JP4088201B2 - Fireproof coating material and fireproof coating method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fireproof coating material and a fireproof coating method for protecting a steel frame from fire.
[0002]
[Prior art]
When building a building having steel frames, the strength of steel materials suddenly decreases when exposed to high temperatures. Therefore, it is necessary to protect the steel beams from fire and the like. For this reason, it is stipulated by law that a fireproof coating material that protects the steel beam from high temperatures is applied to the surface of the steel beam at a specified thickness. In the case where an opening such as a sleeve hole is formed in the steel beam, it is necessary to protect the opening end face of the opening from high temperature, and thus the fireproof coating material is also sprayed on the opening end face of the opening. Conventionally, when a fireproof coating material is sprayed on the opening end face of the opening, the fireproof coating material is directly sprayed on the opening end face of the opening in the same manner as the fireproof coating material is sprayed on the surface of the steel beam.
[0003]
In recent years, a method has been proposed in which a penetration sleeve material excellent in fire resistance performance obtained by compression-molding a ceramic material is attached to an opening formed in a steel beam. This is a method in which a penetrating sleeve material is formed in accordance with the shape and size of the opening, the penetrating sleeve material is inserted into a predetermined opening, and the penetrating sleeve material is fixed by a fixed hardware. According to this method, the opening end face of the opening is protected from a high temperature such as fire by the penetration sleeve material (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
JP 10-140705 A (page 2-4, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, in the former conventional method described above, the thickness of the steel beam is thin, so that the opening end face width of the opening is narrow, and there is a problem that the fireproof coating material cannot be sprayed sufficiently. In addition, the thickness of the fire-resistant coating material is surely grasped in order to check whether the fire-resistant coating material has a prescribed thickness stipulated by laws and regulations by inserting a pin or the like into the sprayed fire-resistant coating material. There is a problem that the fire resistance effect is not certain. Furthermore, when piping is inserted into the opening covered with the fireproof coating material, there is a problem that the fireproof coating material is likely to be damaged and dropped due to interference of the piping, and the fireproof performance may not be maintained. .
[0006]
Further, in the latter conventional method described above, since a through sleeve material suitable for the shape and size of the opening must be formed, when many types of openings can be opened, many types of through sleeve materials are used. There is a problem that it is necessary to prepare. Further, since the penetrating sleeve material is a cylindrical member, it is difficult to carry a large number of them, and there is a problem that a considerable space is required for storage. Furthermore, there is a problem that the cost of manufacturing the penetration sleeve material is high.
[0007]
In the present invention, the above-described conventional problems are taken into consideration, and the thickness suitable for the required fire resistance performance at the opening end face of the opening can be reliably ensured, and the thickness of the fireproof coating material can be confirmed in advance. An object of the present invention is to provide a fireproof coating material capable of easily confirming the thickness of the fireproof coating material applied to the opening end face of the opening, and to improve the certainty of the fireproof effect of the fireproof coating material. Moreover, it aims at providing the fireproof coating | covering material which is processed according to an opening part and can respond to various opening parts. An object of the present invention is to provide a fireproof coating material that can be stored in a site where it is difficult to secure a wide storage place by making it possible to store in a narrow storage place. Moreover, it aims at maintaining fireproof performance by setting it as the fireproof coating material which is hard to lose | delete. It is another object of the present invention to provide a fireproof coating material that is made of a lightweight member and that can reduce the burden when the fireproof coating material is transported or attached. Furthermore, it aims at providing the fireproof coating material which can aim at reduction of cost by comprising with simple and cheap material.
[0008]
In addition, it is possible to cope with openings of various shapes or sizes, and by using a fireproof coating material that can be flexibly adapted to the situation in the field, it is possible to eliminate the trouble of preparing various types of fireproof coating materials. The object is to provide a coating method.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is a fireproof covering material having a foldable belt-like fireproof heat insulating portion which is disposed opposite to an opening end face of an opening formed in a steel frame and protects the opening end face from a high temperature. The surface of the refractory heat insulating portion is covered with a non-combustible metal foil.
[0010]
With such a feature, the fireproof coating material is easily applied to the opening end surface of the opening by disposing the fireproof coating material so as to face the opening end surface of the opening. Moreover, the surface of the applied fireproof coating material is protected by a nonflammable metal foil. In addition, since the fireproof coating material is foldable, it is deformed on-site according to the construction site, and the fireproof heat insulating member is wound in a roll shape or a band shape and stored in a compact form. Moreover, since a fireproof heat insulation part and a nonflammable metal foil are lightweight materials, a fireproof coating material becomes lightweight. Furthermore, since the fireproof covering material has a simple structure in which the fireproof heat insulating portion is covered with a nonflammable metal foil, it is manufactured at a low cost.
[0011]
According to a second aspect of the present invention, there is provided the fireproof covering material according to the first aspect, wherein an adhesive portion to be adhered to the opening end surface is formed on the upper surface of the fireproof heat insulating portion.
[0012]
With such a feature, the fireproof coating material is disposed to face the opening end surface by sticking the adhesive portion to the opening end surface.
[0013]
The invention according to claim 3 is the fireproof coating material according to claim 2 , wherein at least one of the upper surface of the fireproof heat insulating portion on both sides of the adhesive portion and the both side surfaces of the fireproof heat insulating portion is covered with the steel frame material. The adsorbing part adsorbing to the spraying material is coated on the non-combustible metal foil.
[0014]
Due to such a feature, the spray material sprayed on the steel frame and the fireproof coating material arranged opposite to the opening end face are brought into close contact with each other, and no gap is generated between the spray material and the fireproof coating material.
[0015]
According to a fourth aspect of the present invention, the fireproof coating material according to any one of the first to third aspects is disposed in the opening formed in the steel frame so as to face the opening end face of the opening, and the opening A fireproof covering method for protecting the open end face from high temperature,
The fireproof coating material is bent with the upper surface facing outward to form the fireproof coating material into a cylindrical shape, the fireproof coating material is inserted into the opening, and the opening end surface of the opening is covered with the fireproof coating material A fireproof coating method characterized by:
[0016]
With such a feature, the fireproof coating material is deformed on site in accordance with the situation of the construction site, and the fireproof coating material is easily applied to the opening end face of the opening.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the fireproof covering material according to the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a cross-sectional view of a steel beam 1 having a structure (not shown). As shown in FIG. 1, the steel beam 1 is a steel frame made of H-shaped steel, and a slab 2 made of reinforced concrete is formed above the steel beam 1. The surface of the steel beam 1 is covered with a fire-resistant coating material 3 made of, for example, dry spray rock wool, and the spray material 3 is formed to have a thickness suitable for the required fire resistance.
[0019]
A circular opening 5 is formed in an intermediate portion of the web 4 of the steel beam 1, and a cylindrical fireproof covering material 6 is inserted through the opening 5. The cylindrical fireproof coating material 6 is formed in a cylindrical shape so that the upper surface becomes the outer periphery by bending the belt-shaped fireproof coating material 6, and the fireproof coating material 6 is wound and stored in a roll shape. . The center of the outer peripheral surface of the cylindrical fireproof covering material 6 is joined to the spraying material 3 and the opening end face 5a of the opening 5, respectively. (Ceiling piping, wiring, ducts, cable racks, etc.) are inserted.
[0020]
FIG. 2 is a perspective view of the above-described fireproof coating material 6, and FIG. 3 is a cross-sectional view of the fireproof coating material 6. As shown in FIG. 2 and FIG. 3, the fireproof covering material 6 includes a foldable belt-shaped fireproof heat insulating portion 8, a thin flat nonflammable metal foil 9, and an adhesive having adhesiveness attached to the opening end surface 5 a. It is comprised from the part 10 and the adsorption | suction part 11 adsorb | sucked to the spraying material 3. FIG. The refractory heat insulating portion 8 is formed by stacking thin strip-like ceramic fibers in a plurality of layers, and the number of layers can be changed according to the required fire resistance performance.
[0021]
An incombustible metal foil 9 is coated on the upper surface of the refractory heat insulating portion 8, the lower surface of the refractory heat insulating portion 8, and both side surfaces of the refractory heat insulating portion 8. The incombustible metal foil 9 is formed in a cover shape having a square cross section, and the incombustible metal foil 9 is formed so as to surround the refractory heat insulating portion 8. In the center of the upper surface of the refractory heat insulating part 8 (non-combustible metal foil 9), an adhesive part 10 is formed in a band shape, and the adhesive part 10 is made of a double-sided adhesive tape or the like. An incombustible metal foil 9 that covers the upper surface of the refractory heat insulating portion 8 on both sides of the adhesive portion 10 and the both side surfaces of the refractory heat insulating portion 8 is covered with an adsorbing portion 11 having a waterproof performance made of, for example, butyl rubber tape.
[0022]
Next, a fireproof coating method using the fireproof coating material 6 having the above-described configuration will be described.
[0023]
First, the fireproof covering material 6 is cut in accordance with the inner peripheral length of the opening 5 formed in the steel beam 1. And the fireproof covering material 6 is bend | folded in the shape suitable for the shape of the opening part 5, and it changes into a cylinder shape. At this time, the refractory coating material 6 is deformed with the upper surface thereof as the outer periphery so that the adhesive portion 10 comes to the outside. Next, the fire-resistant covering material 6 formed in a cylindrical shape is inserted into the opening 5, the adhesive portion 10 is adhered to the opening end surface 5 a of the opening 5, and the tubular fire-resistant covering material 6 is placed in the opening 5. The opening end face 5 a of the opening 5 is covered with the fireproof covering material 6.
[0024]
Next, the spray material 3 is sprayed to the steel beam 1 with a predetermined thickness, and the steel beam 1 is covered with the spray material 3. At this time, the spraying material 3 is sprayed also on the outer peripheral surfaces of both ends of the cylindrical fireproof coating material 6 protruding from the opening 5 to adsorb the adsorbing portion 11 and the spraying material 3, and the fireproof coating material 6 and the spraying material. 3 are integrally formed. Next, the opening penetrating material 7 is inserted into the cylindrical fireproof coating material 6 disposed in the opening 5, and the opening penetrating material 7 is installed below the slab 2.
[0025]
According to the fireproof coating material 6 having the above-described configuration, since the fireproof coating material 6 is disposed so as to face the opening end surface 5a of the opening 5, the fireproof coating material 6 can be easily formed on the opening end surface 5a of the opening 5. Applied. As a result, a thickness suitable for the required fire resistance performance at the opening end surface 5a of the opening 5 can be reliably ensured, and the thickness of the fireproof coating material 6 is confirmed in advance to be applied to the opening end surface 5a of the opening 5. The thickness of the fireproof coating material 6 can be easily confirmed.
[0026]
Moreover, since the fireproof covering material 6 is composed of a foldable belt-shaped fireproof heat insulating portion 8 and the fireproof covering material 6 is foldable, the belt-shaped fireproof covering material 6 is adapted to the shape and size of the opening 5 on site. While being deformed, the fireproof covering material 6 is rolled into a roll or a band to be stored in a compact form. As a result, even when there are various types of openings 5, it can be constructed with one kind of fireproof covering material 6 and can be stored at a site where it is difficult to secure a wide storage location.
[0027]
Moreover, since the refractory heat insulating portion 8 is configured to be covered with the incombustible metal foil 9, the surface of the refractory coating material 6 is protected by the incombustible metal foil 9. This makes it difficult for the fireproof covering material 6 to be lost when the opening penetrating material 7 is inserted into the tubular fireproof covering material 6, and the fireproof performance of the opening end surface 5 a of the opening 5 can be maintained. Moreover, since the fireproof heat insulation part 8, the nonflammable metal foil 9, the adhesion part 10, and the adsorption | suction part 11 are lightweight materials, the fireproof coating material 6 becomes lightweight. As a result, the burden on the worker when attaching or carrying the fireproof covering material 6 can be reduced. Moreover, since the fireproof covering material 6 has a simple configuration, it is manufactured at a low cost. As a result, the construction cost can be reduced.
[0028]
Moreover, since the adhesion part 10 sticks to the opening end surface 5a, the fireproof coating material 6 is arrange | positioned facing the opening end surface 5a. Thereby, the fireproof covering material 6 can be easily arranged. Moreover, since the nonflammable metal foil 9 which covers the upper surface and both side surfaces of the refractory heat insulating portion 8 is covered with the adsorbing portion 11, the spray material 3 and the refractory coating material 6 are in close contact with each other, and the spray material 3 and the refractory coating material. There is no gap between the two. As a result, the steel beam 1 can be completely protected, and the fireproof covering material 6 can maintain a cylindrical shape by the adsorption force with the spray material 3.
[0029]
Moreover, according to the fire-resistant coating method having the above-described configuration, the fire-resistant coating material 6 is deformed in accordance with the shape of the opening 5, so that the belt-shaped fire-resistant coating material 6 has openings of various shapes and sizes. Arranged on the end face. Thereby, when the shape and size of the opening 5 are changed, it is possible to respond flexibly according to the situation at the site, and the trouble of preparing various types of fireproof covering materials 6 can be omitted.
[0030]
As mentioned above, although the embodiment of the fireproof coating material and the fireproof coating method according to the present invention has been described, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. . For example, in the above-described embodiment, the fireproof heat insulating portion 8 is configured by laminating a plurality of ceramic fibers, but the present invention may be a fireproof heat insulating portion that is not laminated, and for example, rock wool or the like can be bent. Certain other refractory insulation materials may be used.
[0031]
In the above-described embodiment, the adhesive portion 10 is formed in a band shape, but the present invention may be interspersed with a plurality of adhesive portions, or a plurality of thin line-like adhesive portions may be formed in parallel. Also good. Thereby, the area of the adhesion part 10 decreases and cost can be reduced. In the above-described embodiment, the adsorbing portion 11 is covered with the nonflammable metal foil 9 covered on the upper surface and both side surfaces of the refractory heat insulating portion 8, but the adsorbing portion 11 is covered on the upper surface of the refractory heat insulating portion 8. The nonflammable metal foil 9 may be covered only, or the adsorbing portion 11 may be covered only on the nonflammable metal foil 9 covered on both side surfaces of the refractory heat insulating portion 8. Thereby, the covering area of the adsorption | suction part 11 decreases and cost can be reduced.
[0032]
【The invention's effect】
As described above, according to the fire-resistant coating material according to the present invention described above, since the fire-resistant coating material is easily applied to the opening end face of the opening, it is ensured that the thickness suitable for the required fire-resistant performance at the opening end face of the opening is ensured. In addition, the thickness of the fireproof coating material applied to the opening end face of the opening can be easily confirmed by checking the thickness of the fireproof coating material in advance. In addition, since the fire-resistant coating material can be bent and the belt-shaped fire-resistant coating material is deformed in the field in accordance with the shape and size of the opening, one kind of fire-resistant coating is provided even when there are various openings. It can be constructed by. In addition, the fire-resistant coating material is foldable, and the fire-resistant coating material is rolled and rolled into a strip and stored in a compact form. Therefore, the fire-resistant coating material can be stored at sites where it is difficult to secure a large storage space. it can.
[0033]
In addition, the refractory heat insulating portion is configured to be covered with a non-combustible metal foil, and the surface of the refractory coating material is protected by the non-combustible metal foil. Performance can be maintained. Moreover, since the fireproof coating material is comprised from the lightweight material and the fireproof coating material is lightweight, the burden of the worker at the time of attaching or carrying a fireproof coating material can be reduced. Moreover, since the fireproof coating material has a simple configuration and is manufactured at a low cost, it is possible to reduce the construction cost of the fireproof coating material that protects the opening end face of the opening from high temperatures.
[0034]
Moreover, since a fireproof coating | covering material is arrange | positioned facing an opening end surface because an adhesion part sticks to an opening end surface, a fireproof coating | covering material can be arrange | positioned easily. Moreover, since the suction unit to the non-combustible metal foil covering at least one of both side surfaces of the upper or insulating refractory portion of insulating refractory portions on both sides of the adhesive portion is coated, the spraying material and the refractory coating material in intimate contact A gap does not occur between the spraying material and the fireproof coating material, and the steel frame material can be completely protected, and the fireproof coating material can maintain a predetermined shape by the adsorption force with the spraying material.
[0035]
Further, according to the fire-resistant coating method according to the present invention, since the fire-resistant coating material is deformed in accordance with the shape of the opening, the belt-shaped fire-resistant coating material is disposed on the opening end face of the opening having various shapes and sizes. When the shape or size of the opening is changed, it is possible to flexibly cope with the situation at the site, and the trouble of preparing various types of fireproof coating materials can be omitted.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining a fireproof covering material and a fireproof covering method according to the present invention.
FIG. 2 is a perspective view for explaining a fireproof coating material and a fireproof coating method according to the present invention.
FIG. 3 is a cross-sectional view of a fireproof coating material for explaining a fireproof coating material and a fireproof coating method according to the present invention.
[Explanation of symbols]
1 Steel beam (steel frame)
DESCRIPTION OF SYMBOLS 3 Spraying material 5 Opening part 5a Opening end surface 6 Fireproof covering material 8 Fireproof heat insulation part 9 Nonflammable metal foil 10 Adhesion part 11 Adsorption part

Claims (4)

A fireproof covering material that is disposed opposite to the opening end face of the opening formed in the steel frame and has a foldable belt-like fireproof heat insulating part that protects the opening end face from high temperature,
A fireproof coating material, wherein the surface of the fireproof heat insulating portion is coated with a nonflammable metal foil. The fireproof covering material according to claim 1,
The fireproof covering material is characterized in that a pressure-sensitive adhesive portion is formed on the upper surface of the fireproof heat insulating portion. The fireproof coating material according to claim 2 ,
At least one of the upper surface of the refractory heat insulating portion on both sides of the adhesive portion or the both side surfaces of the refractory heat insulating portion is covered with an adsorbing portion that adsorbs to the spray material covering the steel frame on the incombustible metal foil. Fireproof coating material characterized by A fireproof covering material according to any one of claims 1 to 3 is disposed in an opening formed in a steel frame so as to face the opening end face of the opening, and the opening end face of the opening is protected from high temperatures. A coating method comprising:
The fireproof coating material is bent with the upper surface facing outward to form the fireproof coating material into a cylindrical shape, the fireproof coating material is inserted into the opening, and the opening end surface of the opening is covered with the fireproof coating material A fireproof coating method characterized by:

Images