JPS63293279A - Repairing of reinforced concrete - Google Patents
Repairing of reinforced concreteInfo
- Publication number
- JPS63293279A JPS63293279A JP12657087A JP12657087A JPS63293279A JP S63293279 A JPS63293279 A JP S63293279A JP 12657087 A JP12657087 A JP 12657087A JP 12657087 A JP12657087 A JP 12657087A JP S63293279 A JPS63293279 A JP S63293279A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- rust
- reinforcing
- reinforcing bars
- reinforcing steel
- 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.)
- Granted
Links
- 239000011150 reinforced concrete Substances 0.000 title claims description 6
- 239000004567 concrete Substances 0.000 claims description 50
- 230000003014 reinforcing effect Effects 0.000 claims description 41
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 8
- 230000003449 preventive effect Effects 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- -1 silicate compound Chemical class 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 2
- 229910052912 lithium silicate Inorganic materials 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (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】
(産業上の利用分野)
本発明は、劣化したコンクリート構築物の補修方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for repairing deteriorated concrete structures.
(従来技術とその問題点)
鉄筋コンクリート構造物は、空気中の炭酸ガスや雨水等
によってコンクリートの中性化が進み、また、コンクリ
ートの収縮によるクランクの発生によって水分が躯体内
部に侵入して、鉄筋に錆が発生する。鉄筋が発錆すると
、その体積膨張によって躯体のクラック発生を助長する
。この繰り返しによってコンクリート躯体は徐々に劣化
が促進され、耐久性を著しく損なうことになる。(Prior art and its problems) In reinforced concrete structures, carbon dioxide in the air, rainwater, etc. progress to neutralize the concrete, and water enters the structure due to cranking caused by concrete contraction, causing reinforcing steel Rust occurs on the surface. When reinforcing steel rusts, its volumetric expansion promotes cracks in the building structure. Repeating this process gradually accelerates the deterioration of the concrete structure, significantly reducing its durability.
特公昭57−11988号公報では、このようなコンク
リート躯体にアルカリ性を回復させる技術が開示されて
いる。Japanese Patent Publication No. 57-11988 discloses a technique for restoring alkalinity to such a concrete structure.
この工法は、劣化したコンクリートの表面に水溶性ケイ
酸塩系化合物の溶液を塗布して躯体に含浸させ、脆弱化
したコンクリート層を補強し、中性化部分のアルカリ性
を復元させることによって鉄筋の防錆効果を持たせよう
としたものである。This construction method applies a solution of a water-soluble silicate compound to the surface of deteriorated concrete and impregnates it into the structure, reinforcing the weakened concrete layer and restoring the alkalinity of the neutralized area, thereby reinforcing the reinforcing steel. It was intended to have a rust-preventing effect.
しかしながら、この工法では、コンクリート層の表面側
から水溶性ケイ酸塩系化合物の溶液を塗布するだけであ
るため、躯体の表面側だけにしかアルカリ性の復元効果
を持たせることができず、既に錆の発生している鉄筋を
適性なアルカリ性雰囲気下におくことができなかったり
、鉄筋の片側だけがアルカリ性雰囲気下に置かれて、十
分な補強効果及び防錆効果が得られない不都合がある。However, since this method only applies a solution of water-soluble silicate compounds from the surface side of the concrete layer, the alkaline restoration effect can only be applied to the surface side of the concrete structure, and the rust has already been removed. There are disadvantages in that it is not possible to place reinforcing bars where corrosion has occurred in an appropriate alkaline atmosphere, or only one side of the reinforcing bars is placed in an alkaline atmosphere, making it impossible to obtain sufficient reinforcing and rust-preventing effects.
(技術的課題)
本発明は、劣化したコンクリート構築物の補修方法にお
いて、鉄筋の周囲全体を防錆できるようにすることを課
題としたものである。(Technical Problem) An object of the present invention is to provide a method for repairing deteriorated concrete structures in which the entire surrounding area of reinforcing bars can be rust-proofed.
(技術的手段)
この技術的課題を解決するための技術的手段は、
(イ)劣化した鉄筋コンクリートからなる構築物の鉄筋
露出箇所に注入パイプを固定し、
(ロ)鉄筋とコンクリートとの間に防錆液を注入し、
(ハ)その後表面層を形成すること、
である。(Technical means) The technical means to solve this technical problem are (a) fixing the injection pipe to the exposed part of the reinforcing steel of a structure made of deteriorated reinforced concrete, and (b) preventing the gap between the reinforcing steel and the concrete. Injecting a rust solution, and (c) forming a surface layer afterwards.
(技術的手段の作用)
鉄筋の露出箇所に接着剤等を用いて注入パイプを固定し
、鉄筋と躯体との境界部分をパイプ孔に対面させて注入
パイプから防錆液を注入すると、防錆液は、パイプ孔か
ら鉄筋と躯体の境界に形成された僅かな隙間に侵入して
行くため、発錆した鉄筋の表面を覆いながらその外側の
コンクリートにも含浸されることになる。(Effect of technical means) Rust prevention can be achieved by fixing the injection pipe to the exposed part of the reinforcing steel using adhesive, etc., and injecting the anti-corrosion liquid from the injection pipe with the boundary between the reinforcing steel and the structure facing the pipe hole. The liquid enters the small gap formed at the boundary between the reinforcing bars and the building frame through the pipe holes, so it covers the surface of the rusted reinforcing bars while also impregnating the concrete outside of them.
この注入方法では、鉄筋を中心にして防錆液が躯体及び
錆内に含浸されるため、躯体の表面層を形成して露出し
た鉄筋を埋設状態にすると、鉄筋はその全周が防錆され
ることになる。With this injection method, the rust preventive liquid is impregnated into the structure and rust, centering on the reinforcing bars, so if a surface layer is formed on the structure and the exposed reinforcing bars are buried, the entire circumference of the reinforcing bars will be rust-proofed. That will happen.
(本考案の効果)
鉄筋の周囲全体を防錆できる結果、鉄筋全体を長期間に
わたってアルカリ性雰囲気下に置くことができ、鉄筋全
体の鯖の進行及びそれに起因するコンクリート層の膨張
を阻止できる利点があり、その後のコンクリート層のク
ラックの進行及び剥落等を防止することができる。(Effects of the present invention) As a result of being able to prevent rust around the entire reinforcing bar, the entire reinforcing bar can be placed in an alkaline atmosphere for a long period of time, which has the advantage of preventing the progression of mackereling of the entire reinforcing bar and the expansion of the concrete layer caused by it. This can prevent the subsequent development of cracks and peeling of the concrete layer.
(実施態様)
劣化が極端に進んでいる場合には、躯体表面が剥落して
既に鉄筋が露出しているが、そうでない場合には、躯体
表面を削りとって鉄筋を露出させることになる。(Embodiment) If the deterioration is extremely advanced, the surface of the building frame has peeled off and the reinforcing bars are already exposed, but if not, the surface of the building frame is scraped off to expose the reinforcing bars.
防錆剤としては、亜硝酸、スルホン酸、リン酸等の無機
酸とアルカリ金属又はアルカリ土金属とを化合させた無
機化合物塩類やアミン類有機酸塩類を使用する他、水酸
化ナトリウム、水酸化カルシウム、ケイ酸ソーダ、リチ
ュームシリケート等の鉄筋に不動体酸化被蒔(を形成す
る助剤となるアルカリ水溶液を使用する。As rust preventive agents, inorganic compound salts made by combining inorganic acids such as nitrous acid, sulfonic acid, and phosphoric acid with alkali metals or alkaline earth metals and organic acid salts of amines are used, as well as sodium hydroxide, hydroxide, etc. An alkaline aqueous solution is used as an auxiliary agent to form a passive oxidation coating on reinforcing bars made of calcium, sodium silicate, lithium silicate, etc.
また、注入後の表面層の形成は、躯体の剥落部や削り部
をセメントペースト、レジンコンクリート、樹脂等を使
用して被覆しておけば良い。Further, the surface layer may be formed after the injection by covering the peeled-off or scraped parts of the structure using cement paste, resin concrete, resin, or the like.
また、躯体の剥落部や削り部に被覆層を形成するだけで
はなく、躯体の表面全体に保護層を形成したり、或いは
、コンクリート躯体にクラック等が発生している場合に
は、クラック内に接着剤等を注入して雨水を阻止するこ
とによって、コンクリート躯体のアルカリ性雰囲気を長
期間維持することができるのは言うまでもない。In addition, in addition to forming a coating layer on the peeling or scraped parts of the concrete structure, we also form a protective layer on the entire surface of the structure, or if cracks have occurred in the concrete structure, we will coat the inside of the cracks. It goes without saying that the alkaline atmosphere in the concrete structure can be maintained for a long period of time by injecting an adhesive or the like to prevent rainwater from entering.
特許出願人 コ ニ シ 株式会社
本発明は、劣化したコンクリート構築物の補修方法に関
するものである。Patent Applicant: Ko Nishi Co., Ltd. The present invention relates to a method for repairing deteriorated concrete structures.
(従来技術とその問題点)
鉄筋コンクリート構造物は、空気中の炭酸ガスや雨水等
によってコンクリートの中性化が進み、また、コンクリ
ートの収縮によるクランクの発生によって水分が躯体内
部に侵入して、鉄筋に錆が発生する。鉄筋が発錆すると
、その体積膨張によって躯体のクランク発生を助長する
。この繰り返しによってコンクリ−11体は徐々に劣化
が促進され、耐久性を著しく損なうことになる。(Prior art and its problems) In reinforced concrete structures, carbon dioxide in the air, rainwater, etc. progress to neutralize the concrete, and water enters the structure due to cranking caused by concrete contraction, causing reinforcing steel Rust occurs on the surface. When reinforcing steel rusts, its volumetric expansion promotes cranking of the building frame. By repeating this process, deterioration of the concrete 11 body is gradually accelerated, and its durability is significantly impaired.
特公昭57−11988号公報では、このようなコンク
リート躯体にアルカリ性を回復させる技術が開示されて
いる。Japanese Patent Publication No. 57-11988 discloses a technique for restoring alkalinity to such a concrete structure.
この工法は、劣化したコンクリートの表面に水溶性ケイ
酸塩系化合物の溶液を塗布して躯体に含浸させ、脆弱化
したコンクリート層を補強し、中性化部分のアルカリ性
を復元させることによって鉄筋の防錆効果を持たせよう
としたちのである。This construction method applies a solution of a water-soluble silicate compound to the surface of deteriorated concrete and impregnates it into the structure, reinforcing the weakened concrete layer and restoring the alkalinity of the neutralized area, thereby reinforcing the reinforcing steel. The idea was to give it an anti-rust effect.
しかしながら、この工法では、コンクリート層の表面側
から水溶性ケイ酸塩系化合物の溶液を塗布するだけであ
るため、躯体の表面側だけにしかアルカリ性の復元効果
を持たせることができず、既に錆の発生している鉄筋を
適性なアルカリ性雰囲気下におくことができなかったり
、鉄筋の片側だけがアルカリ性雰囲気下に置かれて、十
分な補強効果及び防錆効果が得られない不都合がある。However, since this method only applies a solution of water-soluble silicate compounds from the surface side of the concrete layer, the alkaline restoration effect can only be applied to the surface side of the concrete structure, and the rust has already been removed. There are disadvantages in that it is not possible to place reinforcing bars where corrosion has occurred in an appropriate alkaline atmosphere, or only one side of the reinforcing bars is placed in an alkaline atmosphere, making it impossible to obtain sufficient reinforcing and rust-preventing effects.
(技術的課題)
本発明は、劣化したコンクリート構築物の補修方法にお
いて、鉄筋の周囲全体を防錆できるようにすることを課
題としたものである。(Technical Problem) An object of the present invention is to provide a method for repairing deteriorated concrete structures in which the entire surrounding area of reinforcing bars can be rust-proofed.
(技術的手段)
この技術的°課題を解決するための技術的手段は、
(イ)劣化した鉄筋コンクリートからなる構築物の鉄筋
露出箇所に注入パイプを固定し、
(ロ)鉄筋とコンクリートとの間に防錆液を注入し、
(ハ)躯体の表面層を整形すること、
である。(Technical means) The technical means to solve this technical problem are: (a) Fixing the injection pipe to the exposed part of the reinforcing steel of a structure made of deteriorated reinforced concrete; (b) Between the reinforcing steel and the concrete. Injecting anti-corrosion liquid and (c) shaping the surface layer of the structure.
(技術的手段の作用)
鉄筋の露出箇所に接着剤等を用いて注入パイプを固定し
、鉄筋と躯体との境界部分をパイプ孔に対面させて注入
パイプから防錆液を注入すると、防錆液は、パイプ孔か
ら鉄筋と躯体の境界に形成された僅かな隙間に侵入して
行くため、発錆した鉄筋の表面を覆いながらその外側の
コンクリートにも含浸されることになる。(Effect of technical means) Rust prevention can be achieved by fixing the injection pipe to the exposed part of the reinforcing steel using adhesive, etc., and injecting the anti-corrosion liquid from the injection pipe with the boundary between the reinforcing steel and the structure facing the pipe hole. The liquid enters the small gap formed at the boundary between the reinforcing bars and the building frame through the pipe holes, so it covers the surface of the rusted reinforcing bars while also impregnating the concrete outside of them.
この注入方法では、鉄筋を中心にして防錆液が躯体及び
端内に含浸されるため、躯体の表面層を整形して露出し
た鉄筋を外気と遮断して埋設状態にすると、鉄筋はその
全周が防錆液で覆われることになる。With this injection method, the rust preventive liquid is impregnated into the structure and edges, centering on the reinforcing bars, so if the surface layer of the structure is shaped and the exposed reinforcing bars are sealed off from the outside air and buried, all of the reinforcing bars will be removed. The surrounding area will be covered with anti-corrosion liquid.
(本考案の効果)
鉄筋の周囲全体を防錆できる結果、鉄筋全体を長期間に
わたって防錆状態に置くことができ、鉄筋全体の錆の進
行及びそれに起因するコンクリート層の膨張を阻止でき
る利点があり、その後のコンクリート層のクラックの進
行及び剥落等を防止することができる。(Effects of the present invention) As a result of being able to prevent rust around the entire reinforcing bar, the entire reinforcing bar can be kept in a rust-proof state for a long period of time, which has the advantage of preventing the progression of rust on the entire reinforcing bar and the expansion of the concrete layer caused by it. This can prevent the subsequent development of cracks and peeling of the concrete layer.
(実施態様)
劣化が極端に進んでいる場合には、躯体表面が剥落して
既に鉄筋が露出していることもあるが、そうでない場合
には、躯体表面を削りとったり、孔を穿設して鉄筋を露
出させることになる。(Embodiment) If the deterioration has progressed to an extreme level, the surface of the building structure may have fallen off and the reinforcing bars may already be exposed, but if this is not the case, the surface of the building structure may be scraped off or holes may be drilled. This will expose the reinforcing steel.
防錆剤としては、亜硝酸、スルホン酸、リン酸等の無機
酸とアルカリ金属又はアルカリ土金属とを化合させた無
機化合物塩類やアミン類有機酸塩類を使用する他、水酸
化ナトリウム、水酸化カルシウム、ケイ酸ソーダ、リチ
ュームシリケート等の鉄筋に不動体酸化被膜を形成する
助剤となるアルカリ水溶液を使用する。As rust preventive agents, inorganic compound salts made by combining inorganic acids such as nitrous acid, sulfonic acid, and phosphoric acid with alkali metals or alkaline earth metals and organic acid salts of amines are used, as well as sodium hydroxide, hydroxide, etc. An alkaline aqueous solution of calcium, sodium silicate, lithium silicate, etc. is used as an auxiliary agent to form a passive oxide film on the reinforcing steel.
また、注入後の躯体の表面層の整形は、躯体の剥落部や
削り部をセメントペースト・レジンコンクリート、樹脂
等を打設、塗布あるいは注入することによって被覆層を
形成したり、躯体の表面全体に保護層を形成することに
よって行うが、コンクリートm体にクラック等が発生し
ている場合には、クラック内に接着剤等を注入して雨水
の侵入を阻止し、コンクリートS体内における防錆効果
を長期間維持させるようにするのが望ましい。In addition, to shape the surface layer of the structure after injection, we can form a coating layer by pouring, coating, or injecting cement paste, resin concrete, resin, etc. on the peeling or scraped parts of the structure, or we can reshape the entire surface of the structure. This is done by forming a protective layer on the concrete body, but if cracks, etc. have occurred in the concrete body, adhesives etc. are injected into the cracks to prevent rainwater from entering and prevent rust in the concrete body. It is desirable to maintain this for a long period of time.
(実 施 例)
次に、上記技術的手段の具体例を図面を参酌して説明す
る。(Example) Next, a specific example of the above technical means will be explained with reference to the drawings.
第1図はコンクリート壁(1)を研って鉄筋(2)を露
出させて補修する場合の断面を示したものである。Figure 1 shows a cross-section of a concrete wall (1) that is to be repaired by polishing it to expose the reinforcing bars (2).
折り取ったコンクリート部(1)を清掃し、鉄筋(2)
の錆を除去した後((a)参照)、パイプ(3)の先端
を鉄筋(2)に当接させた状態でシール(4)を施す(
(b)参照)。Clean the broken concrete part (1) and attach the reinforcing bars (2)
After removing the rust (see (a)), apply a seal (4) with the tip of the pipe (3) in contact with the reinforcing bar (2) (
(see (b)).
シール(4)が硬化した段階で、パイプ(3)の後端部
から水溶性ケイ酸塩系化合物の溶液を注入すると、この
溶液はコンクリート(1)と鉄筋(2)との間に進入す
る。When the seal (4) has hardened, a solution of a water-soluble silicate compound is injected from the rear end of the pipe (3), and this solution enters between the concrete (1) and the reinforcing steel (2). .
次いで、パイプ(3)を閉塞して水溶性ケイ酸塩系化合
物の溶液を錆及びコンクリート内に十分含浸させ、その
後シール(4)及びパイプ(3)を除去し、折り取った
部分にレジンコンクリート(5)を打設して補修作業が
完了する。Next, the pipe (3) is closed to fully impregnate the rust and concrete with a solution of a water-soluble silicate compound, and then the seal (4) and pipe (3) are removed, and the broken part is filled with resin concrete. (5) and the repair work is completed.
第2図はコンクリート壁(11)にクランク(15)が
発生している場合の補修方法を示す正面図を示したもの
である。FIG. 2 is a front view showing a repair method when a crank (15) occurs in a concrete wall (11).
クランク(15)に沿ってシール(14)を施すと共に
、鉄筋(12)の正面側にあるコンクリート壁に鉄筋(
12)に突き当たる孔(16)−実線で孔を表示−を穿
設する。A seal (14) is applied along the crank (15), and the reinforcing bar (12) is attached to the concrete wall in front of the reinforcing bar (12).
12) A hole (16) - the hole is indicated by a solid line - is drilled.
この孔(16)内を清掃したあと、孔(16)の開口部
に注入パイプ(図示せず)を固着して水酸化ナトリウム
水溶液を注入して鉄筋(12)の周囲及びクランク(1
5)内に進入せしめ、注入パイプを閉塞し、水酸化ナト
リウム水溶液を錆及びコンクリート内に十分含浸させる
。After cleaning the inside of this hole (16), an injection pipe (not shown) is fixed to the opening of the hole (16) and an aqueous sodium hydroxide solution is injected around the reinforcing bar (12) and around the crank (1).
5) Entry into the interior, close the injection pipe, and thoroughly impregnate the rust and concrete with the sodium hydroxide aqueous solution.
次いで、クランク(15)に沿って適宜の間隔を開けて
さらに孔(17)一点線で孔を表示−を穿設し、孔(1
6)と同様に注入パイプを固着し、注入パイプを利用し
て孔(16) (17)からクラック(15)内に順次
接着剤を注入してコンクリート(11)の表面層を補強
整形する。Next, further holes (17) are drilled along the crank (15) at appropriate intervals, and the holes (17) are indicated by dotted lines.
Fix the injection pipe in the same manner as in step 6), and use the injection pipe to sequentially inject adhesive into the crack (15) through the holes (16) and (17) to reinforce and shape the surface layer of the concrete (11).
この実施例では、接着剤注入用の孔(17)を防錆液の
注入後に穿設しているが、防錆液注入用の孔(16)の
穿設と同時にしておき、防錆液注入中にはキャップ等で
適宜閉塞するようにしても良い。In this embodiment, the hole (17) for injecting the adhesive is drilled after the injection of the rust preventive liquid, but the hole (16) for injecting the rust preventive liquid is drilled at the same time. During injection, it may be appropriately closed with a cap or the like.
図面は、技術的手段の具体例を説明するためのもので、
第1図は補修箇所におけるコンクリート壁の断面図、第
2図は他の実施例におけるコンクリート壁の正面図であ
る。
(1) (11)コンクリート壁、(2) (12)鉄
筋、(4) (14)シール、(15)クランク、(1
6) (17)孔、第1図The drawings are for explaining specific examples of technical means.
FIG. 1 is a sectional view of a concrete wall at a repaired location, and FIG. 2 is a front view of a concrete wall in another embodiment. (1) (11) Concrete wall, (2) (12) Rebar, (4) (14) Seal, (15) Crank, (1
6) (17) Hole, Figure 1
Claims (2)
露出箇所に注入パイプを固定し、鉄筋とコンクリートと
の間に防錆液を注入し、その後表面層を形成する補修方
法。(1) A repair method in which an injection pipe is fixed to the exposed location of the reinforcing bars in a structure made of deteriorated reinforced concrete, a rust preventive liquid is injected between the reinforcing bars and the concrete, and then a surface layer is formed.
特許請求の範囲第1項に記載の補修方法。(2) The repair method according to claim 1, wherein the reinforcing bars are exposed by cutting the concrete frame.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62126570A JPH0652010B2 (en) | 1987-05-22 | 1987-05-22 | Repair method for reinforced concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62126570A JPH0652010B2 (en) | 1987-05-22 | 1987-05-22 | Repair method for reinforced concrete |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63293279A true JPS63293279A (en) | 1988-11-30 |
JPH0652010B2 JPH0652010B2 (en) | 1994-07-06 |
Family
ID=14938434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62126570A Expired - Fee Related JPH0652010B2 (en) | 1987-05-22 | 1987-05-22 | Repair method for reinforced concrete |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0652010B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05214818A (en) * | 1992-02-07 | 1993-08-24 | Railway Technical Res Inst | Repairing method for cured concrete |
KR100259574B1 (en) * | 1997-08-12 | 2000-06-15 | 김헌출 | Method for repairing crack of concrete constructions |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63217068A (en) * | 1987-03-05 | 1988-09-09 | 三菱油化株式会社 | Construction method for repairing reinforced concrete |
-
1987
- 1987-05-22 JP JP62126570A patent/JPH0652010B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63217068A (en) * | 1987-03-05 | 1988-09-09 | 三菱油化株式会社 | Construction method for repairing reinforced concrete |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05214818A (en) * | 1992-02-07 | 1993-08-24 | Railway Technical Res Inst | Repairing method for cured concrete |
KR100259574B1 (en) * | 1997-08-12 | 2000-06-15 | 김헌출 | Method for repairing crack of concrete constructions |
Also Published As
Publication number | Publication date |
---|---|
JPH0652010B2 (en) | 1994-07-06 |
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