JPH09310418A - Waterproof construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a field work by sticking a noncombustible inorganic waterproof plate on the upper face of a sheet waterproof material stuck on a plastic foam plate, filling the joint part of the noncombustible inorganic waterproof plates with sealing material, and forming a waterproof film layer on the upper part of the sealing material. SOLUTION: A sheet waterproof material 3 is stuck on the surface of a plastic foam plate 2, a noncombustible inorganic waterproof plate 1 of which six faces of inorganic flat plate are formed with noncombustible waterproof film layers is stuck on the upper face of the sheet waterproof material 3, the joint part on the end parts of the noncombustible inorganic waterproof plates 1 is filled with sealing material 6, and a waterproof film layer 7 is formed on the upper part of the sealing material 6. By previously producing in a factory the noncombustible inorganic waterproof plate 1 of which six faces of the rectangular inorganic flat plate of optional size are formed with waterproof film layers, it can be easily grid-likely stuck on the upper face of the sheet waterproof material 3 even by an unskillful person by the use of a fixture fitting or adhesive, and a field work can be facilitated.

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.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and a non-combustible inorganic waterproof plate having a non-combustible waterproof coating layer on six sides, which is factory-produced, is attached to a sheet waterproof material. It is extremely easy to work on site by sticking it on the upper surface of the waterproofing sheet of the flat plate or the plastic foam plate with a water gradient, and there is no concern about the quality of the work due to the difference in the skill level of the workers, immediately after the rain. In this case, the construction can be carried out immediately, and the purpose is to eliminate the need for waiting time by hand, to completely prevent water leakage due to cracks in the coating film, and to improve weather resistance and durability.

[0008]

In order to achieve the above object, a waterproofing method according to the present invention is a sheet waterproofing material, which is obtained by attaching a sheet waterproofing material to the surface of a plastic foam plate having a flat plate or a back surface with a water gradient. A non-combustible inorganic waterproof plate with non-combustible waterproof coating layers formed on the front and back surfaces of the inorganic flat plate and the six sides of the end is attached to the upper surface, the sealing material is filled in the non-combustible inorganic waterproof end joint portion, and the waterproof coating layer is formed on the upper surface In addition, the end of the inorganic flat plate is cut inward to produce a non-combustible inorganic waterproof plate, and the portion having an inverted V shape inside the end joint is filled with the sealing material. Since the sealing material-filled portion is an inverted V-shaped portion inside the end joint portion, it is not exposed to the outside and is excellent in weather resistance and durability.

The length and width dimensions of the plastic foam plate material can be arbitrarily determined, but are set to 900 to 1800 mm in consideration of handling in the field construction.

[0010]

According to the above construction, the factory production of a non-combustible inorganic waterproof plate in which a waterproof coating layer is formed on six surfaces of a rectangular inorganic flat plate having an arbitrary size or a rectangular inorganic flat plate whose ends are cut inward beforehand Even an unskilled person can easily attach it to the upper surface of the sheet waterproof material in the form of a base by using a mounting fastener or an adhesive, seal the gap between the noncombustible inorganic waterproof boards with a sealing material, and then the upper surface of the sealing material. To form a waterproof coating layer.

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 sheet waterproof material that is in contact with the back surface of the plastic foam board material but is on the top surface of the plastic foam board and the back surface of the noncombustible inorganic waterproof board have a waterproof coating layer, so they do not rise through the noncombustible inorganic waterproof board and are not exposed to permeated water, etc. It gradually diffuses naturally from the inner surface of the construction surface.

According to the above, the waterproof construction surface of the building after waterproof construction can be 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 filled sealing material. .

Since the waterproof coating layers on the back and end surfaces of the non-combustible inorganic waterproof board and the filled sealing material are not exposed to the outside, performance deterioration due to ultraviolet rays, near infrared rays, etc. of sunlight can be prevented, and the weather resistance is It is highly unlikely to change over time.

The sealing material is not exposed to the outside because the upper surface of the sealing material has a waterproof coating layer formed or is filled inside when the shape is an inverted V shape. Therefore, the water resistance and weather resistance of the sealing material are improved, and the deterioration of the sealing material can be prevented.

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 plastic foam plate material 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 attached using an adhesive as it is, but the base is a steel frame. In the case of etc., it is generally fixed by a mounting metal fitting, and in the case of a flat concrete surface, etc., it is generally adhered using 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 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. Only the sealing by the sealing material is sufficient, and it is not necessary to form the waterproof coating layer on the upper surface of the sealing material.

A non-combustible inorganic waterproof board having a waterproof coating layer formed on the front and back surfaces and the end surface of the inorganic flat board after the mounting metal fittings are previously attached to the back surface of the inorganic flat board, and a sheet waterproof material is laid on the plastic. It can be attached to a foam board. 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 sheet waterproof material attached to the plastic foam plate material is a synthetic fiber non-woven fabric, and in the present invention, a butyl rubber type, a vinyl chloride resin type, E. V. A type, rubber asphalt type, E. P. Any of T-butyl rubber type, nylon type and the like can be used.

Adhesives used for the plastic foam plate material and the sheet waterproof material and the sheet waterproof material and the non-combustible inorganic waterproof sheet have elasticity and are epoxy modified rubber type latex type, rubber type latex type, vinyl acetate resin type emulsion type. , Vinyl copolymer emulsion type and the like can be used. Preferably, it is an epoxy-modified rubber-based latex type.

The flat plate or the plastic foam plate material having a water gradient on the back surface is not particularly limited as long as it can be extruded or bead-molded, and more preferably polystyrene, vinyl chloride, polyurethane, phenol, polyisocyanurate or the like. Is. The water gradient to be applied to the back surface is about 1/50 to 1/200, and the direction of the gradient can be arbitrarily designed according to the shape of the waterproof construction surface such as the horizontal direction, the vertical direction, the diagonal direction of the plate material, or both directions from the center of the plate material. The thickness of the plastic foam plate material is in the range of 10 to 50 mm, more preferably 15 to 40 mm.

The sealing material for sealing the joints between the non-combustible inorganic waterproof boards 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
The component form and the two-part modified silicone-based sealing material are preferred. More preferably, it is a two-component modified silicone-based sealing material.

When the sealing material is filled in the joint portion of the non-combustible inorganic waterproof board and the waterproof coating layer is formed on the upper surface thereof, the waterproof coating layer is preferably a non-combustible waterproof material equivalent to the base material applied to the front and back surfaces and the end surfaces of the inorganic flat plate. . The end of the non-combustible inorganic waterproof plate with the end of the inorganic flat plate cut inward has a reverse V
Since the sealing material is not exposed to the outside because the seal is filled in the letter-shaped part, it is possible to maintain sufficient weather resistance and durability without forming a waterproof coating layer on this upper surface, but it is more complete. It is better to form a waterproof coating layer to improve the waterproof performance.

[0027]

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

Example 1 1/10 on the back surface on a plywood substrate
A 0.16 mm thick sheet waterproofing material ("Tyvek" manufactured by Asahi DuPont) is attached to the surface of a 30 mm thick polystyrene foam plate material with a gradient of 0, and 11 mm thick slag plaster board front and back surfaces and A non-combustible inorganic waterproof plate was applied by coating and covering the six end faces with a non-combustible waterproof material equivalent to a base material (“Reball Mighty” manufactured by Toyo Exterior Co., Ltd.) made of a synthetic rubber acrylic resin emulsion. The dimensions of the noncombustible inorganic waterproof board are 900 × 900 × 11 mm, and the polystyrene foam board material is 900 × 900 × 30 mm. The adhesives used here were all epoxy modified rubber-based latex type (“Structbond E-90” manufactured by Mitsui Toatsu Chemicals, Inc.).
0 ").

A modified silicone-based sealing material ("HIBON 2000" manufactured by Hitachi Chemical Polymer Co., Ltd.) was filled in the gap between the joints of the noncombustible inorganic waterproof board. On the upper surface of the filled sealing material, a non-combustible waterproof material equivalent to a base material (“Reball Mighty” manufactured by Toyo Exterior (own)) made of synthetic rubber acrylic resin emulsion was applied to form a waterproof coating layer. FIG. 1 is a sectional view of the first embodiment.

Example 2 As in Example 1, a 0.16 mm-thick sheet waterproof material was attached to the surface of a 30 mm-thick polystyrene foam plate material having a 1/100 gradient on the plywood substrate, and 11 mm was placed on the upper surface thereof. A thick slag gypsum board was cut at the inside to make an incombustible inorganic waterproof board, which was attached so that the end joint portion had an inverted V shape. The sheet waterproof material, the waterproof coating material, the adhesive and the like are all the same as those in the first embodiment.

The reverse V-shaped portion is filled with a sealing material,
A non-combustible waterproof coating material similar to that in Example 1 was applied to the upper surface of the inverted V shape to form a waterproof coating layer. FIG. 2 is a sectional view of the second embodiment.

[0032]

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 sectional view of a first embodiment.

FIG. 2 is a sectional view of a second embodiment.

[Explanation of symbols]

 1. Incombustible inorganic waterproof board 2. Plastic foam board 3. Seat waterproof material 4. Adhesive 5. Plywood 6. Sealant 7. Waterproof coating layer 8. Inverted V-shaped part

Claims (3)

[Claims] 1. A non-combustible inorganic waterproof plate in which a sheet waterproof material is adhered to the surface of a plastic foam plate material and a non-combustible waterproof coating layer is formed on the upper and lower surfaces of the sheet waterproof material and the six surfaces at the end and the back surface of the inorganic flat plate. A waterproofing method characterized in that a waterproof coating layer is formed on the sealing material by filling the sealing material at the end joints of the non-combustible inorganic waterproof board. 2. The waterproof method according to claim 1, wherein a water gradient is provided on the back surface of the plastic foam plate material. 3. The non-combustible inorganic waterproof plate is manufactured by cutting the end of the inorganic flat plate inward, and the inverted V-shaped portion of the end joint is filled with a sealing material.
The waterproof method described.