JPS61102969A - Repairing of concrete structure - Google Patents
Repairing of concrete structureInfo
- Publication number
- JPS61102969A JPS61102969A JP22199484A JP22199484A JPS61102969A JP S61102969 A JPS61102969 A JP S61102969A JP 22199484 A JP22199484 A JP 22199484A JP 22199484 A JP22199484 A JP 22199484A JP S61102969 A JPS61102969 A JP S61102969A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- cracked
- repairing
- floating
- alkyl silicate
- 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
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〕
本発明はコンクリート構造物のひび割れ、浮き部分の補
修方法に関し、さらに詳しくはアルキルシリケート加水
分解物を含浸した後、注入材を充填することによシ付着
性が改善され補修の信頼性を向上さ、せる補修方法に関
する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for repairing cracks and floating parts of concrete structures, and more specifically, the present invention relates to a method for repairing cracks and floating parts of concrete structures, and more specifically, a method for repairing cracks and floating parts of concrete structures, and more specifically, a method for repairing cracks and floating parts of concrete structures. The present invention relates to a repair method that improves adhesion and improves repair reliability.
コンクリート構造物は長期に亘って硬化が進行し、耐久
性に優れているが、ある条件ではひび割れや浮きが発生
し、鉄筋の腐食やモルタルの剥離が生じ、劣化が比較的
早く進行する場合がある。Concrete structures harden over a long period of time and are highly durable; however, under certain conditions, cracks and floating may occur, reinforcing bars may corrode, mortar may peel off, and deterioration may progress relatively quickly. be.
従来コンクリート構造物のひび割れ、浮きを補修する方
法として種々提案されているが、近年ではエポキシ樹脂
、ウレタン樹脂、あるいはゴム系の弾性シーリング材や
ポリマーセメントペーストなどをひび割れ、浮き部分に
注入、充填する方法がとられてきた。しかしながら、こ
れら従来工法では注入材とコンクリートとの付着性が十
分でない場合があり、そのような場合には経時変化によ
って注入材硬化物とコンクリートとの間に剥離が生じる
ことが多く報告されている。Various methods have been proposed to repair cracks and floating areas in concrete structures, but in recent years, epoxy resins, urethane resins, rubber-based elastic sealants, and polymer cement pastes have been injected and filled into cracked and floating areas. methods have been taken. However, with these conventional construction methods, there are cases where the adhesion between the injection material and the concrete is not sufficient, and in such cases, it has been reported that separation occurs between the cured material of the injection material and the concrete due to changes over time. .
そこで本発明者らは従来工法の欠点を排除し、ひび割れ
、浮き部分に充填された注入材硬化体とコンクリートや
モルタルとの付着性が良好で、長期間に亘ってひび割れ
、浮き部分での剥離をなくする工法を求めく鋭意研究し
た結果、本発明を完成するに至りた。Therefore, the inventors of the present invention have eliminated the drawbacks of the conventional method, and have found that the hardened injection material filled in cracked and floating areas has good adhesion to concrete and mortar, and that peeling in cracked and floating areas will not occur over a long period of time. As a result of intensive research to find a construction method that eliminates this problem, we have completed the present invention.
すなわち本発明の要旨はコンクリート構造物のひび割れ
、浮き部分にアルキルシリケート加水分解物を含浸させ
た後、ひび割れ、浮き部分に注入材を注入、充填するこ
とを特徴とするコンクリート構造物の補修方法である０
本発明において下地処理として使用されるアルキルシリ
ケート加水分解物とは、例えばエチルシリケート等から
常法によって得られるアルコールシリカゾル＃があげら
れる。加水分解度は特に限定されないが、おおむね６０
〜８０％のものが好ましい。加水分解度が低過ぎる場合
には、脆弱層の改質効果が小さくなシ、逆に加水分解度
が高過ぎる場合には、アルキルシリケート加水分解物の
安定性が悪くなシ、さらに含浸性も低下する。アルキル
シリケート加水分解物中の５Ｌ０２分に相当する濃度（
以下５ｊ０２濃度′ と云う）は特に限定されな
いが、１０〜２５重量％に調整されたものが好ましい。That is, the gist of the present invention is a method for repairing a concrete structure, which comprises impregnating cracked and floating parts of a concrete structure with an alkyl silicate hydrolyzate, and then injecting and filling the cracked and floating parts with an injection material. The alkyl silicate hydrolyzate used as a base treatment in the present invention includes, for example, alcohol silica sol # obtained from ethyl silicate or the like by a conventional method. The degree of hydrolysis is not particularly limited, but is approximately 60
~80% is preferred. If the degree of hydrolysis is too low, the effect of modifying the brittle layer will be small; on the other hand, if the degree of hydrolysis is too high, the stability of the alkyl silicate hydrolyzate will be poor, and the impregnation property will also be poor. descend. Concentration equivalent to 5L02 min in alkyl silicate hydrolyzate (
Although the concentration (hereinafter referred to as 5j02 concentration') is not particularly limited, it is preferably adjusted to 10 to 25% by weight.
５１０２濃度が高過ぎる場合にはアルキルシリケート加
水分解物の安定性が悪くなり、さらに前記コンクリート
への含浸も低下する。逆に５Ｉ０２濃度が低過ぎる場合
にはコンクリート脆弱層の改質効果が小さくなる。アル
キルシリケート加水分解物中に含まれる溶媒は、アルキ
ルシリケートの加水分解により生成するアルコールおよ
び加水分解処理の際に主として用いられるアルコール類
である。代表的な例としては、エタノール、インプロパ
ツールが挙げられる。If the 5102 concentration is too high, the stability of the alkyl silicate hydrolyzate will deteriorate, and furthermore, the impregnation into the concrete will be reduced. Conversely, if the 5I02 concentration is too low, the effect of modifying the brittle concrete layer becomes small. The solvent contained in the alkyl silicate hydrolyzate is the alcohol produced by hydrolysis of the alkyl silicate and the alcohols mainly used during the hydrolysis treatment. Typical examples include ethanol and Impropatool.
本発明で使用される注入材は従来からコンクリートのひ
び割れ注入用に使用されていたものが使用され、具体例
としては、エポキシ樹脂、ポリウレタン樹脂、シリコー
ン系樹脂、ポリエステル系樹脂、ゴムアスファルト等の
有機材料、セメントペーストあるいは高分子ディスパー
ジョンを混入したポリマーセメントペースト等が挙げら
れる。The injection materials used in the present invention are those conventionally used for filling cracks in concrete. Specific examples include epoxy resins, polyurethane resins, silicone resins, polyester resins, and organic materials such as rubber asphalt. Examples include cement paste, polymer cement paste mixed with a polymer dispersion, and the like.
ひび割れや浮き部分にスプレー噴霧などによシ、このア
ルキルシリケート加水分解物をひび割れの表面に塗布す
るだけでほぼ均一なアルキルシリケート加水分解物の含
浸層が得られる。A substantially uniform alkyl silicate hydrolyzate impregnated layer can be obtained by simply applying the alkyl silicate hydrolyzate to the surface of the cracks or floating areas by spraying or the like.
この後溶媒の揮散によ５．５ｌｏｔを主成分とする固体
が生成し、コンクリートの微細空隙、およびひび割れや
浮きの表面の沈積物（エフロレッセンス、ちシ、油分な
ど）を固化、脆弱層を強化する。After this, a solid mainly composed of 5.5 lots is generated by volatilization of the solvent, solidifying the minute voids in the concrete and deposits on the surface of cracks and floats (efflorescence, dust, oil, etc.), and weakening the brittle layer. Strengthen.
通常、コンクリートのひび割れ部分には、エフロレッセ
ンスなどの沈積物が多イカ、アルキルシリケート加水分
解物は有機質の溶媒を含んでいるので、これら沈積物の
存在するひび割れ中へも容易に浸透し固化する０
かかる処理をした後に注入材をひび割れ、浮き部に注入
、充填すると、コンクリートの脆弱層が残らないので注
入材とコンクリートの付着性が高まる。Usually, there are many deposits such as efflorescence in the cracked parts of concrete.Since alkyl silicate hydrolyzate contains an organic solvent, it easily penetrates into the cracks where these deposits exist and hardens. 0 If the injection material is injected and filled into the cracked and floating parts after such treatment, the adhesion between the injection material and the concrete will be improved because no brittle layer of concrete will remain.
この場合のひび割れ、浮き部分への注入材の注入方法は
従来性われている公知の方法が採用される。In this case, a conventionally known method is used to inject the injection material into the cracked or floating portion.
建設後１０年を経過し、ひび割れの生じたコンクリート
のモルタル壁面へエチルシリケート加水分解物（加水分
解率７０％、５１０２濃度２０％溶媒エタノール）を２
回スプレー噴霧により塗布、含浸させた。スプレー噴霧
後２６後にエポキシ樹脂の注入材を注入した。10 years after construction, ethyl silicate hydrolyzate (hydrolysis rate 70%, 5102 concentration 20% solvent ethanol) was applied to the cracked concrete mortar wall.
It was applied and impregnated by double spraying. The epoxy resin filler was injected 26 days after spraying.
１年後に、上記のひび割れ補修を行った箇所からコア抜
きし、エポキシ樹脂とコンクリートおよびモルタルとの
付着状態を調べたＯその結果本発明の方法による補修箇
所ではコア抜きした１０力所全部コンクリートおよびモ
ルタルと良く付着していた。One year later, cores were extracted from the areas where the cracks had been repaired as described above, and the state of adhesion between the epoxy resin and concrete and mortar was examined. It adhered well to the mortar.
一方アルキルシリケート加水分解物を塗布せず、直接エ
ポキシ樹脂注入を行った箇所ではコア抜きした１０カ所
中２カ所でコンクリート面とエポキシ樹脂との間が付着
していない箇所があった。On the other hand, in the locations where the epoxy resin was directly injected without applying the alkyl silicate hydrolyzate, there were two locations out of ten cored locations where there was no adhesion between the concrete surface and the epoxy resin.
本発明の方法によれば劣化コンクリートとひび割れ注入
材との付着性が著しく改善され、補修の信頼性を著しく
向上せしめるものであり、建設業界での利用価値は大き
い。According to the method of the present invention, the adhesion between deteriorated concrete and the crack injection material is significantly improved, and the reliability of repair is significantly improved, so it has great utility in the construction industry.
Claims (1)
リケート加水分解物を含浸させた後、ひび割れ、浮き部
分に注入材を注入・充填することを特徴とするコンクリ
ート構造物の補修方法。A method for repairing a concrete structure, which comprises impregnating cracked and floating parts of the concrete structure with an alkyl silicate hydrolyzate, and then injecting and filling the cracked and floating parts with an injection material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22199484A JPS61102969A (en) | 1984-10-24 | 1984-10-24 | Repairing of concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22199484A JPS61102969A (en) | 1984-10-24 | 1984-10-24 | Repairing of concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61102969A true JPS61102969A (en) | 1986-05-21 |
| JPH0421032B2 JPH0421032B2 (en) | 1992-04-08 |
Family
ID=16775418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22199484A Granted JPS61102969A (en) | 1984-10-24 | 1984-10-24 | Repairing of concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61102969A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867791A (en) * | 1986-10-16 | 1989-09-19 | Hans Jaklin | Process for subsurface reconstruction of buildings reinforced with constructional steel |
| US6399021B1 (en) * | 1994-10-21 | 2002-06-04 | Elisha Technologies Co Llc | Method of treating concrete structures |
| CN107324691A (en) * | 2017-08-28 | 2017-11-07 | 四川双铁科技有限公司 | A kind of noise barrier stand column bonding epoxy grouting glue and preparation method thereof and construction technology |
-
1984
- 1984-10-24 JP JP22199484A patent/JPS61102969A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867791A (en) * | 1986-10-16 | 1989-09-19 | Hans Jaklin | Process for subsurface reconstruction of buildings reinforced with constructional steel |
| US4869753A (en) * | 1986-10-16 | 1989-09-26 | Hans Jaklin | Method for repairing the near-surface layers of buildings reinforced with constructional steel |
| US6399021B1 (en) * | 1994-10-21 | 2002-06-04 | Elisha Technologies Co Llc | Method of treating concrete structures |
| CN107324691A (en) * | 2017-08-28 | 2017-11-07 | 四川双铁科技有限公司 | A kind of noise barrier stand column bonding epoxy grouting glue and preparation method thereof and construction technology |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0421032B2 (en) | 1992-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |