JPS61191706A - Repairing of reinforced concrete - Google Patents
Repairing of reinforced concreteInfo
- Publication number
- JPS61191706A JPS61191706A JP3315785A JP3315785A JPS61191706A JP S61191706 A JPS61191706 A JP S61191706A JP 3315785 A JP3315785 A JP 3315785A JP 3315785 A JP3315785 A JP 3315785A JP S61191706 A JPS61191706 A JP S61191706A
- Authority
- JP
- Japan
- Prior art keywords
- reinforced concrete
- concrete
- agent
- water
- rubber
- 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１ｌ−１ｌ：尚遠道路用の架橋や鉄迫の架橋等、
鉄筋コンクリート製構築物の劣下部分を補１しする工法
に関する。Detailed Description of the Invention (Industrial Field of Application) Invention 1l-1l: Bridges for Shōen roads, bridges for Tetsusako, etc.
This article relates to a construction method for compensating for degraded parts of reinforced concrete structures.
（背景説明）
セメントコンクＩＩ−トば元来高アルカリ性分をもって
督り、該アルカリ性分が内部鉄筋の酸化を防いでいるが
、外部からの炭酸ガスの侵透によってアルカリ性分が中
性化して行くと、鉄筋ａ当然酸化しやすくなる。また、
近年、川砂の不足により海砂がセメントに混合されてい
るが、このような塩害によっても鉄筋ぼ発錆しやすくな
り、鉄筋が発錆すると、錆の膨張によってコンクＩ＋
−トに＃＆裂が生じる。ざらに、地盤沈下や地這などの
影響によってもコンクリートにｉａｔ亀裂が生じ、コン
クリートの材質劣下も伴って、前記亀裂部分θＳ欠損し
たり剥離したりする現家を起す。＃Ｃ筋コンクリート製
ｊ４ＩｔＳ物の破損の原因がこれほどばつきりと解明さ
れていても、鉄筋の発錆及びコンク１１−ト材這の劣下
を根本的に抑える最良の手段が見出せないのが現状であ
るから、それを袖珍という型で防ぐことになる。(Background explanation) Cement concrete II - Toba originally has a high alkaline content, and this alkaline content prevents the internal reinforcing bars from oxidizing, but the alkaline content becomes neutral due to the penetration of carbon dioxide gas from the outside. Naturally, reinforcing steel a becomes more susceptible to oxidation. Also,
In recent years, due to the shortage of river sand, sea sand has been mixed into cement, but such salt damage also makes reinforcing steel more likely to rust, and when the reinforcing steel rusts, the rust expands and causes concrete
- #& cracks occur on the edges. Furthermore, iat cracks occur in concrete due to the effects of ground subsidence and ground creeping, and along with the deterioration of the material quality of the concrete, the cracked portion θS of the existing house is damaged or peels off. #C Even though the causes of damage to reinforced concrete J4ItS objects have been clearly clarified, the best means to fundamentally prevent rusting of reinforcing bars and deterioration of concrete materials cannot be found. Since this is the current situation, we can prevent this by using the sleeve pattern.
（従来の技術）
−ｍに鉄筋コンクリートの補修にＶエポキシ樹脂系ボク
ウレタン樹脂、ビニルエステル樹脂などの塗料を用いて
いる。例えば部分的な欠損個所にぼエポキシ樹脂パテが
詰められ、その上に何層かの塗料が上塗りされる。また
剥離を未然に防止する個所にかいても、先づ下室りがさ
れ、その上に何１−かの上皇りが施される。このように
、重量の大きいセメントコンクリート°の脱落を防ぐた
めにリエ、塗料そのものに強靭性をもたさなければなら
ないから、それぞれ特有の性質を備えた塗料が側層にも
施されるのである。最近では、高速道路や鉄道用の架橋
外面の補修用としてａ、主に樹脂糸塗料が、それも−ド
塗り及び中塗り用としてａ、高強度で硬化時の収縮瞳が
少なく比較的安価なエポキシ系のものが用いられ、耐久
性や耐候性に優れるポリウレタン樹脂塗料が上塗りに用
いられている。しかし、例えば、最近の地表における炭
酸ガス濃度の増加や、酸性雨の影響などもあって、前記
のエポキシ系やポリウレタン樹脂系の上塗り塗料（中塗
りを含め）では、耐候性、コンクリートとの付着性、ひ
び割れ追従性等に充分でなく、塗替え周期か短かい等の
欠点があった。(Prior art) Paints such as V-epoxy resin-based urethane resin and vinyl ester resin are used to repair reinforced concrete. For example, a partially defective area is filled with epoxy resin putty, and then several layers of paint are applied over it. Also, even in areas where peeling is to be prevented, a lower layer is first applied, and then some type of layer is applied on top of that. In this way, in order to prevent the heavy cement concrete from falling off, the paint itself must be strong, so paints with unique properties are applied to the side layers as well. Recently, resin thread paints have been used mainly for repairing the external surfaces of highways and railway bridges, and also for docoating and intermediate coatings. An epoxy-based material is used, and a polyurethane resin paint with excellent durability and weather resistance is used for the top coat. However, due to the recent increase in carbon dioxide concentration on the ground surface and the effects of acid rain, for example, the above-mentioned epoxy and polyurethane resin top coats (including intermediate coats) have poor weather resistance and adhesion to concrete. It had drawbacks such as insufficient properties such as durability and crack followability, and the repainting cycle was short.
（発明が解決しようとする問題点）
本発明は上記の点に鑑み新しい中肇剤と上塗剤との組合
せによって耐候性、コンクリート付着性、ひび割れ追従
性を向上させることを目的とするものである。(Problems to be Solved by the Invention) In view of the above points, the present invention aims to improve weather resistance, concrete adhesion, and crack followability by combining a new intermediate coating agent and top coating agent. .
（問題を解決するための手段）
上記の目的を達−Ｘさせるために、エポキシ樹脂系の上
塗剤の上にゴム系の中菫剤、接着付与剤、液状シリコン
ゴム系の上塗剤を順次塗布するようにしたものである。(Means for solving the problem) In order to achieve the above objective - It was designed to do so.
しかして本発明ぼ、ゴム系中ｆ剤の緩衝性と、シリコン
ゴム系上塗剤の耐水性、熟女定性、発水性とが相まって
耐候性、コンク１１−ト付着性、ひび割れ追従性が向上
するのである。However, in the present invention, the buffering properties of the rubber-based medium agent and the water resistance, maturation properties, and water repellency of the silicone rubber-based top coat combine to improve weather resistance, concrete adhesion, and crack followability. be.
（実施例）
オ１図において（Ａ）ぼ鉄筋コンクリート製ＭＲ造物で
あり、高速通路の架橋の一部のｌｔｈ向を示し、その外
側１１ｏを塗料ＩＢＩでもって補１ビしており、第２°
図ｑ工補１多個所の断Ｉ―を表したもので、（１１は下
塗剤、（２）ａ中ｒ剤、（３１ば接着付与剤、＋４＋ｒ
ｃＪ：塗料である。(Example) In Fig. 1, (A) is an MR structure made of reinforced concrete, showing the lth direction of a part of the bridge of the expressway, and its outer side 11o has been supplemented with paint IBI, and the second
Figure q Supplement 1 shows multiple cuts I-, (11 is primer, (2) agent in a, (31 is adhesive,
cJ: Paint.
そして、これら各塗料ａ例えば下記の如き材料によって
構成している。Each of these paints a is made of, for example, the following materials.
“下壁刑 イ） エポキシ樹脂 （主 剤） 口） ポリアミド （硬化剤） ハ） メチルケント （硬化剤、溶剤）“中塗剤９ イ） エポキシ樹脂 （主 剤） 口） ボ１ｊアミ ド （硬化剤） ハ） ポリサルファント（硬化剤） ″接着付与剤。“Shimakabe punishment b) Epoxy resin (base agent) Mouth) Polyamide (hardening agent) C) Methyl Kent (hardening agent, solvent) “Intermediate coating agent 9 b) Epoxy resin (base agent) Mouth) Bo1j Amido (hardening agent) c) Polysulfant (curing agent) ``Adhesive agent.
イ） シ１１コン樹脂
口） ゴム・揮発油
″上塗剤７゜
イ） 液状シリコンゴム
ロ） ガラスフレーク（強化剤）
なお、上塗剤ば里に−ｊ曽でほなく何１−かにｆらレル
。各層のシリコン糸塗料にほそれぞれ異なる材料が混合
されるが、ガラスフレークばそのうちの一部に混合され
る。液状シリコーンゴムハ元々、キシレン等の溶剤又ａ
、水が蒸発すると連続した柔軟で、耐水性、熱安定性、
発水性のあるプラスチック被膜となるが、かがるプラス
チック被膜は炭酸ガスが透過するので、予じめガラスフ
レーク（鱗片状ガラス扮末）を混合すると、ガス透過性
がなくなると共に、シリコーン樹脂の柔軟性とガラスの
剛性とが相乗するｇｉａ性を発揮する。B) Rubber/volatile oil topcoat 7B) Liquid silicone rubber) Glass flakes (strengthening agent) In addition, in the topcoat area, there are Different materials are mixed into each layer of silicone thread paint, and glass flakes are mixed into some of them.Liquid silicone rubber originally contains solvents such as xylene or a
, flexible, water resistant, heat stable, continuous when water evaporates
The plastic film is water-repellent, but carbon dioxide permeates through the plastic film, so mixing glass flakes (scaly glass powder) in advance eliminates gas permeability and increases the flexibility of the silicone resin. It exhibits geability, which is a synergistic combination of strength and the rigidity of glass.
シリコーンゴムに対するガラスフレークの混合比率を５
％〜２０％とにして実験した結果、シリコーンゴムの弾
力性力ｉ揖われず、それで強靭で、また塗装時の伸びも
失わねず作業性が良く、炭酸ガスの透過量ばガラスフレ
ークを全熱混合していないシリコーン樹脂被膜の１５分
の１に減少しｔｏまた硬度リエ１０（７幅、接着強度リ
エ８０％つつそれぞれ増大した。そして上塗り材料とし
てコンクリートや鉄筋に有害なガスや水分の浸透を阻止
すると共に、高い耐薬品性を発揮して長期間の白亜化を
防ぐ耐候性を示し、さらに、コンクリートとの付着性及
び割れ追従性に優れた弾力性を現した。The mixing ratio of glass flakes to silicone rubber is 5.
% to 20%, the results showed that the elasticity of silicone rubber was not affected, it was strong, it did not lose its elongation during painting, it was easy to work with, and the amount of carbon dioxide permeated completely removed glass flakes. The hardness was reduced to one-fifteenth of that of the non-heat-mixed silicone resin coating, and the hardness increased by 10% (7%) and the bond strength increased by 80%.And as a topcoat material, it prevents the penetration of harmful gases and moisture into concrete and reinforcing steel. In addition to exhibiting high chemical resistance and weather resistance that prevents chalking over a long period of time, it also exhibits excellent adhesion to concrete and elasticity with excellent crack followability.
因みに、耐熱性に関しては、一般の有機ゴムは７０〜８
０℃以上になると軟化、分解して、変色ひび割れを起す
が、連続１００００時間以上の使用に耐えた。一般の有
機ゴムの中で最も耐オゾン性の優れるグロロプレンやブ
チルゴムが１υ分前後で劣下するような場合でも、２０
ＵＯ時間以上耐え、長Ｖｊｌｆ５．ｎ外線や雨や氷に曝
されてもクラ’７−１−ングを生じなかった。By the way, in terms of heat resistance, general organic rubber has a heat resistance of 70 to 8.
When the temperature exceeds 0°C, it softens and decomposes, causing discoloration and cracking, but it withstood continuous use for more than 10,000 hours. Even in cases where gloloprene and butyl rubber, which have the best ozone resistance among general organic rubbers, deteriorate after around 1 υ minutes, 20
Withstands more than UO time, long Vjlf5. No cracking occurred even when exposed to external radiation, rain, or ice.
一万、一般の樹脂糸雀科ａ全部の・吋格が炭素でできた
有機化合吻であったため耐熱性の悪い欠点があったが、
シ１１コーン樹脂Ｊよケイ素を骨格としているｔめ熱に
対する安定性も大きく、それに有機溶液や水にも不溶で
、その上に犀カ性、発水性がある。また耐水性、耐スチ
ーム性でａ％優れた発水性のため、物・注ば浸水後でも
？１とんど変化しない。ただ過熱水Ｖエゴム分を変化さ
せるが、これも連続的な浸漬のときだはで、ノＪＯ圧さ
れた場合を除き水蒸気によってＶ工はとんど影響を受け
ない。10,000, all of the general resin sparrows had an organic compound proboscis made of carbon, so they had the disadvantage of poor heat resistance.
Because silicone resin J has silicon as its backbone, it has great stability against heat, is insoluble in organic solutions and water, and has mildew properties and water-repellent properties. In addition, it has excellent water and steam resistance, and has excellent water repellency, so it can be used even after objects or items are submerged in water. 1 It doesn't change at all. However, the content of the superheated water vapor changes, but this is also a problem when immersed continuously, and the water vapor is hardly affected by water vapor unless it is under pressure.
通常の吸水晰は１％程度で機械的強度や電気的影響ばほ
とんどない。耐薬品性、耐油性では、甫酸、布Ｔ ／Ｌ
’ カリ、アルコール、アセトン、ニトロベンゼン、ア
ニリンなどにａは七んど侵されず、１υ％〜１５％の容
積増加にとどまる。またベンゼン、トルエン、ガソリン
、四塩化炭素などによっである程度を工膨潤するが、一
般の有機ゴムと異なり、材頁の分解や溶解がなく、溶剤
を除くと元の状態に戻る。一般の有様コムのうち、特に
耐油性の艮いクロロプレンゴムやニトリルゴムに比べる
と、耐油性に若干万るが、その池の有機ゴムに比べて耐
油性ぼ優れている。Normal water absorption is about 1%, and there is almost no mechanical strength or electrical influence. For chemical resistance and oil resistance, phosphoric acid, cloth T/L
'A is not affected by potash, alcohol, acetone, nitrobenzene, aniline, etc., and its volume increases by only 1υ% to 15%. It also swells to some extent with benzene, toluene, gasoline, carbon tetrachloride, etc., but unlike general organic rubber, the material does not decompose or dissolve, and returns to its original state when the solvent is removed. Although it is slightly less oil resistant than chloroprene rubber and nitrile rubber, which are particularly oil resistant among general rubbers, it is superior in oil resistance compared to other organic rubbers.
（効果）
本発明はゴム系・Ｄ中塗剤を使用すると非番こ、液状シ
リコンゴム系・ｌ）上室剤で仕上げ塗装するようにした
もので、中塗剤の緩衝性及び上塗剤の柔軟１生が相まっ
て振動に強く、従ってコンクリートのひび割れ追従性及
び吐着性が向上するし、ざらにシＩｌコン樹脂の耐水性
、熱安定性、発水性ｌこよって耐候性が同上し、従来の
補修に比べて塗替え周期を半水人的に呆償する効果かあ
る。(Effects) The present invention is designed so that when a rubber-based intermediate coating agent is used, it can be used for off-duty purposes, and a finishing coat is applied using a liquid silicone rubber-based intermediate coating agent.The buffering properties of the intermediate coating agent and the flexibility of the top coating agent Combined with this, it is resistant to vibration, which improves the crack followability and spouting properties of concrete, and the water resistance, thermal stability, and water repellency of silicone resin, which improves weather resistance as well, making conventional repair easier. Compared to , it has the effect of compensating for the repainting cycle in a half-human way.
第１図は本兄明の実施例を示す鉄筋コンクリート裂架橋
の断面図、第２図ａ前図の部分旧な拡大断面図である。
頭・・・・・・・・・・・・鉄筋コンクリート製構築物
。
ｔＢｌ・・・・・・・・・・・・室料。
（１）・・・・・・・・・・下塗剤。
（２）・・・・・・・・・・中壁剤。
（３）・・・・・・・・・・・接着付与剤。
（４１・・・・・・・・・・・上を剤。FIG. 1 is a sectional view of a reinforced concrete crack bridge showing an embodiment of the present invention, and FIG. Head: A reinforced concrete structure. tBl・・・・・・・・・Room charge. (1)・・・・・・・・・Undercoat. (2)・・・・・・・・・Inner wall agent. (3)・・・・・・・・・Adhesive agent. (41.........
Claims (1)
の下塗剤を塗布して乾燥させ、その上にゴム系の中塗剤
を塗布し、さらに接着付与剤を施し、さらに液状シリコ
ンゴム系の上塗剤を塗布することを特徴とする鉄筋コン
クリートの補修工法。1) Apply an epoxy resin base coat to the surface of a reinforced concrete structure, let it dry, then apply a rubber intermediate coat, then apply an adhesion agent, and then apply a liquid silicone rubber top coat. A reinforced concrete repair method that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3315785A JPS61191706A (en) | 1985-02-20 | 1985-02-20 | Repairing of reinforced concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3315785A JPS61191706A (en) | 1985-02-20 | 1985-02-20 | Repairing of reinforced concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61191706A true JPS61191706A (en) | 1986-08-26 |
| JPH0361825B2 JPH0361825B2 (en) | 1991-09-24 |
Family
ID=12378730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3315785A Granted JPS61191706A (en) | 1985-02-20 | 1985-02-20 | Repairing of reinforced concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61191706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568249A2 (en) * | 1992-04-28 | 1993-11-03 | Xerox Corporation | Hydrophobic coating for a front face of a printhead in an ink jet printer |
| JP2005344421A (en) * | 2004-06-04 | 2005-12-15 | Asahi Kasei Homes Kk | Foundation and improvement method of base concrete |
-
1985
- 1985-02-20 JP JP3315785A patent/JPS61191706A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568249A2 (en) * | 1992-04-28 | 1993-11-03 | Xerox Corporation | Hydrophobic coating for a front face of a printhead in an ink jet printer |
| EP0568249A3 (en) * | 1992-04-28 | 1995-01-25 | Xerox Corp | Hydrophobic coating for a front face of a printhead in an ink jet printer. |
| JP2005344421A (en) * | 2004-06-04 | 2005-12-15 | Asahi Kasei Homes Kk | Foundation and improvement method of base concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0361825B2 (en) | 1991-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |