JP7374027B2 - Structural deterioration control system and its usage - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure deterioration control system for cracked concrete structures, etc., and a method for using the same.

Concrete structures used in bridges, tunnels, etc. may develop cracks over time due to fatigue, salt damage, alkaline aggregate reaction, etc. If cracks remain in place for a long period of time, rainwater, carbon dioxide, etc. can penetrate deep into the concrete through the cracks, corrode the reinforcing steel, and reduce the strength of the concrete itself, causing serious accidents such as bridges and tunnels collapsing. there is a possibility. Under these circumstances, a framework has been established to ensure that infrastructure, including concrete structures, is inspected once every five years.

Although it depends on the environmental conditions, leaving cracks untreated means that the concrete will continue to deteriorate, so it is desirable to be able to take some measures. For this reason, it is necessary to take repair measures at an early stage when cracks occur in concrete. As a method for repairing cracks in concrete, a surface treatment agent consisting of an aqueous solution containing an alkali metal silicate is applied and allowed to penetrate into the cracks, and then a putty material containing an inorganic filler dispersed therein is filled into the cracks. A method of repairing the problem by using a self-healing material (for example, Patent Document 1) and a method of applying a paste containing a self-healing material along the cracked part of concrete (for example, Patent Document 2) have been proposed.

Japanese Patent Application Publication No. 2010-001195 Japanese Patent Application Publication No. 2013-014453

As described in Patent Documents 1 and 2 above, the method of directly filling or applying a repair material to a cracked part requires the installation of a scaffold for work or the repair work of a specialist on a large scale. Construction will be required. On the other hand, in the maintenance and management of concrete structures in local governments, there are a relatively wide range of problems that inspectors have discovered during inspections, such as not being able to secure sufficient repair costs or ambiguous judgment of deterioration grade due to cracks. There was a problem that cracks could not be dealt with on the spot.

The present invention was made to solve the above problems, and provides a structure that can be easily constructed by an inspector who discovers deterioration such as cracks in the structure, and that can suppress deterioration of the structure during construction. A deterioration suppression system and a method of using the same are provided.

The structural deterioration suppression system of the present invention includes: a deterioration suppressing means that suppresses deterioration of the structure by being bonded to the surface of the structure; and a first information recording means that records information regarding the deterioration of the structure. , a heating means for heating the deterioration suppressing means, and the deterioration suppressing means is a member whose bonding force to the structure decreases when heated.

Further, a first method of using the structure deterioration control system of the present invention is a method of using the structure deterioration control system of the present invention, which inspects the structure and collects deterioration information of the structure. a step of determining whether or not the structure has deteriorated from the initial information; and a step of determining whether the structure needs to be repaired when it is determined that the structure has deteriorated. and a step of recording the initial information in the first information recording means when it is determined that the structure is deteriorated but does not require repair; a step of joining the deterioration suppressing means for suppressing deterioration of the structure to a deteriorated portion of the structure when it is determined that repair is not necessary; and a step of joining the deterioration suppressing means to the deteriorated part of the structure. a step of leaving the structure in a natural environment for a certain period of time; heating the deterioration suppressing means with the heating means after leaving the structure in the natural environment for a certain period of time; a step of reducing the bonding force; a step of separating the deterioration suppressing means from the structure after reducing the bonding force of the deterioration suppressing means; a step of separating the deterioration suppressing means from the structure; inspecting an object to obtain after-abandonment information including deterioration information of the structure, and recording the after-abandonment information in the first information recording means; and repairing the structure from the after-abandonment information. As a result of determining whether or not repair of the structure is necessary, if it is determined that repair is not necessary, a new deterioration suppressing means is reattached to the deteriorated part of the structure. and a step of causing.

Further, a second method of using the structure deterioration suppression system of the present invention is a method of using the structure deterioration suppression system of the present invention, which inspects the structure and collects deterioration information of the structure. a step of determining whether or not the structure has deteriorated from the initial information; and a step of determining whether the structure needs to be repaired when it is determined that the structure has deteriorated. a step of determining whether or not the structure has deteriorated, but when it is determined that repair is not necessary, adding code information to the initial information and recording the code information in the first information recording means; At the same time, the step of recording the initial information and the code information in the second information recording means; a step of bonding the deterioration suppressing means for suppressing deterioration of the structure; a step of leaving the structure to which the deterioration suppressing means is bonded in a natural environment for a certain period of time; , a step of heating the deterioration suppressing means by the heating means after being left in a natural environment to reduce the bonding force of the deterioration suppressing means to the structure; and reducing the bonding force of the deterioration suppressing means to the structure. Later, a step of separating the deterioration suppressing means from the structure, and after separating the deterioration suppressing means from the structure, inspecting the structure to obtain post-disposition information including deterioration information of the structure. At the same time, a step of recording the after-abandonment information in the second information recording means, a step of determining from the after-abandonment information whether or not repair of the structure is necessary, and a step of determining whether or not repair of the structure is necessary. As a result of the determination, if it is determined that repair is not necessary, the method includes a step of rejoining a new deterioration suppressing means to the deteriorated portion of the structure.

According to the present invention, a structure can be constructed by a structure inspector using a simple method immediately after inspection, can sufficiently suppress deterioration of the structure during construction, and can be easily re-inspected when necessary. It is possible to provide a material deterioration suppression system and a method of using the same.

FIG. 1 is a schematic diagram showing an example of a structure deterioration suppression system according to an embodiment. FIG. 2 is a schematic diagram showing another example of the structural deterioration suppression system according to the embodiment. FIG. 3 is a schematic cross-sectional view showing an example of the adhesive tape of the embodiment. FIG. 4 is a schematic cross-sectional view showing another example of the adhesive tape of the embodiment. FIG. 5 is a schematic cross-sectional view showing still another example of the adhesive tape of the embodiment. FIG. 6 is an example of a flowchart of a method of using the structural deterioration suppression system of the embodiment. FIG. 7 is a schematic cross-sectional view showing an example of a state in which the adhesive tape of the embodiment is bonded to a cracked part of concrete. FIG. 8 is a schematic cross-sectional view showing an example of a state in which the adhesive tape of the embodiment bonded to concrete is heated. FIG. 9 is a schematic cross-sectional view showing an example of a state in which the adhesive tape of the embodiment is peeled off from a cracked part of concrete.

(Structural deterioration control system)
An embodiment of the structure deterioration suppression system disclosed in this application will be described. The structure deterioration suppression system of the present embodiment includes a deterioration suppressing means that suppresses deterioration of the structure by being bonded to the surface of the structure, and a first information recording means that records information regarding the deterioration of the structure. and a heating means for heating the deterioration suppressing means, and the deterioration suppressing means is made of a member whose bonding force to the structure decreases when heated.

According to the structure deterioration control system of the present embodiment, a structure inspector can perform construction in a simple manner immediately after inspection, and can sufficiently suppress deterioration of the structure during construction. It can be easily re-checked from time to time.

The deterioration suppressing means and the first information recording means may be integrated. If they are integrated, the step of installing the deterioration suppressing means and the first information recording means on the structure can be easily performed.

Further, the first information recording means may be separate from the deterioration suppressing means and can be joined to the structure. If they are separated, the deterioration suppressing means can be easily manufactured.

The deterioration suppressing means is preferably an adhesive tape whose bonding strength decreases when heated. This is because the above-mentioned adhesive tape can be easily bonded to a structure.

Preferably, the first information recording means is a recording medium capable of recording at least one type selected from barcode information, QR code (registered trademark) information, electronic information, and magnetic information. This is because such information is easy to input and output.

The heating means is preferably at least one selected from a hot air emitting device, an infrared irradiation device, an electromagnetic induction device, and a microwave irradiation device. This is because these devices can easily heat the deterioration suppressing means.

The structure to be inspected is usually a cementitious structure formed from a material containing cement. In this application, cement structures include concrete structures and mortar structures.

The structure deterioration suppression system of the present embodiment further includes a second information recording means for recording information regarding the deterioration of the structure, and the second information recording means records information about the outdoor environment in which the structure is installed. It is preferable to place it in a different environment. Usually, the first information recording means is installed outdoors together with the structure, so the recorded information may be lost depending on the outdoor environment, but the second information recording means is installed outside the structure. This is because the recorded information is less likely to be lost because it is placed in an environment different from the outdoor environment in which it is installed.

Either one of the first information recording means and the second information recording means may be used, or both may be provided.

Specifically, the second information recording means is preferably at least one selected from a personal computer, a tablet, a smart phone, and a server. This is because the storage stability of information is excellent.

The adhesive tape includes a base material and an adhesive layer, the adhesive layer is a cement-based structure containing an adhesive, a side chain crystallized polymer or thermally expandable particles, and has a surface roughness Ra of 100 μm or less. The adhesive strength of the adhesive layer on the adhesive layer is 6N/10mm or more when measured in an environment of 23°C and 50% relative humidity as a 180° peel force measured according to the provisions of JIS Z0237, and the temperature When measured in an environment of 60° C. or higher and a relative humidity of 5% or lower, it is preferably 1 N/10 mm or lower. This is because the adhesive tape can be easily peeled off from the structure by heating.

Preferably, the adhesive layer further includes a material that can be heated by electromagnetic induction or microwave irradiation. This is because the adhesive tape can be heated using a simple heating method such as electromagnetic induction heating or microwave heating.

Further, the adhesive tape includes a base material, an adhesive layer, and a functional layer in this order, the adhesive layer includes an adhesive, and the functional layer includes a tack resin, a side chain crystallized polymer, or a heat-sensitive adhesive layer. The adhesive strength of the adhesive layer side to a cement structure containing expandable particles and having a surface roughness Ra of 100 μm or less is determined as a 180° peel force measured according to the provisions of JIS Z0237 at a temperature of 23°C and a relative humidity. When measured in an environment of 50%, it is 6N/10mm or more, and when measured in an environment of a temperature of 60°C or more and a relative humidity of 5% or less, it is 1N/10mm or less, and the tack on the functional layer side is It is preferable that the ball number is 5 or more in the ball tack test specified in JIS Z0237. This is because it is possible to prevent the adhesive tape from peeling off immediately after bonding, and the adhesive tape can be easily peeled off from the structure by heating.

Preferably, at least one selected from the adhesive layer and the functional layer further includes a material that can be heated by electromagnetic induction or microwave irradiation. This is because the adhesive tape can be heated using a simple heating method such as electromagnetic induction heating or microwave heating.

Preferably, the adhesive tape further includes a metal layer having an opening between the adhesive layer and the functional layer, and the metal layer can be heated by electromagnetic induction or microwave irradiation. This is because the metal layer can be heated by a simple heating method such as electromagnetic induction heating or microwave heating, and thereby the functional layer adjacent to the metal layer can also be heated.

Further, it is preferable that the endothermic peak of the side chain crystallized polymer measured by differential scanning calorimetry is 50° C. or higher. Thereby, the adhesive strength of the adhesive tape can be reduced by heating the adhesive tape to 50° C. or higher.

Further, it is preferable that the expansion ratio when the thermally expandable particles are heated to 60° C. or higher is 2 times or more and 150 times or less with respect to the volume of the thermally expandable particles at 23°C. Thereby, the adhesive force of the adhesive tape can be reduced by heating the adhesive tape to 60° C. or higher.

Next, the structure deterioration suppression system of this embodiment will be explained based on the drawings.

FIG. 1 is a schematic diagram showing an example of a structure deterioration suppression system according to the present embodiment. In FIG. 1, a structural deterioration suppression system 10 includes a deterioration suppression means 11, a first information recording means 12, a heating means 13, and a second information recording means 14. The first information recording means 12 is installed on the deterioration suppressing means 11, and the deterioration suppressing means 11 and the first information recording means 12 are integrated and joined to the structure 15. Further, the first information recording means 12 may be arranged inside the deterioration suppressing means 11.

As the deterioration suppressing means 11, for example, the above-mentioned adhesive tape can be used. Further, as the first information recording means 12, for example, a sheet capable of displaying a barcode, a QR code (registered trademark), etc., an IC chip capable of recording electronic information, a magnetic sheet capable of recording magnetic information, etc. are used. can.

As the heating means 13, for example, a hot air discharge device, an infrared ray irradiation device, an electromagnetic induction device, a microwave irradiation device, etc. can be used.

As the second information recording means 14, a personal computer, tablet, smart phone, server, etc. can be used.

The deterioration suppressing means 11 is bonded to the surface of the structure 15 to isolate the structure 15 from the outside air and is used to suppress deterioration of the structure 15. The heating means 13 is used to heat the deterioration suppressing means 11. The second information recording means 14 may not be provided, but since the second information recording means 14 is usually installed in an environment other than an outdoor environment, the first information recording means installed outdoors Compared to 12, it has superior information storage stability.

FIG. 2 is a schematic diagram showing another example of the structure deterioration suppression system of this embodiment. In FIG. 2, the structure deterioration suppression system 20 is the structure shown in FIG. It has the same configuration as the deterioration suppression system 10 and functions in the same way.

<Adhesive tape>
Next, the adhesive tape used as a deterioration suppressing means in the structure deterioration suppressing system of this embodiment will be described in detail.

The adhesive tape of the first form disclosed in the present application includes a base material and an adhesive layer, the adhesive layer includes an adhesive, a side chain crystallized polymer or thermally expandable particles, and has a surface roughness of Ra The adhesive force of the above-mentioned adhesive layer side to a cement structure having a diameter of 100 μm or less is 180° peel force measured in accordance with the provisions of JIS Z0237, when measured in an environment at a temperature of 23 ° C. and a relative humidity of 50%. It is 6N/10mm or more, and it is 1N/10mm or less when measured under an environment of a temperature of 60° C. or more and a relative humidity of 5% or less.

Moreover, the adhesive tape of the second form disclosed in the present application includes a base material, an adhesive layer, and a functional layer in this order, the adhesive layer containing an adhesive, and the functional layer containing a tack resin. , a side chain crystallized polymer or thermally expandable particles, and the adhesion force of the adhesive layer side to a cement structure with a surface roughness Ra of 100 μm or less is 180° peel force measured according to the provisions of JIS Z0237. When measured in an environment with a temperature of 23℃ and relative humidity of 50%, it is 6N/10mm or more, and when measured in an environment with a temperature of 60℃ or more and a relative humidity of 5% or less, it is 1N/10mm or less. The tackiness of the functional layer side is 5 or more as a ball number in the ball tack test specified in JIS Z0237.

The adhesive tape contains an adhesive in its adhesive layer, so it can follow uneven surfaces such as cement-based structures, and it can reliably bond the adhesive tape to cement-based structures, and can withstand outside air in a wide temperature range. It is possible to cut off contact with cement-based structures. This makes it possible to suppress the intrusion of rainwater and _CO2 from deteriorated parts such as cracks in cement-based structures, and also to prevent salt damage and alkaline aggregate reactions in cement-based structures. Even if reinforcing bars or the like are present, corrosion of the reinforcing bars or the like can be prevented, and protection performance against cracked cement structures can be ensured.

In addition, since the adhesive tape contains a side chain crystallized polymer or thermally expandable particles, the adhesive strength of the adhesive tape can be reduced by heating the adhesive tape, and the adhesive strength of the adhesive tape can be reduced by heating the adhesive tape. The above-mentioned adhesive tape can be peeled off from a cement-based structure without leaving any adhesive layer residue (adhesive residue). Specifically, the adhesive force of the adhesive layer side to a cement structure with a surface roughness Ra of 100 μm or less is measured as a 180° peel force according to the provisions of JIS Z0237, at a temperature of 23°C and a relative humidity of 50%. When measured under the following environment, the adhesive strength can be 6N/10mm or more, and the adhesive strength can be maintained under normal environments. In addition, the adhesive strength of the adhesive layer side for a cement structure with a surface roughness Ra of 100 μm or less is measured as a 180° peel force according to the provisions of JIS Z0237 at a temperature of 60°C or more and a relative humidity of 5% or less. When measured under environmental conditions, the adhesive strength can be reduced to 1N/10mm or less, and by heating the adhesive tape above 60°C, the adhesive strength can be reduced, and if necessary, it can be easily peeled off without leaving any adhesive residue. can.

The surface roughness Ra of the cement structure can be measured using, for example, a laser microscope "VK-9710" manufactured by Keyence Corporation.

Hereinafter, embodiments of the adhesive tape disclosed in this application will be described.

〔Base material〕
Examples of the above-mentioned base material include resin base materials, and specific examples of the resin base materials include polyolefin resins, ethylene-vinyl acetate copolymers, ionomer resins, and ethylene-(meth)acrylic acid. Copolymers, ethylene-(meth)acrylic ester copolymers, ethylene-butene copolymers, ethylene-hexene copolymers, polyurethane resins, polyester resins, polyimide resins, polyamide resins, polyetherketone resins Resin, polyether resin, polyether sulfone resin, polystyrene resin, polyvinyl chloride resin, polyvinylidene chloride resin, polyvinyl alcohol resin, polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer, polycarbonate Examples include base materials made of constituent materials such as resins, fluororesins, silicone resins, cellulose resins, and crosslinked products of these resins. Among these, polyethylene terephthalate (PET), which is a polyester resin, is more preferable in terms of mechanical properties and cost. These constituent materials can be used alone or in combination of two or more. Moreover, the above-mentioned constituent material may have a functional group as necessary. Further, a functional monomer or a modifying monomer may be grafted onto the constituent material.

The thickness of the base material is not particularly limited, but is preferably 30 to 300 μm, more preferably 50 to 150 μm. When the thickness of the base material is less than 30 μm, the strength of the adhesive tape itself of this embodiment tends to be insufficient, and when it exceeds 300 μm, the cost increases.

[Adhesive layer]
The adhesive layer used in the adhesive tape of the present embodiment is for imparting inherent adhesive strength to the adhesive tape, and more specifically, the adhesive layer used for the adhesive tape of the present embodiment is for imparting the adhesive strength to the adhesive tape, and more specifically, the adhesive layer is for imparting the adhesive strength to the adhesive tape for cement-based structures having a surface roughness Ra of 100 μm or less. In order to make the adhesive strength of the adhesive layer side of the tape 6N/10mm or more when measured in an environment of temperature 23 ° C and relative humidity 50% as 180 ° peel strength measured according to the provisions of JIS Z0237. It shall be established.

The adhesive contains at least one adhesive component selected from the group consisting of a natural rubber adhesive component, a synthetic rubber adhesive component, a silicone adhesive component, an acrylic adhesive component, and a polyester adhesive component.

[Natural rubber adhesive component]
Examples of the natural rubber-based adhesive component include rubber made of cis-1,4-polyprene, which is extracted only from the resin liquid of the rubber tree (Hevea brasiliensis).

[Synthetic rubber adhesive component]
Examples of the synthetic rubber adhesive component include styrene-butadiene rubber, isoprene rubber, butadiene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, butyl rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, and the like.

[Silicone adhesive component]
Examples of the silicone adhesive component include an addition reaction type silicone adhesive component and a peroxide curing silicone adhesive component, and these may be used alone or in combination.

[Acrylic adhesive component]
Examples of the acrylic adhesive component include those obtained by copolymerizing (meth)acrylic acid ester monomers. Examples of (meth)acrylic acid ester monomers include methyl (meth)acrylate, ethyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, and 2-ethylhexyl (meth)acrylate. , isooctyl (meth)acrylate, nonyl (meth)acrylate, isononyl (meth)acrylate, and the like. In addition, (meth)acrylic acid ester monomers include monomers containing functional groups such as (meth)acrylic acid, crotonic acid, fumaric acid, itaconic acid, (anhydride)maleic acid, vinyl acetate, acrylonitrile, styrene, (meth)acrylic acid, etc. 2-hydroxyethyl acrylate, 2-methylolethyl acrylamide, etc. may be added for copolymerization.

[Polyester adhesive component]
Examples of the polyester adhesive component include those obtained by polycondensing polycarboxylic acids (eg, dicarboxylic acids) and polyalcohols (eg, diols). Examples of the dicarboxylic acids include adipic acid, azelaic acid, 1,4-cyclohexanedicarboxylic acid, 4-methyl-1,2-cyclohexanedicarboxylic acid, dodecenyl succinic anhydride, fumaric acid, succinic acid, dodecanedioic acid, and hexahydrocarboxylic acid. Aliphatic and alicyclic dicarboxylic acids such as phthalic anhydride, tetrahydrophthalic anhydride, maleic acid, maleic anhydride, itaconic acid, and citraconic acid, terephthalic acid, isophthalic acid, orthophthalic acid, and 1,5-naphthalene dicarboxylic acid. , 2,6-naphthalenedicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 2,2'-diphenyldicarboxylic acid, 4,4'-diphenyl etherdicarboxylic acid and the like. Examples of the diol include ethylene glycol, 1,2-propylene glycol, 1,3-propanediol, 2-methyl-1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1 ,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol, neopentyl glycol, diethylene glycol, dipropylene glycol, 2,2,4-trimethyl-1 ,5-pentanediol, 2-ethyl-2-butylpropanediol, 1,9-nonanediol, 2-methyloctanediol, 1,10-decanediol, 1,4-cyclohexanedimethanol, 1,2-cyclohexanediol Examples include aliphatic glycols such as methanol.

The adhesive preferably contains a crosslinking agent together with the adhesive component, and may further contain a crosslinking accelerator, filler, softener, tackifier, anti-aging agent, etc. as necessary.

The thickness of the adhesive layer can be determined depending on the ability to follow the uneven surface of the cement structure, and is not particularly limited, but is preferably 200 to 5000 μm, more preferably 500 to 1000 μm. If the thickness of the above-mentioned adhesive layer is less than 200 μm, it tends to be unable to follow the unevenness of the cracked surface of the cement structure, and it also tends to be unable to follow the irregularities of the cracked surface of the cement structure. There is a tendency that the 180° peel force measured at 6 N/10 mm cannot be obtained. On the other hand, even if the thickness of the adhesive layer exceeds 5000 μm, there is no significant change in the ability to follow unevenness on the cracked surface, but there is a tendency for adhesive residue to be left on the cement structure when peeled off.

The adhesive layer of the adhesive tape of the first embodiment further contains a side chain crystallized polymer or thermally expandable particles. The side chain crystallized polymer and the thermally expandable particles are components that reduce the adhesive strength of the adhesive tape when the adhesive tape is heated. The side chain crystallized polymer and the thermally expandable particles are the same as the side chain crystallized polymer and the thermally expandable particles contained in the functional layer of the adhesive tape of the second form, and Details of the polymer and the thermally expandable particles will be described later.

[Functional layer]
The adhesive tape of the second form includes a functional layer, and the functional layer has a function of reducing the adhesive strength of the adhesive tape when the adhesive tape is heated to 60° C. or higher, and a function of reducing the adhesive strength of the adhesive tape to the cement-based structure. This is intended to provide a function to enhance the initial adhesion immediately after adhesive tapes are bonded together. The functional layer includes a tack resin and a side chain crystallized polymer or thermally expandable particles.

[Side chain crystallized polymer]
The side chain crystallized polymer is a component that reduces the adhesive strength of the adhesive tape when the adhesive tape is heated at 50° C. or higher. The side chain crystallized polymer has an endothermic peak measured by differential scanning calorimetry (DSC) of 50° C. or higher. DSC is a thermal analysis method that measures the melting point of a measurement sample by measuring the difference in calorific value between the measurement sample and a reference substance using a differential scanning calorimeter, and uses α-alumina etc. as the reference substance. be able to.

The side chain crystallized polymer is preferably a copolymer of a linear acrylate having an alkane chain having 18 or more carbon atoms and an acrylic monomer having a solubility parameter (SP value) of 7.3 to 9.5. .

As the linear acrylate having an alkane chain having 18 or more carbon atoms, for example, stearyl acrylate, behenyl acrylate, lignocerityl acrylate, serotinyl acrylate, montanyl acrylate, melisinyl acrylate, etc. can be used. By using the above-mentioned linear acrylate, the endothermic peak measured by DSC of the above-mentioned side chain crystallized polymer can be set to 50°C or higher.

Further, as the acrylic monomer having the solubility parameter of 7.3 to 9.5, for example, acrylic acid, ethyl acrylate, butyl acrylate, methacrylic acid, methyl methacrylate, butyl methacrylate, etc. can be used. By using the acrylic monomer, the compatibility between the side chain crystallized polymer and the tack resin can be improved.

Further, the weight average molecular weight of the side chain crystallized polymer is preferably 1,000 to 15,000, more preferably 5,000 to 12,000.

The content of the side chain crystallized polymer in the functional layer of the adhesive tape is preferably 1 to 20 parts by mass, more preferably 1 to 10 parts by mass, based on 100 parts by mass of the tack resin. preferable. If the content is less than 1 part by mass, the adhesive strength after heating at 50° C. or higher will not decrease, making it difficult to peel off from the cement structure. Moreover, if the above content is more than 20 parts by mass, there is a risk that it will peel off at high temperatures in summer before being heated to 50°C.

[Thermally expandable particles]
The thermally expandable particles are components that reduce the adhesive strength of the adhesive tape when the adhesive tape is heated to 60° C. or higher. In particular, the thermally expandable particles have an expansion ratio of 2 times or more and 150 times or less, preferably 5 times or more and 30 times or less, relative to the volume at 23°C when heated to 60°C or higher. Although the structure is not limited, thermally expandable particles containing an outer shell made of a thermoplastic resin and a hydrocarbon having 5 to 12 carbon atoms encapsulated within the outer shell are preferably used.

Examples of the thermoplastic resin constituting the outer shell of the thermally expandable particles include polyolefin resins, vinyl chloride resins, vinylidene chloride resins, acrylic resins, acrylonitrile resins, polyacetal resins, polycarbonate resins, and polyvinyl chloride resins. Examples include butyral resin, polyvinyl acetate resin, polyvinyl alcohol resin, and the like.

Furthermore, the type of hydrocarbon containing 5 to 12 carbon atoms contained in the outer shell of the thermally expandable particles is not particularly limited as long as it is a low boiling point hydrocarbon that is liquid at room temperature and vaporizes at 60°C or higher. .

Although the average particle diameter of the thermally expandable particles is not particularly limited, for example, particles of 5 to 50 μm are used. Further, the thickness of the outer shell is not particularly limited, but for example, a thickness of 2 to 15 μm is used. Furthermore, the expansion start temperature of the thermally expandable particles is preferably 60 to 100°C. This is because it is relatively easy to heat the adhesive tape of this embodiment to 60 to 100°C.

Specifically, the thermally expandable particles include, for example, thermally expandable microcapsules “Matsumoto Microsphere” (trade name) manufactured by Matsumoto Yushi Pharmaceutical Co., Ltd., and thermally expandable microcapsules “Expancel” manufactured by Nippon Philite Co., Ltd. (trade name), thermally expandable fine particles "Dieform" (trade name) manufactured by Dainichiseika Kagyo Co., Ltd., etc. can be used.

The content of the thermally expandable particles in the functional layer of the adhesive tape is preferably 1 to 35 parts by mass, more preferably 3 to 15 parts by mass, based on 100 parts by mass of the tack resin. . When the content is less than 1 part by mass, the adhesive strength tends not to decrease even if the adhesive tape is heated to 60° C. or higher, making it difficult to peel it off from the cement structure. Moreover, when the content is more than 35 parts by mass, the adhesive strength of the adhesive tape at room temperature tends to decrease.

[Tackiness resin]
The tackiness resin is a component that imparts to the functional layer a function of increasing the initial adhesion immediately after the adhesive tape is bonded to the cement structure. The tackiness resin is not particularly limited as long as it can make the tackiness of the functional layer side of the adhesive tape a ball number of 5 or more in the ball tack test specified in JIS Z0237, but for example, Selected from the group consisting of polyolefin resin, polyvinyl chloride resin, acrylic resin, polyester resin, fluorine resin, aramid resin, natural rubber resin, synthetic rubber resin, silicone resin, and urethane resin. At least one resin can be used.

By including the tackiness resin in the functional layer, the initial adhesion immediately after the adhesive tape is bonded to the cement-based structure can be improved, and peeling of the end portion of the adhesive tape immediately after bonding can be prevented. Specifically, the tackiness of the functional layer side of the adhesive tape can be set to 5 or more as a ball number in a ball tack test specified in JIS Z0237.

The thickness of the functional layer is not particularly limited, but is usually set to 5 to 100 μm. If the thickness of the functional layer is within the above range, the above-mentioned function of reducing the adhesive strength of the adhesive tape when the adhesive tape is heated at 60° C. or higher, and the ability to apply the adhesive tape to a cement-based structure. This is because it can exhibit the function of increasing the initial adhesion immediately after bonding.

<Materials that can be heated by electromagnetic induction or microwave irradiation>
In the adhesive tape of the first embodiment, the adhesive layer preferably includes a material that can be heated by electromagnetic induction or microwave irradiation. Further, in the adhesive tape of the second embodiment, it is preferable that at least one selected from the adhesive layer and the functional layer contain a material that can be heated by electromagnetic induction or microwave irradiation.

By including the adhesive tape with a material that can be heated by electromagnetic induction or microwave irradiation, the adhesive tape can be heated using a relatively simple heating method such as electromagnetic induction heating or microwave heating, and the adhesive The adhesive force of the tape can be lowered, and the adhesive tape can be peeled off from a cement structure without leaving any residue (adhesive residue).

[Materials that can be heated by electromagnetic induction]
In electromagnetic induction heating, an electric current is passed through an object to be heated by electromagnetic induction to generate heat, so the object to be heated needs to be a conductor. Therefore, the material that can be heated by electromagnetic induction is made of a conductor. As the conductor, a metal material, a conductive non-metal material, etc. can be used. Preferably, the metal material is aluminum, iron, copper, silver, gold, nickel, platinum, zinc, lead, stainless steel, etc., and the conductive non-metal material is, for example, carbon black, carbon fiber, graphene, etc. etc. are preferred.

[Materials that can be heated by microwave]
Microwave heating uses electromagnetic waves of 300 MHz to 300 GHz to generate heat through molecular motion and ion conduction of the heated object, so it is possible to heat dielectric materials, electrical conductors, and magnetic materials. Suitable for body heating. As the dielectric material, for example, various synthetic resins; ceramics such as silicon carbide and silicon nitride; mica, etc. can be used, and as the conductive material, metal materials similar to those capable of electromagnetic induction heating, electrically conductive materials, etc. can be used. Non-metallic materials and the like can be used, and as the magnetic material, for example, iron oxide, various ferrite materials, etc. can be used.

The content of the material capable of electromagnetic induction heating or the material capable of microwave heating in the functional layer is not particularly limited as long as the functional layer of the adhesive tape can be heated to a temperature of 60 ° C. or higher, For example, the amount may be 1 to 20 parts by mass based on 100 parts by mass of the tack resin.

Further, the content of the material capable of electromagnetic induction heating or the material capable of microwave heating in the adhesive layer is such that the content can heat the adhesive layer or functional layer of the adhesive tape to a temperature of 60°C or higher. Although not particularly limited, the amount may be, for example, 1 to 20 parts by mass per 100 parts by mass of the adhesive component.

<Metal layer>
In the adhesive tape of this embodiment, a metal layer having an opening can be disposed between the adhesive layer and the functional layer. The metal layer can be heated by electromagnetic induction or microwave irradiation, and has a function of heating a functional layer adjacent to the heated metal layer.

The metal layer preferably contains at least one member selected from the group consisting of aluminum, iron, copper, silver, gold, nickel, platinum, zinc, lead, and stainless steel.

On the other hand, since the metal layer is disposed between the adhesive layer and the functional layer, it is provided with an opening in order to ensure bonding between the adhesive layer and the functional layer.

The metal layer has an opening and is not particularly limited in its form as long as it can be heated by electromagnetic induction or microwave irradiation, but for example, expanded metal, punched metal, mesh metal, etc. can be used. When these are used as a metal layer, the diameter of the opening is preferably 0.02 to 10.00 mm as the diameter of the circle inscribed in the opening.

Moreover, since a metal nonwoven fabric also has small openings, it can be used as the metal layer. When the metal nonwoven fabric is used as the metal layer, it is preferable that the metal nonwoven fabric has an air permeability of 0.5 to 500 cm ³ /cm ² /sec as measured by the Frazier method.

The aperture ratio of the metal layer is preferably 10 to 85%. When the aperture ratio is less than 10%, the bonding strength between the adhesive layer and the functional layer decreases, and there is a risk that the adhesive layer and the functional layer will separate, and the adhesive strength of the adhesive tape tends to decrease. . Furthermore, when the aperture ratio exceeds 85%, heating by electromagnetic induction or microwave irradiation tends to become difficult.

The thickness of the metal layer is preferably 10 to 500 μm. If the thickness is less than 10 μm, the functional layer tends not to be heated to 50° C. or higher by electromagnetic induction or microwave irradiation, and if it exceeds 500 μm, it tends to be difficult to bond the adhesive layer and the functional layer.

Next, the adhesive tape of this embodiment will be explained based on the drawings. FIG. 3 is a schematic cross-sectional view showing an example of the adhesive tape of this embodiment. In FIG. 3 , adhesive tape 30 includes an adhesive layer 32 on a base material 31 . Moreover, FIG. 4 is a schematic sectional view showing another example of the adhesive tape of this embodiment. In FIG. 4 , the adhesive tape 40 includes an adhesive layer 42 on a base material 41 and a functional layer 43 on the adhesive layer 42 . FIG. 5 is a schematic cross-sectional view showing still another example of the adhesive tape of this embodiment. In FIG. 5, the adhesive tape 70 includes an adhesive layer 72 on a base material 71, a metal layer 73 having an opening 73a on the adhesive layer 72, and a functional layer 74 on the metal layer 73. There is. The opening 73a of the metal layer 73 is filled with the adhesive of the adhesive layer 72, and the adhesive filled in the opening 73a joins the adhesive layer 72 and the functional layer 74 through the metal layer 73. be done.

The adhesive tape of this embodiment preferably has a carbon dioxide permeability of 0.5 g/(m ² 24 hr 1 atm) or less at 20° C. as defined in JIS K7126. When the carbon dioxide permeability is within the above range, it is possible to block not only carbon dioxide, which promotes deterioration of cement-based structures, but also chlorine ions, water, oxygen, etc., which promote deterioration of cement-based structures.

(How to use the structural deterioration control system)
An embodiment of a method of using the structure deterioration suppression system disclosed in this application will be described. According to the method of using the structure deterioration suppression system of the present embodiment, a structure inspector can perform construction in a simple manner immediately after inspection, and deterioration of the structure can be sufficiently suppressed during construction. Also, it can be easily re-inspected when necessary.

A method of using the structure deterioration suppression system of the first form disclosed in this application is a method of using the above-described structure deterioration suppression system, in which the structure is inspected and an initial stage including deterioration information of the structure is used. a step of acquiring information; a step of determining from the initial information whether or not the structure has deteriorated; and when it is determined that the structure has deteriorated, whether or not repair of the structure is necessary. a step of recording the initial information in the first information recording means when it is determined that the structure has deterioration but no repair is necessary; , a step of joining the deterioration suppressing means for suppressing deterioration of the structure to a deteriorated part of the structure when it is determined that no repair is necessary; a step of leaving the structure in a natural environment for a certain period of time; and heating the deterioration suppressing means with the heating means after leaving the structure in the natural environment for a certain period of time, thereby increasing the bonding force of the deterioration suppressing means to the structure. a step of separating the deterioration suppressing means from the structure after reducing the bonding force of the deterioration suppressing means; and a step of separating the deterioration suppressing means from the structure after separating the deterioration suppressing means from the structure. A step of inspecting the structure to obtain after-abandonment information including deterioration information of the structure, and recording the after-abandonment information in the first information recording means, and repairing the structure based on the after-abandonment information. and a step of rejoining a new deterioration suppressing means to the deteriorated portion of the structure if it is determined that the repair is not necessary as a result of determining whether or not the structure requires repair. It is equipped with

The method for using the structural deterioration suppression system of the first embodiment may further include a step of comparing the initial information and the information after being left unused. Thereby, the progress of deterioration of the structure can be easily grasped.

Further, a method of using the structure deterioration suppression system of the second form disclosed in the present application is a method of using the above-described structure deterioration suppression system, in which the structure is inspected and deterioration information of the structure is obtained. a step of determining whether or not the structure has deteriorated from the initial information; and a step of determining whether the structure needs to be repaired when it is determined that the structure has deteriorated. a step of determining whether or not the structure has deteriorated, but when it is determined that repair is not necessary, adding code information to the initial information and recording the code information in the first information recording means; At the same time, the step of recording the initial information and the code information in the second information recording means; a step of bonding the deterioration suppressing means for suppressing deterioration of the structure; a step of leaving the structure to which the deterioration suppressing means is bonded in a natural environment for a certain period of time; , a step of heating the deterioration suppressing means by the heating means after being left in a natural environment to reduce the bonding force of the deterioration suppressing means to the structure; and reducing the bonding force of the deterioration suppressing means to the structure. Later, a step of separating the deterioration suppressing means from the structure, and after separating the deterioration suppressing means from the structure, inspecting the structure to obtain post-disposition information including deterioration information of the structure. At the same time, a step of recording the after-abandonment information in the second information recording means, a step of determining from the after-abandonment information whether or not repair of the structure is necessary, and a step of determining whether or not repair of the structure is necessary. As a result of the determination, if it is determined that no repair is necessary, the method further includes the step of joining a new deterioration suppressing means to the deteriorated portion of the structure again.

The method of using the structural deterioration suppression system of the second embodiment is to read out the initial information from the second information recording means based on the code information recorded in the first information recording means, and to The method may further include a step of comparing the information with the above-mentioned after-leaving information. Thereby, the progress of deterioration of the structure can be easily grasped.

Further, in the method of using the structure deterioration suppression system of the first embodiment and the second embodiment, the initial information and the post-disposition information include the position information of the structure, the position information of the deteriorated part, and It is preferable to further include at least one type selected from the environmental information of the structure. This allows detailed information on deteriorated parts of the structure to be grasped.

Next, a method of using the structure deterioration suppression system of this embodiment will be explained using a flowchart. FIG. 6 is an example of a flowchart of a method of using the structure deterioration suppression system of this embodiment.

As shown in FIG. 6, the structure deterioration control system of this embodiment is usually applied after a structure is newly built or repaired and then left in the natural environment for a certain period of time (step 1). be done.

First, a structure that has been left unused for a certain period of time is inspected to obtain initial information including deterioration information of the structure (step 2). In the case of concrete structures such as bridges and tunnels, inspections are usually conducted to check for deterioration after being left unused for five years.

Next, it is determined from the initial information whether or not the structure has deteriorated (step 3). As a result, if it is determined that there is no deterioration in the structure (step 3: No), the process returns to step 1 and the structure is further left in the natural environment for a certain period of time.

On the other hand, if it is determined that the structure has deteriorated (step 3: Yes), it is determined whether the structure needs to be repaired (step 4). As a result, if it is determined that the structure needs to be repaired (step 4: Yes), the repair is performed (step 12). Next, when the repair is completed, the process returns to step 1, and the structure is further left in the natural environment for a certain period of time.

On the other hand, if it is determined that the structure has deteriorated but does not require repair (step 4: No), in the method of using the structure deterioration suppression system of the first form, the initial information is In the method of using the structure deterioration suppression system of the second embodiment, the code information is added to the initial information, the code information is recorded in the first information recording means, and , the above-mentioned initial information and the above-mentioned code information are recorded in the above-mentioned second information recording means (step 5). Here, in another embodiment, the initial information and the code information may be recorded only in the second information recording means.

Further, when it is determined that the structure has deteriorated but no repair is necessary, the deterioration suppressing means for suppressing the deterioration of the structure is bonded to the deteriorated portion of the structure (step 6). Specifically, for example, the above-described adhesive tape that suppresses deterioration of the structure is bonded to the deteriorated portion of the structure.

Thereafter, the structure to which the deterioration suppressing means has been bonded is left in a natural environment for a certain period of time (step 7). As mentioned above, the abandonment period is usually 5 years in the case of concrete structures such as bridges and tunnels.

Next, after the structure is left in a natural environment for a certain period of time, the deterioration suppressing means is heated by a heating means to reduce the bonding force of the deterioration suppressing means to the structure (step 8). The heating may be performed using a hot air emitting device (for example, a hair dryer, etc.) that directly heats the deterioration suppressing means, an infrared irradiation device (for example, an infrared heater, etc.), or indirectly heating the deterioration suppressing means. An electromagnetic induction device for heating or a microwave irradiation device may be used.

Subsequently, after reducing the bonding force of the deterioration suppressing means, the deterioration suppressing means is separated from the structure (step 9). This is to confirm the state of deterioration of the structure after it has been left alone. Here, since the bonding force of the deterioration suppressing means is reduced by heating, the deterioration suppressing means can be easily separated from the structure.

Next, after separating the deterioration suppressing means from the structure, the structure is inspected to obtain after-standing information including deterioration information of the structure, and the structure deterioration suppressing system of the first embodiment In the usage method, the after-aside information is recorded in the first information recording means, and in the usage method of the structure deterioration suppression system of the second form, the after-aside information is recorded in the second information recording means. Record (step 10).

Next, it is determined whether or not the structure requires repair based on the after-abandonment information (step 11). As a result, if it is determined that no repair is necessary (step 11: No), the process returns to step 6, and a new deterioration suppressing means is rejoined to the deteriorated portion of the structure.

On the other hand, if it is determined that the structure requires repair, the repair is performed (step 12). Next, when the repair is completed, the process returns to step 1, and the structure is further left in the natural environment for a certain period of time.

The structural deterioration suppression system of this embodiment can be operated as described above, but the order of each step can be changed as necessary. For example, in step 10, in the method of using the structure deterioration control system of the first form, recording of the after-disposition information in the first information recording means, and the method of using the structure deterioration control system of the second form. The recording of the after-standing information on the second information recording means may be performed after step 11 and after the deterioration suppressing means is rejoined. In reality, each of the above steps is repeated to maintain and manage the structure.

Next, an embodiment of a method of using a structure deterioration suppression system using the adhesive tape of the second embodiment as the deterioration suppression means for a concrete structure will be described based on the drawings. However, the functional layer of the adhesive tape includes a side chain crystallized polymer and a material that can be heated by electromagnetic induction or microwave irradiation.

In the method of using the structural deterioration suppression system of this embodiment, first, as shown in FIG. 7, the functional layer 43 side of the adhesive tape 40 is pasted onto the cracked portion 51 of the concrete 50. At this time, pressure may be applied to the adhesive tape 40 from the base material 41 side.

Leave it in the state shown in Figure 7 for a certain period of time until the next inspection. Since the cracked portions 51 of the concrete 50 are covered with the adhesive tape 40 for a period of time of 5 years, for example, the deterioration of the concrete does not progress any further or its progress is slowed down.

Next, for example, at the next inspection five years later, as shown in FIG. 8, electromagnetic induction or microwave irradiation 60 is applied to the adhesive tape 40 to heat the adhesive tape 40 to, for example, 60° C. or higher. At this time, since the functional layer 43 of the adhesive tape 40 contains the above-mentioned side chain crystallized polymer, the adhesive force of the adhesive tape 40 decreases during the heating. Therefore, even if the adhesive tape 40 is subsequently peeled off from the concrete 50, no adhesive residue of the adhesive layer will be left on the surface of the concrete 50, as shown in FIG. This makes it easy to check the deterioration state of concrete. Thereafter, the overall state of deterioration of the concrete structure is examined, focusing on the size, depth, etc. of the cracks 51 in the concrete 50, and the necessity of repair is determined.

The above process makes it possible to prevent concrete deterioration and determine the necessity of repairing concrete structures in a simple manner.

By using the above-mentioned adhesive tape, it is possible to simply apply the above-mentioned adhesive tape to the deteriorated part of the concrete at room temperature immediately after inspecting the concrete structure to ensure adhesion, and if necessary, it can be heated to leave adhesive residue. It can be easily peeled off. In addition, while the above adhesive tape is attached to a deteriorated part of concrete, it can prevent concrete from deteriorating, and since the above adhesive tape itself has high durability and fatigue resistance, concrete deterioration can be prevented for a long period of time. can.

In addition, the above-mentioned adhesive tape contains an adhesive in its adhesive layer, so it can follow uneven surfaces such as the surface of concrete structures, and it can block contact between outside air and concrete over a wide temperature range, preventing cracks in concrete, etc. It is possible to suppress the intrusion of rainwater and CO ₂ from deteriorated parts, and it is also possible to prevent salt damage to concrete and alkaline aggregate reaction, so it is possible to prevent corrosion of reinforcing bars in concrete, and to prevent cracked concrete structures. protection performance can be ensured.

Furthermore, since the functional layer of the adhesive tape contains a side chain crystallized polymer, the adhesive strength of the adhesive tape can be increased by heating the adhesive tape at a temperature higher than the melting point of the side chain crystallized polymer. The adhesive tape can be peeled off from concrete without leaving adhesive layer residue (adhesive residue) on the concrete side. This makes it easy to visually confirm the size of deteriorated areas such as cracks in the concrete, and it can be determined at that point (usually 5 years after the previous inspection) whether or not full-scale repair work is necessary. . Generally, if the concrete in question has significantly deteriorated (cracks) at this point, repair work will be carried out, and if the concrete has not deteriorated further, follow-up observation will be conducted for another five years. .

Furthermore, for the heating, a simple method such as electromagnetic induction or microwave irradiation can be used, so the adhesive tape can be heated in a relatively simple manner to reduce the adhesive strength of the adhesive tape. The adhesive tape can be removed from concrete without leaving any residue (adhesive residue).

The structure deterioration control system disclosed in this application can prevent deterioration of structures and maintain and manage them in a simple manner, and is particularly useful in the civil engineering and construction fields.

10, 20 Structure deterioration suppression system 11 Deterioration suppression means 12 First information recording means 13 Heating means 14 Second information recording means 15 Structure 30, 40, 70 Adhesive tape 31, 41, 71 Base material 32, 42, 72 Adhesive layer 43, 74 Functional layer 50 Concrete 51 Crack 60 Electromagnetic induction or microwave irradiation 73 Metal layer 73a Opening

Claims (19)

a deterioration suppressing means that suppresses deterioration of the structure by being bonded to the surface of the structure;
first information recording means for recording information regarding deterioration of the structure;
a heating means for heating the deterioration suppressing means,
The deterioration suppressing means is a member whose bonding force to the structure decreases when heated,
The deterioration suppressing means and the first information recording means are integrated, or the first information recording means can be separated from the deterioration suppressing means and joined to the structure. A structural deterioration suppression system featuring: The structure deterioration suppression system according to claim 1 , wherein the deterioration suppression means is an adhesive tape whose bonding strength decreases when heated. The structure according to claim 1 or 2 , wherein the first information recording means is a recording medium capable of recording at least one type selected from barcode information, QR code (registered trademark) information, electronic information, and magnetic information. Deterioration suppression system. The structural deterioration suppression system according to any one of claims 1 to 3 , wherein the heating means is at least one selected from a hot air emitting device, an infrared irradiation device, an electromagnetic induction device, and a microwave irradiation device. The structure deterioration suppression system according to any one of claims 1 to 4 , wherein the structure is a cement structure. Claim further comprising a second information recording means for recording information regarding deterioration of the structure, wherein the second information recording means is placed in an environment different from an outdoor environment in which the structure is installed. The structure deterioration suppression system according to any one of items 1 to 5 . The structural deterioration suppression system according to claim 6 , wherein the second information recording means is at least one type selected from a personal computer, a tablet, a smart phone, and a server. The adhesive tape includes a base material and an adhesive layer,
The adhesive layer includes an adhesive, a side chain crystallized polymer or thermally expandable particles,
The adhesive strength of the adhesive layer side to a cement structure with a surface roughness Ra of 100 μm or less is measured as a 180° peel force in accordance with the provisions of JIS Z0237 at a temperature of 23 ° C. and a relative humidity of 50%. 3. The structural deterioration suppression system according to claim 2 , which is 6 N/10 mm or more when the temperature is 60° C. or more and 1 N/10 mm or less when measured in an environment with a temperature of 60° C. or more and a relative humidity of 5% or less. The structure deterioration suppression system according to claim 8 , wherein the adhesive layer further includes a material that can be heated by electromagnetic induction or microwave irradiation. The adhesive tape includes a base material, an adhesive layer, and a functional layer in this order,
The adhesive layer includes an adhesive,
The functional layer includes a tack resin and a side chain crystallized polymer or thermally expandable particles,
The adhesive strength of the adhesive layer side to a cement structure with a surface roughness Ra of 100 μm or less is measured as a 180° peel force in accordance with the provisions of JIS Z0237 at a temperature of 23 ° C. and a relative humidity of 50%. When measured in an environment of a temperature of 60°C or higher and a relative humidity of 5% or lower, it is 1N/10mm or lower,
The structural deterioration suppression system according to claim 2 , wherein the tackiness of the functional layer is 5 or more as a ball number in a ball tack test specified in JIS Z0237. The structural deterioration suppression system according to claim 10 , wherein at least one selected from the adhesive layer and the functional layer further includes a material that can be heated by electromagnetic induction or microwave irradiation. further comprising a metal layer with an opening between the adhesive layer and the functional layer,
The structure deterioration suppression system according to claim 10 , wherein the metal layer can be heated by electromagnetic induction or microwave irradiation. The structure deterioration suppression system according to claim 8 or 10, wherein the endothermic peak of the side chain crystallized polymer measured by differential scanning calorimetry is 50°C or higher. The structure according to claim 8 or 10, wherein the expansion ratio when the thermally expandable particles are heated to 60° C. or higher is 2 times or more and 150 times or less with respect to the volume of the thermally expandable particles at 23° C. Deterioration suppression system. A method of using the structural deterioration suppression system according to any one of claims 1 to 5 or 8 to 14, comprising:
inspecting the structure to obtain initial information including deterioration information of the structure;
determining whether or not there is deterioration in the structure from the initial information;
a step of determining whether or not repair of the structure is necessary when it is determined that the structure has deteriorated;
recording the initial information in the first information recording means when it is determined that the structure has deteriorated but does not require repair;
a step of joining the deterioration suppressing means for suppressing deterioration of the structure to the deteriorated portion of the structure when it is determined that the structure has deteriorated but does not require repair;
a step of leaving the structure to which the deterioration suppressing means is bonded in a natural environment for a certain period of time;
After leaving the structure in a natural environment for a certain period of time, heating the deterioration suppressing means with the heating means to reduce the bonding force of the deterioration suppressing means to the structure;
After reducing the bonding force of the deterioration suppressing means, separating the deterioration suppressing means from the structure;
After separating the deterioration suppressing means from the structure, inspecting the structure to obtain after-aside information including deterioration information of the structure, and storing the after-aside information in the first information recording means. The process of recording;
determining whether or not the structure requires repair based on the after-abandonment information;
As a result of determining whether or not repair of the structure is necessary, if it is determined that repair is not necessary, the structure includes the step of rejoining a new deterioration suppressing means to the deteriorated portion of the structure. How to use the property deterioration control system. 16. The method of using a structure deterioration suppression system according to claim 15 , further comprising the step of comparing the initial information and the information after being left unused. A method of using the structure deterioration suppression system according to claim 6 or 7 ,
inspecting the structure to obtain initial information including deterioration information of the structure;
determining whether or not there is deterioration in the structure from the initial information;
a step of determining whether or not repair of the structure is necessary when it is determined that the structure has deteriorated;
When it is determined that the structure has deteriorated but does not require repair, code information is added to the initial information, the code information is recorded in the first information recording means, and the initial information and the recording the code information in the second information recording means;
a step of joining the deterioration suppressing means for suppressing deterioration of the structure to the deteriorated portion of the structure when it is determined that the structure has deteriorated but does not require repair;
a step of leaving the structure to which the deterioration suppressing means is bonded in a natural environment for a certain period of time;
After leaving the structure in a natural environment for a certain period of time, heating the deterioration suppressing means with the heating means to reduce the bonding force of the deterioration suppressing means to the structure;
After reducing the bonding force of the deterioration suppressing means, separating the deterioration suppressing means from the structure;
After separating the deterioration suppressing means from the structure, the structure is inspected to obtain after-aside information including deterioration information of the structure, and the after-aside information is stored in the second information recording means. The process of recording;
a step of determining whether or not repair of the structure is necessary based on the after-abandonment information;
As a result of determining whether or not repair of the structure is necessary, if it is determined that repair is not necessary, the structure includes the step of rejoining a new deterioration suppressing means to the deteriorated portion of the structure. How to use the property deterioration control system. A claim further comprising the step of reading the initial information from the second information recording means based on the code information recorded on the first information recording means and comparing the initial information and the after-leaving information. A method of using the structure deterioration suppression system according to item 17 . Any one of claims 15 to 18 , wherein the initial information and the after-aside information each further include at least one type selected from position information of the structure, position information of the deteriorated part, and environmental information of the structure. How to use the structural deterioration control system described in Section 1.

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