KR102338454B1 - Sleeves for forming compartment through-holes in buildings - Google Patents

Abstract

A sleeve (1) for forming a partition through-hole in a building includes a first sleeve (10) having a body portion (11), and a first sleeve (10) having a thermally expansible body portion (21) fitable with the first sleeve (10). Two sleeves 20 are provided. In a state where the first sleeve 10 and the second sleeve 20 are fitted, at least a part of the body portion 21 of the second sleeve 20 is exposed.

Description

Sleeves for forming compartment through-holes in buildings

The present invention relates to a sleeve for forming a partition through-hole in a building.

In the concrete cast floor of each floor of a building, it is necessary to form a partition penetration structure in order to pass a pipe and/or wiring from above a floor to below a floor or vice versa. Specifically, a partition through-hole for passing a pipe and/or wiring is formed in a floor or wall such as concrete. As previously described in Patent Document 1, for example, a void or sleeve called a void or sleeve before concrete pouring. Install the pipe to the bottom of the floor, fix it vertically, pour concrete around the sleeve to make a concrete floor, cure it, and use the opening partitioned inside the sleeve as a partition through hole, and pipe and/or wiring passed through And, since the sleeve is generally made of resin, paper or metal, in the event of a fire, the fire propagates from the compartment to the adjacent compartment through the piping and/or wiring. In order to impart fire resistance to the division penetration structure, it is necessary to separately install a fire resistance material in the through hole after piping and/or wiring to form a fire resistance structure.

Japanese Laid-Open Patent Publication No. 6-257281

Even if a fire resistant material is not separately installed after wiring and/or piping, it is advantageous if the division penetration structure of a building has fire resistance.

In addition, in order to impart fire resistance to the sleeve, it may be considered to form a part of the sleeve with a heat-expandable fire-resisting resin material, but increasing the portion of the heat-expandable fire-resistant resin material improves the adhesion of the combustion residue to concrete, but against external impact It becomes easy to deform, and if the portion of the thermally expansible refractory resin material is reduced, the adhesion of the combustion residue to concrete is lowered, and more combustion residues are dropped, but it becomes stronger against external impact.

It is an object of the present invention to provide a sleeve excellent in fire resistance for forming a partition through-hole in a building.

Another object of the present invention is to provide a sleeve for forming a partition through-hole in a building, which has strength against external impact and adhesion of combustion residues to the building.

The present inventors, in order to achieve the above object, by combining the first sleeve and the second sleeve having a thermally expansible body portion to form a sleeve, imparting fire resistance to the compartment penetration structure, and also providing strength against external impact and improving the building structure. It was discovered that it can have both adhesiveness with respect to this, and it came to complete this invention.

According to the present invention, the following aspects are provided.

[Item 1] A sleeve for forming a partition through-hole in a building, the first sleeve having a main body and an enlarged or reduced diameter continuous with the main body; A sleeve comprising: a hollow second sleeve having a thermally expansible body portion fitable with the first sleeve; wherein at least a portion of the body portion of the second sleeve is exposed in a state in which the first sleeve and the second sleeve are fitted.

[Item 2] The ratio of the expansion ratio of the body part of the first sleeve to the expansion ratio of the body part of the second sleeve is 0 ≤ (expansion ratio of the body part of the first sleeve / expansion ratio of the body part of the second sleeve) < 1 The sleeve described in 1.

[Item 3] The sleeve according to Item 1 or 2, wherein the main body portion of the first sleeve is inflatable.

[Item 4] Any of items 1 to 3, wherein 0 < (exposed area of the outer circumferential surface of the second sleeve/exposed area of the outer circumferential surface of the first sleeve) × 100 ≤ 100 in a state where the first sleeve and the second sleeve are fitted The sleeves listed in one.

[Item 5] The sleeve according to any one of Items 1 to 4, wherein 10 ≤ (volume of the body portion of the second sleeve)/(sum of the volume of the first sleeve and the volume of the second sleeve) × 100 ≤ 80.

[Item 6] The sleeve according to any one of Items 1 to 5, wherein the outer diameter of the main body portion of the second sleeve is equal to or greater than the inner diameter of the main body portion of the first sleeve.

[Item 7] (i) the inner diameter of the body portion of the first sleeve is smaller than the inner diameter of the body portion of the second sleeve, (ii) the inner diameter of the body portion of the first sleeve is equal to the inner diameter of the body portion of the second sleeve, or (iii) ) the inner diameter of the body portion of the first sleeve is greater than the inner diameter of the body portion of the second sleeve, and the difference between the inner diameter of the body portion of the second sleeve and the inner diameter of the body portion of the first sleeve is 8% or less of the inner diameter of the body portion of the first sleeve; The sleeve according to any one of Items 1 to 6, which satisfies any relation of (i) to (iii).

[Item 8] In a state where the first sleeve and the second sleeve are fitted, an end of the first sleeve or the second sleeve forming a fitting portion between the first sleeve and the second sleeve, and the first sleeve or the second sleeve The gap (L) between the end and the face of the second sleeve or the first sleeve facing along the axial direction of the sleeve is

0 < L ≤ (first sleeve length/2)

phosphorus, the sleeve according to any one of claims 1 to 7.

[Item 9] The sleeve according to any one of Items 1 to 8, wherein in the fitting portion of the first sleeve and the second sleeve, the facing peripheral surfaces of the first sleeve and the second sleeve are in contact.

[Item 10] The sleeve according to any one of claims 1 to 9, wherein an annular member having one or a plurality of attachment portions is formed at one end of an outer peripheral surface of the main body portion of the first sleeve and/or the second sleeve.

The sleeve according to any one of claims 1 to 9, wherein an annular member is formed at one end of the main body portion of the first sleeve and/or the second sleeve.

[Item 11] The sleeve according to any one of Items 1 to 9, wherein an annular projection protruding from the main body is formed at a position spaced apart from the end of the main body of the first sleeve and/or the second sleeve.

[Item 12] The sleeve according to any one of Items 1 to 11, further comprising a third sleeve fitted to the first sleeve or the second sleeve.

[Item 13] A partition-through structure comprising:

floor or wall,

A partition penetration structure provided with the sleeve of any one of Claims 1-12 provided on a floor or a wall.

[Item 14] The partition-through structure according to Item 13, further comprising a pipe or wiring disposed in the sleeve.

[Paragraph 15] A fire-resistant filling structure, comprising:

The sleeve according to any one of claims 1 to 12;

a pipe or wiring disposed within the sleeve;

A fire resistant filling structure having a fixed frame mounted to a first sleeve.

ADVANTAGE OF THE INVENTION According to this invention, fire resistance can be provided to a division penetration structure at the same time as a sleeve is provided, and construction of a division penetration structure can be made easy. In addition, the sleeve of the present invention can be provided with strength against external impact and adhesion to the floor or wall of the building, so that the fire resistance performance is improved.

1 is an exploded schematic perspective view of a sleeve according to an embodiment of the present invention;
Figure 2 is (A) a top view of the first sleeve, (B) a side cross-sectional view, (C) a bottom view.
3 is (A) a top view of the second sleeve, (B) a side cross-sectional view, (C) a bottom view.
Fig. 4 is a schematic side view of a state in which the second sleeve is fitted to the first sleeve;
5(A) to 5(D) are schematic cross-sectional views of the construction method of the partition penetration structure of the present invention using the sleeve of FIG. 1;
6 is a schematic cross-sectional view of a sleeve of another example;
Fig. 7 is a schematic cross-sectional view of a sleeve of another example;
Fig. 8 (A) and Fig. 8 (B) are schematic cross-sectional views showing the third sleeve.

Hereinafter, an embodiment of the present invention embodied in a sleeve will be described with reference to the drawings.

1 shows a sleeve 1 for forming partition through-holes in a floor or wall of a building of a first embodiment of the present invention, also called a void. Specifically, the sleeve 1 is arranged before pouring of concrete. The sleeve 1 includes a first sleeve 10 and a second sleeve 20 . In addition, in the specification, "building" includes building materials such as detached houses, collective houses, high-rise houses, high-rise buildings, commercial facilities, and public facilities; Ships such as passenger ships, transport ships, and ferries; vehicle ; structures such as, but not limited to.

1 and 2(B) , the first sleeve 10 has a hollow substantially cylindrical body portion 11, and a hollow substantially cylindrical body portion 11 continuous through the main body portion 11 and the stepped portion 15. A cylindrical enlarged diameter portion 16 is provided. In the present embodiment, the body portion 11, the stepped portion 15, and the enlarged diameter portion 16 are continuously formed of the same non-thermal expansible material, and the first sleeve 10 is formed from the upper end 12 to the lower end ( 18) continues. As a non-thermal expansible material, metals, such as steel, copper, and stainless steel, may be sufficient, and non-thermal expansible refractory resin material, such as an acrylic resin, an epoxy resin, a polypropylene resin, and vinyl chloride, may be sufficient.

1 and 3B, the second sleeve 20 includes a thermally expansible hollow substantially cylindrical body 21 that can be fitted into the enlarged diameter 16 of the first sleeve 10, , an annular member 26 attached to the periphery of the body portion 21 and an annular projection 28 , wherein the annular member 26 includes one or a plurality of attachment portions 27 attached to the annular member 26 . ) to the second sleeve 20, it is attached to one end (lower end 23 in the drawing) of the outer peripheral surface of the body portion 21, and protrudes from the end (lower end 23 in the drawing). The annular projection 28 is formed at a position spaced apart from one end (lower end 23) of the outer circumferential surface of the body portion 21, and protrudes from the outer circumferential surface of the body portion 21, the first sleeve of the second sleeve 20 (10) It functions as a stop member for stopping the fitting against.

The body portion 21 is formed of a thermally expansible refractory resin material. A refractory resin material is a resin composition containing a thermally expansible layered inorganic substance in a resin component. The member made of the refractory resin material of the second sleeve 20 including the main body 21 includes a single screw extruder, a twin screw extruder, a Banbury mixer, a kneader mixer, a kneading roll, a shredder, and a planetary stirrer for each component of the resin composition. It can be obtained by kneading using a well-known apparatus, such as and shaping|molding by a well-known shaping|molding method.

As the resin component, a known resin component can be widely used, and examples thereof include a thermoplastic resin, a thermosetting resin, a rubber substance, and a combination thereof.

Examples of the thermoplastic resin include polyolefin resins such as polypropylene resins, polyethylene resins, poly(1-)butene resins, and polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, and polycarbonate resins. and synthetic resins such as polyphenylene ether resin, (meth)acrylic resin, polyamide resin, polyvinyl chloride resin, novolak resin, polyurethane resin, and polyisobutylene.

Examples of the thermosetting resin include synthetic resins such as polyurethane, polyisocyanate, polyisocyanurate, phenol resin, epoxy resin, urea resin, melamine resin, unsaturated polyester resin, and polyimide.

Examples of the rubber material include natural rubber, isoprene rubber, butadiene rubber, 1,2-polybutadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, chlorinated butyl rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, and rubber substances such as acrylic rubber, epichlorhydrin rubber, poly-vulcanized rubber, unvulcanized rubber, silicone rubber, fluororubber, and urethane rubber.

These synthetic resins and/or rubber substances can use 1 type or 2 or more types.

Among these synthetic resins and/or rubber substances, those having properties such as cold resistance, heat resistance, and oil resistance can be flexibly adjusted. In order to obtain the resin composition which is easy to handle with more flexible characteristic, what added the plasticizer to vinyl chloride-type resin is used preferably. Instead, an epoxy resin is preferable from the viewpoint of increasing the flame retardancy of the resin itself and improving the fire prevention performance.

The thermally expansible layered inorganic substance expands upon heating. There is no limitation in particular in such a thermally expansible layered inorganic substance, For example, vermiculite, kaolin, mica, thermally expansible graphite, etc. are mentioned. Thermally expansible graphite is a conventionally known material, and powders such as natural pulled graphite, pyrolytic graphite, and quiche graphite are mixed with inorganic acids such as concentrated sulfuric acid, nitric acid and selenic acid, concentrated nitric acid, perchloric acid, perchlorate, and permanganate; A graphite interlayer compound is produced by treatment with a strong oxidizing agent such as dichromate or hydrogen peroxide. The thermally expandable graphite obtained by carrying out the acid treatment as described above may further be neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound, or the like. As a commercial item of thermally expansible graphite, "GREP-EG" by Tosoh Corporation, "ADT-351" by ADT, "ADT-501", "GRAFGUARD" by GRAFTECH, etc. are mentioned, for example.

It is preferable that the said resin composition contains the said thermally expansible layered inorganic substance in 10-350 weight part with respect to 100 weight part of resin components, such as the said thermoplastic resin and an epoxy resin.

The resin composition constituting the thermally expansible refractory material may further contain an inorganic filler. The inorganic filler increases heat capacity and suppresses heat transfer when the expanded heat insulating layer is formed, and acts as an aggregate to improve the strength of the expanded heat insulating layer. It does not specifically limit as an inorganic filler, For example, Metal oxides, such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, a tin oxide, antimony oxide, ferrite; water-containing inorganic substances such as calcium hydroxide, magnesium hydroxide, aluminum hydroxide, and hydrotalcite; and metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate and barium carbonate. In addition, examples of the inorganic filler include calcium salts such as calcium sulfate, gypsum fiber, and calcium silicate; Silica, diatomaceous earth, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass fiber, glass beads, silica-based balloons, aluminum nitride, boron nitride, silicon nitride, Carbon black, graphite, carbon fiber, carbon balloon, charcoal powder, various metal powders, potassium titanate, magnesium sulfate, lead zirconate titanate, zinc stearate, calcium stearate, aluminum borate, molybdenum sulfide, silicon carbide, stainless fiber, zinc borate , various magnetic powders, slag fibers, fly ash, dehydrated sludge, and the like. These inorganic fillers can be used independently and can also use 2 or more types together.

Among the inorganic fillers, specific examples of aluminum hydroxide include "Hydilite H-31" (manufactured by Showa Denko Co., Ltd.) with a particle diameter of 18 µm, "B325" with a particle diameter of 25 µm (manufactured by ALCOA), as calcium carbonate, a particle size "Phyton SB Red" (manufactured by Bihoku-Hunka Kogyo Co., Ltd.) having a particle size of 1.8 µm, "BF300" having a particle size of 8 µm (manufactured by Bihoku-Hunka Kogyo Co., Ltd.), etc. are mentioned.

It is preferable that the said resin composition contains 30-400 weight part of inorganic fillers with respect to 100 weight part of resin components, such as the said thermoplastic resin and an epoxy resin.

Moreover, the total of the said thermally expansible layered inorganic substance and the said inorganic filler is preferable with respect to 100 weight part of resin components, The range of 50-600 weight part is preferable.

Moreover, in order to increase the intensity|strength of an expansion insulation layer and to improve fire prevention performance, the resin composition which comprises a thermally expansible fireproof material adds to said each component, and may contain a phosphorus compound further. It does not specifically limit as a phosphorus compound, For example, Red phosphorus; various phosphoric acid esters such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, and xylenyl diphenyl phosphate; phosphate metal salts such as sodium phosphate, potassium phosphate, and magnesium phosphate; ammonium polyphosphate; The compound etc. which are represented by following General formula (1) are mentioned. Among these, from the viewpoint of fire protection performance, red phosphorus, ammonium polyphosphate, and a compound represented by the following general formula (1) are preferable, and ammonium polyphosphate is more preferable in terms of performance, safety, cost, and the like.

[Formula 1]

In general formula (1), R<^1> and R<^3> represent hydrogen, a C1-C16 linear or branched alkyl group, or a C6-C16 aryl group. R ² is a hydroxyl group, having 1 to 16 carbons in a linear or branched alkyl having 1 to 16 carbons, an alkoxyl of the linear or branched group, having 6 to 16 aryl group or having 6 to 16 aryl represents an oxy group.

As the red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of safety, such as moisture resistance and non-combustion during kneading, those in which the surface of red phosphorus particles are coated with a resin, etc. are preferably used. It does not specifically limit as ammonium polyphosphate, For example, although an ammonium polyphosphate, melamine-modified ammonium polyphosphate, etc. are mentioned, Points, such as handleability, ammonium polyphosphate is used preferably. As a commercial item, "AP422" by a Clariant company, "AP462", "FR CROS 484" by a Budenheim Iberica company, "FR CROS 487", etc. are mentioned, for example.

The compound represented by the general formula (1) is not particularly limited, and for example, methylphosphonic acid, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonic acid, n-propylphosphonic acid, n-butylphosphonic acid, 2 -Methylpropylphosphonic acid, t-butylphosphonic acid, 2,3-dimethyl-butylphosphonic acid, octylphosphonic acid, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphinic acid, methylethylphosphinic acid, methylpropylphosphinic acid , diethylphosphinic acid, dioctylphosphinic acid, phenylphosphinic acid, diethylphenylphosphinic acid, diphenylphosphinic acid, bis(4-methoxyphenyl)phosphinic acid, and the like. Among them, although expensive, t-butylphosphonic acid is preferable from the viewpoint of high flame retardancy. Said phosphorus compound may be used independently and may use 2 or more types together.

This resin composition expands by heating to form a fire-resistance and heat-insulating layer. According to this formulation, the thermally expansible refractory material is expanded by heating, such as fire, to obtain a required volumetric expansion rate, and after expansion, it has a predetermined thermal insulation performance and can form combustion residues, so that a stable fire resistance performance can be achieved

In addition, the said resin composition, respectively, in the range which does not impair the objective of this invention, as needed, in addition to antioxidants, such as a phenol type, an amine type, sulfur type, a metal inhibitor, an antistatic agent, a stabilizer, a crosslinking agent, a lubricant, a softening agent, Additives such as pigments, tackifying resins and molding aids, and tackifiers such as polybutene and petroleum resins may be included.

A thermally expansible refractory resin material can be obtained as a commercial item, for example, a fire barrier manufactured by Sumitomo 3M (a thermally expansible refractory material comprising a resin composition containing chloroprene rubber and vermiculite, expansion coefficient: 3 times, thermal conductivity: 0.20 kcal/m ·h·°C), Mitsui Metal Paint Co., Ltd. Mejihicut (a thermally expansible refractory material consisting of a resin composition containing a polyurethane resin and thermally expansible graphite, expansion coefficient: 4 times, thermal conductivity: 0.21 kcal/m·h·°C), fine Thermally expansible refractory materials, such as the Kisui Chemical Industry Co., Ltd. piblock, etc. are mentioned.

The said thermally expansible fireproof material will not be specifically limited if the said thermally expansible fire-resistant material is insulated by the expansion layer when exposed to high temperature, such as a fire, and there exists intensity|strength of the expansion layer. It is preferable if the volume expansion rate after heating for 30 minutes on the heating condition of 50 kW/m<2> is 3 to 50 times. If the volume expansion rate is 3 times or more, the expansion volume can sufficiently fill the lost portion of the resin component, and if it is 50 times or less, the strength of the expansion layer is maintained, and the effect of preventing the penetration of flames maintain.

The annular member 26 and the annular projection 28 may be formed of the same thermally expansible refractory resin material as the body portion 21, or may be formed of a non-thermal expansible refractory resin material such as a metal such as steel or hard vinyl chloride. The annular member 26 and the annular projection 28 are preferably formed of metal. The annular member 26 has one or a plurality of attachment portions 27 (four in the drawing) extending outwardly perpendicular to the axis of the second sleeve 20 from the annular member 26 . The attachment portions 27 are each represented by four attachment portions spaced apart by about 90° with respect to the axis 2 of the sleeve 1, and each attachment portion 27 attaches the second sleeve 20 to the bottom base 3 It has a hole 27a for fixing. A rectangular formwork 4 with a floor is usually for accommodating the concrete 5 (see Fig. 5(B)), and in the formwork 4, a reinforcing bar (R) for reinforcement of the concrete 5 this is accepted The concrete 5 and the reinforcing bar R constitute the floor base 3, and the floor base 3 constitutes the floor.

A metal wire such as wire, bolts, screws, nails, etc. can be passed through the hole 27a to fix the second sleeve 20 to the formwork 4, reinforcing bar R, or concrete 5. For example, by connecting both ends of the metal wire, which is a fixing member, to the reinforcing bar R, or passing a bolt, screw, nail, etc. through the hole 27a and pouring the concrete 5 around it, the second The sleeve 20 is fixed against the reinforcing bar R.

As shown in FIG. 4 , in a state where the second sleeve 20 is fitted to the first sleeve 10 , the first sleeve 10 and the second sleeve 20 are connected to the shaft 9 of the sleeve 1 . (and the axial direction of the first sleeve 10 and the second sleeve 20) of The inner peripheral surface 14 of the main body 11 of the first sleeve 10 and the outer peripheral surface 24 of the main body 21 of the second sleeve 20 are in contact with each other in a fitted state. Moreover, in the state which fitted the 2nd sleeve 20 with the 1st sleeve 10, a part of the outer peripheral surface of the main body part 21 of the 2nd sleeve 20 is exposed. In the present embodiment, a portion of the enlarged diameter portion 16 of the first sleeve 10 and a portion of the second sleeve 20 are overlapped with each other, the first sleeve 10 and the second sleeve 20 overlapping each other ( 42) constitutes.

By forming the body portion 21 of the second sleeve 20 from a heat-expandable refractory resin material, the adhesion between the second sleeve 20 and concrete is improved, and the adhesion of the combustion residue of the second sleeve 20 to the concrete. This improves and it becomes difficult for a heat insulation layer to collapse|disintegrate. In addition, if there are many exposed regions of the thermally expansible refractory resin material, the sleeve 1 is easily deformed with respect to external impact. can do it In addition, the amount of the inflatable material used can be kept to the minimum required, and the through sleeve can be provided at a reasonable price. In this way, by combining the non-thermal expandable first sleeve 10 and the second sleeve 20 having a thermally expansible body portion to constitute the sleeve 1, fire resistance is imparted to the compartment penetration structure, and the resistance to external impact is increased. By combining strength and adhesion to concrete, it can be provided at a reasonable price.

Preferably, the sleeve (1), with the second sleeve (20) fitted to the first sleeve (10),

0 < (exposed area of outer peripheral surface 24 of second sleeve 20/exposed area of outer peripheral surface 13 of first sleeve 10) x 100 ≤ 100 ... Equation (1)

is satisfied with "Exposure" refers to a state that is visible when viewed from the side perpendicular to the axis of the first sleeve 10, and means a portion in contact with concrete when poured. In Fig. 4, the exposed portion of the first sleeve 10 is a portion of the outer circumferential surface 13 reaching the length of X, and the exposed portion of the second sleeve 20 is a portion of the outer circumferential surface 24 reaching the length of Y.

By satisfying the formula (1), since the exposed area of the outer circumferential surface 13 of the first sleeve 10 is larger than the exposed area of the outer circumferential surface 24 of the second sleeve 20, the Shows the effect of strengthening tolerance.

Also preferably, the sleeve 1 is

10 ≤ (volume of the body portion of the second sleeve (V ₂ ))/(sum of the volume of the first sleeve and the volume of the second sleeve (V ₁ )) × 100 (%) ≤ 80 ... Equation (2)

If (the volume of the main-body part of a 2nd sleeve)/(sum of the volume of a 1st sleeve and the volume of a 2nd sleeve) x 100 (%) is 10 or more, fire resistance performance will become sufficient. When (the volume of the main body of the second sleeve)/(the sum of the volume of the first sleeve and the volume of the second sleeve)×100 (%) is 80 or less, the price of the sleeve is suppressed. Moreover, destruction of the fire-resistant structure, such as pushing up of the cover member 30 and the annular member 26 by excessive expansion at the time of a fire, is prevented.

In addition, the inner diameter A of the body portion 11 of the first sleeve 10 ((B) in FIG. 2 ) is (i) the inner diameter B of the body portion 21 of the second sleeve 20 ( 3 (B)), (ii) equal to the inner diameter (B) of the body portion 21 of the second sleeve 20, or (iii) the body portion 21 of the second sleeve 20 is larger than the inner diameter (B) of and the difference between the inner diameter (B) and the inner diameter (A) is 8% or less of the inner diameter (A), any relation of (i) to (iii) is satisfied. With this configuration, the movement of the second sleeve 20 into the first sleeve 10 (movement upward in FIG. 4 ) is regulated by the circumferential surface of the step portion 15 , that is, the inner peripheral surface 15a. . The inner circumferential surface 15a is formed on the inner circumferential surface of the first sleeve 10 so as to protrude inwardly from the body portion 21 of the second sleeve 20 substantially perpendicular to the axis 9 of the first sleeve 1 . has been Further, when the second sleeve 20 is expanded by heating in a state in which the second sleeve 20 is fitted to the first sleeve 10, the upper end 22 of the main body 21 of the second sleeve 20 is ) expands and comes into contact with the inner peripheral surface 15a of the step portion 15, so that the upward expansion of the second sleeve 20 is regulated. As a result, the inward expansion of the second sleeve 20 in a direction perpendicular to the axial direction of the second sleeve 20 in the exposed portion of the second sleeve 20, particularly perpendicular to the axial direction, and inward of the second sleeve 20 is reduced. It is accelerated, and the partition through-hole 7 can be blocked more effectively.

In the present embodiment, when the second sleeve 20 fits the second sleeve 20 to the first sleeve 10 , the lower end of the first sleeve 10 is an annular projection 28 of the second sleeve 20 . The fitting of the second sleeve 20 to the first sleeve 10 is stopped at the position in contact with the . In a state in which the second sleeve 20 fits the second sleeve 20 to the first sleeve 10 , the second sleeve 20 forming a fitting portion between the first sleeve 10 and the second sleeve 20 . ) of the upper end 22, the upper end 22 of the second sleeve 20, and the inner peripheral surface 15a of the step portion 15 of the first sleeve 10 facing along the axial direction of the sleeve 1 (15a) Gap (L) between

0 < L ≤ (first sleeve length/2) ... Equation (3)

to be. When L is large, the sleeve 2 expands in the direction on the floor, and upward expansion is inhibited. The effect is exhibited more favorably.

Further, the outer diameter C (FIG. 3B) of the main body portion 21 of the second sleeve 20 is equal to or equal to the inner diameter A of the main body portion 11 of the first sleeve 10 or (A) greater than With this configuration, the movement of the second sleeve 20 into the first sleeve 10 (movement upward in FIG. 4 ) is more reliably regulated at the step portion 15 . When the second sleeve 20 is expanded by heating in a state where the second sleeve 20 is fitted to the first sleeve 10, the upper end 22 of the second sleeve 20 is expanded and the step portion 15 ), the upward expansion of the second sleeve 20 is regulated by abutting it. As a result, the inward expansion of the second sleeve 20 in a direction perpendicular to the axial direction of the second sleeve 20 in the exposed portion of the second sleeve 20, particularly perpendicular to the axial direction, and inward of the second sleeve 20 is reduced. It is accelerated, and the partition through-hole 7 can be blocked more effectively.

Preferably, in a state in which the second sleeve 20 is fitted to the first sleeve 10, the first sleeve 10, which is the facing circumferential surface of the first sleeve 10 and the second sleeve 20, is tightened. The inner peripheral surface 19 of the neck portion 16 and the outer peripheral surface 24 of the main body portion 21 of the second sleeve 20 are in contact. Preferably, the inner peripheral surface 19 of the enlarged diameter portion 16 of the first sleeve 10 and the outer peripheral surface 24 of the main body portion 21 of the second sleeve 20 are the inner peripheral surface 19 and the outer peripheral surface 24 of In the circumferential direction, the entire circumference is in contact. By this structure, the adhesiveness of the 1st sleeve 10 and the 2nd sleeve 20 at the time of a fire becomes high, the penetration of fire between the 1st sleeve 10 and the 2nd sleeve 20 is suppressed, and fire resistance is improved. do.

In addition, if the annular projection 28 is formed on at least one of the inner peripheral surface 19 of the enlarged diameter portion 16 of the first sleeve 10 or the outer peripheral surface 24 of the main body portion 21 of the second sleeve 20, desirable. As a result, the contact resistance between the inner circumferential surface 19 of the enlarged diameter portion 16 of the first sleeve 10 and the outer circumferential surface 24 of the body portion 21 of the second sleeve 20 increases, and the first sleeve 10 leads to the prevention of dropout.

The inner circumferential surface of the sleeve 1, that is, the inner circumferential surface 14 of the main body 11 of the first sleeve 10 and the inner circumferential surface 25 of the second sleeve 20 form an opening 6 (see Fig. 4), , acts as the partition through-hole 7 (refer to FIG. 5B). The size of the opening 6 is larger than the outer diameter of the pipe or wiring 8, and is a dimension through which the pipe or wiring 8 can be inserted. The piping includes various types of piping such as a water pipe, a refrigerant pipe, a heat medium pipe, a gas pipe, and an intake/exhaust pipe. The wiring includes various cables such as a power cable and a communication cable.

As shown to Fig.1, Fig.2(A), Fig.2(B), the upper end 12 of the 1st sleeve 10 covers the circumference|surroundings of several piping or wiring 8, and also divides through You may attach the cover member 30 arbitrarily so that the ball 7 may be blocked|occluded. The cover member 30 is provided with a hole 31 through which a pipe or wiring 8 is inserted. The cover member 30 serves as a fixing frame that fills the clearance between the first sleeve 10 and the pipe or wiring 8 . Preferably, when the cover member 30 is attached to the first sleeve 10 in a state where a pipe or wiring 8 is passed through the hole 31 of the cover member 30, the clearance is 10 to 100. Fill in %. The cover member 30 may be formed of a metal, or a molded object of a non-fireproof or fire-resistant resin composition may be sufficient as it. For example, the cover member 30 may be formed of a resin composition such as a vinyl chloride resin or rubber with or without a plasticizer, and a fire resistant resin composition containing a resin component such as butyl rubber having elasticity. may be formed. It may be colored to impart aesthetics. Moreover, the cover member 30 may be further given a finishing layer, such as coating, and coloring in order to provide aesthetics.

Next, the construction method of the division penetration structure using the sleeve 1 is demonstrated, referring FIG.5(A)-(D).

As shown in FIG. 5(A) , the sleeve 1 is fixed to the bottom base 3 . The fixing of the sleeve 1 to the bottom leg 3 is, for example, by passing the bolt 29 through the hole 27a of the attachment portion 27 of the lower end 23 of the second sleeve 20 to the bottom leg. (3) It is made by twisting it to the inside. At the position corresponding to the sleeve 1 of the bottom part of the form 4, the hole for inserting the piping or the wiring 8 (refer FIG.5(C)) is drilled. Next, as shown in FIG.5(B), the concrete 5 is poured into the floor foundation 3. As shown in FIG. In this figure, the thickness, ie, the height H, of the concrete 5 is equal to the distance from the upper end 12 of the first sleeve 10 to the lower end 23 of the second sleeve 20 . In this way, leaving the opening 6 inside the sleeve 1, the concrete 5 is poured around the outer side of the sleeve 1, and the partition penetration structure 40 is completed. The opening 6 of the sleeve 10 acts as a partition through-hole 7 .

Next, as shown in FIG.5(C), one or several piping or wiring 8 is implemented through the division through-hole 7 so that the concrete 5 may be penetrated. Here, the cover member 30 may be optionally attached to the upper end 12 of the sleeve 1 so as to cover the periphery of the plurality of pipes or wirings 8 and to close the partition through-hole 7 . It is preferable that the cover member 30 has closed more clearance gaps of the division through-hole 7 . Since the cover member 30 is in contact with the outer peripheral surface of the pipe or wiring 8 and closes the gap between the sleeve 10 and the pipe or wiring 8, the partition penetration structure 40 has a fire resistance property. give more Moreover, when the division penetration structure 40 of FIG. 5(C) is viewed from above, the cover member 30 covers the sleeve 1, and the sleeve 1 and the pipe or the wiring 8 around the pipe or wiring 8. Since the gap between the wirings 8 is closed, it acts as a blindfold and the inside of the division through hole 7 is not seen, and the aesthetics is maintained visually.

Next, in FIG. 5(C), when a fire occurs from the arrow direction under the layer of the partition penetration structure 40, as shown in FIG. 5(D), the second sleeve 20 is a fire. It expands by the heat of the concrete (5) and closes the path of the fire by filling the gap between the pipe or wiring (8). In this way, the sleeve 1 not only facilitates pouring of the concrete 5, but also exhibits fire resistance, and provides fire resistance to the division penetration structure 40. In this way, it can be confirmed that the refractory material is installed simultaneously with the installation of the sleeve 1 .

This invention is not limited to the said embodiment, It can change as follows.

Instead of being provided with the diameter-expanding part 16, the 1st sleeve 10 may be provided with the diameter-reduced-diameter part 33 as shown in FIG. In this case, the diameter-reduced portion 33 of the first sleeve 10 is fitted in the second sleeve 20, and in a state where the first sleeve is fitted to the second sleeve, a part of the body portion of the first sleeve is exposed . In this case, the body portion 11 is continuous with the reduced diameter portion 33 via the step portion 34, and the movement of the second sleeve 20 into the first sleeve 10 (upward movement in FIG. 6 ) ) is regulated by the circumferential surface of the step portion 34, that is, the outer peripheral surface 34a. Also in this case, preferably, the gap L between the outer peripheral surface 34a of the stepped portion 34 of the first sleeve and the upper end of the body portion of the second sleeve is 0 < L ≤ (first sleeve length/2) . In the present embodiment, a part of the diameter-reduced portion 33 of the first sleeve 10 and a part of the second sleeve 20 are overlapped with the first sleeve 10 and the second sleeve 20 overlapping each other ( 42) constitutes.

Instead of the first sleeve 10 having the enlarged diameter portion 16 or the reduced diameter portion 33 , as shown in FIG. 7 , the first sleeve 10 has an enlarged diameter portion 16 or reduced diameter portion 33 . You do not need to provide In this example, the first sleeve 10 consists of a body portion 11 having a constant diameter over the entire length, and the second sleeve 20 is fitted inside the first sleeve 10 . In the present embodiment, a part of the first sleeve 10 and a part of the second sleeve 20 constitute an overlapping portion 42 in which the first sleeve 10 and the second sleeve 20 overlap each other.

A part of the inner circumferential surface 14 of the first sleeve 10 and the outer circumferential surface 24 of the second sleeve 20 are fixed in contact with each other, and preferably, in a state in which the first sleeve and the second sleeve are fitted, 0 <(exposed area of the outer peripheral surface of the second sleeve/exposed area of the outer peripheral surface of the first sleeve) x 100 ≤ 100 is satisfied. Further, preferably, 10 ? (the volume of the body portion of the second sleeve)/(the sum of the volume of the first sleeve and the volume of the second sleeve) x 100 ? 80 is satisfied.

In addition, in the embodiment of Fig. 7, when a part of the inner circumferential surface 14 of the first sleeve 10 and the outer circumferential surface 24 of the second sleeve 20 are not fixed in contact with each other, the second sleeve 20 ) on the inner peripheral surface 14 of the first sleeve 10 , the second sleeve 20 approximately perpendicular to the axis 9 of the first sleeve 10 ), you may form the inner peripheral surface 44 which protrudes inward rather than the main-body part 21 of. In this case, in a state where the first sleeve 10 and the second sleeve 20 are fitted, the inner peripheral surface 44 protruding inward of the first sleeve 10 and the body portion 21 of the second sleeve 20 ), it is preferable that the gap L between the upper ends 22 is 0 < L ≤ (first sleeve length/2).

The sleeve (1) has, in addition to the first sleeve (10) and the second sleeve (20), having a body portion (37) fitted to the first sleeve (10) and/or the second sleeve (20) An annular (especially substantially cylindrical) third sleeve 36 may be provided. As shown in FIG. 8(A), the third sleeve 36 may be fitted on the first sleeve 10, and as shown in FIG. 8(B), under the second sleeve 20 may be fitted. The configuration of the third sleeve 36 may be the same as or different from that of the first sleeve 10 or the second sleeve 20 . In addition, the 3rd sleeve 36 may be inner-wrapped by the 1st sleeve 10 and/or the 2nd sleeve 20, and may be outer-wrapped.

An annular projection 28 may be formed in the first sleeve 10 .

The annular projection 28 may be omitted. Also in this case, the inner diameter A of the body portion 11 of the first sleeve 10 is smaller than the inner diameter B of the body portion 21 of the second sleeve 20, or equal to the inner diameter B, or , or if the difference between the inner diameter (B) and the inner diameter (A) is 8% or less of the inner diameter (A) even if it is larger than the inner diameter (B), if the second sleeve 20 is inserted into the first sleeve 10, the second sleeve The upper end 22 of the 20 abuts against the inner peripheral surface 15a of the stepped portion 15 of the first sleeve 10, so that the movement of the second sleeve 20 into the first sleeve 10 is restricted.

At least one of the body portion 11, the stepped portion 15, and the diameter-expanded portion 16 of the first sleeve 10 may be formed of a thermally expansible material. In particular, the body portion 11 of the first sleeve 10 may be formed of a material having a lower expansion coefficient upon heating than the body portion 21 of the second sleeve 20 . In other words, the ratio of the expansion ratio of the body portion 11 of the first sleeve and the body portion 21 of the second sleeve 20 is,

0 ≤ (expansion magnification of the first sleeve/expansion magnification of the second sleeve) <1 ... Expression (4).

In the above embodiment, the second sleeve 20 is fitted inside the first sleeve 10 , but the second sleeve 20 may be fitted outside the first sleeve 10 .

In addition to the sleeve 1 and the cover member 30, in order to improve fire resistance, any known fire-resistant filler, fire-resistant resin composition, fire-resistant sheet, or fire-resistant metal plate, etc. may be further used in the compartment penetration structure of the present invention. .

In the above embodiment, when pouring the concrete 5 in Fig. 5B, the concrete 5 is poured to the same level as the height of the sleeve 1, but so that the upper end of the sleeve 1 can be visually recognized , you may use the first sleeve 10 in which the height of the sleeve 1 is higher than the bottom thickness. The height of the concrete 5 may be lower than the height of the sleeve 1 .

In the above embodiment, assuming that the cross section of the partition through hole 7 is circular, the sleeve 1 and the cover member 30 have shown an embodiment in which the cross section is substantially circular in cross section, but the shape of the sleeve 1 is divided What is necessary is just to adapt to the shape of the through-hole 7, and when the division through-hole 7 has a substantially elliptical cross-section, the sleeve 1 and the cover member 30 may have a substantially elliptical cross-section, and the division through-hole 7 ) is a substantially rectangular cross-section, the sleeve 1 and the cover member 30 may be formed to have a rectangular cross-section.

The cover member 30 can be omitted if it can be confirmed that there is no problem in practical durability, such as a sound insulation property and a water leak, including fireproof performance. Moreover, as a cover member, you may use the cover member other than the cover member 30, a cover member, or a cap.

In the above embodiment, the example in which the sleeve 10 is constructed from above the floor has been described, but the sleeve 10 of the present invention can also be constructed from below the floor.

The sleeve of the present invention is not limited to walls such as floors (including not only the floors below the floors used as the relatively concrete flooring materials, but also ceiling floors) and sidewalls, and is applicable to structural members of any building. .

Hereinafter, the present invention will be described in more detail by way of Examples, but the present invention is not limited thereto.

Example

Hereinafter, the present invention will be described in detail with reference to the drawings by way of examples. In addition, the present invention is not limited in any way by these Examples.

Examples 1 to 5, Comparative Examples 1 to 2

A polyvinyl chloride (PVC) resin was used as the main material of the ring cover as the first sleeve. When providing thermal expansibility to a ring cover, "GREP-EG" by Tosoh Corporation was used as thermally expansible graphite. In addition, "ADT351" manufactured by ADT was used as the thermally expansible graphite of the expandable sleeve material as the second sleeve. The penetrating sleeves prepared in Examples 1 to 5 and Comparative Examples 1 to 2 were fixed to the plywood for concrete formwork or reinforcement using screws or wires. Concrete was poured into a mold, dried for 10 days, and a test specimen having a thickness of 600 × 1200 mm × 150 mm and a sleeve attached to the center was prepared.

In addition, the sleeve of Comparative Example 1 is constituted by only the second sleeve, and in the sleeve of Comparative Example 2, the entire second sleeve is covered by the first sleeve.

A PVC 100 VU tube (outer diameter 114 mm, thickness 3.1 mm, JIS standard K6741) was piped through the sleeve, and exposed at a depth of 300 mm below the bottom and 500 mm at the top of the bottom. The clearance between the sleeve and the through tube in the sleeve diameter was 34 mm. Table 1 shows the aspect ratio of the thermally expandable graphite and the composition of each formulation. In a table|surface, "-" shows that it does not contain. In addition, L (mm) in the table corresponds to L shown in Fig. 4, and the case where the lower end of the first sleeve is above the upper end of the main body of the second sleeve is + (plus), and the case where it is below is - (minus). ) was indicated.

(Formability)

In both Examples 1 to 5 and Comparative Examples 1 to 2, a long molded body with a beautiful surface can be injection-molded at 170 to 190 ° C. mm, 150 mm in height, and 5 mm in thickness) were obtained. There was no adhesion of the compound to the screw and mold after molding, and the moldability was good.

(aspect ratio)

The scale length of the photograph of thermally expansible graphite was measured using the SEM cross-sectional photograph, and it was converted and the aspect-ratio was computed.

(expansion multiplier)

A test piece (length 100 mm, width 100 mm, thickness 2.0 mm) prepared as a molded body of the thermally expansible refractory resin material of Examples 1 to 5 and Comparative Examples 1 and 2 obtained was supplied to an electric furnace, and heated at 600° C. for 30 minutes. Then, the thickness of the test piece was measured, and (thickness of the test piece after heating)/(thickness of the test piece before heating) was computed as expansion factor.

(residue hardness)

The heated test piece for which the expansion ratio was measured was supplied to a compression tester (manufactured by Kato Tech, "Finger Peeling Tester"), and compressed at a rate of 0.1 cm/sec with a 0.25 cm indenter to measure the stress at break.

(Shape retention of residues)

The hardness of the residue is an index of the hardness of the residue after expansion, but since the measurement is limited to the surface portion of the residue, it may not be an index of the hardness of the entire residue. was measured. The shape-retaining property of the residue was measured by visually observing the disintegration of the residue by holding both ends of the test piece for which the expansion ratio was measured and lifting it. A case in which the test piece was lifted without disintegration was evaluated as a pass (PASS), and a case in which the test piece was disintegrated and not lifted was evaluated as FAIL.

(fire resistance test)

The pipe was positioned so that each clearance between the sleeve body and the pipe was 10 mm or more, and it was heated in a horizontal furnace in accordance with the heating curve of ISO 834 for 2 hours. A case where the temperature of the 25 mm through-pipe on the floor is less than the initial temperature + 180 ° C. and no flame appears through it is evaluated as PASS. was evaluated as FAIL.

(Adhesiveness of residues)

The weight of the second sleeve before the fire resistance test and the weight of the second sleeve residue remaining in close contact with the penetrating portion after the fire resistance test were measured. The weight residual ratio of the 2nd sleeve after the fire resistance test with respect to the fire resistance test before was computed, and it was set as the measure of adhesiveness with concrete.

(impact resistance)

The sleeve was placed in an environment of -10°C for one week, and it was dropped naturally on the concrete floor from a position of 3 m in height to check whether there was any deformation or damage to the sleeve. Evaluation was performed with N3. A case in which there was no obvious deformation or damage visually was evaluated as PASS, and a case in which there was deformation or damage even once was evaluated as FAIL.

The measurement results of the expansion ratio of Examples 1 to 5 and Comparative Examples 1 to 2, the hardness of the residue, and the shape retentivity of the residue, and the fire resistance test are as shown in Tables 1 and 2. In Examples 1 to 5, the thermally expandable material was sufficiently expanded and the expansion residue was held firmly, and the fire resistance test was PASS, but in Comparative Examples 1 to 2, the residue was not firmly maintained and was FAIL. In Comparative Examples 1 and 2, the thermal insulation structure was not formed by the expansion residue, and the temperature of the pipe on the floor rose, and a hole was formed in the pipe, and a spark appeared.

Examples 6 to 10

A formulation containing the components of the formulation shown in Table 3 is supplied to an injection molding machine in the same manner as described above for Examples 1 to 5 and Comparative Examples 1 to 2, and is a cylindrical heat-expandable molded body at 170 to 190°C. The ring cover and the inflation sleeve were combined to form a molded sleeve.

As a resin component, in Example 6, a polyvinyl chloride resin (polymerization degree of 1000, referred to as "PVC"), and in Example 7 an ethylene-vinyl acetate copolymer resin (Evaflex EV360 manufactured by Mitsui DuPont Polychemical, referred to as "EVA") , in Example 8, ethylene-propylene-diene rubber (Mitsui EPT3092M manufactured by Mitsui Chemicals, referred to as “EPDM”), in Example 9, a bisphenol F-type epoxy monomer (“E807” manufactured by Yucca Shell) and a diamine curing agent (manufactured by Yuka Shell) "EKFL052") in a blending amount of 3: 2, an epoxy resin obtained by kneading and heat curing together with other mixing materials, and in Example 10, an olefinic thermoplastic elastomer (Mitsubishi Chemical Co., Ltd. Thermoran 3000, referred to as "TPO") was used did

In all of Examples 6 to 10, a long molded body with a beautiful surface could be injection molded at 170 to 190°C, and a ring cover and an expansion sleeve were combined to obtain a molded sleeve (inner diameter 148 mm, height 150 mm, thickness 5 mm). . There was no adhesion of the compound to the screw and mold after molding, and the moldability was good.

Moreover, in all of the molded objects of Examples 6-10, a comparatively high expansion ratio and high residue hardness were expressed similarly to Examples 1-5, and the fire resistance performance was PASS.

Claims (16)

A sleeve for forming a partition through-hole in a building, comprising:
A first sleeve having a hollow cylindrical body portion and a hollow cylindrical enlarged portion that is continuous with the main body portion and has an outer diameter or an inner diameter greater than that of the main body portion;
and a second sleeve having a thermally expansible body portion that can be fitted with an enlarged diameter portion of the first sleeve;
the body portion of the first sleeve is inflatable;
In a state in which the first sleeve and the second sleeve are fitted so that the inner circumferential surface of the enlarged diameter portion of the first sleeve and the outer circumferential surface of the body portion of the second sleeve are in contact with each other, at least a portion of the body portion of the second sleeve is exposed. The method of claim 1,
The ratio of the expansion ratio of the body part of the first sleeve to the expansion ratio of the body part of the second sleeve,
0 ≤ (expansion ratio of the body part of the first sleeve/expansion ratio of the body part of the second sleeve) < 1
In, sleeve. The method of claim 1,
The sleeve, wherein 0 < (exposed area of the outer circumferential surface of the second sleeve/exposed area of the outer circumferential surface of the first sleeve) × 100 ≤ 100 in a state where the first sleeve and the second sleeve are fitted. The method of claim 1,
10 ≤ (volume of the body portion of the second sleeve)/(sum of the volume of the first sleeve and the volume of the second sleeve) x 100 ≤ 80; The method of claim 1,
wherein the outer diameter of the body portion of the second sleeve is equal to or greater than the inner diameter of the body portion of the first sleeve. The method of claim 1,
(i) the inner diameter of the body portion of the first sleeve is smaller than the inner diameter of the body portion of the second sleeve;
(ii) the inner diameter of the body portion of the first sleeve is equal to the inner diameter of the body portion of the second sleeve;
(iii) the inner diameter of the body portion of the first sleeve is greater than the inner diameter of the body portion of the second sleeve, and the difference between the inner diameter of the body portion of the second sleeve and the inner diameter of the body portion of the first sleeve is 8% or less of the inner diameter of the body portion of the first sleeve to be,
A sleeve satisfying any of (i) to (iii). The method of claim 1,
The end of the first sleeve or the second sleeve forming a fitting portion of the first sleeve and the second sleeve, and the end of the first sleeve or the second sleeve and the second sleeve or the first sleeve facing along the axial direction of the sleeve The gap (L) between the faces of
0 < L ≤ (first sleeve length/2)
In, sleeve. The method of claim 1,
A sleeve, wherein an annular member having one or a plurality of attachment portions is formed at one end of an outer peripheral surface of the main body portion of the first sleeve and/or the second sleeve. The method of claim 1,
A sleeve in which an annular projection protruding from the main body is formed at a position spaced apart from the end of the main body of the first sleeve and/or the second sleeve. The method of claim 1,
A sleeve further comprising a third sleeve fitted to the first sleeve or the second sleeve. A partition-through structure comprising:
floor or wall,
A partition penetration structure provided with the sleeve according to any one of claims 1 to 10 provided on a floor or a wall. 12. The method of claim 11,
The partition penetration structure further comprising a pipe or wiring disposed within the sleeve. A fire-resistant filling structure comprising:
The sleeve according to any one of claims 1 to 10;
a pipe or wiring disposed within the sleeve;
A fire resistant filling structure having a fixed frame mounted to a first sleeve. delete delete delete

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