WO2018199032A1 - 構造物へのfrp材の接着構造および接着方法 - Google Patents
構造物へのfrp材の接着構造および接着方法 Download PDFInfo
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- WO2018199032A1 WO2018199032A1 PCT/JP2018/016473 JP2018016473W WO2018199032A1 WO 2018199032 A1 WO2018199032 A1 WO 2018199032A1 JP 2018016473 W JP2018016473 W JP 2018016473W WO 2018199032 A1 WO2018199032 A1 WO 2018199032A1
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- WIPO (PCT)
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- base material
- fiber base
- frp
- resin
- frp material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/18—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length in the form of a mat, e.g. sheet moulding compound [SMC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
- B29C70/547—Measures for feeding or distributing the matrix material in the reinforcing structure using channels or porous distribution layers incorporated in or associated with the product
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/21—Paper; Textile fabrics
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
Definitions
- the present invention relates to an FRP (fiber reinforced plastic) material bonding structure and bonding method to a structure, and particularly to an existing structure that requires a change in use or an existing structure that has a cross-sectional defect due to corrosion, etc. It is possible to easily and reliably repair and reinforce with the necessary FRP material without performing bolted joints or welded joints, thereby improving or recovering the desired performance of existing structures without fail.
- the present invention relates to a bonding structure of an FRP material to a structure and a bonding method.
- the structural members such as steel pad and base material (existing structures) will be added.
- Bolt joints and weld joints are used for joining with the.
- the bolt hole has a cross-sectional defect, and residual stress is introduced into the welded joint, which may place a burden on the base material and give a new defect.
- the structural member to be added is made of steel, the weight increases, so that not only the working force to be considered in the design increases, but also the workability at the construction site may be problematic.
- the resin is surely poured into the adhesive surface and cured to exhibit a desired adhesive force.
- the resin wraps around insufficiently, the resin does not sufficiently reach the bonding surface between the FRP material and the structure, and the adhesive strength of the adhesive is difficult to be fully exhibited. .
- Patent Document 1 describes reinforcement by VaRTM molding, but does not describe a structure for exerting adhesive strength. For this reason, there is no concept of an adhesive base material layer, and there is a concern that the resin is surely poured into a necessary portion and stable adhesive strength cannot be secured. Further, in the case of multiple layers, although the resin impregnation property to the reinforcing layer can be ensured by the intermediate insertion of the highly permeable fiber material, the resin does not sufficiently reach the bonding surface, and there is a concern that the adhesive strength is further lowered.
- Patent Document 2 discloses a method for reinforcing a concrete structure using a prepreg sheet. Since the reinforcing fiber base is a prepreg sheet impregnated with resin, the adhesive strength can be ensured, but the labor of the process increases, and depending on the resin, hardening of the resin begins until it is vacuumed after sealing, and instead the adhesive surface There is a concern that air remains on the surface and causes low adhesive strength. In addition, since the additional member is a prepreg sheet, although the quality is high, since the construction is performed while heating, there is a problem that a heat source facility is required and the work procedure becomes complicated.
- an object of the present invention is to easily and reliably at the construction site without performing bolted joint or welded joint on an existing structure that requires application change or an existing structure that has a cross-sectional defect due to corrosion or the like.
- an FRP material adhesion structure to a structure and an adhesion method that can be repaired and reinforced with the FRP material necessary for the construction, thereby reliably improving or restoring the desired performance of an existing structure.
- the FRP material adhesion structure to the structure according to the present invention is an FRP material adhesion structure to the structure, and a fiber-based substrate is provided between the structure and the FRP material. And an adhesive layer formed of a resin, and the adhesive layer protrudes from the edge of the FRP material.
- the structure in the structure in which the FRP material as the reinforcing material is adhered to the structure to be repaired and reinforced, the structure is interposed between the structure and the FRP material.
- the adhesive layer for exerting the adhesive force between the object and the FRP material, and the adhesive layer is interposed between the structure and the FRP material, so that the FRP material has a sufficiently high adhesive force on the structure. Glued.
- This adhesive layer is formed of a fiber base material and a resin, and is formed by impregnating the resin into the fiber base material for forming the adhesive layer, but the adhesive layer exhibits a sufficiently high adhesive force, And in order to suppress the dispersion
- resins that are impregnated from the reinforcing fiber base material side forming the FRP material into the fiber base material but it is often difficult to expect sufficient resin impregnation to the fiber base material alone. In many cases, it is not possible to form an adhesive layer exhibiting a sufficiently high adhesive force.
- the present invention employs a structure in which the formed adhesive layer protrudes from the edge of the FRP material. That is, a structure is adopted in which the fiber base material for forming the adhesive layer protrudes from the edge of the reinforcing fiber base material forming the FRP material. It is not necessary to impregnate the resin into the protruding portion of the fiber base material through the reinforcing fiber base material for forming the FRP material, and the protruding portion appearing outside can be easily impregnated directly with the resin. It flows into the fiber base material so that the resin to be impregnated wraps around through the protruding portion, and is sufficiently good over the entire fiber base material (that is, sufficiently good with the remaining voids minimized).
- the resin can be impregnated sufficiently satisfactorily over the entire fiber base material.
- Adhesive layer formed with resin fully impregnated over the entire fiber base material and the remaining voids are minimized can exhibit sufficiently high adhesive strength, and it is also possible to minimize the variation in desirable high adhesive strength
- the FRP material is bonded to the structure with a sufficiently high adhesive force through the adhesive layer.
- the FRP material bonded structure to the structure having such a desirable and sufficiently high adhesive force is a structure after bonding, including an intervening structure of an adhesive layer between the structure and the FRP material, and FRP.
- the protruding length of the adhesive layer from the edge of the FRP material is preferably 5 mm or more and 50 mm or less.
- the linear distance from the edge of the reinforcing fiber substrate to the edge of the fiber-based substrate that protrudes from the edge is the protruding length. If the distance between the edges of the fiber base material and the edge of the reinforcing fiber base material is not parallel, for example, the maximum distance between the two edges is set. take.
- the protruding portion is a portion of the resin that is impregnated toward the entire fibrous base material, particularly the protruding portion from the edge of the reinforcing fiber base material for forming the FRP material of the fibrous base material for forming the adhesive layer. Since it becomes an entrance, it is difficult to expect good and quick resin impregnation if the overhang length is too small. From the viewpoint of good and quick resin impregnation, a large protrusion length may be used, but if the protrusion length becomes too large, there is no need for an adhesive layer portion that does not substantially repair or reinforce the structure. Therefore, it is preferable to keep the protrusion length to the minimum necessary, that is, from the above reason, it is more preferably 10 mm or more and 30 mm or less. preferable.
- the FRP material adhesion structure to the structure according to the present invention can be applied particularly preferably when the installation surface of the adhesion layer of the structure is made of steel, but the installation surface of the adhesion layer of the structure is made of FRP. Applicable to the case.
- the present invention can be applied when the installation surface of the adhesive layer of the structure is made of a material capable of exhibiting a sufficiently high adhesive force of the adhesive layer.
- the fiber base material used for the adhesive layer is not particularly limited.
- the fiber volume content of the adhesive layer is not particularly limited, but if it is too low, it will not be different from a simple resin adhesive layer, the strength of the adhesive layer itself will be too low, and the FRP material for repair and reinforcement will peel off from the structure. On the other hand, if it is too high, the resin impregnation rate from the protruding portion will decrease or the resin will be difficult to impregnate, making it difficult to sufficiently impregnate the entire fiber base material. As a result, it may be difficult to exhibit a sufficiently high adhesive force of the adhesive layer, and therefore the fiber volume content is preferably in the range of 5% to 40%. Since the adhesive layer itself is responsible for exhibiting high adhesive strength and does not aim at increasing the reinforcing strength, an extremely high fiber volume content is not necessary.
- the fiber base material used for the adhesive layer is desired to have good and quick resin impregnation from the protruding portion to the entire fiber base material.
- the fiber base material has a certain level. It is preferable that the base material be easily impregnated with the resin.
- the ease of impregnation of the resin into the substrate can be expressed, for example, using the air permeability of the substrate as a scale.
- the air permeability of the substrate is generally considered as a measure corresponding to the void cross-sectional area of the substrate.
- the range is from 0.05 mm 2 / mm to 1.0 mm 2 / mm. It is preferable.
- the resin of the adhesive layer is preferably the same as the matrix resin of the FRP material. If the same resin is used, the affinity between the adhesive layer and the FRP material is extremely high, and problems such as delamination do not occur between the two layers.
- the adhesion structure of the FRP material to the structure according to the present invention extends through the installation portion of the FRP material (particularly, it extends in the surface direction of the FRP material at an intermediate position in the thickness direction of the FRP material to be installed). And an intermediate suction fiber base material that protrudes from the edge of the FRP material, and the intermediate suction fiber base material forms an adhesive layer at a portion of the FRP material protruding from the edge of the FRP material. It is also possible to adopt a form that overlaps with.
- the intermediate suction fiber base material is desirably a base material that is easily impregnated with resin, and is preferably a base material having a high air permeability described above.
- the present invention A method for bonding an FRP material to a structure, Surface treatment of the adhesion surface of the structure; A fiber base material that forms an adhesive layer and a reinforcing fiber base material that forms an FRP material are arranged in this order on the adhesive surface of the structure so that the fiber base material protrudes from the edge of the reinforcing fiber base material. And temporarily fastening both base materials; Sealing the fibrous base material and the reinforcing fiber base, and reducing the pressure inside the sealed interior; Injecting resin into the reduced-pressure sealed interior; Curing and curing the injected resin; A method for adhering an FRP material to a structure is also provided.
- the adhesion surface of the structure is preferably made of steel, but the method according to the present invention is also applicable when the adhesion surface of the structure is made of FRP. Applicable.
- the present invention can be applied to the case where the bonding surface of the structure is made of a material that can be sealed and can exhibit a sufficiently high bonding force of the bonding layer.
- the same resin as the injected resin can be applied to the adhesion surface of the structure before installing the fiber-based substrate.
- the bonding surface can be formed in advance on the flat surface before forming the bonding layer by resin application, and desirable bonding
- the layer can be easily formed, and the adhesive strength of the adhesive layer to the adhesive surface of the structure can be secured in advance to a desired level by resin application.
- the uncured resin applied in advance can also be used for temporary fastening when installing the fiber base material and the reinforcing fiber base material.
- the fiber base material it is preferable to inject a resin simultaneously into the fiber base material and the reinforcing fiber base material. If it does in this way, the addition site
- the fiber base material it is preferable to use a base material having excellent resin fluidity as much as possible. For example, glass fiber chopped strand mat, glass fiber continuous strand mat, glass fiber mesh sheet, glass fiber surface mat, polypropylene A mesh sheet, an epoxy resin mesh sheet, or the like can be used.
- the intermediate suction fiber base material is extended through the installation portion of the reinforcing fiber base material, and the reinforcing fiber base material is provided. While protruding from the edge of a base material, it can also arrange
- the fiber base material for intermediate suction it is preferable to use a substrate that is as excellent in resin fluidity as possible. For example, glass fiber chopped strand mat, glass fiber continuous strand mat, glass fiber mesh sheet, glass fiber surface A mat, a polypropylene mesh sheet, an epoxy resin mesh sheet, or the like can be used.
- the reinforcing fiber base material for forming the FRP material is relatively thick and is difficult to be impregnated with resin in the thickness direction.
- the resin fiber can be satisfactorily impregnated into the reinforcing fiber base material for forming the FRP material through the intermediate suction fiber base material disposed in the middle in the thickness direction.
- the entire fiber base material and the reinforcing fiber base material are covered between the temporary fixing step and the sealing and decompression step, and the injected resin is cured. It can also have the process of arrange
- the film-like member covering the whole and the sheet-like member provided to promote the resin flow can be easily removed together with the release substrate, and the efficiency of the entire work can be improved. .
- the bonding structure and bonding method of the FRP material to the structure according to the present invention it is possible to easily and surely repair and reinforce the existing structure with the necessary FRP material at the construction site.
- the target repair and reinforcement performance by the FRP material can be expressed more reliably.
- the protruding portion of the adhesive layer can contribute to the relaxation of stress generated at the end portion, and can be made difficult to peel even against repeatedly generated force.
- FIG. 1 shows an FRP material adhesion structure and adhesion method to a structure according to an embodiment of the present invention, and particularly shows a state during construction.
- reference numeral 100 denotes a structure, particularly a deteriorated steel structure, and an FRP material for repair and reinforcement is bonded onto the target surface of the steel structure 100 as an object for repair and reinforcement.
- FIG. 1 shows a state in which the reinforcing fiber base (before the matrix resin impregnation and curing) is arranged before the FRP material made of the reinforcing fiber base and the matrix resin is formed.
- dust is removed or unnecessary irregularities are eliminated from the surface (adhesion surface 1) of the steel structure 100 to be repaired and reinforced.
- Surface treatment is performed. This surface treatment is not particularly limited as long as the formation of the adhesive layer in the present invention is carried out smoothly, and is usually performed for cleaning for removing oil and rust, or in some cases, surface polishing with sandpaper or the like. Good.
- a layer of the fiber-based substrate 2 for forming the bonding layer and a layer of the reinforcing fiber substrate 3 for forming the FRP material are in this order.
- both the substrates 2 and 3 are temporarily fastened.
- the protruding length of the fiber base material 2 is set to, for example, 5 mm or more, and preferably 10 mm or more.
- the form of the protruding part 4 from the edge of the reinforcing fiber base 3 of the fiber base material 2 is a form of protruding from at least one edge of the reinforcing fiber base 3, preferably from both edges. Any form that protrudes from the edge of substantially the entire circumference can be employed.
- the form of the fiber-based substrate 2 is, for example, at least a mat-like form in which continuous fibers are randomly oriented, a mesh sheet-like form having voids, or a mat-like form composed of short cut fibers. It is formed in either form.
- the kind of fiber used for the fiber-type base material 2 is not specifically limited,
- the kind equivalent to the kind of fiber used for the reinforcement fiber base material 3 for forming FRP material for example, carbon fiber, glass Examples thereof include fibers, aramid fibers, phenol fibers, and combinations thereof.
- the adhesive layer is a layer that bears load transmission, other organic fibers and inorganic fibers can be used.
- the layer thickness of the adhesive layer after formation or the fiber-based substrate 2 may not be so large, for example, the bulk thickness before impregnation with the resin
- the thickness may be about 0.05 to 0.70 mm.
- the fiber volume content of the fiber-based substrate 2 with respect to the adhesive layer formed after resin impregnation and curing is preferably in the range of 5 to 40% as described above.
- the fiber base material 2 is mainly impregnated with the resin from the protruding portion 4 as described later.
- an index indicating the ease of resin impregnation it is preferable that the gap cross-sectional area per unit width of the single fiber-based substrate 2 is 0.05 mm 2 / mm to 1.0 mm 2 / mm.
- poured later may be apply
- the hardening state of resin at the time of moving to the following process is not limited, it can also be used as a temporary attachment of a fiber type base material and a reinforced fiber base material.
- the fiber base material 2 and the reinforcing fiber base material 3 are sealed, the sealed interior is decompressed, and the resin is placed in the decompressed sealed interior. Injected.
- the release base that covers the entire fiber base material 2 and the reinforcing fiber base material 3 between the temporary fixing step and the sealing and decompression step described above and can be peeled off after the injection resin is cured.
- Material 5 is arranged.
- a fluororesin-coated glass fiber cloth, a polyethylene sheet, or a polypropylene sheet can be used as the release substrate 5.
- the release substrate 5 is placed on the resin fluidized sheet 6 and the sealing film 7 described later is peeled off. It is possible to ensure that the sealing film 7 can be peeled off by peeling the release substrate 5, or when the sealing film 7 can be peeled without the release substrate 5, the release substrate 5. It is also possible to omit the installation.
- the resin fluidized sheet 6 (also referred to as a resin diffusion sheet) is used. Called). Since the resin from the resin fluidized sheet 6 is impregnated into the reinforcing fiber base 3 and the fiber base 2, a resin-permeable base is used for the release base 5.
- a nylon mesh sheet, a polyethylene mesh sheet, a polyester mesh sheet, or a polypropylene mesh sheet can be used as the resin fluidized sheet 6.
- the whole including the fiber-based substrate 2 and the reinforcing fiber substrate 3 is covered with a sealing film 7, and the inside is sealed by a sealant 8.
- a sealing film 7 for example, a nylon film, a polyethylene film, a polyester film, a silicon sheet or the like can be used.
- the sealed interior 9 covered with the sealing film 7 is evacuated through a vacuum suction pump 10, and the resin is injected into the decompressed sealed interior 9. In the form shown in FIG.
- the liquid resin 14 in the resin pot 13 provided outside is supplied to the resin injection path 12 disposed on the resin injection side 11 by suction in a reduced pressure state, and the supplied resin 14 is sent and impregnated mainly from there through the resin fluidized sheet 6 toward the reinforcing fiber base 3 and is mainly impregnated into the fiber base material 2 from the protruding portion 4 of the fiber base material 2.
- a vacuum suction path 16 is disposed on the vacuum suction side 15, and exhaust from the sealed inside 9 and decompression suction for resin injection are performed by exhaust through the vacuum suction pump 10. The resin impregnation into the reinforcing fiber base 3 and the resin impregnation into the fiber base material 2 are performed substantially simultaneously.
- the injected resin is cured and cured. Curing may be performed at normal temperature, but if there is a temperature more suitable for curing, the ambient temperature may be controlled to that temperature.
- the FRP material (not shown) in the present invention in which the reinforcing fiber base material 3 is impregnated and cured by curing the resin, and the adhesive layer (not shown in the figure) in which the fiber base material 2 is impregnated and cured with the resin. ) Is formed.
- the protruding portion protruding from the edge of the FRP material, which is equivalent to that shown in FIG. 1, is left as it is.
- the road 16 is peeled off together with the release substrate 5.
- the FRP material is bonded to the steel structure 100 with a stable and high adhesive force through the adhesive layer formed in this way, and it becomes possible to exhibit desirable repair and reinforcement performance of the steel structure 100. .
- FIG. 2 shows an adhesion structure and an adhesion method of an FRP material to a structure according to another embodiment of the present invention, and particularly shows a state at the time of construction.
- an intermediate suction fiber base material 21 is provided in the step of arranging the reinforcing fiber base material 3. It extends in the installation part of the base material 3 and protrudes from the edge of the reinforcing fiber base material 3 so as to overlap the fiber base material 2 (over the protruding part 4 of the fiber base material 2) at the protruding part. Placed in.
- the reinforcing fiber base material 3 is divided in the thickness direction, and the intermediate suction fiber base material 21 is placed on the first-stage reinforcing fiber base material 3. Then, the second-stage reinforcing fiber base material 3 is laminated thereon. Except for the installation of the intermediate suction fiber base material 21, the configuration is substantially the same as that shown in FIG. 1. Therefore, the same parts as those in FIG. 1 in FIG. .
- the intermediate suction fiber base material 21 By placing the intermediate suction fiber base material 21 as described above so as to extend through the installation portion of the reinforcing fiber base material 3 and protrude from the edge of the reinforcing fiber base material 3, it flows from the protruding portion.
- the injected resin can quickly flow through the intermediate suction fiber base material 21 and be impregnated into the reinforcing fiber base material 3. That is, resin impregnation to the entire reinforcing fiber base 3 in the sealed interior 9 can be promoted by resin impregnation through the intermediate suction fiber base 21.
- the intermediate suction fiber base as described above is provided in the middle in the thickness direction.
- the reinforced fiber base material by the laminated carbon fiber sheet has a taper (long) having a fixing length of 100 mm in which seven layers are continuous and shortening the carbon fiber sheet at 10 mm intervals toward the end of the carbon fiber sheet. 60 mm).
- a release substrate was placed on the fiber substrate and the reinforcing fiber substrate, and a resin fluid sheet was installed thereon.
- a sealing tape, a suction tube, and a resin injection tube were installed around the base material, and a sealing film was placed on top of the sealing tape. Then, the space was covered with the sealing film, and the space covered with the sealing film was evacuated. .
- the two-component room temperature curing epoxy resin AUP40 (manufactured by Toray ACE) was injected and impregnated with the resin, then the vacuum pump was stopped, both tubes were sealed, and the resin was cured. Cured at room temperature until
- the specimen was cut out to have a width of 15 mm, and a tensile shear adhesion specimen was prepared. Using a mechanical testing machine, both ends of the shear adhesion test specimen were grasped, and the specimen was pulled until the CFRP peeled off.
- the substrate thickness (mm) was measured according to the JIS R 7602 carbon fiber fabric test method. Next, the substrate was cut out at 100 mm ⁇ 100 mm, and the weight per 10,000 mm 2 (fiber weight per unit area) was measured. Next, the density thickness of the base material was calculated from the density of the material used by the following equation. Then, by subtracting the density thickness from the substrate thickness, the void cross-sectional area (mm 2 / mm) per unit width was calculated.
- Density thickness (mm) fiber weight per unit area (g / m 2 ) ⁇ fiber density (g / cm 3 )
- One sheet cross-sectional area (mm 2 / mm) base material thickness (mm) ⁇ density thickness (mm)
- Adhesive strength (N / mm 2 ) tensile load (N) / (test specimen width (mm) ⁇ fixing length (mm))
- each test level is compared with the average AVE.
- the standard deviation ⁇ was considered, and the comparison was performed using the adhesive strength generated with a probability of 99.7%.
- the fiber base material for the adhesive layer protrudes from the reinforcing fiber base material, the average and variation are reduced, and the adhesive strength is improved. Further, when a mesh sheet is used for the fiber base material, or when a resin is applied to the adhesive layer in advance, the adhesive strength can be further improved.
- the present invention can be applied not only to infrastructure structures but also to repair and reinforcement of metal-based materials such as aircraft, automobiles and ships.
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Abstract
Description
構造物に対するFRP材の接着方法であって、
構造物の接着面を表面処理する工程と、
前記構造物の接着面上に、接着層を形成する繊維系基材とFRP材を形成する補強繊維基材を、この順に、繊維系基材が補強繊維基材の縁端からはみ出るように配置し、両基材を仮留めする工程と、
前記繊維系基材と補強繊維基材を密封し、密封内部を減圧する工程と、
減圧された密封内部に樹脂を注入する工程と、
注入された樹脂を硬化、養生させる工程と、
を含むことを特徴とする、構造物へのFRP材の接着方法についても提供する。
図1は、本発明の一実施形態に係る構造物へのFRP材の接着構造および接着方法を示しており、とくに施工時の状態を示している。図1においては、100は、構造物、とくに劣化した鋼構造物を示しており、この補修、補強の対象としての鋼構造物100の対象表面上に、補修、補強のFRP材が接着される。図1は、補強繊維基材とマトリックス樹脂からなるFRP材が形成される前の(マトリックス樹脂含浸、硬化前の)補強繊維基材が配置された状態を示している。
厚み12mm、幅200mm、長さ250mmの2枚の鋼平板(弾性率206kN/mm2)を、無結合のまま突き合わせた状態で、突き合わせ部を含む2枚の鋼平板上に、接着層用の繊維系基材を敷き、その上から本発明におけるFRP材構成用の、長さの異なる一方向炭素繊維シート トレカクロスUM46-40(東レ製、炭素繊維量400g/m2、弾性率440kN/mm2)を7層積層した。
JIS R 7602炭素繊維織物試験方法に準じて、基材厚み(mm)を測定した。次に基材を100mm×100mmで切り出し、10,000mm2あたりの重量(繊維目付量)を測定した。次に使用する材料の密度から基材の密度厚みを次式で算定した。そして、基材厚みから密度厚みを引くことで、1枚の単位幅あたりの空隙断面積(mm2/mm)を算定した。
密度厚み(mm)=繊維目付量(g/m2)÷繊維密度(g/cm3)
1枚の空隙断面積(mm2/mm)=基材厚み(mm)-密度厚み(mm)
力学試験機で得られた引張荷重に対して、試験体幅と定着量を掛けた面積で除したものを接着強度とした。
接着強度(N/mm2)=引張荷重(N)/(試験体幅(mm)×定着長(mm))
2 繊維系基材
3 補強繊維基材
4 はみ出し部
5 離型基材
6 樹脂流動シート
7 密閉性フィルム
8 シーリング材
9 密封内部
10 真空吸引ポンプ
11 樹脂注入側
12 樹脂注入道
13 樹脂ポット
14 樹脂
15 真空吸引側
16 真空吸引道
21 中間吸引用繊維系基材
100 鋼構造物
Claims (16)
- 構造物に対するFRP材の接着構造であって、該構造物とFRP材との間に、繊維系基材と樹脂で形成された接着層が介在し、かつFRP材の縁端から接着層がはみ出ていることを特徴とする構造物へのFRP材の接着構造。
- 前記接着層の前記FRP材の縁端からのはみ出し長さが5mm以上50mm以下である、請求項1に記載の構造物へのFRP材の接着構造。
- 前記構造物の前記接着層の設置面が鋼からなる、請求項1または2に記載の構造物へのFRP材の接着構造。
- 前記構造物の前記接着層の設置面がFRPからなる、請求項1または2に記載の構造物へのFRP材の接着構造。
- 前記接着層に用いられる繊維系基材が、連続した繊維がランダムに配向されたマット状形態、空隙を有するメッシュシート状形態、短くカットされた繊維で構成されたマット状形態の少なくともいずれかの形態に形成されている、請求項1~4のいずれかに記載の構造物へのFRP材の接着構造。
- 前記接着層の繊維体積含有率が10%~40%の範囲にある、請求項1~5のいずれかに記載の構造物へのFRP材の接着構造。
- 前記接着層に用いられる繊維系基材の、1枚かつ単位幅あたりの空隙断面積が0.05mm2/mmから1.0mm2/mmの範囲にある、請求項1~6のいずれかに記載の構造物へのFRP材の接着構造。
- 前記接着層の樹脂は、前記FRP材のマトリックス樹脂と同じである、請求項1~7のいずれかに記載の構造物へのFRP材の接着構造。
- 前記FRP材の設置部中を延び、かつFRP材の縁端からはみ出る中間吸引用繊維系基材が設けられ、該中間吸引用繊維系基材がFRP材の縁端からはみ出た部位で接着層を形成する繊維系基材の上に重なっている、請求項1~8のいずれかに記載の構造物へのFRP材の接着構造。
- 構造物に対するFRP材の接着方法であって、
構造物の接着面を表面処理する工程と、
前記構造物の接着面上に、接着層を形成する繊維系基材とFRP材を形成する補強繊維基材を、この順に、繊維系基材が補強繊維基材の縁端からはみ出るように配置し、両基材を仮留めする工程と、
前記繊維系基材と補強繊維基材を密封し、密封内部を減圧する工程と、
減圧された密封内部に樹脂を注入する工程と、
注入された樹脂を硬化、養生させる工程と、
を含むことを特徴とする、構造物へのFRP材の接着方法。 - 前記構造物の接着面が鋼からなる、請求項10に記載の構造物へのFRP材の接着方法。
- 前記構造物の接着面がFRPからなる、請求項10に記載の構造物へのFRP材の接着方法。
- 前記注入される樹脂と同じ樹脂を、前記繊維系基材を設置する前に前記構造物の接着面に塗布する、請求項10~12のいずれかに記載の構造物へのFRP材の接着方法。
- 前記繊維系基材と前記補強繊維基材に対して同時に樹脂を注入する、請求項10~13のいずれかに記載の構造物へのFRP材の接着方法。
- 前記補強繊維基材の配置工程において、中間吸引用繊維系基材を、補強繊維基材の設置部中を延び、補強繊維基材の縁端からはみ出るとともに、はみ出た部位で前記繊維系基材の上に重なるように配置する、請求項10~14のいずれかに記載の構造物へのFRP材の接着方法。
- 前記仮止め工程と前記密封、減圧工程との間に、前記繊維系基材と補強繊維基材の全体を覆い、注入樹脂硬化後に引き剥がし可能な離型基材を配置する工程を有する、請求項10~15のいずれかに記載の構造物へのFRP材の接着方法。
Priority Applications (7)
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EP18790996.5A EP3617424A4 (en) | 2017-04-25 | 2018-04-23 | STRUCTURAL FRP MATERIAL BINDING CONSTRUCTION AND BINDING PROCESS |
CN201880021369.7A CN110494617B (zh) | 2017-04-25 | 2018-04-23 | Frp材料与结构体的粘合结构和粘合方法 |
BR112019019665-0A BR112019019665B1 (pt) | 2017-04-25 | 2018-04-23 | Construção de ligação de um material de plástico reforçado com fibra a uma estrutura existente e método de ligação de um material de plástico reforçado com fibra a uma estrutura existente |
JP2018532800A JP7075343B2 (ja) | 2017-04-25 | 2018-04-23 | 構造物へのfrp材の接着構造および接着方法 |
US16/607,542 US20200070429A1 (en) | 2017-04-25 | 2018-04-23 | Bond construction and bonding method of frp material to structure |
KR1020197028117A KR102539633B1 (ko) | 2017-04-25 | 2018-04-23 | 구조물에의 frp재 접착 구조 및 접착 방법 |
PH12019502064A PH12019502064A1 (en) | 2017-04-25 | 2019-09-11 | Bond construction and bonding method of frp material to structure |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020109395A1 (de) * | 2018-11-29 | 2020-06-04 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zur herstellung eines prüfkörpers |
JP2021098374A (ja) * | 2019-04-16 | 2021-07-01 | 日本製鉄株式会社 | 金属−繊維強化樹脂複合体 |
EP3904185A4 (en) * | 2019-03-18 | 2022-10-05 | Nippon Steel Corporation | REINFORCING STEEL ELEMENT FOR MOTOR VEHICLE |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112026201A (zh) * | 2020-07-27 | 2020-12-04 | 国营芜湖机械厂 | 一种复合材料快速修理金属裂纹损伤的方法 |
KR102300526B1 (ko) * | 2021-04-08 | 2021-09-09 | 국방과학연구소 | 하이브리드 복합 섬유 재료, 제조 방법 및 이를 포함하는 비행체 날개 구조물 |
CN115874841B (zh) * | 2022-12-08 | 2023-07-18 | 水利部交通运输部国家能源局南京水利科学研究院 | 一种预应力frp布均匀加固装置及方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10513515A (ja) | 1995-01-21 | 1998-12-22 | デヴォンポート ロイヤル ドクヤード リミテッド | 構造部材の強化 |
JPH11148230A (ja) | 1997-11-17 | 1999-06-02 | Kfc Ltd | コンクリート構造物の補修または補強方法 |
US5972141A (en) * | 1996-07-18 | 1999-10-26 | Ellyin; Fernand | Carbon fiber-reinforced polymer patch for defect repair of a structural steel component |
JP2000213176A (ja) * | 1999-01-26 | 2000-08-02 | Masatoshi Okura | 既設コンクリ―ト材の表面補強方法 |
JP2007332674A (ja) * | 2006-06-15 | 2007-12-27 | Kawasaki Heavy Ind Ltd | 鋼構造物の補強方法および補強構造 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4104414B2 (ja) * | 2002-10-09 | 2008-06-18 | 東レ株式会社 | 繊維強化樹脂成形体の製造方法 |
KR100513515B1 (ko) | 2002-12-20 | 2005-09-07 | 현대자동차주식회사 | 기어 시험용 지그 |
CN1641130A (zh) * | 2004-01-10 | 2005-07-20 | 周超 | “纤维体外粘贴”进行结构加固的真空袋压法 |
JP2006306057A (ja) * | 2005-03-28 | 2006-11-09 | Toray Ind Inc | Frp構造体の製造方法 |
CN201962964U (zh) * | 2011-03-24 | 2011-09-07 | 广西工学院 | 预应力纤维树脂复合筋嵌贴加固混凝土结构 |
JP6012951B2 (ja) * | 2011-10-27 | 2016-10-25 | 倉敷紡績株式会社 | 構造物の補強繊維シートの末端被覆工法 |
DE102012201518A1 (de) * | 2012-02-02 | 2013-08-08 | Sgl Carbon Se | Verstärkungssystem für Bauwerke |
JP6581404B2 (ja) * | 2015-06-23 | 2019-09-25 | 公立大学法人首都大学東京 | 鋼構造物への構造用部材による増設構造および増設方法 |
-
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- 2018-04-23 WO PCT/JP2018/016473 patent/WO2018199032A1/ja unknown
- 2018-04-23 JP JP2018532800A patent/JP7075343B2/ja active Active
- 2018-04-23 EP EP18790996.5A patent/EP3617424A4/en active Pending
- 2018-04-23 US US16/607,542 patent/US20200070429A1/en not_active Abandoned
- 2018-04-23 KR KR1020197028117A patent/KR102539633B1/ko active IP Right Grant
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2019
- 2019-09-11 PH PH12019502064A patent/PH12019502064A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10513515A (ja) | 1995-01-21 | 1998-12-22 | デヴォンポート ロイヤル ドクヤード リミテッド | 構造部材の強化 |
US5972141A (en) * | 1996-07-18 | 1999-10-26 | Ellyin; Fernand | Carbon fiber-reinforced polymer patch for defect repair of a structural steel component |
JPH11148230A (ja) | 1997-11-17 | 1999-06-02 | Kfc Ltd | コンクリート構造物の補修または補強方法 |
JP2000213176A (ja) * | 1999-01-26 | 2000-08-02 | Masatoshi Okura | 既設コンクリ―ト材の表面補強方法 |
JP2007332674A (ja) * | 2006-06-15 | 2007-12-27 | Kawasaki Heavy Ind Ltd | 鋼構造物の補強方法および補強構造 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3617424A4 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020109395A1 (de) * | 2018-11-29 | 2020-06-04 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zur herstellung eines prüfkörpers |
EP3904185A4 (en) * | 2019-03-18 | 2022-10-05 | Nippon Steel Corporation | REINFORCING STEEL ELEMENT FOR MOTOR VEHICLE |
JP2021098374A (ja) * | 2019-04-16 | 2021-07-01 | 日本製鉄株式会社 | 金属−繊維強化樹脂複合体 |
CN113710470A (zh) * | 2019-04-16 | 2021-11-26 | 日本制铁株式会社 | 金属-纤维增强树脂复合体 |
JP7056779B2 (ja) | 2019-04-16 | 2022-04-19 | 日本製鉄株式会社 | 金属-繊維強化樹脂複合体 |
EP3957474A4 (en) * | 2019-04-16 | 2023-02-08 | Nippon Steel Corporation | METAL/FIBER REINFORCED RESIN COMPOSITE |
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PH12019502064A1 (en) | 2020-09-14 |
CN110494617B (zh) | 2022-07-01 |
JPWO2018199032A1 (ja) | 2020-02-27 |
US20200070429A1 (en) | 2020-03-05 |
CN110494617A (zh) | 2019-11-22 |
BR112019019665A2 (pt) | 2020-04-22 |
KR102539633B1 (ko) | 2023-06-02 |
JP7075343B2 (ja) | 2022-05-25 |
EP3617424A1 (en) | 2020-03-04 |
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