JP2022055984A - Bagged fire-resistant measure material - Google Patents

Abstract

To provide a bagged fire-resistant measure material having good workability and capable of exhibiting stable fire-resistant performance.SOLUTION: A bagged fire-resistant measure material (1) arranged in a clearance space between a through-hole formed in a partition body and a long body inserted into the through-hole is provided with: a flexible bag body (12); a paste-like first thermally expansive fire-resistant material (14) sealed inside the bag body (12); and a paste-like second thermally expansive fire-resistant material (16) sealed inside the bag body (12) and having lower consistency and expansion starting temperature than the first thermally expansive fire-resistant material (14).SELECTED DRAWING: Figure 2

Description

The present invention relates to a refractory material in a bag.

Generally, the internal space of a building is divided into a plurality of room spaces by partitions such as walls, floors, and ceilings. In order to dispose a long body such as a pipe or a cable over these a plurality of room spaces, a through hole may be formed in the compartment and the long body may be inserted through the through hole. In this case, post-treatment such as filling and closing the gap space between the through hole and the long body is required. For example, in order to prevent the spread of fire when a fire breaks out in a certain room space, it is necessary to take fire prevention measures in the gap space between the through hole and the long body.

For example, Japanese Patent Application Laid-Open No. 2005-73357 (Patent Document 1) contains a bag body (bag 14) and a paste-like heat-expandable fire-resistant material (paste-like fire-resistant material 12) contained therein. A fire protection structure using (fire protection treatment pad 10) is disclosed. The refractory material in the bag is wound around the long body on the opening side of the support member (reception metal fitting 22) installed in the through hole of the compartment, and then pushed into the through hole (support member). Then, the refractory member in the bag fills the gap space created between the inner surface of the through hole and the outer surface of the elongated body while being supported by the support member.

However, the refractory material in a bag of Patent Document 1 may flow out before the paste-like heat-expandable refractory material thermally expands when the bag body is melted by the heat at the time of a fire. The outflow of the heat-expandable refractory material is not preferable because it leads to destabilization of the fire resistance performance.

Japanese Unexamined Patent Publication No. 2005-73357

It is desired to realize a fireproof material in a bag that has good workability and can exhibit stable fire resistance.

The refractory material in a bag according to the present invention is
A bag-filled refractory material placed in the gap space between a through hole formed in a building compartment and a long body inserted through the through hole.
With a flexible bag body,
The paste-like first heat-expandable refractory material enclosed inside the bag body,
A paste-like second heat-expandable refractory material, which is enclosed inside the bag together with the first heat-expandable refractory material and has a lower consistency and expansion start temperature than the first heat-expandable refractory material.
To prepare for.

According to this configuration, since the first heat-expandable refractory material and the second heat-expandable refractory material, which are both in the form of paste, are enclosed in a flexible bag body, the refractory material in the bag can be deformed freely. can do. By using such a refractory material in a bag, it is possible to close the gap space between the through hole and the long body with good workability. In the event of a fire, the second heat-expandable refractory material will start thermal expansion earlier than the first heat-expandable refractory material, but the second heat-expandable refractory material has a relatively low consistency. Even if it flows out, the amount of outflow can be kept small. Then, the second heat-expandable refractory material after thermal expansion blocks the relatively high-density first heat-expandable refractory material that thermally expands with a delay and suppresses its outflow. As a result, the outflow of both the paste-like first heat-expandable refractory material and the second heat-expandable refractory material can be suppressed to a small extent, so that stable fire resistance can be exhibited.

Hereinafter, preferred embodiments of the present invention will be described. However, the scope of the present invention is not limited by the preferred embodiments described below.

As one aspect
It is preferable that the consistency of the first heat-expandable refractory material is 300 or more, and the consistency of the second heat-expandable refractory material is 100 to 300.

According to this configuration, when a recess is formed between a plurality of long bodies in a portion mainly containing a first heat-expandable refractory material having a consistency of 300 or more, the recess is formed. Also, it follows the shape and adheres closely, and the entire gap space can be appropriately closed. Further, in the portion where the second heat-expandable refractory material having a relatively low consistency of 100 to 300 is housed, the outflow of the first heat-expandable refractory material can be suppressed in the event of a fire.

As one aspect
The consistency of the second heat-expandable refractory material is preferably 100 to 200.

According to this configuration, the difference in consistency between the first heat-expandable refractory material and the second heat-expandable refractory material becomes large (specifically, it becomes 100 or more). Hard to mix. Therefore, the first heat-expandable refractory material and the second heat-expandable refractory material can appropriately play their respective roles. In particular, the second heat-expandable refractory material has a lower consistency of 200 or less, so that the outflow of itself can be suppressed to a smaller extent, and by extension, the outflow of the first heat-expandable refractory material can be further suppressed. Can be done.

As one aspect
It is preferable that the difference between the expansion start temperature of the first heat-expandable refractory material and the expansion start temperature of the second heat-expandable refractory material is 20 ° C. or more.

According to this configuration, the second heat-expandable refractory material can be more reliably thermally expanded than the first heat-expandable refractory material. Therefore, the outflow of the first heat-expandable refractory material can be suppressed more reliably.

As one aspect
The volume of the first heat-expandable refractory material is preferably 2 to 10 times the volume of the second heat-expandable refractory material.

According to this configuration, the amount of the first heat-expandable refractory material having a relatively high consistency is sufficiently larger than the amount of the second heat-expandable refractory material, so that a recess is made between the plurality of elongated bodies. When is formed, the entire gap space including the recess can be more appropriately closed.

Further features and advantages of the invention will be further clarified by the following illustration of exemplary and non-limiting embodiments described with reference to the drawings.

Breaking perspective view of the fire protection structure according to the embodiment Top view of the bagged refractory material of the embodiment Cross-sectional view of the refractory material in a bag Perspective view of fire protection unit Perspective view showing one aspect of the construction procedure of the fire protection structure Perspective view showing one aspect of the construction procedure of the fire protection structure Longitudinal section of fire protection structure Cross section of fire protection structure

An embodiment of the refractory material in a bag will be described with reference to the drawings. In this embodiment, an example in which the fireproof material 1 in a bag is applied to a fireproof unit 100 for the purpose of preventing the spread of fire and a fireproof structure using the same will be described. The bag-filled fireproof material 1 is inserted into a through hole 6H formed in a building compartment 6 together with a fireproof unit 100, and a gap between the through hole 6H and a plurality of long bodies 7 inserted therein. It is arranged in the space S.

In the present embodiment, the compartment 6 to which the fire protection structure is applied is a fire-resistant and fire-proof structure that divides the space in the building into a plurality of room spaces. As shown in FIG. 1, the compartment 6 of the present embodiment is a floor (or ceiling) that vertically partitions a plurality of room spaces. The compartment 6 may be a solid wall such as a reinforced concrete structure (RC) or a lightweight cellular concrete structure (ALC), or a hollow wall such as gypsum board. Of course, those having a structure other than these may be used as the compartment 6.

The compartment 6 is formed with a through hole 6H that penetrates the compartment 6 in the thickness direction (vertical direction in the illustrated example). In this embodiment, a circular through hole 6H is formed. However, the specific shape of the through hole 6H is not limited to such a configuration, and may be, for example, an elliptical shape, a polygonal shape, or various other shapes.

A long body 7 is inserted through the through hole 6H of the compartment 6. The elongated body 7 has an elongated structure extending in one direction, such as a linear body, a tubular body, and a strip-shaped body. Examples of such a long body 7 include piping and wiring for an air conditioner. In the present embodiment, the long body 7 includes a piping member 71 for circulating a refrigerant, a drain pipe 72 for discharging drain water, and an electric cable 73 for feeding power.

The piping member 71 has a fluid pipe 71A through which the refrigerant flows, and a covering material 71B that covers the periphery of the fluid pipe 71A. The fluid pipe 71A is, for example, a metal tubular member, and the covering material 71B is, for example, a heat insulating material made of synthetic resin, which is exteriorized by the fluid pipe 71A. The drain pipe 72 is, for example, a tubular member made of synthetic resin. The electric cable 73 is configured by providing, for example, an insulating coating material around a conductor wire. In the present embodiment, the plurality of long bodies 7 are inserted into the through hole 6H in a bundle. The plurality of elongated bodies 7 in a bundle are densely arranged in the through hole 6H so that their outer surfaces are in contact with each other. Then, a valley space V, which is a V-shaped recess, is formed over the outer surfaces of the elongated bodies 7 adjacent to each other (see also FIG. 7).

A fire protection structure is provided in the gap space S between the through hole 6H and the plurality of long bodies 7. The gap space S is a space that extends in a radial gap between the inner surface of the through hole 6H and the outer surface of each of the plurality of elongated bodies 7. The fire protection structure of the present embodiment is mainly realized by using the fire protection material 1 in a bag arranged in the through hole 6H. More specifically, the fire protection structure uses a fire protection unit 100 including a bagged fireproof material 1 and a sleeve member 8 that supports the bagged fireproof material 1 and is inserted into the through hole 6H. It has been realized.

The bag-filled refractory material 1 is a member for blocking the gap space S between the through hole 6H and the long body 7 in the event of a fire to prevent the spread of fire. As shown in FIGS. 2 and 3, the refractory material 1 in a bag includes a bag body 12, a paste-like first heat-expandable refractory material 14, and a paste-like second heat-expandable refractory material 16. ing.

The bag body 12 has flexibility. The bag body 12 can be formed of, for example, a resin film material (for example, a plastic film such as a polyethylene film or a nylon film). The bag body 12 is formed by, for example, superimposing two rectangular (rectangular shapes having a pair of long sides and a pair of short sides) film materials and sealing the peripheral edges on all four sides by heat fusion. can do. The bag body 12 has a sealing portion 12A along the peripheral edge portion thereof, and an accommodation space P is formed inside the bag body 12 as a space sealed by the sealing portion 12A.

The first heat-expandable refractory material 14 is enclosed inside the bag body 12. The first heat-expandable refractory material 14 is housed in a storage space P formed inside the bag body 12. The first heat-expandable refractory material 14 has thermal expansion (property that the volume increases by heating) and fire resistance (property that easily withstands heat, property that the melting temperature is high and it is difficult to burn). As the first heat-expandable refractory material 14, a known material can be used without particular limitation, and for example, a putty-like member (heat-expandable putty-like refractory material) can be used. However, the first heat-expandable refractory material 14 of the present embodiment contains a plasticizer (water in the case of water, oil in the case of oil) more than usual, and is in the form of a paste as a whole.

The paste-like first heat-expandable refractory material 14 is much softer than the known putty-like refractory material. Whereas the conventional putty-like refractory material has a consistency of about 50 to 80, the paste-like first heat-expandable refractory material 14 of the present embodiment has a consistency of, for example, 300 or more. The consistency of the first heat-expandable refractory material 14 is preferably, for example, about 300 to 400, and more preferably about 320 to 380.

The second heat-expandable refractory material 16 is also enclosed inside the bag body 12 together with the first heat-expandable refractory material 14. The second heat-expandable refractory material 16 is housed in the storage space P formed inside the bag body 12 together with the first heat-expandable refractory material 14. The second heat-expandable refractory material 16 also has heat-expandability and fire resistance. As the second heat-expandable refractory material 16, a known material can be used without particular limitation, and for example, a putty-like member (heat-expandable putty-like refractory material) can be used. However, the second heat-expandable refractory material 16 of the present embodiment has a higher content of the plasticizer (water in the case of water-based material, oil in the case of oil-based material) than usual, like the first heat-expandable refractory material 14. , It is a paste as a whole.

The paste-like second heat-expandable refractory material 16 is not as soft as the first heat-expandable refractory material 14, but is sufficiently softer than the known putty-like refractory material. That is, as the second heat-expandable refractory material 16, a heat-expandable refractory material having a lower consistency than that of the first heat-expandable refractory material 14 is used. The paste-like second heat-expandable refractory material 16 of the present embodiment has a consistency of, for example, 100 to 300. The consistency of the second heat-expandable refractory material 16 is preferably, for example, about 100 to 250, and more preferably about 100 to 200.

The consistency of the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 is preferably set so that the difference between them is 100 or more. When the difference in consistency is large, even when the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 are collectively enclosed in the accommodation space P inside the bag body 12 as in the present embodiment. There is an advantage that they are difficult to mix at the interface.

As described above, by enclosing the soft first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 in the flexible bag body 12 and using them, the bag-mounted refractory material 1 can be freely used. It is possible to transform it. Then, by deforming the refractory material 1 in the bag, the gap space S between the through hole 6H and the plurality of long bodies 7 including the valley space V extending over the outer surfaces of the long bodies 7 adjacent to each other. Can be easily filled. In particular, in the portion where the first heat-expandable refractory material 14 having a high consistency (preferably a consistency of 300 or more) is housed, the entire gap space S is appropriately adhered to the outer surface of each of the elongated bodies 7. Can be blocked.

In addition, in this specification, "consistency" is defined in JIS K2220 5.3 (concentration test method) by using the needle insertion degree meter defined in JIS K2235 5.4.2 (1). The needle and weight in the meter shall be replaced with a cone for measurement. More specifically, the above cone is vertically inserted into the sample for 5 seconds, the depth of the cone is measured in units of 0.1 mm, and the value obtained by multiplying this by 10 (dimensionless number) is referred to as "consistency". do. Here, the cone has the shape and dimensions shown in JIS K2235 5.10.2 (2), its mass is 102.5 ± 0.05 g, and the holder supporting the cone is JIS K2235 5.4. It is specified in .2 (3), and its mass is 47.5 ± 0.05 g.

The volumes of the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 collectively enclosed in the bag body 12 are not particularly limited, but at least the first heat-expandable refractory material 14 is larger. Larger is preferred. By increasing the volume of the first heat-expandable refractory material 14 having a higher consistency than that of the second heat-expandable refractory material 16, the bag-filled fire-resistant refractory material 1 can be more easily deformed, and the valley space V can be further increased. Can be filled properly. The tendency increases as the volume of the first heat-expandable refractory material 14 becomes relatively large, but it is preferable that the volume of the second heat-expandable refractory material 16 also secures a predetermined amount or more. The volume of the first heat-expandable refractory material 14 is preferably 2 to 10 times the volume of the second heat-expandable refractory material 16, and more preferably 3 to 6 times.

The first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 expand when heated by the heat of a flame or the like at the time of a fire, for example. The coefficient of thermal expansion of the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 may be, for example, about 2 to 40 times.

Regarding the expansion start temperature of the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16, at least the expansion start temperature of the second heat-expandable refractory material 16 is the expansion start temperature of the first heat-expandable refractory material 14. It is lower than the temperature. The expansion start temperature of the second heat-expandable refractory material 16 is preferably 20 ° C. or more lower than the expansion start temperature of the first heat-expandable refractory material 14, and more preferably 30 ° C. or more. The expansion start temperature of the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 can be adjusted by changing the respective materials and compositions. The expansion start temperature of the first heat-expandable refractory material 14 is preferably 180 ° C. to 280 ° C., more preferably 200 ° C. to 250 ° C. The expansion start temperature of the second heat-expandable refractory material 16 is preferably 170 ° C to 220 ° C, more preferably 150 ° C to 200 ° C.

As described above, in the refractory material 1 in the bag of the present embodiment, the paste-like first heat-expandable refractory material 14 and the paste-like paste-like first heat-expandable refractory material 14 having a lower consistency and expansion start temperature than the first heat-expandable refractory material 14. The second heat-expandable refractory material 16 is collectively enclosed inside the bag body 12. In such a refractory material 1 in a bag, two nozzles are inserted from the unsealed portion of the bag body 12 whose three sides are sealed, and the first heat-expandable refractory material 14 and the first from these are inserted. It can be obtained by injecting each of the two heat-expandable refractory materials 16 and then sealing the opening portion into which the nozzle has been inserted.

The sleeve member 8 is a member that is inserted into the through hole 6H of the compartment 6 and supports the refractory material 1 in a bag. As shown in FIG. 4, the sleeve member 8 includes a main body portion 81 and a flange portion 82 provided at the upper end portion of the main body portion 81. In the present embodiment, the main body portion 81 is formed as a curved plate-shaped portion curved in a C-shape having a cylindrical shape as a whole. The flange portion 82 is integrally formed with the main body portion 81 in a state of extending outward from the main body portion 81. The collar portion 82 is provided over the entire circumference. The sleeve member 8 may be made of resin, for example.

The sleeve member 8 and the refractory material 1 in a bag are integrated at the lower end of the sleeve member 8. In the present embodiment, the refractory material 1 in a bag is integrated with the sleeve member 8 at the sealing portion 12A on the side where the second heat-expandable refractory material 16 is enclosed. Further, the refractory material 1 in a bag is integrated along the inner surface of the main body 81 of the sleeve member 8. The integrating means for integrating the sleeve member 8 and the refractory material 1 in a bag is not particularly limited. As the integrating means, for example, an adhesive (adhesive layer), heat fusion, a clip member, a hook member, an eyelet member, or the like can be used.

Hereinafter, the construction procedure of the fire protection structure realized by using the fire protection unit 100 of the present embodiment will be described. First, as shown in FIG. 5, a bundle of long bodies 7 is arranged outside the through hole 6H in a state where a bundle of a plurality of long bodies 7 is arranged in the through hole 6H formed in the partition body 6 of the building. The sleeve member 8 is arranged so as to surround the circumference of the body 7. At this time, the sleeve members 8 are arranged around a bundle of long bodies 7 in a state where the ends of the C-shaped sleeve members 8 are separated from each other and expanded, and then the ends are reattached. Make it substantially cylindrical by bringing it closer. Further, the refractory material 1 in a bag has a substantially cylindrical shape inside the sleeve member 8.

In that state, the sleeve member 8 in which the bag-filled refractory material 1 is integrated is inserted into the gap space S between the through hole 6H and the long body 7 along the longitudinal direction of the long body 7. At this time, the sleeve member 8 and the refractory material 1 in a bag are integrated at the lower end portion of the sleeve member 8, and these are inserted from the integrated lower end portion. Even if the refractory material 1 is soft, it can be easily inserted all the way.

The sleeve member 8 is inserted until the flange portion 82 abuts on the surface of the compartment 6. In this state, as shown in FIG. 6, the upper end portion of the bag-filled refractory material 1 that is not integrated with the sleeve member 8 is pushed into the inside of the through hole 6H (the inside of the sleeve member 8). By this pushing operation, as shown in FIG. 7, the entire bag-filled refractory material 1 is pushed all the way in, and is arranged so as to surround the periphery of the long body 7 in the gap space S.

At this time, inside the bag-filled refractory material 1, the second heat-expandable refractory material 16 is arranged in a layer on the lower side (back side in the insertion direction), and the first thermal expansion is on the upper side (front side). The refractory material 14 is arranged in layers. Further, as shown in FIG. 8, a state in which the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 are also arranged in the valley space V extending over the outer surfaces of the elongated bodies 7 adjacent to each other. (FIG. 8 shows the position where the first heat-expandable refractory material 14 is arranged). Therefore, the gap space S between the through hole 6H and the elongated body 7 can be sufficiently filled including the plurality of valley spaces V.

When a fire breaks out in a building, the ambient temperature rises due to the heat of the flame, the covering material 71B constituting the long body 7 melts and burns, and the gap space S between the through hole 6H and the long body 7 is created. It may expand further. Even in this case, as the ambient temperature rises, the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 contained in the bagged refractory material 1 thermally expand, and the covering material 71B It is possible to fill the space created by melting and burning (in other words, to compensate for the increase in the gap volume). Therefore, it is possible to realize a fire protection structure that provides sufficient fire resistance with simple construction.

At this time, the second heat-expandable refractory material 16 arranged in a layer on the lower side has a lower expansion start temperature than the first heat-expandable refractory material 14, so that the second heat-expandable refractory material starts to expand first. Since the second heat-expandable refractory material 16 that thermally expands ahead has a lower consistency than the first heat-expandable refractory material 14, even if it flows down, the amount of outflow can be suppressed to a small level. Then, the second heat-expandable refractory material 16 after thermal expansion blocks the first heat-expandable refractory material 14 having a high consistency that thermally expands with a delay from below to suppress the outflow. Therefore, even if the first heat-expandable refractory material 14 flows down, the amount of outflow can be suppressed to a small level. As a result, the outflow of both the paste-like first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 can be suppressed to a small extent, and stable fire resistance can be exhibited.

[Other embodiments]
(1) In the above embodiment, a configuration in which two film materials are superposed and sealed on all sides by heat fusion to form a bag body 12 has been described as an example. However, the present invention is not limited to such a configuration, and for example, one film material may be folded in half and superposed, and heat-sealed on four sides or three sides excluding the crease portion to form the bag body 12.

(2) In the above embodiment, the configuration in which the consistency of the first heat-expandable refractory material 14 is 300 or more and the consistency of the second heat-expandable refractory material 16 is 300 or less has been described as an example. However, without being limited to such a configuration, for example, the consistency of both the first heat-expandable refractory material 14 and the second heat-expandable refractory material 16 may be 300 or less. In this case, for example, the consistency of the first heat-expandable refractory material 14 may be about 200 to 300, and the consistency of the second heat-expandable refractory material 16 may be about 100 to 200.

(3) In the above embodiment, it is mainly assumed that only the paste-like first heat-expandable refractory material 14 and the paste-like second heat-expandable refractory material 16 are enclosed inside the bag body 12. I explained. However, without being limited to such a configuration, as the refractory material 1 in a bag, in addition to the first heat-expandable fire-resistant material 14 and the second heat-expandable fire-resistant material 16, non-paste is added to the inside of the bag body 12. A material encapsulating a shaped filler (for example, an inorganic fiber, an inorganic sphere, etc.) may be used.

(4) In the above embodiment, a configuration in which the sleeve member 8 and the refractory material 1 in a bag are integrated has been described as an example. However, the sleeve member 8 and the refractory material 1 in a bag may be separated from each other and may be separately inserted into the through hole 6H without being limited to such a configuration. In such a case, a shape-retaining member made of, for example, a metal sheet material may be integrated into the bag body 12 so that the soft bag-filled refractory material 1 can be easily inserted. ..

(5) The specific configuration of the sleeve member 8 for supporting the bag-filled refractory material 1 in the through hole 6H described in the above embodiment is arbitrary. For example, the main body 81 may be formed in a substantially C-shaped cylinder having a larger frontage. Further, the main body portion 81 may have a penetrating portion. Further, the flange portion 82 may be divided into a plurality of portions and provided intermittently. Further, the sleeve member 8 and the refractory material 1 in a bag are integrated with each other in the main body 81, and the refractory material 1 in a bag protrudes inward from the main body 81 to the end (lower end). A support piece portion from below may be provided.

(6) In the above embodiment, a configuration in which the refractory material 1 in a bag is supported by a resin sleeve member 8 inside the through hole 6H has been described as an example. However, without being limited to such a configuration, the bag-filled refractory material 1 may be supported inside the through hole 6H by, for example, a support member made of a metal wire instead of the sleeve member 8. good. In this case, the support member may support the refractory material 1 in a bag via a backup material.

(7) In the above embodiment, inside the through hole 6H, the second heat-expandable refractory material 16 and the first heat-expandable refractory material 14 are two along the longitudinal direction (axial direction) of the elongated body 7. The explanation was made mainly assuming a configuration in which the components are arranged in layers. However, without being limited to such a configuration, for example, the second heat-expandable refractory material 16 and the first heat-expandable refractory material 14 are orthogonal to each other in the longitudinal direction of the elongated body 7 inside the through hole 6H. It may be arranged in two layers along the direction (diametrical direction). In this case, even if the first heat-expandable refractory material 14 is arranged radially inside (long body 7 side) and the second heat-expandable refractory material 16 is arranged radially outside (partition 6 side). It may be arranged in the opposite direction.

(8) In the above embodiment, the present invention is used as a fire prevention measure at a portion where the long body 7 is vertically inserted into the through hole 6H formed in the floor (or ceiling) that vertically divides a plurality of room spaces. An example to which the invention is applied has been described. However, without being limited to such a configuration, for example, fire prevention measures are taken at a portion where the elongated body 7 is horizontally inserted into the through hole 6H formed in the wall portion that horizontally divides a plurality of room spaces. Also, the present invention can be applied.

(9) The configurations disclosed in each of the above-described embodiments (including the above-described embodiment and other embodiments; the same shall apply hereinafter) shall be applied in combination with the configurations disclosed in the other embodiments as long as there is no contradiction. It is also possible to do. As for other configurations, the embodiments disclosed in the present specification are exemplary in all respects, and can be appropriately modified without departing from the spirit of the present disclosure.

1 Refractory material in a bag 6 Section body 6H Through hole 7 Long body 12 Bag body 14 First heat-expandable fire-resistant material 16 Second heat-expandable fire-resistant material S Gap space

Claims (4)

A bag-filled refractory material placed in the gap space between a through hole formed in a building compartment and a long body inserted through the through hole.
With a flexible bag body,
The paste-like first heat-expandable refractory material enclosed inside the bag body,
A paste-like second heat-expandable refractory material, which is enclosed inside the bag together with the first heat-expandable refractory material and has a lower consistency and expansion start temperature than the first heat-expandable refractory material.
A bag of refractory material. The bagged refractory material according to claim 1, wherein the first heat-expandable refractory material has a consistency of 300 or more, and the second heat-expandable refractory material has a consistency of 100 to 300. The bagged refractory material according to claim 1 or 2, wherein the difference between the expansion start temperature of the first heat-expandable refractory material and the expansion start temperature of the second heat-expandable refractory material is 20 ° C. or more. The bagged refractory material according to any one of claims 1 to 3, wherein the volume of the first heat-expandable refractory material is 2 to 10 times the volume of the second heat-expandable refractory material.

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