JP6947952B1 - Gap blocker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply to a plurality of types of pipes having different diameters, and to make a solidified mortar surface filled in a gap between a pipe and a floor slab substantially flat, so that the filled state of the mortar can be visually checked. To provide a gap closing tool that forms a flat plate and is easy to check and store and manage. SOLUTION: A gap closing tool 1 for supporting a fluid mortar 203 that closes a gap between a pipe 100 penetrating a floor slab and a floor slab 200 is provided with a shape maintaining layer 10 made of a flexible resin layer and an adhesive layer. It was made into a flat plate body composed of 20. The flat plate body is provided with a hole 31 for mounting the flat plate body on a pipe and a plurality of arcuate elongated holes 40 evenly arranged so as to form concentric circles with the hole, and the flat plate body is narrowed in the plane direction. It is attached to the floor slab in a substantially flat state, and the inner edge 34 of the strip-shaped portion 42 is brought into close contact with the outer periphery of the pipe to eliminate leakage of mortar. Made applicable to the types of piping. [Selection diagram] Fig. 1

Description

The present invention can be applied to a plurality of types of pipes having different diameters, and can make the mortar surface solidified by filling the gap between the pipe and the floor slab substantially flat, so that the mortar is filled in a state of being filled. It relates to a gap closing tool that forms a flat plate and is easy to visually check and store and manage.

Specifically, it has a circular cross-sectional hole in the center of the flat plate, and the flat plate can be narrowed while maintaining a flat surface so that the inner edge of the hole is in contact with the pipe, and after the mortar is solidified. The present invention relates to an adhesive sheet for filling a floor hole, which has a removable adhesive layer in which the adhesive does not easily remain even when the flat plate is peeled off.

Pipes such as water supply pipes, drain pipes, heat medium supply pipes for heating and cooling, and power supply pipes penetrate the floor slab of the building and are inside the pipe penetration holes formed at the stage of building frame construction. It is connected to the upper and lower floors of the building. Since the hole has a diameter larger than the outer diameter of the pipe so that it can be inserted even if there is a construction error, there is a gap between the hole and the pipe.

The gaps between the holes in the deck and the pipes are filled with mortar so that fires on the lower floors do not affect the upper floors. In the past, a pair of plywood with semicircular holes surrounding the pipe was applied from the left and right sides of the pipe to close the bottom of the gap and fill it with mortar. However, since it is difficult to completely bring the side edges of the plywood into close contact with the pipes, mortar leaks from the places where the plywood and the pipes are not in close contact with each other, and it is easy to stain the lower floors.

In order to make a high quality building, it is required to be able to visually confirm that the mortar is densely filled. Further, the lower surface of the floor slab may be used as a finished surface, and for the purpose of appearance, the bottom surface of the mortar filled in the gap around the pipe is required to be flat. If the mortar is not densely filled, or if protrusions such as burrs are protruding from the mortar surface, the protruding mortar is repaired so that the lower surface of the deck is flat.

Patent Document 1 discloses a technique for blocking noise leaking from a gap around a pipe penetrating a section of a building such as a wall or a floor. The sound insulation sheet that blocks noise is a flat plate body, and one surface is an adhesive surface, which is substantially similar to the cross-sectional shape of the pipe.

In the sound insulation sheet, the circumference of the hole through which the pipe is passed is divided into a plurality of radial parts, the radial part is bent so as to penetrate the pipe, and then the tip of the bent radial part is adhered to the pipe, or the pipe is further formed. It is said that the band is wrapped around the tip of the pipe and the gap around the pipe is closed. However, when this technology is applied to the floor slab to make it a gap closing member that supports a fluid mortar that closes the gap between the pipe and the surrounding floor slab, the shape of the mortar packed around the pipe becomes mortar-shaped. There is a problem that the lower surface of the floor slab is not flat due to the protruding shape.

Patent Document 2 discloses a technique for providing an opening closing member capable of safely and easily performing opening closing work around a pipe on a scaffold even if the pipe diameters are different. It is disclosed. In the technique described in Patent Document 2, the opening closing member formed as a flat plate is divided into two, and each pipe corresponding portion formed as a radial portion in contact with the circumference of the hole is bent so as to match the pipe diameter. Each is moved in the horizontal direction, and the overlapping margins are overlapped and fixed.

According to this technology, the structure is simple, and it is said that the gap between the floor slab and the pipe can be closed easily and surely. However, even with this technology, it is necessary to cut the flat plate at the perforated cuts arranged radially and bend the pipe corresponding part to fit the outer diameter of the pipe so as to adapt to the diameter of the pipe. Met.

Even if the opening closing members divided into two are horizontally moved and stacked, there is a problem that it takes time and effort to cut and bend the opening closing members at the perforations to obtain a piping corresponding portion suitable for the outer diameter of the piping. Otherwise, the shape of the mortar packed around the pipe tends to protrude like a mortar, or the mortar paste tends to leak from the gaps in the perforated cuts that have been cut too much, and the mortar paste tends to leak to the underside of the floor slab. There is a problem that burr-like protrusions are easily generated.

Patent Document 3 discloses a technique for shielding a gap between a pipe, a duct or the like and an outer wall, a structural plywood, a floor or the like. In the technique described in Patent Document 3, one slit for cutting the cylinder portion and the skirt portion is formed in the airtight member including the cylinder portion and the skirt portion connected to the lower edge of the cylinder portion. At the same time, it is an airtight member provided with fold-shaped protrusions for adjusting the dimensions of the skirt.

The gap is closed by fixing the inner surface of the cylinder to pipes, ducts, etc., and fixing the lower surface of the skirt to the outer wall, structural plywood, floor, etc. If the difference between the outer diameter of the pipe or duct and the inner diameter of the cylinder is large, attach the inner surface of the cylinder to the pipe or duct, attach the lower surface of the skirt to the outer wall, structural plywood, floor, etc. It is said that the airtightness is not impaired by overlapping and pasting the remaining parts of the part and the skirt part. However, since the airtight member described in Patent Document 3 has a shape in which a tubular portion is erected on a flat skirt portion and is bulky, there is a problem that it is not easy to stack and manage a large number of the airtight member.

Japanese Unexamined Patent Publication No. 2004-84461 Japanese Unexamined Patent Publication No. 9-280426 Japanese Unexamined Patent Publication No. 2003-294173

The problem to be solved by the present invention is that it can be applied to a plurality of types of pipes having different diameters, there is no leakage of the mortar to be filled, the solidified mortar surface is made substantially flat, and the filled state of the mortar is visually checked. It is to provide a gap closing tool forming a flat plate that is easy to check, store and manage.

The first invention of the present invention is a gap closing tool that supports a fluid mortar that closes a gap between a pipe having a circular cross section penetrating a floor slab and a surrounding floor slab, and adheres to a shape-maintaining layer. A flat plate body composed of layers, the shape maintaining layer is composed of a resin layer having flexibility and a predetermined thickness, and the flat plate body has a circular cross-sectional shape hole and a plurality of arcuate elongated holes. The hole has a diameter equal to or larger than the outer diameter of the pipe, has a mounting area for the pipe outward from the outer edge thereof, and a plurality of the arcuate elongated holes are located in a region excluding the mounting area. , It is provided evenly so as to form a concentric circle with the hole, a strip-shaped portion having a predetermined width is formed between the hole and the arc-shaped elongated hole, and the flat plate body is mounted on the pipe through the position of the mounting region. , The inner edge of the strip-shaped portion is brought into close contact with the outer periphery of the pipe, and is adhered to the floor slab by the adhesive layer, and the fluid mortar is flattened along the floor slab. It is characterized by being carried.

The shape-maintaining layer forming the flat plate is made of a resin layer having a predetermined thickness as well as being flexible, and even if it is narrowed in the plane direction, a part of the layer does not easily rise, and mortar flows in between the pipe and the floor slab. Even if it is made, the inside of the flat plate is hard to hang down, and a substantially flat state is maintained. The outer diameter of the hole may be equal to or larger than the outer diameter of the pipe so that the inner edge of the hole of the flat plate body is in close contact with the outer circumference of the pipe in a state where the flat plate body is narrowed in the plane direction. Since the arc-shaped elongated holes are evenly arranged around the holes, the width of the band-shaped portion between the holes and the arc-shaped elongated holes is made uniform, and the inner edges of the holes of the flat plate body are narrowed substantially evenly. Is easy to adhere to the outer circumference of the pipe. The number and length of the arcuate elongated holes are not limited, and may be set to a length and number that can easily narrow the flat plate body.

The mounting area of the pipe is a region where the pipe is inserted so as to be held by the gap closing tool. Even if the flat plate is cut in a streak shape in the radial direction up to the outer edge of the flat plate and a cut is made to insert the pipe, the strip or the outside thereof is not separated at the position of the cut. Since the band-shaped part and the outside are integrated at the position of the cut in a state where the band-shaped part is narrowed and brought into close contact with the circumference of the pipe, the adhesive force of the band-shaped part to the deck is intermittent with the band-shaped part. The adhesive force of the outer part of the band-shaped portion that is connected to each other is assisted, and even if an adhesive having a strong adhesive force is not used, a part of the band-shaped portion is not lifted.

The width of the strip-shaped portion may have a width in which the inner edge portion is in close contact with the pipe and the outer portion is adhered to the floor slab, and may be wider than the width of the gap between the pipe and the surrounding floor slab. Not limited. Since the outer flat plate body is intermittently connected to the strip-shaped portion, even if the width of adhesion between the floor slab and the strip-shaped portion is small, it is difficult to peel off from the floor slab during mortar filling. According to the first invention, since the gap closing tool is a flat plate, it is easy to store and manage, and the mortar surface filled and solidified in the gap between the pipe and the floor slab becomes substantially flat. It has no beneficial effect.

In the second aspect of the present invention, in the gap closing tool of the first invention, the mounting region is provided with a streak-shaped dividing means extending in the radial direction, and the dividing means is provided from the hole to the outer edge of the flat plate body. It is characterized in that the pipe is inserted into the hole through the position of the streak-shaped dividing means.

The dividing means may be a display line indicating the dividing position, or may be a notch portion called a perforation, which is provided discontinuously at short intervals so as to be easily separated, or may be cut in advance. When the cut portion is used, it is preferable to make a cut from the adhesive layer to the middle portion of the shape maintaining layer. When a hole for a set pipe diameter is formed, it is preferable to cut it at the position of the dividing means in advance. According to the second invention, the gap closing tool can be safely and easily mounted on the pipe through the position of the dividing means at the position of the mounting region.

According to a third aspect of the present invention, in the gap closing tool of the second invention, the flat plate body includes a streak-shaped fitting means extending in the radial direction along the dividing means, and the position of the fitting means. The flat plate body between the position of the flat plate body and the position of the dividing means is cut off, the length of the outer circumference of the pipe is matched with the length of the inner edge of the adapting means, and the flat plate body is narrowed in the plane direction. It is characterized in that it is adhered flatly to the floor slab so that the flat plates do not overlap.

The adapting means may be a display line indicating the cutting position, or may be a notch portion called a perforation, which is provided discontinuously at short intervals so as to be easily separated. When the cut portion is used, it is preferable to make a cut from the adhesive layer to the middle portion of the shape maintaining layer. The flat plate between the dividing means and the fitting means is cut off, the length of the inner edge of the hole is reduced, and it is possible to handle a pipe having a diameter smaller than that of the set pipe.

For example, in order to make a flat plate body suitable for a pipe having an outer diameter of about 21 cm compatible with a pipe having an outer diameter of about 19 cm, the difference of about 6 cm between the outer circumferences of the two pipes is used as a dividing means and a fitting means. The flat plate body may be cut radially as the separation distance between the holes, and the length of the inner edge of the hole may be reduced.

According to the third invention, it is easy to match the length of the outer circumference of the pipe having a smaller diameter than the set pipe, and the edges of the flat plates can be butted so that the flat plates do not overlap. As a result, the mortar surface that has been solidified by filling the gap between the pipe and the floor slab has an unprecedented advantageous effect of not generating burr-like protrusions or steps.

According to a fourth aspect of the present invention, in the gap closing tool of the first to third inventions, the flat plate body is provided with a hole diameter matching means in which the flat plate body forms a concentric circle with the hole and extends in the circumferential direction, and the outer diameter of the pipe is adjusted. Correspondingly, the flat plate body is cut off at the position of the hole diameter adjusting means, the length of the inner edge of the position of the hole diameter adjusting means is adjusted to the length of the outer circumference of the pipe thicker than the pipe, and the flat plate body is fitted to the pipe. Is characterized by being installed.

In the fourth invention, a hole diameter matching means extending in the circumferential direction is provided. A plurality of hole diameter matching means may be provided. The hole diameter adjusting means may be a display line indicating a position to be cut in order to increase the diameter of the hole, or may be a cut portion provided discontinuously at short intervals so as to be easily separated. By cutting along the hole diameter matching means and enlarging the hole, even if there is a large difference between the diameter of the hole before enlarging and the diameter of the pipe, the gap blocker is adhered flat so that it does not rise from the floor slab. Can be made to. As a result, it can be applied to a plurality of types of pipes having a diameter larger than that of the hole before expansion, and has the effect of being able to be a highly versatile gap closing tool.

According to a fifth aspect of the present invention, in the gap closing tool of the first to fourth inventions, the arcuate elongated hole is formed so that the flat plate body forms a concentric circle with the hole in a region other than the mounting region. A plurality of second arc-shaped elongated holes are provided on the outside, and the space between the edges of the adjacent arc-shaped elongated holes is located at the central portion in the circumferential direction of the second arc-shaped elongated holes, and the arc-shaped elongated holes and the second arc-shaped elongated holes are located. It is characterized in that the space between the arc-shaped elongated hole and the arc-shaped elongated hole is formed as a band-shaped second band-shaped portion having a predetermined width.

A second arc-shaped elongated hole is provided on the outer side of the arc-shaped elongated hole, and the space between the edges of the arc-shaped elongated hole is located at the central portion in the circumferential direction of the second arc-shaped elongated hole. When the band-shaped portion is narrowed, the outer side between the adjacent arc-shaped elongated holes and the edges of the arc-shaped elongated holes is slightly overhanging. This slightly overhanging outer side is located at the center of the second arcuate elongated hole. As a result, even if the flat plate body is large, it is difficult to distort so that only a part of the flat plate body is lifted, the entire flat plate body is easily narrowed, and the entire top surface of the flat plate body is adhered so as not to be peeled off from the floor slab. Can be done.

A sixth aspect of the present invention is characterized in that, in the gap closing tool of the first to fifth inventions, the width of the strip-shaped portion is 50 mm or more and 100 mm or less. Since the width of the strip-shaped portion is 50 mm or more, the gap between the pipe and the floor slab can be closed and the strip can be adhered to the floor slab. Further, since it is 100 mm or less, it can be adhered to the floor slab so that the flat plate body does not rise.

A seventh invention of the present invention is characterized in that, in the gap closing tool of the first to sixth inventions, the shape-maintaining layer is made of a foamed resin having a thickness of 3 mm or more and 10 mm or less. The foamed resin is preferably, but is not limited to, foamed polyethylene or polyurethane foam which is flexible and has excellent durability. According to the seventh invention, the flat plate body can be narrowed in the plane direction so as to have good adhesion to the pipe so that there is no gap, and a substantially flat shape can be maintained, and leakage does not occur during mortar filling.

In the eighth invention of the present invention, in the gap closing tool of the first to seventh inventions, the adhesive strength of the adhesive layer is 5.5 N / 25 mm or more in the 90 degree peeling test, and the adhesive layer and the above. It is characterized in that the adhesive force with the shape-retaining layer is larger than the adhesive force between the adhesive layer and the floor slab. The 90-degree peeling test is a test method specified in "Japanese Industrial Standard K 6854-1 Adhesive-Peeling Adhesive Strength Test Method-Part 1: 90 Degree Peeling". When the adhesive strength of the adhesive layer is 5.5 N / 25 mm or more, the gap closing tool is difficult to peel off when filling the mortar, it is easy to peel off after the mortar is solidified, and the residual area of the adhesive is easily set to 5% after peeling, which is suitable. be. Since the residual area of the adhesive is small, it is easy to visually check the state of the solidified mortar.

-According to the first invention, since the gap closing tool is a flat plate, it is easy to store and manage, and the mortar surface filled and solidified in the gap between the pipe and the floor slab becomes substantially flat. It has an advantageous effect that is not found in Japan.
-According to the second invention, the gap closing tool can be safely and easily mounted on the pipe through the position of the dividing means at the position of the mounting region.
-According to the third invention, the mortar surface filled and solidified in the gap between the pipe and the floor slab has an unprecedented advantageous effect of not generating burr-like protrusions or steps.
-According to the fourth invention, it is possible to apply it to a plurality of types of pipes having a diameter larger than that of the hole before expansion, and it is possible to obtain a highly versatile gap closing tool.

-According to the fifth invention, even if the flat plate body is large, it is difficult to distort so that only a part of the flat plate body is lifted, the entire flat plate body is easily narrowed, and the entire top surface of the flat plate body is peeled off from the floor slab. It can be glued so that it does not exist.
-According to the sixth invention, the gap between the pipe and the floor slab can be closed so that the gap between the pipe and the floor slab can be closed and the flat plate can be adhered to the floor slab. Can be closed and adhered to the floor slab.
-According to the seventh invention, the flat plate body can be narrowed in the plane direction so as to have good adhesion to the pipe so that there is no gap, and a substantially flat shape can be maintained, and leakage does not occur during mortar filling.
-According to the eighth invention, the gap closing tool is hard to be peeled off at the time of filling the mortar, it is easy to peel off after the mortar is solidified, and the residual area of the adhesive is easily set to 5% after the peeling, which is suitable. Since the residual area of the adhesive is small, it is easy to visually check the state of the solidified mortar.

Explanatory drawing of the gap closing tool (Example 1). Explanatory drawing of the state which looked up at the gap blocker (Example 1). Explanatory drawing of construction example of a gap closing tool (Example 1). Explanatory drawing of another form of a gap blocker (Example 2).

The gap closing tool supporting the fluid mortar that closes the gap between the pipe penetrating the floor slab and the floor slab was made into a flat plate body composed of a shape-maintaining layer made of a flexible resin layer and an adhesive layer. The flat plate body is provided with a hole for mounting the flat plate body on a pipe and a plurality of arcuate elongated holes evenly arranged so as to form concentric circles with the hole. By narrowing the flat plate body attached to the pipe in the plane direction and bringing the inner edge of the strip between the hole and the arc-shaped elongated hole into close contact with the outer circumference of the pipe, even one gap closing tool can be used. It can be applied to multiple types of pipes with different diameters.

In the first embodiment, the gap closing tool 1 will be described with reference to FIGS. 1 to 3. FIG. 1 shows an explanatory view of the gap closing tool. FIG. 1 (A) shows a plan view seen from the adhesive layer side of the gap closing tool, and FIG. 1 (B) shows an enlarged cross-sectional view at position AA of FIG. 1 (A). ..

FIG. 2 shows an explanatory view of a state in which the gap closing tool is adhered to the floor slab, looking up from below the floor slab. In FIGS. 2 (A) and 2 (B), a part of the flat plate is cut off and then the flat plate is narrowed in the plane direction so that the inner edge of the strip is brought into close contact with the outer periphery of the pipe. An example is shown. FIG. 2C shows an example in which the flat plate body is narrowed in the plane direction and a part of the flat plate body is overlapped so that the inner edge of the strip-shaped portion is brought into close contact with the outer circumference of the pipe. FIG. 3 shows an explanatory view of a construction example using the gap closing tool.

The gap closing tool 1 is a flat plate body 30 composed of a shape maintaining layer 10 and an adhesive layer 20. The flat plate has a square shape with a side of about 300 mm, and has a circular cross-sectional hole 31 mounted on the pipe and a plurality of arcuate elongated holes 40, 40, 40. On the outside of the hole 31, two rows of hole diameter matching means 50 and 51 that form a concentric circle with the hole and extend in the circumferential direction are provided. The circular cross-sectional hole 31 provided in the center of the flat plate has a hole diameter of about 120 mm and is slightly larger than 120 mm so as to be applied to a standard pipe having a diameter of 114.3 mm (4 inches). It is said to be the outer diameter.

The flat plate body 30 has a piping mounting area outward from the outer edge of the hole 31. Here, the region between the side 32 forming the flat plate and the hole 31 is referred to as the mounting region 33. The mounting area 33 is provided with a streak-like dividing means extending in the radial direction. The dividing means is a cut 60 formed radially in the mounting region, and is provided in advance in a streak pattern from the hole 31 to the outer edge of the flat plate body.

When the gap closing tool 1 is attached to the pipe 100, the pipe is inserted into the hole 31 through the position of the cut 60 (see FIG. 2). The dividing means is not limited to the cut, and may be a display line indicating the cut position, or may be a perforation provided discontinuously at short intervals so as to be easy to separate. When making perforations, it is advisable to make a notch from the adhesive layer to the middle part of the shape maintenance layer.

Further, the mounting area 33 is provided with a streak-shaped adapting means 70 extending in the radial direction along the dividing means. The fitting means has a plurality of perforations provided discontinuously at short intervals so as to be easily separated. Here, the perforations are formed by cutting from the adhesive layer 20 to the intermediate portion of the shape maintaining layer 10 (see FIG. 1 (B)). The plurality of perforations are a pair of first perforations 71 and 71 that reduce the length of the inner edge of the hole by about 15 mm, and a pair of second perforations 72 and 72 that reduce the length of the inner edge of the hole by about 30 mm, respectively (Fig.). 1 (See Fig. (A)). The number of perforations is not limited to this.

By combining the perforations to be excised, the length of the inner edge 34 of the hole can be reduced by about 60 mm in steps of about 15 mm. Therefore, the inner edge 34 of the hole can be brought into close contact with the pipe having an outer diameter smaller than the hole diameter. Specifically, when conforming to a pipe having a diameter of 101.6 mm (3 inches and a half), the diameter of the hole 31 is reduced from the original 120 mm by about 20 mm, that is, the length of the inner edge 34 of the hole. May be reduced by about 60 mm. In this case, the flat plate body from the cut 60 to the position of the pair of second perforations 72, 72 is cut off (see FIGS. 1 (A) and 2 (A)), and the edge portion 35 of the flat plate body, When the flat plate bodies 30 are narrowed in the plane direction and the edges are abutted against each other so that the 35s do not overlap, the inner edge 34 of the hole is brought into close contact with the outer periphery of the pipe 100 (see FIG. 2B).

When the flat plate body 30 is narrowed in the plane direction, one edge portion 36 may be overlapped with the other edge portion 37 so that the pipe 100 and the inner edge 34 of the hole are brought into close contact with each other (FIG. 2 (C)). ) See the figure). In this case, it is not necessary to cut the flat plate at the position of the perforation forming the adaptation means 70 (see FIG. 1 (A)). In either case, since the flat plate body 30 is narrowed in the plane direction and brought into close contact with the outer periphery of the pipe 100, the filled mortar does not leak from between the pipe 100 and the inner edge 34 of the hole. Good finish that does not require mortar cleaning work.

The region 38 excluding the mounting region of the flat plate body is uniformly provided with three arcuate elongated holes 40 so as to form a concentric circle 41 (see the alternate long and short dash line in FIG. 1A) of the hole 31. An annular portion 42 having a predetermined width is formed between the three arcuate elongated holes 40 and the hole 31. Even if a cut 60 forming the dividing means is made in the mounting area 33 of the flat plate body, the band-shaped portion 42 and the outer side 43 of the band-shaped portion are not separated by the cut. Therefore, when the pipe is attached to the hole 31, the strip-shaped portion 42 and the portion of the outer portion 43 of the strip-shaped portion are not separated, and the flat plate body 30 can be easily attached to the pipe.

Further, since the strip-shaped portion 42 surrounded by the three arc-shaped elongated holes 40, 40, 40 has a uniform width, the strip-shaped portion 42 is gently deformed out of the plane into a convex shape. Therefore, when the flat plate body 30 is narrowed in the plane direction and adhered, if the strip-shaped portion 42 raised out of the plane is pressed toward the floor slab, even after the outer 43 of the strip-shaped portion is adhered to the floor slab. , The shape of the strip-shaped portion 42 can be adjusted to be flat, and the entire flat plate body can be adhered to the floor slab substantially flatly.

The three arcuate elongated holes 40, 40, 40 are formed over a range of about 60 degrees of the concentric circles. The width of the arcuate elongated hole 40 is set to about 10 mm, but it may be adjusted according to the rigidity of the shape maintaining layer 10 (see FIG. 1 (B)) and the size of the flat plate body 30. Not limited. The number of arc-shaped elongated holes is not limited to three, and two arc-shaped elongated holes may be provided on both sides of the hole for mounting the pipe, or four or more arc-shaped elongated holes may be provided.

Further, the two rows of hole diameter matching means 50 and 51 provided on the inner diameter side of the strip-shaped portion 42 are perforated in an arc shape so as to be easily separated (see FIG. 1 (A)). The width of the strip-shaped portion 42 can be provided with two rows of hole diameter adjusting means 50 and 51, and the mortar to be filled does not leak even if the pipe is located at a position deviated from the center of the hole provided in the deck. It is preferable that the thickness is 50 mm or more and 100 mm or less. In the gap closing tool 1 of Example 1, the band-shaped portion 42 has a width of about 80 mm.

The arcuate perforations in the inner first row forming the hole diameter adjusting means 50 have a hole diameter of about 145 mm, which is slightly larger than a standard pipe having a diameter of 139.8 mm (5 inches). The outer second row of perforations forming the hole diameter adjusting means 51 has a hole diameter of about 170 mm, which is slightly larger than a standard pipe having a diameter of 165.2 mm (6 inches). As a result, even the gap closing tool 1 of one form can be applied to a plurality of standard pipes having a diameter larger than that of the hole before the expansion by enlarging the hole 31.

Next, the materials of the shape maintaining layer 10 and the adhesive layer 20 forming the flat plate body 30 will be described with reference to FIG. 1 (B). The shape-retaining layer 10 is integrated with the resin film 12 laminated on one surface of the foamed resin 11. If the thickness of the foamed resin 11 is 3 mm or more and 10 mm or less, the flat plate body 30 can be easily brought into close contact with the pipe, and even if a fluid mortar is supported, the foamed resin is not easily deformed downward and becomes durable. It is suitable because it can maintain a flat shape.

The material of the foamed resin 11 is foamed polyethylene or foam, which is flexible and easily adapts to the floor slab and the outer periphery of the pipe when the thickness is within the above range, and is not easily deformed depending on the weight of the fluid mortar. Polyurethane is preferred, but is not limited to this. In the gap closing tool 1, the foamed resin 11 is made of foamed polyurethane having a thickness of about 5 mm.

The material of the resin film 12 is preferably, for example, a resin film made of polyester, polypropylene, or polyethylene terephthalate, but is not limited thereto. When the thickness of the resin film 12 is about 10 μm or more and 40 μm or less, the adhesion with the foamed resin 11 is good and suitable. In the gap closing tool 1, the resin film 12 is made of a polyethylene resin film having a thickness of about 12 μm. Since the adhesive layer 20 is laminated on the resin film 12 which is harder to tear than the foamed resin 11, when the flat plate 30 is peeled off from the floor slab, a part of the foamed resin 11 is torn and stuck to the floor slab. It does not remain as it is, and the entire flat plate can be easily peeled off from the floor slab. Needless to say, the resin film 12 may be omitted.

The method of laminating the foamed resin 11 forming the shape-retaining layer 10 and the resin film 12 is not limited, but for example, one surface of the foamed resin 11 is surface-treated by a corona discharge treatment, a heat treatment, or the like, and the resin film layer 12 is subjected to a dry laminating method. It may be integrated and laminated. One surface of the adhesive layer 20 is adhered to the resin film layer 12, and the other surface is an adhesive surface to be adhered to the floor slab (see FIG. 1 (B)). The adhesive layer 20 was made to be a pressure-sensitive adhesive having removability. Release paper 21 is temporarily attached to the surface of the adhesive layer 20.

The pressure-sensitive adhesive has an initial adhesiveness (also referred to as initial tack) of 50 KPa / cm ² or more. Therefore, even if the thickness of the mortar to be supported is 200 mm, the gap closing tool is not easily peeled off from the floor slab. The initial adhesiveness is an index of the adhesiveness when the pressure-sensitive adhesive comes into contact with the adherend, and a large value of the initial adhesiveness is advantageous for adhesion to a rough surface. In addition, the 90-degree peeling test shown below confirmed that the mortar was easily peeled off after solidification, and that the residual area of the adhesive was 5% or less and the adhesive strength was such that the mortar surface was not invaded. Specifically, when the adhesive strength of the pressure-sensitive adhesive is 5.5 N / 25 mm or more, the residual area of the pressure-sensitive adhesive is less than 5%, which is preferable. When the adhesive strength of the pressure-sensitive adhesive is 8.5 N / 25 mm or more, there is no residual area of the pressure-sensitive adhesive, which is more preferable.

(90 degree peeling test)
The 90 degree peeling test complies with the provisions of "Japanese Industrial Standard K 6854-1 Adhesive-Peeling Adhesive Strength Test Method-Part 1: 90 Degree Peeling". As the test material, the adherend was a non-shrink mortar having a solidification time of 60 minutes. The test piece to be adhered to the adherend was prepared by applying an adhesive to one side of a resin film made of polyethylene terephthalate having a thickness of about 25 μm. The pressure-sensitive adhesive applied to the test piece was divided into two types: a solvent system A in which the component is an acrylic acid alkyl ester copolymer and a solvent system B in which the component is an acrylic acid ester copolymer. The curing temperature conditions were tested in an environment of −5 ° C. as a low temperature and 50 ° C. as a high temperature in a normal room. In the 90-degree peeling test, test pieces 1 to 3 are prepared for each component of the adhesive and temperature conditions, the peeling strength is measured, and the adhesive remaining on the adherend when the resin film is peeled off. The residual area of the agent was measured.

In the test procedure, the test piece was attached to a cylindrical container having a volume of 1 liter so that the test piece formed the bottom surface. Next, 1300 g of non-shrink mortar and 312 g of water were kneaded, flowed into a cylindrical container, and the mortar was supported on the test piece to reproduce the state of being virtually attached to the deck. In this state, it was solidified and cured for 3 days in an environment of −5 ° C. or an environment of 50 ° C., and then left in an environment of 23 ° C. for 1 day. Then, in an environment where the room temperature was 23 ° C., a 25 mm wide cut was made in the test piece, and the cut portion was peeled off from the adhesive layer in the 90 degree direction at a test speed of 300 mm / min. The test results are shown in Table 1 below.

[Table 1]

According to this test result, the residual area of the adhesive was "none" in both the temperature environment of the solvent system A of −5 ° C. and 50 ° C., and good results were obtained. Regarding the solvent system B, the residual area of the pressure-sensitive adhesive was 5% or more at 50 ° C., and good results could not be obtained. The average adhesive strength under this condition was 4.2 N / 25 mm. On the other hand, even in the case of the solvent system B, the residual area of the pressure-sensitive adhesive was less than 5% at −5 ° C., and the result was within the permissible range. Since the average adhesive strength under this condition was 5.5 N / 25 mm, it was confirmed that the adhesive strength that does not damage the mortar surface is 5.5 N / 25 mm or more.

Next, a construction example using the gap closing tool 1 will be described with reference to FIG. FIG. 3A shows an example of application to a concrete deck having a flat lower surface, showing a pipe having a diameter of 4 inches on the left side of the figure and a pipe having a diameter of 6 inches on the right side of the figure. Further, FIG. 3 (A) shows a cross-sectional view of the concrete deck, and FIG. 3 (B) shows a plan view corresponding to FIG. 3 (A). FIG. 3C shows an example of application to a steel deck plate having an uneven lower surface, and shows an explanatory view looking up at the deck plate.

The pipe 100 penetrating the concrete deck 200 may be arranged near the wall, and the separation distance between the wall 201 and the pipe 100 (see the distance a in FIG. 3A) is from the hole 31 of the flat plate body 30. It may be shorter than the length to the outer edge of the flat plate (see FIG. 3B, distance A). In this case, the area 39 on the opposite side of the mounting area across the hole is cut off (see the broken line in FIG. 3B), the length of the flat plate 30 is shortened in advance, and the wall 201 and the pipe 100 are formed. Fit to the distance between.

Even in this case, since the two arcuate elongated holes 40, 40 are symmetrically arranged with the holes 31 in between, the strip-shaped portion 42 is formed as a concrete deck even when the flat plate body 30 is narrowed in the plane direction. Easy to get used to. Therefore, if the release paper attached to the adhesive layer is peeled off, the outer 43 of the strip-shaped portion is adhered to the concrete deck 200, and then the strip-shaped portion 42 is pressed against the concrete deck, the entire flat plate 30 is formed. It can be adhered to be substantially flat.

The gap blocker 1 is adhered to the concrete deck, and the fluid mortar 203 filled in the gap between the concrete deck 200 and the pipe 100 inserted through the pipe insertion hole 202 is supported on the gap blocker 1. When the mortar is solidified, the gap closing tool 1 is peeled off from the concrete deck 200 to complete the construction.

When applied to a pipe 101 having a diameter larger than that of the hole 31 (see the pipe on the right side of FIG. 3A), the hole diameter matching means 51 (gap on the left side of FIG. The flat plate body 30 is cut off at the position of the arcuate perforation forming the obstruction tool 1) to form an expanded hole 310 (see the gap obstruction tool 1 on the right side of FIG. 3B). In addition, some pipes are partially tapered, and the outer diameter of the pipe 101 (see the distance b in FIG. 3A) at the portion protruding below the concrete deck 200 is according to the standard. It may be smaller than the outer diameter of (see distance B in the figure).

In this case, the inner edge 311 of the hole 310 which is expanded by cutting the first perforation 71 and the second perforation 72 forming the streak-like fitting means 70 according to the outer diameter b of the actual pipe 101. Adjust the length according to the outer circumference of the pipe. After the flat plate body 30 is attached to the pipe 101, the release paper is peeled off, the flat plate body is narrowed in the plane direction, the edges 35 and 35 of the perforations cut out from the flat plate body are abutted, and the outer periphery of the pipe and the hole It is brought into close contact with the inner edge side (see FIG. 2 (B)). Since the flat plate can be narrowed in the plane direction to adjust the diameter of the hole, the outer periphery of the pipe and the inner edge of the flat plate can be brought into close contact with each other even if the pipe 101 is partially tapered. A good finish without leakage can be obtained.

Next, an example in which the floor slab 210 is composed of a steel deck plate 211 and concrete 212 cast on the deck plate 211 will be described with reference to FIG. 3 (C). A deck plate is a steel plate for a floor used in a steel-framed building, and has a square corrugated cross-sectional shape in order to maintain strength. Since the concrete 212 is cast only on the top surface side of the deck plate 211, the uneven portion 213 by the deck plate is exposed on the lower surface of the deck plate 210. The pipe insertion hole 214 (see the alternate long and short dash line in FIG. 3C) penetrating the deck 210 is drilled together with the deck plate 211 after the concrete 212 is placed.

There is an uneven portion 213 of the deck plate on the peripheral edge of the pipe insertion hole 214 drilled in the deck 210, and the gap closing tool 1 cannot be adhered flatly to the deck as it is. Therefore, the entrance / exit adjusting member 220 is fitted into the concave portion 215 of the deck plate in advance and then perforated to form a flat adhesive surface by aligning the entrance / exit with the convex portion 216 of the deck plate. In this state, if the gap closing tool is adhered, the present invention can be applied to a deck plate having uneven portions.

The fluid mortar filled in the gap between the pipe 100 and the pipe insertion hole 214 is filled up to the top surface of the gap closing tool 1 in both the concave portion 215 of the deck plate and the convex portion 216 of the deck plate, and the pipe 100 is filled. Around the mortar is filled with fluid mortar without any gaps.

The shape of the entrance / exit adjusting member 220 may be the same as that of the recess 215 of the deck plate. The entrance / exit adjusting member 220 is preferably, but is not limited to, a foamed resin material that can be easily processed at the construction site. The entrance / exit adjusting member may be fitted by applying an adhesive to the surface of the deck plate in contact with the concave portion at the construction site, but it is preferable to provide a layer of the adhesive in advance because the construction becomes easier.

In the second embodiment, a gap closing tool 2 having a plurality of second arc-shaped elongated holes on the outside of the arc-shaped elongated holes will be described with reference to FIG. FIG. 4A shows a plan view of the gap closing tool 2 as viewed from the adhesive layer side. FIG. 4B shows a plan view of the gap closing tool 2 in a state before the streak-shaped fitting means is cut and the flat plate body is narrowed in the plane direction. FIG. 4C shows a plan view of the gap closing tool 2 in a state after the flat plate body is narrowed in the plane direction.

The gap closing tool 2 shows an example of being applied to a pipe 102 having a diameter larger than that of the first embodiment (see FIG. 4B). One side of the flat plate body 30 having a substantially square shape is 450 mm, and the hole 31 for mounting the flat plate body on the pipe is made to have a diameter of about 170 mm in accordance with the pipe of 165.2 mm (6 inches). The arcuate perforations that form the hole diameter matching means are larger than the arcuate perforations 52 with a diameter of 195 mm, which are larger than the pipes with a diameter of about 190.7 mm (7 inches), and the pipes with a diameter of 216.3 mm (8 inches). An arcuate perforation 53 having a diameter of 220 mm is used. The material and thickness of the flat plate body 30 are the same as those in the first embodiment.

The gap closing tool 2 has a mounting region 33 having a cut 60 forming a dividing means in a region from the outer edge of the hole 31 to one side of the flat plate body. The area 38 excluding the mounting area includes four first arc-shaped elongated holes 80 and three second arc-shaped elongated holes 90 arranged outside the first arc-shaped elongated holes. The first arcuate elongated hole 80 covers the mounting area 33 over a range of 360 degrees of the concentric circle so as to form a concentric circle 81 having a diameter larger than that of the hole 31 (see the alternate long and short dash line in FIG. 4 (A)). It is pierced evenly every 90 degrees to avoid it.

The second arcuate elongated hole 90 extends over a range of 270 degrees of the large-diameter concentric circle 91 so as to form a large-diameter concentric circle 91 having a diameter larger than that of the concentric circle 81 (see FIG. 4 (A) two-dot chain line). It is evenly drilled in every 90 degree range. In the second arc-shaped elongated hole 90, three of the edges of the adjacent first arc-shaped elongated holes 80, 80, excluding the mounting area, are located in the circumferential direction of the three second arc-shaped elongated holes 90. It is drilled so as to be located in the center. Between the first arc-shaped elongated hole 80 and the second arc-shaped elongated hole 90 is a strip-shaped second strip-shaped portion 92 having a predetermined width.

If the width of the second strip-shaped portion 92 is 10 mm or more and 50 mm or less, it is preferable that the flat plate body 30 is easily adhered to the floor slab so as not to be lifted. The width of the second arc-shaped elongated hole 90 is set to 10 mm as in the case of the first arc-shaped elongated hole, but the width is not limited to this.

When the flat plate body 30 is adhered to the floor slab, the positions of the streak-shaped perforations forming the streak-shaped fitting means 70 and the arc-shaped perforations 52 forming the hole diameter matching means in advance according to the outer diameter of the pipe 102, The flat plate is cut off at position 53 (see FIG. 4 (B)). When the flat plate body 30 is narrowed in the plane direction (see the arrow in FIG. 4B), the space 82 between the edges of the adjacent first arc-shaped elongated holes slightly protrudes outward in the radial direction. .. Since the slightly overhanging portion 83 is located at the central portion in the circumferential direction of the second arc-shaped elongated hole 90, the deformation of the overhanging portion 83 is contained in the second arc-shaped elongated hole 90 (FIG. FIG. 4 (C)).

As a result, even when the piping standard is large and it is necessary to increase the area of the flat plate body, it is difficult to distort only a part of the flat plate body, and the entire flat plate body is easily narrowed. The entire top surface of the flat plate can be made substantially flat and adhered to the floor slab, and the gap closing tool 2 carrying the fluid mortar is hard to peel off from the floor slab. Therefore, the adhesive layer can be made into an adhesive that can be easily peeled off, and when the gap closing tool is peeled off from the floor slab after the mortar is solidified, the adhesive is less likely to remain on the floor slab.

(others)
-The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The technical scope of the present invention is indicated by the scope of claims, not limited to the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1,2 ... Gap blocker,
10 ... shape maintenance layer, 20 ... adhesive layer, 30 ... flat plate, 40 ... arcuate elongated hole,
11 ... Effervescent resin, 12 ... Resin film, 21 ... Release paper,
31 ... hole, 32 ... one side, 33 ... mounting area, 34 ... inner edge, 35, 36, 37 ... edge,
38 ... Area excluding the mounting area, 39 ... Area on the opposite side of the mounting area,
310 ... Expanded hole, 311 ... Inner edge,
41 ... concentric circles, 42 ... strips, 43 ... outside the strips,
50, 51 ... Hole diameter matching means, 52, 53 ... Arc-shaped perforations, 60 ... Cuts,
70 ... Fitting means, 71 ... 1st perforation, 72 ... 2nd perforation,
80 ... 1st arcuate slot, 81 ... concentric circles, 82 ... between edges, 83 ... overhanging part,
90 ... 2nd arcuate slot, 91 ... Large diameter concentric circle, 92 ... 2nd strip,
100 ... Piping, 101, 102 ... Large diameter piping,
200 ... concrete deck, 201 ... wall, 202 ... pipe insertion hole, 203 ... fluid mortar,
210 ... Deck, 211 ... Deck plate, 212 ... Concrete, 213 ... Uneven part,
214 ... Piping insertion hole, 215 ... Concave, 216 ... Convex,
220 ... Entrance / exit adjustment member

Claims (8)

It is a gap closing tool that supports a fluid mortar that closes the gap between the circular cross-section pipe that penetrates the deck and the surrounding floor slab.
It is a flat plate consisting of a shape-maintaining layer and an adhesive layer.
The shape-retaining layer is made of a resin layer having a predetermined thickness as well as being flexible.
The flat plate body has a hole having a circular cross section and a plurality of arcuate elongated holes.
The hole has a diameter equal to or larger than the outer diameter of the pipe, and has a mounting area for the pipe outward from the outer edge thereof.
A plurality of the arc-shaped elongated holes are evenly provided in a region other than the mounting region so as to form a concentric circle with the holes, and a strip-shaped portion having a predetermined width is formed between the holes and the arc-shaped elongated holes.
The flat plate body is mounted on the pipe through the position of the mounting region, narrowed in the plane direction, the inner edge of the strip-shaped portion is brought into close contact with the outer periphery of the pipe, and is adhered to the floor slab by the adhesive layer. A fluid mortar is supported in a flat state along the deck.
A gap blocker characterized by that. The mounting area is provided with a streak-like dividing means extending in the radial direction.
The dividing means reaches from the hole to the outer edge of the flat plate body,
Insert the pipe into the hole through the position of the streak-like dividing means.
The gap closing tool according to claim 1. The flat plate body includes a streak-like adapting means extending in the radial direction along the dividing means.
The flat plate body between the position of the adapting means and the position of the dividing means is cut off, and the length of the outer circumference of the pipe and the length of the inner edge of the adapting means are matched.
In a state where the flat plate body is narrowed in the plane direction, the flat plate body is adhered flatly to the floor slab so that the flat plate bodies do not overlap.
The gap closing tool according to claim 2, wherein the gap closing tool. The flat plate body is provided with a hole diameter adjusting means that forms a concentric circle with the hole and extends in the circumferential direction.
The flat plate body is cut off at the position of the hole diameter adjusting means according to the outer diameter of the pipe, and the length of the inner edge of the position of the hole diameter adjusting means is adjusted to the length of the outer circumference of the pipe thicker than the pipe. The flat plate body is attached to the pipe.
The gap closing tool according to any one of claims 1 to 3, wherein the gap closing tool. A plurality of second arc-shaped elongated holes are provided outside the arc-shaped elongated holes so that the flat plate body forms a concentric circle with the holes in a region other than the mounting region.
The space between the edges of the adjacent arc-shaped holes is located at the center of the second arc-shaped hole in the circumferential direction, and the space between the arc-shaped hole and the second arc-shaped hole is a strip of a predetermined width. It is said to be the second band,
The gap closing tool according to any one of claims 1 to 4, wherein the gap closing tool. The width of the strip is 50 mm or more and 100 mm or less.
The gap closing tool according to any one of claims 1 to 5, wherein the gap closing tool. The shape-retaining layer is made of a foamed resin having a thickness of 3 mm or more and 10 mm or less.
The gap closing tool according to any one of claims 1 to 6, wherein the gap closing tool. The adhesive strength of the adhesive layer was 5.5 N / 25 mm or more in the 90 degree peeling test.
The adhesive force between the adhesive layer and the shape-retaining layer is larger than the adhesive force between the adhesive layer and the floor slab.
The gap closing tool according to any one of claims 1 to 7, wherein the gap closing tool.

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