JP2005307697A - Repairing object repair method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repairing object repair method for shortening a work process, providing excellent workability, and filling resin into a defective part (repaired section) such as a crack section securely for repair. <P>SOLUTION: In this repairing object repair method, a curable tape 2 is bonded to cover the repaired section C of a repairing object 1, and resin is poured from a hole formed in a predetermined section of the curable tape 2 through a resin pouring member 5 to peel the tape 2 off thereafter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a repaired method of repair, and more particularly to a repaired method of repair using a curable tape.

  Conventionally, when a repaired object such as a concrete or stone structure has been cracked, it is generally used to repair the cracked part by injecting adhesive or filling it with putty. Has been. For the injection of the adhesive, for example, an adhesive injection device (hereinafter also referred to as “resin injection member”) as shown in Patent Documents 1 to 3 is used.

  The process of repairing a cracked concrete structure using the resin injection member is as follows.

  (1) The surface of the concrete structure is polished with a sander or the like along the crack (surface treatment).

  (2) Apply a putty-like sealant (which hardens after hardening) along the crack.

  (3) Attach the resin injection member from above the sealing material through the pedestal.

  (4) The resin is injected from the resin injection member into the cracked portion.

(5) When the injected resin is cured, the resin injection member is removed, and the sealing material is polished with a Thunder Keren or diamond cup to smooth the concrete surface.
Japanese Patent Publication No. 64-7189 Japanese Examined Patent Publication No. 2-59903 Japanese Patent Publication No. 3-80954

  However, the method of repairing using the resin injecting member is a method with higher work efficiency, such as, for example, curing is required until the putty-like sealing material is cured, and the work for each process takes a lot of time. Was desired. Further, during the operation of injecting the resin, the resin injected from the injection washer may jump out, and the construction operation requires skill. In addition, it is necessary to perform post-treatment such as surface polishing on the cured sealing material by means such as sanding due to appearance problems, and dust and noise are generated during this work, and measures to prevent it are necessary. Moreover, when removing the sealing material, the tool is brought into contact with the protruding portion of the sealing material and mechanically peeled from an inclined posture that is as parallel as possible to the surface, so that the periphery of the repaired part is also damaged. There are quite a few things that need to be improved.

  Accordingly, the object of the present invention is to solve the above-mentioned problems of the prior art by shortening the work process, providing excellent workability, and reliably filling a defective part (repaired part) such as a cracked part with resin. The object is to provide a repair method for repaired objects.

  The above-mentioned subject is achieved by the invention described in each claim. That is, the characteristic configuration of the repaired object repair method according to the present invention is that a curable tape is applied so as to cover a repaired part of the repaired object, and resin is injected from a hole formed in a predetermined part of the curable tape. Resin is injected through the member, and then the curable tape is peeled off.

  According to this configuration, the base surface treatment performed before injecting the resin may be a simple process, and, as in the prior art, it is possible to cure the repaired portion without using a putty-like material as a sealing material. The tape is peeled off after the injected resin is cured, and the troublesome smoothing after the process is virtually unnecessary, making the workability and work environment simple. It is a repair method with excellent work efficiency and high work efficiency.

  As a result, it was possible to provide a repair method for repairing an object that has a short work process, excellent workability, and that can be repaired by reliably filling a defective portion such as a cracked portion with resin.

  It is preferable that the curable tape is any one of a photocurable tape, a hygroscopic curable tape, and a thermosetting tape.

  When a photocurable tape is used as the curable tape, it does not need to be heated as long as it has an appropriate amount of light and is cured in a relatively short time, so that the resin can be injected into the repaired portion thereafter. When a moisture-absorbing curable tape or a thermosetting tape is used, an effect substantially equivalent to that of the photocurable tape can be obtained even at a location where the amount of light is insufficient.

  It is preferable that the curable tape is a transparent photocurable tape, and a primer of the same quality as the curable tape is applied in advance before the photocurable tape is attached to the repaired portion.

  By using a transparent photo-curing tape, the condition of the injected resin can be easily seen, so not only the workability is greatly improved, but also when the resin leaks to the surface quickly and quickly It can be done accurately. In addition, application of a primer that is the same quality as the curable tape ensures that the photocurable tape is attached to the repaired site reliably and stably, making the subsequent resin injection work easier and further improving work efficiency. .

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram for explaining the implementation of the repaired object repair method according to the present embodiment, and FIG. 2 shows the steps of the repair method.

  In the present embodiment, although not shown in the drawings, in the crack opening surface of the concrete structure 1 that is a repaired object, where a cracked part C that is an example of a repaired part has been generated in advance, the mold release is performed at several positions that serve as resin injection ports. Affix the tape (# 1). Since this serves as a mark at the time of resin injection, which will be described later, it is sufficient that the crack opening can be covered, and usually a size of about several cm square is sufficient. The tape is not particularly limited as long as it can be reliably attached to the concrete structure 1 such as cloth or paper.

  Next, a liquid photocurable resin, which is a primer, is applied to the cracked portion C of the concrete structure 1 with a brush so as to cover the crack opening surface (# 2). As the photocurable resin, it is preferable to use a photocurable vinyl ester resin (for example, trade name “Lipoxy” manufactured by Showa Polymer Co., Ltd.). As described below, when using a photo-curable vinyl ester resin as a curable tape to be applied along the crack opening surface, both of them are familiar, and the curable tape is applied reliably and stably. Because it can. Also, before applying the photo-curing resin with a brush, remove dirt and dust on the concrete surface in advance using a disk sander, wire brush, etc., and then blow air or use a waste cloth for concrete. Wipe the surface of the structure.

  On the surface of the applied primer, as shown in FIG. 1, a transparent photocurable vinyl ester resin tape which is a kind of curable tape (for example, trade name “Lipoxy” manufactured by Showa Polymer Co., Ltd., hereinafter “ 2) (sometimes called “photo-curable tape”) (# 3). For example, as shown in FIG. 3, the photocurable tape 2 has a structure in which a plurality of fiber shaft yarns 7 not impregnated with the vinyl ester resin 6 are juxtaposed in the width direction as shown in FIG. 3. In this case, only one is displayed.) Since the core material is woven in the longitudinal direction, the photocurable tape can be easily peeled after the resin is cured, and the base material is not damaged at the time of peeling. In addition, the structure of a photocurable tape is not limited to the structure shown in FIG. 3, A nonwoven fabric, glass fiber, etc. may be used as a base material.

  Thus, in this embodiment, since a putty-like sealing material as used in the prior art is not used, cracks can be seen from the outside through the transparent photocurable tape 2. In addition, it is possible to accurately grasp the state of resin injection at the time of construction, properly inject the resin, and to take appropriate measures when a problem occurs. However, it is not always necessary that the photocurable tape 2 has transparency.

  After the photocurable tape 2 is applied, a liquid photocurable resin is applied to the surface again with a brush. And although the photocurable tape 2 is hardened by light irradiation, it is irradiated and hardened suitably using a UV lamp, a black lamp, etc. in the place where light is weak.

  After the photo-curing tape 2 is cured in about 15 to 30 minutes by light irradiation, a punch is applied to the release tape sticking position that is first stuck on the crack opening surface of the concrete structure 1. A hole of a predetermined size (usually about 5 to 10 mm) is opened to form a resin injection port (# 4). A resin injection member 5 having a base 3 and a cylindrical portion 4 connected to the base 3 is mounted so as to cover the opening (# 5). The resin injection member 5 is mounted using a heat-adhesive tape (for example, an instantaneous adhesive sheet (FB-MG22D (trade name): manufactured by Nitto Shinko Co., Ltd.), etc.) at the mounting position in order to ensure fixing. The resin injecting member 5 is placed by applying a heat-bonded or liquid photo-curing resin, and is cured and fixed.

  A filling resin such as an epoxy resin is sufficiently injected deeply into the cracked portion C through the resin injection member 5 (# 6). The structure of the resin injection member 5 is not particularly limited as long as a predetermined amount of resin can be injected into the cracked portion C, but the base 3 and the cylindrical portion 4 are securely connected to each other. It is preferable that the resin is sealed with an O-ring or the like so that the resin does not easily leak from the connection portion. The cylinder part 4 is composed of a pressure buffer tube made of an elastic member such as rubber, and a check valve is disposed in the cylinder part near the connection part with the base 3 to prevent backflow of the injected resin. It is convenient to have a structure that can reliably inject a certain amount of resin.

  If there are multiple cracks C in the concrete structure 1 or if one crack is extremely long, the resin is injected into each crack or in several locations (or simultaneously at multiple locations). After confirming that the resin is cured, the resin injection member 5 is removed and the photocurable tape 2 is peeled off (# 7). The photocurable tape 2 is easily peeled off by heating the surface of the photocurable tape 2 using an iron or the like heated to a surface temperature of about 150 to 220 ° C.

  Thereafter, in this embodiment, the injection process is completed without particularly smoothing the surface. However, in the case where the photocurable tape 2 is difficult to peel off, it is finished using a tool such as a spatula. The repair is completed (# 8). In particular, when using an ultrasonic spatula (for example, an ultrasonic peeling machine: manufactured by Taga Electric Co., Ltd., SonoSpliter, ultrasonic vibration peeling machine Model No. SS · 200) or a vibration scraper (manufactured by Bosch, PSE180E type), Peeling becomes easier and workability is improved, which is more preferable. When such post-processing is performed, there is no need for any work that generates noise or dust, such as sanding as in the case of implementing the prior art.

  In accordance with the construction sequence of FIG. 2, a liquid photocurable resin was previously brushed as a primer along the cracked portion of concrete under sunlight, and then a photocurable tape was applied and cured. The curing time was about 20 minutes. As the photocurable tape, a transparent photocurable vinyl ester resin having a thickness of about 125 μm and a width of 50 mm (trade name “Lipoxy” manufactured by Showa Kogyo Co., Ltd.) was used. After applying the photocurable tape, a hole of about φ8 mm was formed in the photocurable tape using a punch. Using “BL injector (trade name): manufactured by Showbond Construction Co., Ltd.” as the resin injection member, and using the instant adhesive sheet (FB-MG22D (trade name): manufactured by Nitto Shinko Co., Ltd.) as the base And fixed to the back of the photocurable tape. Then, the BL injector main body (rubber tube containing the repair injection solution) was attached to the base, and the resin was injected into the cracked portion.

  In repairing a crack repaired part of the same area, the work of the present example was completed in about half the construction time as compared with the conventional repair method using a putty-like sealing material.

[Another embodiment]
(1) In the above embodiment, an example in which resin is injected into a cracked portion of concrete has been shown. However, the repaired object of the present invention is not limited to this, and various stone structures, stone products, wooden buildings, wooden bridges, etc. The present invention can be applied to a wooden structure, a wooden product, a resin structure, and various resin products, and the repaired part is not limited to a cracked part, but can be applied to various repaired parts having a dent.
(2) In the above embodiment, an example in which a photocurable tape is used as the curable tape has been shown. However, instead of this, a hygroscopic curable tape (for example, a cyanoacrylate resin tape. Product name: double-sided adhesive tape N) -5401 manufactured by Nitto Denko Corporation) may be used. In the same manner as in the above embodiment, this moisture-absorbing curable tape is cured by using moisture in the air after being attached to a location where a crack location C is generated.
(3) Furthermore, a thermosetting tape may be used instead of the photocurable tape. In this case, the same effect as that of the photocurable tape can be exhibited. As the thermosetting tape, a base material such as nonwoven fabric impregnated with polyurethane, unsaturated polyester, diallyl phthalate, epoxy, silicone, acrylic resin, or the like can be used.

Explanatory drawing which implements the crack repairing method which concerns on one Embodiment of this invention. The flowchart explaining the crack repair method which concerns on one Embodiment of this invention. Partial longitudinal sectional view of the curable tape of FIG.

Explanation of symbols

1 Repair object 2 Curing tape 5 Resin injection member C Repair location

Claims (3)

A curable tape is applied so as to cover the repaired part of the repaired object, a resin is injected through a resin injection member from a hole formed in a predetermined part of the curable tape, and then the curable tape is peeled off. Repair method for repaired items. The method of repairing an object to be repaired according to claim 1, wherein the curable tape is one of a photocurable tape, a moisture curable tape, and a thermosetting tape. 3. The repair according to claim 1, wherein the curable tape is a transparent photocurable tape, and a primer of the same quality as the curable tape is applied in advance before the photocurable tape is applied to the repaired portion. How to repair things.

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