JPH0438862B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention pertains) The present invention relates to a method for filling and repairing sleeve holes in piping work for buildings.

(Prior Art) It is a well-known fact that in public buildings, structures, and housing complexes such as condominiums, high-rise construction methods and earthquake-resistant construction methods are nearly perfect, using rational construction methods and computer-aided structural calculations.

However, water supply and drainage sanitary construction, heating and cooling construction,
The reality is that pre-modern methods are still being used to fill in the holes in the pipe sleeves leading to each room on each floor after electrical, gas, and hot water supply and ventilation work has been completed. Therefore, due to defects or inadequacies in filling the sleeve holes, not only water leakage and noise problems to the upper and lower floors and adjacent rooms, but also serious accidents such as the spread of gas poisoning accidents and the spread of fire often occur, causing social anxiety. There is.

Conventionally, the method used to fill the sleeve hole is to place a plywood board on the bottom surface, support it from below with taruki, or fasten it with clips, and then pour mortar into the sleeve hole.

An example of this conventional method is shown in FIG. In the figure, 31 is a slab, 32 is a sleeve hole drilled in the slab, and 33 is a pipe. This sleeve hole 3
2, a donut plate 34 made by hollowing out a donut shape from a plywood plate is cut in one place and the piping 33 is filled in.
Insert it into the slot and attach it tightly to the bottom surface of the slab 31 using the taruki 35. In this manner, the mortar 36 is poured into the sleeve hole 32 and solidified.

However, this construction method is extremely incomplete in terms of both the time and effort required for construction and the finish of filling holes, as described below. First, since the inner circle of the donut plate 34 that matches the diameter of the pipe 33 is created using a saw, a gap between the donut plate 34 and the pipe 33 is inevitably created. Moreover, it takes a considerable amount of time just to make this donut plate 34. Furthermore, it is necessary to press the donut plate 34 onto the bottom surface of the slab 31 with the taraki 35 one by one, making it difficult to completely adhere the donut plate to the slab, and it is also necessary to remove the donut plate after the mortar has solidified. , it became a very tedious task.

Furthermore, the mortar 36 is inserted into the sleeve hole 32.
When poured into the inner circle of the donut plate 34 and the pipe 3
3. A portion of the donut plate 34 and the moisture 36b, 36a leak out from the gap between the bottom surface of the slab 31 and the mortar in the hole 32 becomes non-uniform. Since construction cannot be carried out without hardened mortar, there are many cases where the setting is incomplete, and water leaks between each floor and room can occur without being completely sealed.
This will allow gas leaks, etc.

In addition, Utility Model Publication No. 48-575 describes a panel for repairing piping holes, in which a pair of mating plates is provided with a tube attachment section, and the panel is fixed to the piping with a fastener equipped with a tightening piece. Disclosed. However, since this method simply places the panel against the lower surface of the sleeve hole, there is a limit to the close contact with the lower surface of the sleeve hole and the sealing performance of the hole. Another problem was that if the diameter of the pipes were even slightly different, the fittings would not fit and could not be used.

(Problems to be Solved by the Invention) The present invention has been made to overcome the drawbacks of the conventional hole-filling method.

(Structure of the Invention) That is, the present invention uses a repair auxiliary material consisting of a bendable sheet having a waterproof adhesive layer on one side and having a hole for pipe penetration and adhesion approximately in the center.
A feature of this method is that the sheet is passed through the pipe through-hole and this sheet is adhered to one side of the sleeve hole and the outer periphery of the pipe to close one of the sleeve holes of the pipe, and then mortar is poured into the sleeve hole and allowed to solidify. This provides a method for filling and repairing sleeve holes.

(Example) Next, the present invention will be described according to an illustrated example.

FIG. 1 is a vertical cross-sectional view of a slab showing the construction state according to the method of the present invention, in which 11 is the slab, 12 is its sleeve hole, 13 is a gas penetrating the upper and lower floors,
This is plumbing for water, electricity, etc. Reference numeral 14 indicates mortar poured to fill the sleeve hole 12, and reference numeral 15 indicates an auxiliary material for filling and repairing the hole to close the bottom of the sleeve hole 12. The auxiliary material 15 is bonded to the lower surface of the slab 11 and the circumferential surface of the pipe 13 by a waterproof pressure-sensitive strong adhesive layer 17 on one side thereof. This auxiliary material 15
The adhesive layer 17 is provided on a bendable base material in which, for example, butyl rubber 18 and an aluminum sheet (foil) 16 are laminated. Reference numeral 19 indicates a leg portion of the auxiliary material, which is a portion to be bonded to the pipe 13.

FIG. 2 shows a perspective view of the auxiliary material 15 used in FIG. 1. In the figure, reference numeral 20 denotes a collar portion that is adhered to the lower surface of the slab 11. 21 is the leg sealing part 19 and the collar part 21
22 is the cut made across the pipe 13.
It is a hole for inserting. This hole 22 is slightly larger than the diameter of the pipe 13, but has approximately the same diameter. The holes may have the same diameter on the top and bottom, or may be shaped like a latch, with one of the holes being larger. Other than this, the same reference numerals as in FIG. 1 indicate the same parts as in FIG. 1. Although not shown, it goes without saying that a release sheet is pasted on the pressure-sensitive adhesive layer 17 of this auxiliary material 15 before use.

In the present invention, any material may be used as the base material as long as it is bendable. In addition to butyl rubber and aluminum sheets as described above, composite materials of aluminum sheets and other sheet materials such as paper, cloth, and plastic can be used. Further, only a sheet material such as butyl rubber may be used without using the aluminum sheet, but it is preferable to laminate a metal foil such as an aluminum sheet for fireproofing. Further, an asbestos sheet may be used instead of the aluminum sheet, and this sheet may be used alone without being laminated.

Furthermore, the method of forming the pressure-sensitive adhesive layer is not particularly limited.
In addition to direct coating, it may also be carried out by adhering a double-sided tape having a pressure-sensitive adhesive layer onto the substrate.

The type of adhesive for the pressure-sensitive adhesive layer with anti-corrosion properties may be any conventional adhesive that also adheres to concrete and the like. Also, waterproof means that the mortar will not peel off due to water.
Examples include rubber adhesives such as ethryl rubber and chloroprene rubber, and vinyl adhesives such as vinyl acetate.

Note that the auxiliary material for filling and repairing holes is not limited to that shown in FIGS. It also includes a method in which a hole-equivalent portion is formed, the sheet is bent in the hole-equivalent portion in use, and after passing the pipe through this portion, this portion is bonded to the pipe at the same time as the slab is bonded.

In this case, the following embodiments may also be adopted.

A finger-sized through hole is provided in the center of the repair auxiliary material, and a strip of a predetermined thickness (approximately 4 to 10 mm in width) is formed on the surface of the lower aluminum sheet along the edge of the portion corresponding to the hole. Colored circles can be printed to make it easier to center the piping and confirm its position during construction. Further, it is preferable that the edge of the band of this band-shaped colored circle is a press line with pressure applied, so that the inner press line can facilitate the work when folding and opening the portion corresponding to the hole (folding becomes easier).

As mentioned above, the release sheet is attached on top of the pressure-sensitive adhesive layer, and the release sheet is finished so as to be divided into two sheets from the center. In this way, it would be difficult to work if the attached part was removed all at once, but since it can be removed in two steps, it can be done smoothly even in narrow spaces such as the corners of the room.

The inner circle (corresponding to the hole) of the printed band-shaped colored circle may be set to match the outer diameter of the thickest material of the piping material (usually asbestos pipe). This way, even if the material of the piping changes, the piping will always fit inside the inner circle.

The structure of the repair auxiliary material other than the above-mentioned features is similar to that commonly used in adhesive tapes.

In the construction method of the present invention, first, the auxiliary material 15 from which the release sheet has been peeled off is spread out at the cut 21 to cover the pipe 13 that penetrates the slab 11, and the adhesive layer 17 at the collar 20 is applied to the bottom surface of the slab 11. Glue to. Further, the adhesive layer 17 on the inner surface of the leg portion 19 is bonded to the pipe 13. In this way, the bottom of the sleeve hole 12 of the slab 11 is completely closed.

In this way, mortar 1 is placed in the sleeve hole 12.
By pouring 4, the mortar will not leak from the bottom and will solidify perfectly.

(Effects of the Invention) As described above, according to the method of the present invention, the hole filling repair auxiliary material 15 has good bendability, completely adheres to the concrete surface of the slab, and does not allow moisture to pass through, so that complete setting of the mortar cannot be achieved. It will be done. Additionally, if aluminum, asbestos, or other materials are used as the base material, fire prevention standards require that auxiliary plywood materials be removed after construction is completed, but this is not necessary, and the work process is significantly streamlined. Further, in the present invention, since the repair auxiliary material has a cut for introducing into the pipe, attachment to the pipe is very efficient.

Therefore, according to the method of the present invention, it is possible to completely close the sleeve hole of the pipe penetrating the slab,
This prevents gas poisoning from upper and lower floors or adjacent rooms, water leakage, fire spread, and noise caused by incomplete sleeve hole repair (filling) and defects. The method of the present invention can also be applied to filling holes in walls.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the method of the present invention, Fig. 2 is a perspective view of an example of the auxiliary material for hole filling repair used in the method of the present invention, and Fig. 3 is an explanatory diagram of the conventional hole filling method. It is. Explanation of symbols, 11... Slab, 12... Sleeve hole, 13... Piping, 14... Mortar, 15...
...Auxiliary material for repair, 16...Aluminum sheet,
17...Waterproof pressure-sensitive adhesive layer, 18...Butyl rubber, 19...Leg portion, 20...Brim portion, 21... Cut.

Claims (1)

[Claims] 1 Using a repair aid consisting of a bendable sheet with a waterproof adhesive layer on one side and a hole for pipe penetration and adhesion approximately in the center, pass the pipe through the pipe penetration hole, and insert this sheet into the sleeve hole. A method for filling and repairing a sleeve hole, which is characterized by adhering the sleeve hole to one side of the pipe and the outer periphery of the pipe to close one of the sleeve holes of the pipe, and then pouring mortar into the sleeve hole and allowing it to solidify.