JP7215846B2 - Inspection system, inspection method, and refractory material - Google Patents

Description

The present invention relates to an inspection system and inspection method for inspecting structures such as buildings using RFID (Radio Frequency Identification) tags, and a refractory material used in these inspection systems and inspection methods.

The Japanese construction industry is facing serious challenges such as a shortage of engineers and many unproductive and inefficient operations. Therefore, in recent years, at construction sites, the use of the latest technology such as automatic construction equipment is being promoted, and 3D data is used in a series of processes from surveying, design, construction planning, construction, and inspection, improving productivity and improving labor efficiency. Efforts are being made to reduce the burden on workers. Such efforts are called i-Construction (registered trademark) and are promoted by the Ministry of Land, Infrastructure, Transport and Tourism.

In addition, inspections of structures such as buildings need to be carried out in many places, and the information of the inspection results is often enormous, and defects found in the inspection results are corrected by other contractors. Sometimes. For this reason, for example, Patent Literature 1 proposes collectively managing the inspection status of a building, items pointed out in the inspection, and the status of correction of the pointed items, etc., using an information management system.

JP 2017-041089 A

However, for example, inspection work to check whether building materials are constructed according to the design requires administrative examiners to visually check each one, which is a huge amount of work. Even if you build an information management system that can handle Moreover, construction materials that are hidden behind walls, floors, etc. cannot be visually checked, and it is not possible to confirm whether construction has been carried out as designed in a completed property.

In particular, filling materials for filling openings of structures such as buildings to form fireproof compartments and fireproof materials are often constructed in places that cannot be visually confirmed due to structural reasons, and the burden of inspection is high. big. In addition, after the building is completed, there is a risk of work such as having to crawl on the ceiling to approach the site. On the other hand, if the filling material for the openings and the fireproof material described above are not installed, the fire resistance and fire resistance of the structure will be insufficient, and furthermore, the standards for fire resistance and fire resistance under the Building Standards Act will be met. There is a risk that the requirements will not be satisfied, and the adverse effects caused by non-construction will be great. In addition, the traceability of building materials such as fillers and fireproof materials is also very important in the event of a recall.

Therefore, the present invention is an inspection system with high traceability that can safely and easily detect whether building materials such as fillers and fireproof materials have been constructed as designed without visual observation, and An object of the present invention is to provide an inspection method.

As a result of intensive studies, the present inventor found that the above problems can be solved by attaching an RFID tag to the building material to be inspected and constructing a system for reading the ID information, and completed the following invention. rice field. The present invention provides the following [1] to [11].
[1] An RFID tag attached to a building material that constitutes a part of a structure and is an object of inspection;
reading means for reading the ID information stored in the RFID tag,
An inspection system in which construction of the building material on the structure is detected by reading the ID information by the reading means.
[2] The inspection system according to [1] above, wherein the building material is selected from the group consisting of fireproof materials and filling materials for openings.
[3] The inspection system according to [1] or [2] above, which includes a writing means for writing ID information to the RFID tag.
[4] The inspection system according to any one of [1] to [3] above, wherein the position of the building material to which the RFID tag is attached is detected.
[5] The inspection system according to [4] above, which detects whether or not the construction material is constructed at the planned construction position of the construction material.
[6] In the above [4] or [5], displaying a drawing of the structure on a display device, and displaying on the drawing the scheduled construction position of the building material and the construction position where the building material is constructed. Inspection system as described.
[7] The inspection system according to any one of [1] to [6] above, comprising a storage device that associates and records the ID information read by the reading means and the information of the structure into a database. .
[8] A refractory material with an RFID tag, comprising a refractory material and an RFID tag attached to the refractory material.
[9] The refractory material with an RFID tag according to the above [8], wherein the refractory material is a thermally expandable refractory sheet.
[10] read the ID information stored in the RFID tag attached to the building material that constitutes a part of the structure and is the object of inspection;
An inspection method for detecting that the construction material is applied to the structure by reading the ID information.
[11] The inspection method according to [10] above, wherein the ID information and the information of the structure are associated with each other and stored in a database.

According to the inspection system of the present invention, it is possible to safely and easily detect whether building materials such as fillers and fireproof materials have been constructed as designed without visual observation, and the traceability of building materials is also enhanced.

1 is a schematic diagram showing an inspection system according to an embodiment of the present invention; FIG. It is a schematic diagram which shows an example of the test|inspection method which test|inspects whether building material is constructed. FIG. 4 is a schematic diagram showing another example of an inspection method for inspecting whether or not building materials have been constructed. It is a schematic diagram which shows an example of drawing of the structure displayed on a display apparatus. 1 is a schematic cross-sectional view showing one embodiment of a fireproof sheet with an RFID tag; FIG. FIG. 4 is a schematic cross-sectional view showing another embodiment of the RFID-tagged fireproof sheet.

Hereinafter, the inspection system and inspection method of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an inspection system according to one embodiment of the invention. The inspection system 10 includes an RFID tag 11 and an RFID reader (reading means) 20 . The RFID tag 11 is attached to a building material to be inspected, as will be described later.

(RFID tag)
The RFID tag 11 may be a known RFID tag, but normally includes an IC chip 12 and an antenna 13 . The IC chip 12 is equipped with a microcomputer, EEPROM, RAM, etc., and has a function as a recording medium for storing ID information. The IC chip 12 is, for example, a semiconductor chip of about 0.4 to 1 mm square.

The antenna 13 is formed by winding a metal material into a loop. The RFID tag 11 transmits ID information to the outside via the antenna 13 . The communication distance of the antenna 13 can be selected from several millimeters to several meters depending on the application. The antenna 13 can also receive various types of information from the outside, and the RFID tag 11 can also write tag information based on the received information.

The RFID tag 11 has a support 14 on which an IC chip 12 and an antenna 13 are mounted. Although the support 14 is sheet-shaped in FIG. 1, it may be of any shape. A known material used for RFID tags is used for the support 14, such as a magnetic substance and a resin film. Note that the RFID tag 11 may be of a passive type or an active type. In the case of the passive type, the RFID tag 11 receives radio waves emitted from the RFID reader 20 and converts the radio waves into electric power for driving. In the case of the active type, the RFID tag 11 contains a battery or the like.

The ID information stored in the RFID tag 11 is information for specifying the building material to which the RFID tag 11 is attached. The ID information is selected from building material product name, type, size, date of construction, date of manufacture, expiration date, contractor, shipping information (shipper, shipping date, etc.), arrival information (arrival date, etc.), and the like. Information about one or more may be included. The ID information may be a number assigned according to the type of building material so that the type of building material can be specified, or may be a lot number or the like, or may be of any form.

In this embodiment, the timing at which the RFID tag 11 is attached to the building material is not particularly limited, but it may be attached before the building material arrives at the construction site, or may be attached at the construction site.
Also, the ID information may be written to the RFID tag 11 at any timing. For example, the ID information may be written by a supplier or the like before the building material is received at the building site. Alternatively, it may be written by a contractor who constructs the building material after the building material is delivered to the construction site. If written by a contractor, the inspection system 10 will further comprise writing means for writing the ID information to the RFID tag 11 . Note that writing and reading of ID information are usually performed by one device, and it is preferable that the RFID reader 20 also performs writing. That is, the RFID reader 20 may also be used as an RFID writer.

The RFID tag 11 is attached to the building material to be inspected. Building materials form part of structures such as buildings. Building materials to be inspected are typically secondary materials. Subsidiary materials are materials other than members constituting the frame of a structure, such as beams, crosspieces, columns, steel frames, foundations, and concrete, and are constructed on the frame. The secondary materials are members that do not affect the structural strength of the structure, and it is easy for construction failures to occur. be. Therefore, problems due to forgetting to install secondary materials are less likely to occur. In addition, as will be described later, it is preferable that the building material is installed in a position that cannot be visually recognized in the completed structure, such as inside floor materials, wall materials, and ceiling materials.

Specific examples of the building materials include materials capable of imparting fire resistance and fire resistance to structures, and preferred specific examples thereof include fire-resistant materials and fillers for openings.
Refractory materials include gypsum board, calcium silicate board, cement board, metal plate, mortar, brick, ceramic wool, fireproof sheet, and composites thereof. Among these, fireproof sheets are preferred. Moreover, it is more preferable that the fireproof sheet is a thermally expandable fireproof sheet. Details of the fireproof sheet and the thermally expandable fireproof sheet will be described later.

A fireproof material is a member that, when applied to a structure, blocks the flow of air to improve the fireproof performance and fireproof performance of the structure. In addition, by installing these fireproof materials, the structure can be a quasi-fireproof structure, a fireproof structure, or a fireproof structure as stipulated by the Building Standards Act. It doesn't have to be fireproof. FIG. 2 is a specific example showing an example in which the building material is a refractory material, more specifically a refractory sheet 30 . As shown in FIG. 2, the fireproof sheet 30 constitutes, for example, a steel frame covering member that covers the periphery of the steel frame 31, but the fireproof sheet 30 is not limited to such a structure.

The structure may also have openings for passage of pipes, cables, and the like. In such an opening 32, the gap between the pipe 36 and the inner peripheral surface 32A of the opening 32 may be filled with a filler 35, as shown in FIG. For the filler 35, a fireproof material is generally used in order to ensure fire resistance and fire resistance, and a fireproof sheet is preferably used as the fireproof material. Note that FIG. 3 shows an example in which the pipe 36 is passed through the opening, but the same applies to other members such as cables.
The refractory sheet used as the filler 35 is generally wound around the pipes and cables in the opening 32 . When two or more cables or pipes are passed through the opening 32, it is preferable to wrap a fireproof sheet around the bundled two or more cables or pipes.

The refractory materials and fillers described above may be used as fire protection compartment treatments. The fireproof compartment treatment material is a building material for forming a fireproof compartment, and the same building materials as the fireproof materials described above are used, for example, gypsum board, calcium silicate board, cement board, metal plate, mortar, Bricks and the like are used to form fire compartment walls.
Also, openings in fire compartments are sometimes referred to as fire compartment penetrations. In order to form a fireproof compartment at the fireproof compartment penetration, it is necessary to surround the periphery of pipes, cables, etc. with the fireproof compartment treatment material, and therefore the filling material is used as the fireproof compartment treatment material.
The fireproof compartment is defined by the Building Standards Act, and is a compartment formed to prevent smoke and flames from spreading any further.

(RFID reader)
The RFID reader 20 reads the ID information stored in the RFID tag 11 by receiving radio waves emitted by the RFID tag 11 . The RFID reader 20 is usually provided with an information processing section composed of a CPU, an MPU, and the like. The information processing unit identifies the building material to which the RFID tag 11 is attached based on the read ID information. As a result, the RFID reader 20 can detect that a predetermined building material has been applied to the structure. For example, the RFID reader 20 causes a lamp (not shown) of the RFID reader 20 to emit light, emits a warning sound, or causes a display device (not shown) provided in the RFID reader 20 to display the detection. By doing so, the user is notified.

The configuration of the RFID reader 20 is not limited to the above configuration. For example, the RFID reader 20 is not provided with an information processing unit, and transmits the read ID information to an external processing device such as a computer system by wireless communication. , the external processing device may detect that a predetermined building material has been applied to the structure, and notify the user if necessary. Of course, the RFID reader 20 may be connected to an external processing device such as a computer system not only by wireless communication but also by wire.
Also, the RFID reader 20 may be attached to a mobile terminal such as a smart phone or a tablet-type terminal, for example. In that case, the portable terminal functions as an external processing device. As such a wearable RFID reader, AsReader (trade name, manufactured by Asterisk Co., Ltd.) is known as a commercially available product.

After construction, the building material (for example, the fireproof sheet 30) applied to the structure is covered with a wall material 33, a floor material 34, etc., as shown in FIGS. Visual confirmation becomes impossible unless the material 34 or the like is removed. In this embodiment, the building material (fireproof sheet 30) is attached with an RFID tag 11 storing ID information for identifying the building material.
Therefore, even if it cannot be visually confirmed, for example, if the RFID reader 20 is brought close to a place where the construction material is expected to be constructed, the RFID reader 20 can receive radio waves from the antenna 13. good. Thereby, the ID information is read by the RFID reader 20, and it can be detected that the construction material is being constructed. Therefore, in this embodiment, it is possible to easily and safely detect whether building materials such as fillers and fireproof materials have been constructed as designed without visual observation. In addition, the building materials can be easily traced by attaching the RFID tag 11, and the traceability is enhanced.

In addition to the type of building material, the ID information may include various information for identifying the building material, as described above. may be displayed on the display device. This makes it possible to present more detailed information about the building materials to the user. For example, if the ID information includes the date of construction, date of manufacture, expiration date, etc., the timing of replacement of building materials can be determined based on the ID information without visually confirming the building materials in a reinspection after construction. etc., can be understood.

Further, the RFID reader 20 may be carried by the user inside the structure as shown in FIGS. It may be detected whether or not the building materials have been designed by moving the moving body. Further, when the communication distance of the antenna 13 is long, the RFID reader 20 does not have to be moved.

(location information detection)
Preferably, the system 10 detects the location of the RFID tag 11 (ie, the building material to which the RFID tag 11 is attached). Here, the position information of the RFID tag 11 is detected by an RFID reader (reading means) 20, for example. The position information can be detected by analyzing the strength of the radio wave received by the RFID reader 20 and generated from the RFID tag 11, the response phase history information of the tag, and the like. The positional information is detected as relative positional information of the RFID tag 11 with respect to the RFID reader 20 . Such position information can be detected by using, for example, AsReader (trade name, manufactured by Asterisk Co., Ltd.).

Further, in the present system 10, the current position of the RFID reader 20 should also be identified. When the current position of the RFID reader 20 is specified, the absolute position information (for example, coordinate information such as latitude and longitude) of the RFID tag 11 can be detected from the relative position information.
The method of specifying the current position of RFID reader 20 is not particularly limited, and RFID reader 20 may have a receiver and the current position may be specified by a GPS signal received by the receiver. Also, the current position may be specified by receiving a beacon transmitted from a wireless LAN access point or other device. Alternatively, it may be specified manually by the user of the RFID reader 20 .

The RFID reader 20 preferably stores a drawing representing a structure, such as a design drawing of the structure, in advance in a storage medium included in the reader 20 . When the drawings are stored in a storage medium in advance, a drawing 40 of the structure is displayed on the display device provided in the RFID reader 20 as shown in FIG. (that is, the construction position P of the building material to which the RFID tag 11 is attached) can be displayed. In addition, the current position A of the RFID reader 20 may also be displayed on the drawing 40 . It should be noted that FIG. 4 shows an aspect in which the drawing 40 represents one floor of a building and the building material is a fire compartment treatment material for forming a fire compartment at the fire compartment penetration.

Furthermore, the RFID reader 20 may store in advance in a storage medium the planned construction position of the building material in the structure. Here, the planned construction position is a position determined at the design stage where building materials will be constructed. When the planned construction positions are stored in a storage medium, it is possible to detect whether building materials have been constructed at each planned construction position by detecting the actual construction positions of the building materials in the structure. become. If there is a planned construction position where construction materials have not been constructed, the user should be notified of this. The method of notification is to emit light from the lamp (not shown) of the RFID reader 20 as described above, emit a warning sound, or use building materials that are not installed in the display device (not shown) provided in the RFID reader 20. It is good to display that there is

Further, the RFID reader 20 may store both the drawing representing the structure and the planned construction position of the building material in the structure in advance in the storage medium. In this case, the planned construction position P0 may be displayed on the drawing 40 displayed on the display device, as shown in FIG. In addition, if the construction position P where the construction material is constructed is also displayed, it is possible to visually confirm the planned construction position P0 where the construction material is not constructed. If both the planned construction position P0 and the construction position P where the building material is constructed are displayed on the display device, the display method of the planned construction position P0 and the construction position P may be changed. For example, the planned construction position P0 and the construction position P may have different emission colors, and the planned construction position P0 may be continuously illuminated while the construction position P may be blinked.

In the above description, the storage medium of the RFID reader 20 stores the drawing representing the structure and the planned construction position, and the display device provided in the RFID reader 20 displays the drawing 40, the planned construction position P0, and the construction position P is displayed. However, the drawing representing the structure and the planned construction position may be stored in the storage medium of the external processing device. Further, the drawing 40 representing the structure, the planned construction position P0, and the construction position P may be displayed on the display device of the external processing equipment.

(database)
In the inspection system of the present invention, the ID information read by the RFID reader 20 may be recorded in a storage device (not shown) and stored in a database. The storage device may be provided in an external processing device or the like that is a device different from the RFID reader 20. For example, the ID information may be transmitted to the external processing device by wireless communication or the like and recorded in the storage device. . For example, the read ID information may be automatically transmitted to the external processing device and stored in the storage device.
At this time, in the database, the ID information is stored in the storage device in association with the structure information. For example, an ID number may be assigned to each structure, and the ID number and the ID information of the building materials attached to the structure may be associated with each other and stored in a database.
When the ID information and the information of structures are stored in a database in this way, it is possible to confirm what kind of construction material is used for each structure simply by accessing the database.

Also, as described above, when the construction position P is detected together with the ID information, the read ID information and the construction position P may be transmitted to and recorded in the storage device. In this case, in the database, the information on the construction position of each structure and the ID information of the building material attached to the construction position may be stored in association with each other to create a database.
By creating a database by associating construction positions of structures with building materials, it is possible to confirm what kind of building materials are constructed at each construction position of structures. In this case, if the planned construction positions and the building materials scheduled to be constructed at the planned construction positions are also stored in a database, it is possible to check whether the construction materials were constructed at each construction position as planned by simply accessing the database. can be confirmed.

(Building materials with RFID tags)
Next, building materials to which RFID tags are attached (RFID-tagged building materials) will be described in more detail. Below, an example in which the building materials are refractory materials will be described.
The RFID-tagged refractory material of the present invention comprises a refractory material and an RFID tag attached to the refractory material. The RFID tag and the refractory material are as described above, and the refractory material is preferably a refractory sheet as described above. Examples of the fireproof sheet include those composed of quasi-noncombustible materials or noncombustible materials such as metals and inorganic materials, and thermally expandable fireproof sheets, with the thermally expandable fireproof sheet being more preferred. The fireproof sheet has a thickness of, for example, 0.1 to 10 mm, preferably 0.2 to 5 mm, more preferably 0.3 to 4 mm. The fireproof sheet has flexibility and can be used by bending or bending.
In addition, incombustible materials are materials that do not burn for 20 minutes after the start of heating when heat from a normal fire is applied (Article 2, Item 9 of the Building Standards Law, Article 108 of the Enforcement Order of the Building Standards Law 2 No. 1). In addition, "quasi-noncombustible material" is a material that does not burn for 10 minutes after the start of heating when heat from a normal fire is applied (see Article 1, Item 5 of the Enforcement Order of the Building Standards Law).

A thermally expandable fireproof sheet is a fireproof sheet that expands when heated. A thermally expandable fireproof sheet thermally expands to form an expansion layer when exposed to high temperatures such as in the event of a fire, and is insulated by the expansion layer. The heat-expandable fireproof sheet has, for example, a heat-expandable resin layer made of a heat-expandable resin composition containing a resin component and a heat-expandable layered inorganic material. The thermally expandable resin layer becomes the expandable layer when heated.

The resin component includes thermoplastic resins, thermoset resins, rubber materials, and combinations thereof, of which thermoplastic resins are preferred. Examples of thermoplastic resins include polypropylene resins, polyethylene resins, poly(1-)butene resins, polyolefin resins such as polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, and polycarbonates. synthetic resins such as polyphenylene ether-based resins, acrylic resins, polyamide-based resins, polyvinyl chloride-based resins, phenol-based resins, polyurethane-based resins, and polyisobutylene.

Examples of thermosetting resins include polyurethane, polyisocyanate, polyisocyanurate, phenol resin, epoxy resin, urea resin, melamine resin, unsaturated polyester resin, and polyimide.
Rubber substances 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, acrylic rubber. , epichlorohydrin rubber, multi-vulcanized rubber, non-vulcanized rubber, silicon rubber, fluororubber, urethane rubber, and the like.
A resin component may be used individually by 1 type, and may use 2 or more types together.

The thermally expandable layered inorganic material contained in the thermally expandable resin composition expands when heated, but is not particularly limited. Examples include vermiculite, kaolin, mica, and thermally expandable graphite. can. Among these, thermally expandable graphite is preferred. Thermally expandable graphite having a particle size of 20 to 200 mesh, for example, is preferably used.

The thermally expandable resin composition preferably further contains an inorganic filler. The inorganic filler increases heat capacity and suppresses heat transfer when expanded, and acts like an aggregate to improve strength when expanded. The inorganic filler is not particularly limited, and examples thereof include alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, metal oxides such as ferrites, calcium hydroxide, Hydrous inorganics such as magnesium hydroxide, aluminum hydroxide and hydrotalcite, metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate and barium carbonate.
In addition to the above inorganic fillers, calcium sulfate, gypsum fiber, calcium salts such as calcium silicate, silica, diatomaceous earth, dawsonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, activated clay, sepiolite , imogolite, sericite, glass fiber, glass beads, silica-based balloon, 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 steel fiber, zinc borate, various magnetic powders, slag fiber, fly ash, dewatered sludge, and the like. These inorganic fillers may be used alone or in combination of two or more.
The particle size of the inorganic filler is preferably 0.5 μm to 100 μm, more preferably 1 μm to 50 μm.

The thermally expandable resin composition preferably contains 10 to 350 parts by weight of the thermally expandable layered inorganic material and 30 to 400 parts by weight of the inorganic filler with respect to 100 parts by weight of the resin component. Also, the total content of the thermally expandable layered inorganic material and the inorganic filler is preferably in the range of 50 to 600 parts by mass with respect to 100 parts by mass of the resin component.

The thermally expandable resin composition may further contain a phosphorus compound in order to increase the strength of the thermally expandable fireproof sheet when expanded and to improve fire prevention or fire resistance performance. The phosphorus compound is not particularly limited, and examples thereof include red phosphorus, phosphate esters such as tricresyl phosphate, phosphate metal salts such as sodium phosphate, ammonium polyphosphates such as ammonium polyphosphate, and melamine-modified ammonium polyphosphate. , methylphosphonic acid, dimethyl methylphosphonate and other phosphonic acids, dioctylphenylphosphonate, dimethylphosphinic acid, t-butylphosphonic acid and other phosphinic acids. A phosphorus compound may be used individually by 1 type, or may use 2 or more types together.

The thermally expandable resin composition may further contain antioxidants such as phenolic, amine, and sulfur antioxidants, metal damage inhibitors, antistatic agents, stabilizers, cross-linking agents, lubricants, and softening agents, as long as the physical properties of the composition are not impaired. , pigments, and the like.
The thermally expandable resin layer has, for example, a volume expansion coefficient of 3 to 50 times after heating for 30 minutes under a heating condition of 50 kW/m ² , preferably a volume expansion coefficient of 5 to 40 times. and more preferably in the range of 8 to 35 times.

5 and 6 are schematic diagrams showing embodiments of the RFID-tagged fireproof sheet 45, showing a specific example when the fireproof sheet is the thermally expandable fireproof sheet 30A.
The thermally expandable fireproof sheet 30A may consist of the thermally expandable resin layer 50 as shown in FIG. 5, but may be laminated with layers other than the thermally expandable resin layer 50. FIG. The thermally expandable fireproof sheet 30A may have, for example, a thermally expandable resin layer 50 and a substrate 51 provided on at least one surface of the thermally expandable resin layer 50, as shown in FIG.
Here, the base material 51 may be a combustible material layer, a quasi-noncombustible material layer, or a noncombustible material layer. Although the thickness of the base material 51 is not particularly limited, it is, for example, 5 μm to 1 mm. Materials used for the combustible material layer include, for example, one or more of cloth materials, paper materials, wood materials, resin films, and the like. When the substrate is a quasi-noncombustible material layer or a noncombustible material layer, examples of the material used include metals, inorganic materials, etc. More specifically, glass fiber, ceramic fiber, carbon fiber, A woven fabric or non-woven fabric made of graphite fiber may be used. Composite materials of these fibers and metals may also be used, and for example, aluminum glass cloth is preferable.
Also, the thermally expandable fireproof sheet 30A may have an adhesive layer (not shown). The pressure-sensitive adhesive layer may be provided on the substrate 51 or directly formed on the surface of the thermally expandable resin layer 50 .

In the RFID-tagged fireproof sheet, the RFID tag may be provided at any position on the fireproof sheet. However, it is preferable that the RFID tag 11 be adhered to the surface of the thermally expandable resin layer 50 as shown in FIG. The RFID tag 11 may be adhered to the surface of the thermally expandable resin layer 50 by the resin component of the thermally expandable resin layer 50 . In particular, when the thermally expandable resin layer 50 contains a thermoplastic resin, the RFID tag 11 is adhered to the thermally expandable resin layer 50 by thermal fusion. Note that even when the RFID tag 11 is adhered to the surface of the thermally expandable resin layer 50, the expandable fireproof sheet 30A may be further provided with a base material. When a base material is provided, the base material may be provided, for example, on the surface of the thermally expandable resin layer 50 opposite to the surface on which the RFID tag 11 is provided.

Moreover, when the base material 51 is provided on the expandable fireproof sheet, the RFID tag 11 is preferably arranged between the thermally expandable resin layer 50 and the base material 51 as shown in FIG. When the RFID tag 11 is arranged between the thermally expandable resin layer 50 and the base material 11, the RFID tag 11 is provided partly between the thermally expandable resin layer 50 and the base material 11, and the other part is , the thermally expandable resin layer 50 is adhered to the substrate 51 without the RFID tag 11 interposed therebetween. That is, a part between the thermally expandable resin layer 50 and the base material 11 becomes a closed space 53 by bonding the thermally expandable resin layer 50 and the base material 51 around it, and the space 53 An RFID tag 11 is placed. According to this aspect, the RFID tag 11 can be attached to the thermally expandable fireproof sheet 35A without being adhered to the thermally expandable fireproof sheet 30A.

When a fireproof sheet such as a heat-expandable fireproof sheet is applied to a structure as a building material, at least one RFID tag 11 should be attached to each building material. Therefore, when the fireproof sheets are adjusted in advance to the size when they are applied to a structure as a building material, one RFID tag may be provided on each fireproof sheet.

In addition, when the fireproof sheet is long or rolled up in a long length, the RFID tags 11 are attached to the fireproof sheet at predetermined distances in the longitudinal direction of the fireproof sheet. good. It should be noted that such a fireproof sheet is cut to a predetermined length (cutting length) in the length direction when it is constructed, but the predetermined distance is the length of time when the sheet is cut during construction. It is sufficient to make it equal to or less than the cutting length. As a result, an RFID tag is inevitably attached to each fire-resistant sheet after being cut, so that a fire-resistant sheet to which an RFID tag is not attached can be prevented from being applied to a structure as a building material.

REFERENCE SIGNS LIST 10 inspection system 11 RFID tag 12 IC chip 13 antenna 14 support 20 RFID reader (reading means, writing means)
30 Fireproof sheet 30A Thermally expandable fireproof sheet 31 Steel frame 32 Opening 33 Wall material 34 Floor material 35 Filler 36 Piping 40 Drawing 45 Fireproof sheet with RFID tag 50 Thermally expandable resin layer 51 Base material 53 Space A Current position P Construction position P0 Planned construction position

Claims (9)

An RFID tag that constitutes a part of the structure and is attached to the fireproof sheet to be inspected;
reading means for reading the ID information stored in the RFID tag,
The structure is provided with an opening for passing a pipe and/or a cable, the pipe and/or the cable is inserted through the opening,
The RFID tag is the fireproof sheet filled in the gap between the pipe and/or the cable and the inner peripheral surface of the opening, and the fireproof sheet constructed at a position that cannot be seen in the completed structure. attached to the seat ,
An inspection system in which construction of the building material on the structure is detected by reading the ID information by the reading means. 2. The inspection system according to claim 1, further comprising writing means for writing ID information to said RFID tag. 3. The inspection system according to claim 1, wherein the position of the fireproof sheet to which the RFID tag is attached is detected. 4. The inspection system according to claim 3 , wherein it is detected whether or not the fireproof sheet is installed at the position where the fireproof sheet is scheduled to be installed. 5. The inspection system according to claim 3 or 4 , wherein a drawing of the structure is displayed on a display device, and the planned construction position of the fire-resistant sheet and the construction position where the fire-resistant sheet is constructed are displayed on the drawing. 6. The inspection system according to any one of claims 1 to 5 , further comprising a storage device that associates the ID information read by the reading means with the information on the structure, forms a database, and records the information. A refractory material with an RFID tag that is installed in a position that cannot be seen in a completed structure,
A refractory material with an RFID tag, comprising: a refractory material that is a thermally expandable refractory sheet containing a resin component and thermally expandable graphite; and an RFID tag attached to the refractory material. An inspection method for inspecting a fireproof sheet constructed at a position that cannot be visually recognized in a completed structure,
The structure is provided with an opening for passing the pipe and/or the cable, the pipe and/or the cable is inserted through the opening, and the fireproof sheet is the pipe and/or the cable is filled in the gap between and the inner peripheral surface of the opening,
Read the ID information stored in the RFID tag attached to the fireproof sheet to be inspected, which constitutes a part of the structure,
An inspection method for detecting that the fireproof sheet is installed on the structure by reading the ID information. 9. The inspection method according to claim 8 , wherein the ID information and the information of the structure are associated with each other and formed into a database.

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