JP2002131248A - Nondesctructive inspection method using crazing-mending agent for concrete with contrasting performance - Google Patents
Nondesctructive inspection method using crazing-mending agent for concrete with contrasting performanceInfo
- Publication number
- JP2002131248A JP2002131248A JP2000329838A JP2000329838A JP2002131248A JP 2002131248 A JP2002131248 A JP 2002131248A JP 2000329838 A JP2000329838 A JP 2000329838A JP 2000329838 A JP2000329838 A JP 2000329838A JP 2002131248 A JP2002131248 A JP 2002131248A
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- JP
- Japan
- Prior art keywords
- crack
- contrast
- contrasting
- concrete
- performance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Working Measures On Existing Buildindgs (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コンクリートに発
生したひび割れを非破壊的に検査を行う技術分野と、そ
の際に使用するひび割れ補修剤の技術分野に属する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of nondestructively inspecting for cracks generated in concrete and the technical field of crack repairing agents used at that time.
【０００２】[0002]
【従来の技術】コンクリート構造物に発生したひび割れ
の検査・補修は、初めにひび割れの検査が行われ、ひび
割れ開口幅がある基準を上回った場合において、補修が
必要と判断されている。そして現状の補修作業は、補修
対象となったひび割れに対して、エポキシ系接着剤を注
入するための注入口をひび割れに取り付け、ひび割れか
ら接着剤が漏れないようにひび割れ全体をシール材にて
シールし、補修のみを目的とした接着剤を注入している
方法であり、補修作業が確実に行われたかどうかを確認
する手段がないとの問題があった。2. Description of the Related Art Inspection and repair of cracks generated in a concrete structure are firstly inspected for cracks, and it is determined that repair is necessary when the crack opening width exceeds a certain standard. At the current repair work, for the cracks to be repaired, an injection port for injecting epoxy adhesive is attached to the crack, and the entire crack is sealed with a sealing material so that the adhesive does not leak from the crack. However, this is a method in which an adhesive is injected only for the purpose of repair, and there is a problem that there is no means for confirming whether the repair work has been performed reliably.
【０００３】[0003]
【発明が解決しようとする課題】従来の工法では、ひび
割れ補修作業が行われた後、作業が確実に行われたかど
うかを確認する手段がないとの問題があった。また、補
修を行ったひび割れの深さを知ることも出来なかった。
しかし、補修剤に造影性能を持たせたもの（造影補修剤
と呼ぶ）を使用することによって、補修したひび割れを
Ｘ線撮影により造影補修剤がひび割れにどの程度充填し
ているのか確認することが可能となる。また、補修を行
ったひび割れに対して、Ｘ線撮影を移動しながら連続に
行うことによって、写し出されたＸ線フィルムの画像か
ら、ひび割れの先端位置を計測することが可能となる。
この様に、本発明が解決しようとする課題は、造影性能
を持つ補修剤の提案とこれを用いた非破壊検査技術の提
案である。The conventional construction method has a problem in that after crack repair work is performed, there is no means for confirming whether the work has been performed reliably. Also, it was not possible to know the depth of cracks that were repaired.
However, by using a repair agent that has enhanced contrast performance (referred to as a contrast repair agent), it is possible to check the extent to which the repair agent has filled the crack by X-ray photography. It becomes possible. Further, by continuously performing X-ray photography while moving the repaired crack, it is possible to measure the position of the tip of the crack from the captured image of the X-ray film.
As described above, the problem to be solved by the present invention is a proposal of a repair agent having an imaging performance and a proposal of a nondestructive inspection technique using the same.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するた
め、本発明では造影効果の高い金属微粉末（例えばタン
グステン酸カルシウム）とエポキシ樹脂系接着剤を撹拌
混合した造影補修剤の開発を行い、これを用いてコンク
リート構造物に発生したひび割れの検査と同時に補修を
非破壊的に行う技術を提案するものである。Means for Solving the Problems In order to solve the above problems, the present invention has developed a contrast repairing agent in which a metal fine powder having a high contrast effect (for example, calcium tungstate) and an epoxy resin-based adhesive are mixed with stirring. The present invention proposes a technology for non-destructively repairing a concrete structure at the same time as inspection for cracks generated in the structure.
【０００５】[0005]
【発明の実施の形態】以下、本発明の造影性能を持つコ
ンクリート用ひび割れ補修剤の作製方法及び実施例につ
いて詳細に説明する。図１（１）は造影補修剤の作製状
況を示している。１はエポキシ樹脂系接着剤、２は撹拌
用容器、３は撹拌ミキサー、４はふるい、５は造影効果
の高い金属微粉末を示す。はじめに、エポキシ樹脂系接
着剤を撹拌用容器に入れる。この時の重量を測定してお
き、この重量の３割〜５割の量の金属微粉末を、ふるい
（ふるい目０．１５ｍｍ以下）を用いて、少しずつ撹拌
用容器に入れ、同時に高速撹拌ミキサーを用いて、均一
になるまで撹拌混合する。（２）は撹拌混合した造影補
修剤を、ふるい（ふるい目０．１５ｍｍ以下）にかけ、
エポキシ樹脂系接着剤と混ざりきれなかった金属微粉末
の固まりを取り除き、造影補修剤の完成となる。６は完
成した造影補修剤を示す。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method for preparing a crack repairing agent for concrete having contrast performance of the present invention and examples thereof will be described in detail. FIG. 1A shows the state of preparation of the contrast repair agent. 1 denotes an epoxy resin adhesive, 2 denotes a stirring container, 3 denotes a stirring mixer, 4 denotes a sieve, and 5 denotes a metal fine powder having a high contrast effect. First, an epoxy resin-based adhesive is placed in a stirring container. The weight at this time is measured, and 30% to 50% of this weight of the metal fine powder is put into a stirring vessel little by little using a sieve (a sieve mesh of 0.15 mm or less), and at the same time, high-speed stirring is performed. Stir and mix until uniform using a mixer. (2) The contrast repair agent mixed and stirred is sifted through a sieve (sieve 0.15 mm or less),
The lump of the metal fine powder that could not be mixed with the epoxy resin adhesive was removed to complete the contrast repair agent. 6 shows the completed contrast repair agent.
【０００６】開発した造影補修剤をコンクリート構造物
に発生したひび割れに注入する方法は、従来行われてい
るコンクリート用補修剤（エポキシ樹脂系接着剤）の注
入方法と同様の工法によって行う。[0006] The method of injecting the developed contrast repair agent into cracks generated in a concrete structure is performed by the same method as the conventional method of injecting a repair agent for concrete (epoxy resin adhesive).
【０００７】図２は、ひび割れに注入した造影補修剤の
充填状況とひび割れの先端位置を測定するための撮影方
法を示す。７はＸ線発生装置、８はＸ線移動装置及びＸ
線装置台、９はＸ線防護壁、１０はＸ線グリット、１１
はＸ線フィルム、１２はＸ線フィルム・グリット受け、
１３は支持棒、１４は桁、１５は造影補修剤を注入した
ひび割れを示す。Ｘ線装置は、コンクリート構造物の上
部に置き、下方の造影補修剤を注入した箇所へＸ線を照
射し撮影を行う。コンクリート面とＸ線フィルムの間に
は散乱Ｘ線を防止するためＸ線グリットを設置してお
く。また、Ｘ線発生装置を移動しながら、同一箇所を連
続的に撮影することによって、造影補修剤を注入したひ
び割れの先端位置を、Ｘ線フィルムに写し出された画像
の移動距離を測定することによって求めることが出来
る。FIG. 2 shows an imaging method for measuring the filling state of the contrast repair agent injected into the crack and the tip position of the crack. 7 is an X-ray generator, 8 is an X-ray moving device and X
X-ray equipment stand, 9 is X-ray protective wall, 10 is X-ray grit, 11
Is an X-ray film, 12 is an X-ray film grit receiver,
Reference numeral 13 denotes a support rod, 14 denotes a girder, and 15 denotes a crack injected with a contrast repair agent. The X-ray apparatus is placed on the upper part of the concrete structure, and irradiates the lower part where the contrast-improving agent is injected with X-rays to perform imaging. An X-ray grit is installed between the concrete surface and the X-ray film to prevent scattered X-rays. In addition, by moving the X-ray generator while continuously photographing the same location, the tip position of the crack injected with the contrast repair agent can be measured by measuring the moving distance of the image projected on the X-ray film. You can ask.
【０００８】図３は厚さ２０ｃｍのコンクリートに発生
したひび割れに造影補修剤を注入し、Ｘ線撮影にて造影
補修剤注入箇所を撮影した結果を示したものである。１
６はコンクリート部分、１７は鉄筋を示す。造影補修剤
を注入したひび割れをＸ線発生装置を移動しながら複数
枚撮影を行うことによって、Ｘ線フィルム中に写し出さ
れる鉄筋、ひび割れ等は移動する。このＸ線装置の移動
距離に対するひび割れの移動距離を測定することによっ
て、造影補修剤を注入したひび割れの先端位置を測定す
ることが出来る。FIG. 3 shows a result obtained by injecting a contrast repairing agent into a crack generated in a concrete having a thickness of 20 cm and photographing the injected portion of the contrast repairing agent by X-ray photography. 1
6 is a concrete part, 17 is a reinforcing bar. By taking a plurality of images of the crack into which the contrast repair agent has been injected while moving the X-ray generator, rebars, cracks, and the like appearing in the X-ray film move. By measuring the moving distance of the crack with respect to the moving distance of the X-ray apparatus, the tip position of the crack into which the contrast repair agent has been injected can be measured.
【発明の効果】本発明は、以上のように構成されている
ため、以下に示すような効果を奏する。これまで、コン
クリート構造物に発生したひび割れの補修は、補修を行
うだけであったが、本発明の造影補修剤を用いることに
より、補修後に、ひび割れの補修が確実に行われたかを
確認することが出来るため、作業の信頼性を得ることが
出来る。また、補修したひび割れの深さや、形状を測定
することが可能となるため、補修を行ったひび割れの発
生原因を解明するための基礎データを得ることも可能で
あると考えられる。Since the present invention is configured as described above, it has the following effects. Until now, repairs of cracks that occurred in concrete structures were only repairs.However, by using the contrast repair agent of the present invention, it is necessary to confirm whether cracks were repaired reliably after repair. Therefore, the reliability of the work can be obtained. In addition, since it is possible to measure the depth and shape of the repaired crack, it is considered possible to obtain basic data for elucidating the cause of the repaired crack.
【図１】造影補修剤の作製状況を示した平面図である。FIG. 1 is a plan view showing a production state of a contrast repair agent.
【図２】ひび割れに注入した造影補修剤の充填状況とひ
び割れの先端位置を測定するための撮影方法を示した平
面図である。FIG. 2 is a plan view showing a filling state of a contrast repair agent injected into a crack and an imaging method for measuring a tip position of the crack.
【図３】厚さ２０ｃｍのコンクリートに発生したひび割
れに造影補修剤を注入し、Ｘ線撮影にて造影補修剤注入
箇所を撮影した結果を示した平面図である。FIG. 3 is a plan view showing a result obtained by injecting a contrast repair agent into cracks generated in concrete having a thickness of 20 cm and photographing a portion where the contrast repair agent is injected by X-ray imaging.
１ エポキシ樹脂系接着剤 ２ 撹拌用容器 ３ 撹拌ミキサー ４ ふるい ５ 造影効果の高い金属微粉末 ６ 完成した造影補修剤 ７ Ｘ線発生装置 ８ Ｘ線移動装置及びＸ線装置台 ９ Ｘ線防護壁 １０ Ｘ線グリット １１ Ｘ線フィルム １２ Ｘ線フィルム・グリット受け １３ 支持棒 １４ 桁 １５ 造影補修剤を注入したひび割れ １６ コンクリート部分 １７ 鉄筋 DESCRIPTION OF SYMBOLS 1 Epoxy resin adhesive 2 Stirring container 3 Stirring mixer 4 Sieve 5 Metal fine powder with high contrast effect 6 Completed contrast repair agent 7 X-ray generator 8 X-ray moving device and X-ray device stand 9 X-ray protective wall 10 X-ray grit 11 X-ray film 12 X-ray film / grit receiver 13 Support rod 14 Girder 15 Crack injected with contrast repair agent 16 Concrete part 17 Reinforcing bar
フロントページの続き Ｆターム(参考） 2E176 AA01 BB14 BB15 BB16 BB38 2G001 AA01 BA11 CA01 DA02 GA05 HA12 JA01 KA03 KA04 LA06 LA20 RA10 RA20 SA10 SA13 2G052 AA16 FD00 GA19 Continued on front page F term (reference) 2E176 AA01 BB14 BB15 BB16 BB38 2G001 AA01 BA11 CA01 DA02 GA05 HA12 JA01 KA03 KA04 LA06 LA20 RA10 RA20 SA10 SA13 2G052 AA16 FD00 GA19
Claims (2)
粉末を混入したもの（造影補修剤と呼ぶ）をひび割れの
補修剤として使用すること。1. A crack repairing agent obtained by mixing a metal fine powder with a crack repairing agent for concrete (referred to as a contrast repairing agent).
したひび割れに注入しＸ線を用いてひび割れの非破壊検
査を行うこと。2. A method for injecting a contrast repair agent into a crack generated in a concrete structure and performing a nondestructive inspection of the crack using X-rays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000329838A JP2002131248A (en) | 2000-10-30 | 2000-10-30 | Nondesctructive inspection method using crazing-mending agent for concrete with contrasting performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000329838A JP2002131248A (en) | 2000-10-30 | 2000-10-30 | Nondesctructive inspection method using crazing-mending agent for concrete with contrasting performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002131248A true JP2002131248A (en) | 2002-05-09 |
Family
ID=18806451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000329838A Pending JP2002131248A (en) | 2000-10-30 | 2000-10-30 | Nondesctructive inspection method using crazing-mending agent for concrete with contrasting performance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002131248A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010133189A (en) * | 2008-12-08 | 2010-06-17 | Alpha Kogyo Kk | Filler, and method for confirming filling |
| JP2019128288A (en) * | 2018-01-25 | 2019-08-01 | 三井化学株式会社 | Method for observing scratch |
| JP2021096087A (en) * | 2019-12-13 | 2021-06-24 | 株式会社島津製作所 | Contrast agent for nondestructive inspection and nondestructive inspection method |
| CN113960073A (en) * | 2021-10-20 | 2022-01-21 | 武汉诚源宏景制管有限公司 | Monitoring devices with slip casting pipe slip casting is used |
-
2000
- 2000-10-30 JP JP2000329838A patent/JP2002131248A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010133189A (en) * | 2008-12-08 | 2010-06-17 | Alpha Kogyo Kk | Filler, and method for confirming filling |
| JP2019128288A (en) * | 2018-01-25 | 2019-08-01 | 三井化学株式会社 | Method for observing scratch |
| JP2021096087A (en) * | 2019-12-13 | 2021-06-24 | 株式会社島津製作所 | Contrast agent for nondestructive inspection and nondestructive inspection method |
| CN113960073A (en) * | 2021-10-20 | 2022-01-21 | 武汉诚源宏景制管有限公司 | Monitoring devices with slip casting pipe slip casting is used |
| CN113960073B (en) * | 2021-10-20 | 2023-11-28 | 武汉诚源宏景制管有限公司 | Monitoring device with slip casting pipe slip casting is used |
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