combustible inorganic waterproof plate having a factory-produced non-combustible waterproof coating layer on six surfaces is provided with a water gradient on the surface. By using a waterproof plate attached to a plastic foam plate material that has concave grooves formed in two directions around the circumference, work at the site is extremely easy, and there is no concern about the quality of the finish due to the difference in the skill level of the workers, immediately after the rain. The construction can be performed immediately even in the case of using, waiting time can be saved, water leakage due to cracks in the coating film can be completely prevented, and the sealing material filling the joints can be used as the back joint without being exposed to the outside. Formed inside by weather resistance,
The purpose is to improve durability.

[0008]

In order to achieve the above object, a back joint waterproofing method according to the present invention is an inorganic flat plate on the surface of a plastic foam plate material having a water gradient on the back surface and concave grooves formed in two directions around the surface. The horizontal and vertical ends of the non-combustible inorganic waterproof board having the non-combustible waterproof coating layer formed on the front and back surfaces and the six surfaces of the end are positioned substantially in the center of the concave groove formed in the plastic foam plate material, and the other 2 An adiabatic and waterproof plate is produced by adhering lateral and vertical ends, which are sides, to the outside of the ends of the plastic foam plate material by about 30 to 50 mm. Sealing material is filled in the concave grooves in the two directions of the heat insulating waterproof plate, and is attached to the outside of the plastic foam plate material of another heat insulating waterproof plate to be joined to this heat insulating waterproof plate by about 30 to 50 mm. Position the end of the non-combustible inorganic waterproof plate on the sealing material filling part of the concave groove and butt-join it.

By making the length and width of the plastic foam plate material smaller by about 5 to 15 mm than that of the non-combustible inorganic waterproof plate, it is possible to eliminate the clearance when the heat insulating waterproof plate is butt-joined.

[0010]

According to the above construction, a non-combustible inorganic waterproof plate having a waterproof coating layer formed in advance on six sides of a rectangular inorganic flat plate having an arbitrary size is provided with a water gradient on the back side and concave grooves are formed in two directions around the front side. By factory-manufacturing a heat-insulating waterproof board attached to a plastic foam board material, even for inexperienced people, it is possible to easily attach it in a grid pattern using attachment fasteners or adhesives, and to create a gap between non-combustible inorganic waterproof boards. It is possible to form a waterproof coating layer by using a sealing material as a back joint and sealing with a sealing material, and joining on the upper surface of the sealing material.

Even if the waterproofing surface is rainy or immediately after raining, there is no time loss such as waiting for drying, and even if the waterproofing surface is immediately applied, the water contained in the waterproofing surface or the permeated water due to the rain is stuck on the waterproofing surface. The non-combustible inorganic waterproof plate that is in contact with the back surface of the heat-insulating waterproof plate but is on the top surface of the heat-insulating waterproof plate does not rise through the non-combustible inorganic waterproof plate due to the waterproof coating layer. It gradually diffuses naturally from the surface.

According to the above, the waterproof surface of the building after waterproofing is completely shielded from rainwater or precipitation by the noncombustible inorganic waterproof board having the waterproof coating layer on the six surfaces according to the present invention and the sealing material filled in the back joint. be able to.

Since the waterproof coating layers on the back and end faces of the noncombustible inorganic waterproof board and the sealing material filled in the back joint are not exposed to the outside, it is possible to prevent performance deterioration due to ultraviolet rays, near infrared rays, etc. of sunlight. It has high weather resistance and does not easily change over time.

Since the upper surface of the sealing material is a noncombustible inorganic waterproof board, the sealing material is not exposed to the outside. Therefore, the water resistance and weather resistance of the sealing material are improved, and the deterioration of the sealing material can be prevented. When joining the non-combustible inorganic waterproof board, the sealing material is also filled in the minute gaps between the non-combustible inorganic waterproof boards to further improve the waterproof effect and durability of the sealing material.

The unit size of the non-combustible inorganic waterproof plate is such that it is easy to handle in construction, and since the unit coating area is small, cracks do not occur due to expansion and contraction due to temperature changes. Furthermore, it can flexibly follow expansion and contraction of the waterproof construction surface and has a strong proof strength against impact such as heavy load and earthquake load. For this reason, the waterproof performance according to the present invention is very durable with almost no aging.

The waterproofing method according to the present invention is applied as a non-combustible waterproof material to the inorganic flat plate made of non-combustible material and is recognized as a non-combustible material as a whole. It can comply with all the required regulations and can be used for fireproof structures in the most suitable way as a waterproofing method for structures.

When a heat-insulating waterproof plate having a proper size is attached to a waterproof construction surface of a building in the form of a base, in the case of a small building, it may be simply laid with an adhesive as it is, but the base is a steel frame or the like. In the case of, it is fixed by the mounting metal fittings,
In the case of a flat concrete surface or the like, it is general to fix it with an adhesive, but the reverse case is also possible.
When the base is made of wood, it is adhered with an adhesive or fixed with nails or screws to form a noncombustible waterproof coating layer on this surface.

When it is used as an outer wall and the building cannot be waterproofed from the outside due to the proximity of the building, the waterproofing can be completely performed from the inside of the building by fixing it with a mounting stopper. Since it is a back joint, only sealing with a sealing material is sufficient, and it is not necessary to form a waterproof coating film layer on the upper surface of the sealing material.

It is possible to attach a mounting metal fitting to the back surface of the inorganic flat plate in advance, and then stick the inorganic flat plate having the waterproof coating layers formed on the front and back surfaces and the end surface to the plastic foam plate material. Therefore, the attachment metal fitting can be freely attached.

As the inorganic flat plate, slag gypsum board, calcium silicate board, gypsum board, flexible board, asbestos cement perlite board, pulp cement board, ALC, PC board, block, ceramic board, GRC panel, extruded cement board and the like are used. The size of the rectangular inorganic plate is not particularly limited, but it may be any size that is easy to handle and install, and the vertical and horizontal dimensions are 400 to 1000.
It is preferable that the thickness is about mm and the thickness is 6 to 30 mm.

The waterproof coating layer formed on the six sides of the inorganic flat plate is a waterproof layer using an asphalt-based material, a waterproof layer using a synthetic rubber or synthetic resin sheet, or a synthetic resin liquid material for reinforcing cloth and mesh. It may be a waterproof layer formed by applying or spraying while adhering. However, it must be a building finish coating material as a fire protection material based on the Building Standards Law, and it must be a nonflammable waterproof material equivalent to the base material certified by the Ministry of Construction. A non-combustible inorganic waterproof plate can be formed by applying a non-combustible waterproof material equivalent to a base material to six surfaces of an inorganic flat plate that is a non-combustible material.

The adhesive used here has elasticity, and epoxy modified rubber latex type, rubber latex type, vinyl acetate resin emulsion type, vinyl copolymer emulsion type and the like can be used. Preferably, it is an epoxy-modified rubber-based latex type.

The plastic foam plate material having a water gradient on the back surface and concave grooves formed in two directions around the front surface is not particularly limited as long as it can be extruded or bead-molded, but more preferably polystyrene, vinyl chloride,
Polyurethane, phenol, polyisocyanurate, etc. The water gradient on the back side is about 1/100 to 1/200, and the direction of the gradient is the horizontal direction, the vertical direction, the diagonal direction of the plate,
It can be designed arbitrarily according to the shape of the waterproof construction surface such as bidirectional from the center of the plate material.

The thickness of the plastic foam board is 10 to 50
Although it is in the range of mm, it is more preferably 15 to 40 mm. The concave groove formed in two directions around the surface is 10 to 30 mm in width from 10 to 30 mm at the end of the plastic foam plate material and its depth is in the range of 5 to 15 mm.

The sealing material for sealing the joints between the inorganic flat plates having the waterproof coating formed on the six sides is a silicone-based sealing material one-component type and / or two-component type, a modified silicone-based sealing material one-component type and / or two-component type. A two-component type of modified silicone-based sealing material is preferred. More preferably, it is a two-component modified silicone-based sealing material.

With the non-combustible inorganic waterproof plate attached to one side from the center of the groove of the plastic foam, the groove is sufficiently filled with the sealing material. When a non-combustible inorganic waterproof plate attached to another heat-insulating waterproof plate to be bonded is placed and tightened on the other side of the filled groove, excess sealing material causes the butt joint between the non-combustible inorganic waterproof plates. It fills even a small gap and then flows out a little onto the noncombustible inorganic waterproof plate, but it is sufficient to wipe off this part.

[0027]

Embodiments of the waterproof construction method according to the present invention will be described below with reference to the drawings.

On the surface of a polystyrene foam plate material having a thickness of 30 mm formed by bead molding with a diagonal of 1/200 on the back surface on a diagonal line, the front and back surfaces of a slag plaster board having a thickness of 11 mm and the six end surfaces are made of synthetic rubber acrylic resin emulsion. A heat-insulating waterproof board was prepared by sticking a non-combustible inorganic waterproof board coated and covered with a non-combustible waterproof material equivalent to the base material (“Revall Mighty” manufactured by Toyo Exterior Co., Ltd.). The dimensions of the non-combustible inorganic waterproof board are 450 × 900 × 11 mm, and the polystyrene foam board material is 440 × 890 × 30 mm, which are 10 mm smaller in length and width than the non-combustible inorganic waterproof board.

A groove having a width of 20 mm and a depth of 10 mm with a center line of 30 mm from the ends of the two vertical and horizontal surfaces of the plastic foam plate material was formed. The non-combustible inorganic waterproof plate was attached such that the end portions of the two surfaces were on the center line of the groove. FIG. 1 is this perspective view. In the two vertical and horizontal surfaces, the dimension from the end surface of the noncombustible inorganic waterproof plate to the end surface of the plastic foam plate material is 30 mm.
On the other hand, the other two vertical and horizontal end faces of the noncombustible inorganic waterproof plate are located 40 mm outside the plastic foam plate material. That is, the dimension from the end face of the noncombustible inorganic waterproof plate to the end face of the plastic foam plate material is 40 mm.

Modified silicone sealing material (Hitachi Chemical Co., Ltd.) in the groove formed in the plastic foam plate material
"Hybon 2000"). On the upper surface of the filled sealing material, another non-combustible inorganic waterproof board of another heat insulating and waterproof board was placed, and a slightly overflowing caulking material was wiped off on the butt joint between the non-combustible inorganic waterproof boards. 2 is a sectional view of the construction executed on the balcony of the house as described above, and FIG. 3 is an enlarged view of the back joint portion. The heat-insulating tarpaulin was glued onto the plywood on the balcony.

[0031]

EFFECTS OF THE INVENTION The waterproofing method according to the present invention does not require a high-level on-site construction technique, so that even an unskilled worker can ensure a high-performance building waterproofing performance and can significantly shorten the construction period. Long-term weather resistance, which has never been obtained before,
A non-combustible material that is durable, has little expansion and contraction due to wind and rain, and changes in temperature, and has extremely low deterioration over time has become the finished surface, and it has been possible to make possible a waterproof construction method suitable for fire prevention and fire resistant construction.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat insulating waterproof plate.

FIG. 2 is a sectional view of a balcony construction.

FIG. 3 is an enlarged view of a back joint portion.

[Explanation of symbols]

 1. Incombustible inorganic waterproof board 2. Plastic foam board 3. Groove 4. Adhesive 5. Plywood 6. Rafters 7. Rising surface 8. Sealant 9. Clearance clearance 10. Water gradient

Claims (2)

[Claims] 1. A non-combustible inorganic material in which a non-combustible waterproof coating layer is formed on the front and back surfaces of an inorganic flat plate and the six surfaces of an end portion on the surface of a plastic foam plate material having a water gradient on the back surface and grooves formed in two directions around the surface. Position the horizontal and vertical edges of the waterproof plate approximately in the center of the groove formed in the plastic foam board, and stick the other horizontal and vertical edges outside the edges of the plastic foam board. I made a heat insulating waterproof plate that I wore,
Sealing material is filled in the concave grooves in the two directions of the heat insulating waterproof plate, and the end of the non-combustible inorganic waterproof plate attached so as to be outside the end of the plastic foam plate of the other heat insulating waterproof plate. A back joint waterproofing method characterized by joining on the sealing material filling portion of the groove. 2. The back joint waterproofing method according to claim 1, wherein the longitudinal and lateral dimensions of the plastic foam plate material are set to be slightly smaller than those of the noncombustible inorganic waterproof board in order to provide relief during construction.