JPS60126465A - Repairing of concrete structure - Google Patents
Repairing of concrete structureInfo
- Publication number
- JPS60126465A JPS60126465A JP23415483A JP23415483A JPS60126465A JP S60126465 A JPS60126465 A JP S60126465A JP 23415483 A JP23415483 A JP 23415483A JP 23415483 A JP23415483 A JP 23415483A JP S60126465 A JPS60126465 A JP S60126465A
- Authority
- JP
- Japan
- Prior art keywords
- crack
- pressure
- concrete structure
- vacuum
- injection
- 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.)
- Pending
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はコンクリート構造物の補修工法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for repairing concrete structures.
最近コンクリート構造物の亀裂が大きな問題になってき
ている。亀裂の原因としては骨材によるもの海砂による
ものとがあると云われているが、いずれにしても山砂利
、海砂を使用したコンクリート構造物が大量に作られて
いる。Cracks in concrete structures have recently become a major problem. It is said that cracks are caused by aggregate or sea sand, but in either case, a large number of concrete structures are being constructed using mountain gravel and sea sand.
これらのコンクリート構造物に亀裂が発生することにな
ると大変な補修作業が必要になって（１） ２１Ｑ−
くることが予測される。If cracks occur in these concrete structures, it is predicted that extensive repair work will be required (1) 21Q-.
コンクリート構造物の亀裂（ひび割れ）は、内部を確か
めることができないため亀裂内部へ確実に充填物を充填
することが非常に難かしく、また充填ができたかどうか
の保証はできない問題点がある。Cracks in concrete structures have the problem that it is very difficult to reliably fill the cracks with filler because it is not possible to check the inside of the cracks, and it is not possible to guarantee whether the cracks have been filled.
従来の充填物の注入工法は大きく分けて高圧高速短時間
注入法と低圧低速長時間注入法の２通りであった。Conventional filling injection methods can be broadly divided into two types: high-pressure, high-speed, short-time injection and low-pressure, low-speed, long-time injection.
高圧高速短時間注入法は、亀裂の入口附近の浅い箇所で
充填物が拡散し確実な注入ができないし、また、低圧低
速長時間注入法は熟練が必要であり、長時間のため作業
性が落ちてコスト高になる欠点があった。The high-pressure, high-speed, short-time injection method cannot ensure reliable injection because the filler diffuses in shallow areas near the crack entrance, and the low-pressure, low-speed, and long-term injection method requires skill and is difficult to work with due to the long time. It had the disadvantage of falling and increasing costs.
本発明は、上記の事情に鑑みなされたものであって、そ
の目的とするところは、コンクリート構造物の亀裂内が
所定の負圧になった後に亀裂内に充填物を加圧注入する
ようにして短時間に確実に亀裂の先端部まで充填物を充
填し、従来の充填物の注入法の欠点であった亀裂の入口
−（２）
附近の浅い箇所で充填物が拡散し確実な注入ができない
こと、熟練を必要とし作業性が悪くコスト高になること
を解消することにある。The present invention has been made in view of the above circumstances, and its purpose is to inject a filler under pressure into a crack after the inside of the crack in a concrete structure reaches a predetermined negative pressure. The filler can be reliably filled up to the tip of the crack in a short time, and the filler can be filled at the entrance of the crack, which has been a drawback of conventional filler injection methods. The goal is to eliminate things that cannot be done, that require skill, poor workability, and high costs.
以下、本発明を図面を参照して説明する。Hereinafter, the present invention will be explained with reference to the drawings.
図面中１はコンクリート構造物であり、２はコンクリー
ト構造物１に発生した亀裂を示す。In the drawing, 1 indicates a concrete structure, and 2 indicates a crack that has occurred in the concrete structure 1.
図面中３は真空ポンプであり、真空ポンプ３の吸込側は
真空タンク４の一方の接続口５は管路６を介して接続し
である。真空ポンプ３の他方の接続ロアａは管路７を介
して切換弁８の一方の接続口９に接続してあり、切換弁
８の他方の接続口１０は管路１１を介して充填物Ｂであ
る注入液１２のタンク１３に接続しである。このタンク
１３の上部に圧力導入口３０が設けてあり、この圧力導
入口３０は空気管路３１を介して空気タンク３２の出口
側に接続してあり、この空気管路３１に調圧弁３３およ
び圧力計３６が設けである。図面中３４はコンプレッサ
であり、このコンプレッサ３４の吐出側は配管３５を介
して空気タンク３２０入口側に接続しである。また前記
管路１１にはコック１４が設けである。切換弁８の他方
の接続口Ｉ５は接続管１６の一端が接続してあり、この
接続管１６の他端部には装ナツト１７が設けである。こ
の接続管１６には真空度計１８とコック１９とが設けで
ある。また真空タンク４には真空度計２０が設けである
。In the drawing, numeral 3 denotes a vacuum pump, and the suction side of the vacuum pump 3 is connected to one connection port 5 of a vacuum tank 4 via a conduit 6. The other connecting lower a of the vacuum pump 3 is connected to one connecting port 9 of the switching valve 8 via a pipe 7, and the other connecting port 10 of the switching valve 8 is connected to the filling B via a pipe 11. It is connected to the tank 13 of the injection liquid 12. A pressure introduction port 30 is provided in the upper part of this tank 13, and this pressure introduction port 30 is connected to the outlet side of the air tank 32 via an air pipe line 31. A pressure gauge 36 is provided. 34 in the drawing is a compressor, and the discharge side of this compressor 34 is connected to the inlet side of the air tank 320 via a pipe 35. Further, the conduit 11 is provided with a cock 14. One end of a connecting pipe 16 is connected to the other connecting port I5 of the switching valve 8, and a nut 17 is provided at the other end of the connecting pipe 16. This connecting pipe 16 is provided with a vacuum gauge 18 and a cock 19. Further, the vacuum tank 4 is provided with a vacuum gauge 20.
図面中２１は接手であり、この接手２１の端部には螺子
部２２が形成してあり、また接手２１にはフランジ２３
が形成しである。Reference numeral 21 in the drawing indicates a joint, and a threaded portion 22 is formed at the end of the joint 21, and a flange 23 is formed on the joint 21.
is formed.
図面中２４はシールシートである。24 in the drawing is a seal sheet.
次に、コンクリート構造物の補修工法を説明する。Next, a repair method for concrete structures will be explained.
コンクリート構造物１の亀裂２に■カットして注入口部
２５を形成する。亀裂２にシール部材Ａとしてのシール
シート２４またはシール剤を貼るか塗る。A cut is made in the crack 2 of the concrete structure 1 to form an injection port 25. A seal sheet 24 as a seal member A or a sealant is applied or applied to the crack 2.
シールシート２４は亀裂２に合わせて貼ってもよいし、
面で亀裂２全部を覆ってもよい。The seal sheet 24 may be pasted along the crack 2, or
The entire crack 2 may be covered with a surface.
前記注入口部２５に接手２１を取付けてフランジ２３で
シールシート２４を押え、この部分をシール剤でシール
する。なお接手２１は亀裂２一単位、つまり表面で一個
の亀裂２（亀裂２が接続しているものを−とする）につ
き１箇所以上に接手２１を設けてもよい。A joint 21 is attached to the injection port 25, a flange 23 is used to press the seal sheet 24, and this portion is sealed with a sealant. Note that the joint 21 may be provided at one or more locations for each crack 2, that is, for each crack 2 on the surface (the cracks 2 connected are defined as -).
接手２１の螺子部（２２に接続管Ｉ６の袋ナツト１７を
螺合して接手２１に接続管１６を接続する。The connecting pipe 16 is connected to the joint 21 by screwing the cap nut 17 of the connecting pipe I6 into the screw portion (22) of the joint 21.
このとき切換弁８を真空回路２６を遮断するように断の
位置に切換えておく。At this time, the switching valve 8 is switched to the OFF position so as to cut off the vacuum circuit 26.
次に、真空ポンプ３を駆動し、真空タンク４内の圧力を
下げる。真空度計２０で指定の負圧まで内圧が低下した
ことを読み、コック１９を接続位置にし、切換弁８を切
換えて真空回路２６を開ける。このために亀裂２内の空
気は真空タンク４内に吸引され亀裂２内は負圧になる。Next, the vacuum pump 3 is driven to lower the pressure inside the vacuum tank 4. When the vacuum gauge 20 reads that the internal pressure has decreased to the specified negative pressure, the cock 19 is set to the connection position, the switching valve 8 is switched, and the vacuum circuit 26 is opened. For this reason, the air within the crack 2 is sucked into the vacuum tank 4, and the pressure inside the crack 2 becomes negative.
そして、真空度計１８が指定の負圧を示したらコック１
９を断の位置にする。Then, when the vacuum gauge 18 shows the specified negative pressure, the cock 1
Place 9 in the cut position.
コック１９を断の位置にしてから真空度計１８の指針が
全く動かないかどうかを確認する。もし指針が動くよう
であれば亀裂２のシールに不完全部分があることを意味
しており、この指針が完全に止まるまで亀裂２のシール
を完全にする。After turning the cock 19 to the off position, check whether the pointer of the vacuum gauge 18 does not move at all. If the pointer moves, it means that there is an imperfection in the sealing of crack 2, so complete the sealing of crack 2 until the pointer stops completely.
真空度計１８の指針が完全に動かなくなったらコック１
４を接続位置にし切換弁８を切換えて注入液回路２７を
開ける。When the pointer of vacuum gauge 18 stops moving completely, turn on cock 1.
4 to the connection position, the switching valve 8 is switched, and the injection liquid circuit 27 is opened.
前記空気タンク３２内にはコンプレッサ３４より吐出さ
れた圧縮空気が充満されており、この圧縮空気はあらか
じめ設定された圧力になるよう圧力計３６と調圧弁３３
により調圧されタンクＩ３内に導入されて注入液１２は
加圧された状態にあるため、上記のように注入液回路２
７を開けることにより注入液１２は真空による吸引力と
加圧力により亀裂２内に圧送され充填される。The air tank 32 is filled with compressed air discharged from a compressor 34, and this compressed air is passed through a pressure gauge 36 and a pressure regulating valve 33 to maintain a preset pressure.
Since the injection liquid 12 is in a pressurized state as it is pressure regulated and introduced into the tank I3, the injection liquid circuit 2
By opening 7, the injection liquid 12 is pumped and filled into the crack 2 by the suction force and pressurizing force caused by the vacuum.
亀裂２が複雑な形状をしていても内部が指定の負圧にな
っておれば注入液１２は亀裂２の先端まで充填される。Even if the crack 2 has a complicated shape, the injection liquid 12 will fill up to the tip of the crack 2 if the specified negative pressure is maintained inside.
本発明は以上詳述したように、コンクリート構造物１の
亀裂２内をシール部材Ａによって外気から遮断し、亀裂
２内を真空発生手段によって所定の負圧にした後に、亀
裂２内に加圧力を加えて充填物Ｂを注入するようにした
ことを特徴とするコンクリート構造物の補修工法である
。As described in detail above, the present invention isolates the inside of the crack 2 of the concrete structure 1 from the outside air with the sealing member A, and after creating a predetermined negative pressure inside the crack 2 with the vacuum generating means, pressurizes the inside of the crack 2. This is a method for repairing concrete structures characterized by adding filler B and injecting filler B.
したがって、コンクリート構造物１の亀裂２内が所定の
負圧になった後に亀裂２内に充填物Ｂが加圧力によって
注入されるために、短時間に確実に亀裂２の先端部まで
充填物Ｂを充填することができる。Therefore, since the filler B is injected into the crack 2 by pressure after the inside of the crack 2 of the concrete structure 1 reaches a predetermined negative pressure, the filler B can be reliably delivered to the tip of the crack 2 in a short time. can be filled.
このため、従来の充填物の注入法の欠点であった亀裂の
入口附近の浅い箇所で充填物が拡散し確実な注入ができ
ないこと、熟練を必要とし作業性が悪くコスト高になる
ことが解消できる。This eliminates the disadvantages of conventional filling injection methods, such as the filling spreading in shallow areas near the crack entrance, making it impossible to perform reliable injection, and requiring skill, resulting in poor workability and high costs. can.
第１図はコンクリート構造物の亀裂とシール部材の説明
図、第２図は本発明工法に使用する真空発生充填物注入
装置の構成説明図である。
１はコンクリート構造物、２は亀裂、Ａはシール部材、
Ｂは充填物。
第１図FIG. 1 is an explanatory diagram of cracks in a concrete structure and sealing members, and FIG. 2 is an explanatory diagram of the configuration of a vacuum generating filling injection device used in the construction method of the present invention. 1 is a concrete structure, 2 is a crack, A is a sealing member,
B is the filling. Figure 1
Claims (1)
て外気から遮断し、亀裂２内を真空発生手段によって所
定の負圧にした後に、亀裂２内に加圧力を加えて充填物
Ｂを注入するようにしたことを特徴とするコンクリート
構造物の補修工法。The inside of the crack 2 of the concrete structure I is isolated from the outside air by the sealing member A, and after the inside of the crack 2 is brought to a predetermined negative pressure by the vacuum generating means, the filler B is injected by applying pressure inside the crack 2. A repair method for concrete structures characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23415483A JPS60126465A (en) | 1983-12-14 | 1983-12-14 | Repairing of concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23415483A JPS60126465A (en) | 1983-12-14 | 1983-12-14 | Repairing of concrete structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60126465A true JPS60126465A (en) | 1985-07-05 |
Family
ID=16966491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23415483A Pending JPS60126465A (en) | 1983-12-14 | 1983-12-14 | Repairing of concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60126465A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334250U (en) * | 1986-08-22 | 1988-03-05 | ||
| JPH02186069A (en) * | 1989-01-11 | 1990-07-20 | Fuji Giken Kogyo Kk | Repair for crack on outer structure body |
| JPH02240379A (en) * | 1989-03-14 | 1990-09-25 | Shigeo Shimizu | Repairing of cracks |
| JP2002004318A (en) * | 2000-06-26 | 2002-01-09 | Nippon Kayaku Wasser Kk | Method and device for substrate treatment at leaking part of concrete structure |
| JP2004353284A (en) * | 2003-05-29 | 2004-12-16 | Forestry & Forest Products Research Institute | Method of repairing and reinforcing various materials |
-
1983
- 1983-12-14 JP JP23415483A patent/JPS60126465A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334250U (en) * | 1986-08-22 | 1988-03-05 | ||
| JPH02186069A (en) * | 1989-01-11 | 1990-07-20 | Fuji Giken Kogyo Kk | Repair for crack on outer structure body |
| JPH02240379A (en) * | 1989-03-14 | 1990-09-25 | Shigeo Shimizu | Repairing of cracks |
| JP2002004318A (en) * | 2000-06-26 | 2002-01-09 | Nippon Kayaku Wasser Kk | Method and device for substrate treatment at leaking part of concrete structure |
| JP2004353284A (en) * | 2003-05-29 | 2004-12-16 | Forestry & Forest Products Research Institute | Method of repairing and reinforcing various materials |
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