JPS5836705B2 - Waterproofing method for structures using waterproof sheets and insulation waterproofing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waterproofing method for a structure using a waterproof sheet and a heat insulation waterproofing method.

Conventionally, a so-called insulation method is known as a waterproofing method using this type of waterproof sheet.

This insulation method is used to connect only the entire periphery of the waterproof sheet and other minimally necessary parts to the surface to be waterproofed, when a waterproof sheet is installed on a surface that should be waterproof, such as a flat roof of a structure such as a building. This is a waterproofing method in which most of the remaining part is left as is.

In other words, most of the waterproof sheet is not bonded to the surface to be waterproofed, but is insulated from the surface to be waterproofed, hence the name of the insulation method.

This insulation construction method allows work to be carried out extremely quickly and reliably without being affected by the surface condition of the structure.Furthermore, even if cracks occur in the structure after construction, the waterproof sheet will remain intact. Since most of the waterproofing is not attached to the surface to be waterproofed, it is known as an extremely superior waterproofing method in that there is no risk of cracks occurring in the waterproof sheet.

By the way, the following method has conventionally been used to bond a waterproof sheet to the surface of a structure to be waterproofed.

That is, as shown in FIG. 1, first, the peripheral joint piece 4 having a sheet joint surface is fixed to the periphery of the surface to be waterproofed of the structure 3, and the sheet joint surface is attached to the required internal part of the surface to be waterproofed. Then, while spreading the waterproof sheet 1 wound into a roll over the surface to be waterproofed, the peripheral joint pieces 4 or the intermediate joint pieces 6, 7 are sequentially joined together. The method used was to apply adhesive to the surface and then layer the rewound waterproof sheet 1 on top of it.

However, the conventional method described above has the disadvantage that the unwinding of the waterproof sheet 1 and the application of adhesive to the joint pieces 4.6.7 must be performed in parallel, making the work difficult. If the operator is not an expert, there is a risk that the waterproof sheet 1 may be joined to the joining pieces 4, 6.7 while being wrinkled.

On the other hand, while unwinding the waterproof sheet 1, connect pieces 4.
6.7, the waterproof sheet 1 may be joined to the joint piece 4.6.7 while stress is generated in the stretched waterproof sheet 1. If internal stress is generated in the waterproof sheet 1, the waterproof sheet 1 will not be able to expand and contract freely due to temperature changes, resulting in a disadvantage that the waterproof sheet 1 will deteriorate significantly.

Additionally, in the past, insulation material was first laid on the surface of the structure that should be insulated and waterproofed, and then a waterproof sheet was laid over this insulation material. After laying the insulation material, the peripheral edge of this insulation material is fixed with a peripheral edge joint piece having a sheet joining surface,
A number of intermediate joining pieces having sheet joining surfaces are fixed from above the insulation material to the required internal parts of the surface to be insulated and waterproofed, and then a waterproof sheet wound into a roll is placed on the surface of the insulation material in the same way as in the above case. The method used is to apply adhesive to the sheet joining surfaces of the peripheral joint piece and the middle joint piece one by one while expanding, and then overlay the unwound waterproof sheet on top of it. In addition to having exactly the same drawbacks as the above-mentioned case, the heat insulating material also deteriorates quickly due to the early deterioration of the tarpaulin sheet, and the heat insulation and waterproofing effect is significantly impaired.

The purpose of this invention is to eliminate the above-mentioned drawbacks, to make it possible to install a tarpaulin sheet with a very simple operation, to prevent wrinkles from forming on the tarpaulin sheet, and to reduce internal stress when the tarpaulin sheet is stretched. The purpose of the present invention is to provide a waterproofing method using a very convenient tarpaulin sheet and an insulation waterproofing method that does not leave any residue.

The method of the first invention fixes a peripheral joint piece having a sheet joint surface to the periphery of a surface to be waterproofed of a structure, and fixes a peripheral joint piece having a sheet joint surface to a required part inside the surface to be waterproofed. a step of fixing the intermediate joint piece; a step of covering the surface of the structure to be waterproofed with a waterproof sheet and joining the entire periphery of the waterproof sheet to the peripheral joint piece;
An adhesive syringe is provided, which includes an adhesive accommodating part and a needle attached to the tip of the syringe in communication with each other, and is configured such that the adhesive is forced out from the tip of the needle by applying pressure to the adhesive in the accommodating part. Then, pierce the needle of the adhesive syringe into the part of the waterproof sheet that overlaps each intermediate joint piece, and inject the adhesive in the adhesive syringe between the waterproof sheet and the intermediate joint piece. A structure using a waterproof sheet, which consists of the process of pressing the injected adhesive from above the waterproof sheet, spreading it along the sheet joint surface of the intermediate joint piece, and joining the waterproof sheet to the intermediate joint piece with this adhesive. The main points are waterproofing methods.

Further, the method of the second invention of the present invention is a method in which a heat insulating material is laid on the surface of the structure to be heat-insulated and waterproof, and then a waterproof sheet is stretched over the heat insulating material in the same manner as in the case of the first invention. This involves the process of laying a heat insulating material on the surface of the structure to be heat-insulated and waterproof, and fixing the periphery of the heat-insulating material to the periphery of the surface to be heat-insulated and waterproof using a periphery joint piece having a sheet joint surface. , in the internal necessary parts of the surface to be insulated and waterproofed,
a step of fixing a number of intermediate joining pieces having sheet joining surfaces from above the heat insulating material; a step of covering the surface of the heat insulating material with a waterproof sheet and joining the entire periphery of the waterproof sheet to the peripheral joining piece; The gist of this invention is an insulation waterproofing method using a waterproof sheet, which comprises a step of joining the waterproof sheet to an intermediate joint piece using an adhesive injector.

In the above, the joint piece is made by pasting a film with the same effectiveness as a waterproof sheet on a main body made of a steel plate with an adhesive.

The shape of the joint piece is arbitrary, and it may be like a narrow band.
Further, it may be rectangular or other shape, and may be L-shaped in cross section depending on the mounting location.

If the surface of the structure to be waterproofed or insulated or waterproofed is concrete, the joint pieces are usually fixed after the concrete has been poured, for example by means of curl plugs.

In addition, in the case of the above-mentioned first invention, it may be buried in concrete.

In other words, the sheet joint surfaces of the joint pieces are temporarily fixed to the specified locations on the panel for concrete pouring, the panel is framed with the joint piece facing inward, concrete is then poured inside the panel, and the concrete is solidified. After the panel is tied, the panel is removed.

Thermoplastic synthetic resins are used as the waterproof sheet, and among them, polyvinyl chloride is the most common.

A waterproof sheet unit is wound into a roll and usually has a length of 15 to 20 m and a width of 1.5 to 2.0 m.

One large waterproof sheet is completed by sequentially laying the waterproof sheet units on the surface of the structure to be waterproofed and gluing adjacent parts together.

As the adhesive, a solvent such as tetrahydrofuran (TH11'), which can weld the waterproof sheet and the film of the joining piece, is used.

Next, embodiments of the invention will be described based on the drawings.

2 and 3 show an embodiment of the first aspect of the present invention, and show a waterproofing method in which a 7K sheet 11 is stretched over a flat roof 13. FIG.

In the figure, a flat roof 13 is provided with a rising wall 12 at its periphery.

In this case, the upper surface of the flat roof 13, the inner surface of the rising wall 12, and the upper end surface thereof are the surfaces A to be waterproofed.

In the above, first, the peripheral joint piece 14 having an L-shaped cross section is attached to the curl plug 1 around the outer peripheral part of the upper end of the rising wall 12.
Install using 5.

At the same time, the intermediate joint piece 16 having an L-shaped cross section is attached to the flat roof 1.
3 and the rising wall 12 using a curl plug 15.

Further, flat plate-shaped intermediate joining pieces 17 are attached to the flat roof 13 at predetermined intervals using curl plugs 15.

These joint pieces 14, 16, 17 are attached to a main body 18 made of steel plate.
A film 19 made of polyvinyl chloride, which is the same as the waterproof sheet 11 made of polyvinyl chloride, is attached with adhesive,
The upper surface of this film 19 serves as a sheet joining surface 19a.

Thereafter, the waterproof sheet 11 is spread and covered over the top surface of the flat roof 13, the inner surface and the upper end surface of the rising wall 12, so as not to wrinkle the waterproof sheet 11.

Thereafter, the periphery of the waterproof sheet 11 is joined to the periphery joining piece 14 using an adhesive.

Next, the adhesive containing bottomed cylinder 28, the needle 21 attached in communication with the bottom wall 29 at the tip thereof, and the cylinder 2
An adhesive injector 20 consisting of a piston 30 that is press-fitted from the opening at the other end of the waterproof sheet 11 in an airtight state to pressurize the adhesive inside is prepared. Penetrate the needle 21 of the adhesive syringe 20 into the overlapped portion, inject the adhesive in the adhesive syringe 20 between the waterproof sheet 11 and the intermediate joining piece 16, 17, and remove the injected adhesive. Press the agent from above the waterproof sheet 11 and attach the intermediate joint piece 16.1.
Spread it out along the top surface of 7.

In this way, the waterproof sheet 11 is joined to the intermediate joint pieces 16, 17 by adhesive.

FIG. 4 shows an embodiment of the second invention of the present invention.
After laying the insulation material 22 on the flat roof 13, waterproof sheet 1
This shows the insulation and waterproofing method of installing 1.

In the figure, first, the surface B of the flat roof 13 to be insulated and waterproofed is
A heat insulating material 22 is laid on the surface B to be heat insulated and waterproof, and the periphery of the heat insulating material 22 is fixed to the periphery of the surface B to be heat insulated and waterproofed by a peripheral edge joint piece (not shown) having a sheet bonding surface. A large number of intermediate joining pieces 17 having sheet joining surfaces 19a are fixed to the required internal parts from above the heat insulating material 22, and then the waterproof sheet 11 is covered over the surface of the heat insulating material 22, and the waterproof sheet 11 is The entire periphery of is joined to the periphery joint piece.

Next, the waterproof sheet 11 is joined to the intermediate joining piece 17 with adhesive using the adhesive injector 20 in the embodiment of the first invention.

Note that the end face of the heat insulating material 22 may be appropriately sealed using a conventional method.

For example, if there is a rising wall 12 at the periphery of the flat roof 13 as shown in FIG.
Since it is necessary to cover only the upper surface inside the rising wall 12, the periphery of the waterproof sheet 11 is aligned with the periphery of the heat insulating material 22, so that the periphery of the waterproof sheet 11 and the inner surface of the rising wall 12 are aligned. The corners of the waterproof sheets 1 and 11 may be filled with a putty-like sealing material as in the past for sealing, or the peripheries of the waterproof sheets 1 and 11 may be extended beyond the periphery of the heat insulating material 22 to form a seal. The part near the periphery of the sheet 11 is joined to the periphery joint piece that fixes the periphery of the heat insulating material 22, and the periphery of the extended part of the waterproof sheet 11 is attached as shown in FIG. The upper surface of the rising wall 12 may be joined to the joining piece.

In addition, in the above-mentioned example, the case where this invention was applied to the flat roof 13 was shown, but the method of this invention can be similarly applied to the case where required surfaces of other structures are waterproofed and insulated and waterproofed. It is something.

As described above, the present invention is applicable to the case where the waterproof sheet 11 is stretched on the surface of the structure 13, and the case where the waterproof sheet 11 is stretched after the heat insulating material 22 is laid on the surface of the structure. In either case, the waterproof sheet 11 can be stretched with a very simple operation, and the waterproof sheet 11 is not wrinkled, and internal stress is applied to the waterproof sheet 11 when the waterproof sheet 11 is stretched. There is no possibility that there will be any residue.

Therefore, since the waterproof sheet 11 can freely expand and contract due to temperature changes, the waterproof sheet 11 is difficult to deteriorate and can withstand long-term use.

Since the waterproof sheet 11 does not easily deteriorate in this way, even when the heat insulating material 22 is provided inside it, the heat insulating material 22 does not easily deteriorate, and therefore the heat insulating and waterproofing effect can be maintained for a long period of time. It has the effect of eliminating the drawbacks of limb techniques.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional view of a flat roof using the conventional waterproofing method.
Fig. 2 is a vertical cross-sectional view of a flat roof during the implementation of the method of the first invention of this invention, Fig. 3 is an enlarged view of the main part of Fig. 2, and Fig. 4 is a method of the second invention of this invention. This is a vertical cross-sectional view of the main part of a flat roof in the middle of the process. 11... Waterproof sheet, 13... Flat roof, 14... Peripheral joint piece, 16.17...
・Intermediate joint piece, 19... Film, 19a...
... Sheet joint surface, 20 ... Adhesive syringe 11, 21 ... Needle, 22 ... Heat insulation material,
2nd day: Adhesive storage cylinder with bottom (adhesive storage section)
, 29... bottom wall, 30... piston,
A...Surface to be waterproofed, B...Surface to be heat-insulated and waterproofed.

Claims (1)

[Claims] 1. A peripheral joint piece 14 having a sheet joint surface 19a is fixed to the peripheral edge of the surface A to be waterproofed of the structure 13, and
A sheet joining surface 19a is attached to the required internal part of the surface A to be waterproofed.
A process of fixing a large number of intermediate joint pieces 16 and 17 having and a step of joining the adhesive accommodating part 28 and the needle 21 attached to the tip thereof in a communicating manner, and applying pressure to the adhesive in the accommodating part 28, the adhesive is pushed out from the tip of the needle 21. An adhesive syringe 20 is prepared, and each intermediate joint piece 16 of the waterproof sheet 11 is prepared.
．． Insert the needle 21 of the adhesive syringe 20 into the area overlapping the adhesive syringe 17.
and inject the adhesive in the adhesive injector 20 between the waterproof sheet 11 and the intermediate joint piece 16.17,
The injected adhesive is pressed from above the waterproof sheet 11 and spread along the sheet joint surface 19a of the intermediate joint piece 16.17, and the waterproof sheet 11 is attached to the intermediate adhesive piece 16.17 by this adhesive. A waterproofing method for structures using a waterproofing sheet 1, which consists of a process of joining a waterproofing sheet. 2. A step of laying the heat insulating material 22 on the surface B of the structure 13 that should be heat-insulated and waterproof, and a step of laying the heat-insulating material 22 on the periphery of the surface B that should be heat-insulated and waterproof.
A number of intermediate joint pieces 1 each having a sheet joint surface 19a are fixed at the peripheral edge portions of the sheets 1 and 2 by a peripheral joint piece having a sheet joint surface, and a number of intermediate joint pieces 1 having a sheet joint surface 19a are fixed at necessary internal parts of the surface B to be heat-insulated and waterproof.
7 from above the heat insulating material 22, covering the surface of the heat insulating material 22 with the waterproof sheet 11, joining the entire periphery of the waterproof sheet 11 to the peripheral joint piece, and accommodating the adhesive. part 28 and the needle 2 attached to the tip thereof in a communicating manner.
An adhesive syringe 20 is prepared, which is equipped with a waterproof sheet 11 and is adapted to push out the adhesive from the tip of the needle 21 by applying pressure to the adhesive in the housing part 28.
The needle 21 of the adhesive syringe 20 is pierced through the portion overlapping each intermediate joint piece 17, and the adhesive syringe 20
Inject the adhesive between the waterproof sheet 11 and the intermediate joint piece 17, press the injected adhesive from above the waterproof sheet 11, and apply it along the sheet joint surface 19a of the intermediate joint piece 17. A method for insulation and waterproofing of a structure using a waterproof sheet, which comprises the steps of: spreading the waterproof sheet, and then joining the waterproof sheet 11 to the intermediate joint piece 17 using the adhesive.