JPH0552393B2 - - Google Patents
Info
- Publication number
- JPH0552393B2 JPH0552393B2 JP60217548A JP21754885A JPH0552393B2 JP H0552393 B2 JPH0552393 B2 JP H0552393B2 JP 60217548 A JP60217548 A JP 60217548A JP 21754885 A JP21754885 A JP 21754885A JP H0552393 B2 JPH0552393 B2 JP H0552393B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- mortar
- color
- repaired
- applying
- 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.)
- Expired - Lifetime
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、打放しコンクリートの補修部分の変
色防止方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for preventing discoloration of repaired areas of fair-faced concrete.
＜従来の技術＞
コンクリート工事では、最近打放し工法が再評
価されはじめた。この工法では駆体表面に型枠の
木目模様が写つて自然らしい趣きを呈するが、そ
の反面駆体表面に巣穴、ピンホール、水あばた等
の欠損部分、あるいはコールド・ジヨイントがで
きて所謂あばたとなる。このため型枠を取り外し
たのち、必ず補修工事を行なわなけねばならな
い。<Conventional technology> In concrete construction, the exposed construction method has recently begun to be reevaluated. With this construction method, the wood grain pattern of the formwork is reflected on the surface of the concrete, giving it a natural appearance, but on the other hand, defects such as burrows, pinholes, pockmarks, or cold joints are formed on the surface of the concrete, causing so-called pockmarks. becomes. For this reason, repair work must be carried out after removing the formwork.
従来一般に行なわれている補修方法は、接着剤
を加えたモルタルに適宜の顔料を加えて駆体表面
に色合わせした補修モルタルをつくり、これを塗
布して、欠損部分を穴埋めするものである。この
補修によつて欠損部分は一応埋まるが、塗布した
モルタルが乾燥するとその表面が変色し、補修し
ない部分との間に色違いができて外観を損うとい
う欠点がある。 A commonly used repair method is to create a repair mortar that matches the color of the surface of the precursor by adding an appropriate pigment to mortar containing an adhesive, and then applying this to fill in the defective part. This repair temporarily fills the defective part, but when the applied mortar dries, its surface changes color, creating a difference in color from the part that is not repaired, which impairs the appearance.
＜発明が解決しようとする問題点＞
本発明は、この欠点を解消した補修部分の変色
防止方法を提供しようとするものである。<Problems to be Solved by the Invention> The present invention aims to provide a method for preventing discoloration of a repaired part that eliminates this drawback.
まず補修部分が変色する理由を考えると、その
細かなメカニズムははつきりしないが、一応つぎ
のようにいえる。すなわちモルタルはアルカリ性
であるが、空気中の湿気を含んだ炭酸ガスや雨水
中の酸類にあうとアルカリ性が減じて中性化す
る。そしてこの中和によつて色も変化する。そこ
で、その中和を防げば、変色もなくなるはずであ
る。 First of all, when considering the reason why the repaired area discolors, the detailed mechanism is not clear, but it can be said that it is as follows. In other words, mortar is alkaline, but when it comes into contact with humid carbon dioxide in the air or acids in rainwater, its alkalinity decreases and it becomes neutral. The color also changes due to this neutralization. Therefore, if this neutralization is prevented, discoloration should also be eliminated.
本発明は、この考え方に沿つて開発したもの
で、つぎのように構成する。すなわち接着剤例え
ば接着性を有する合成樹脂エマルジヨンを含むモ
ルタルに駆体表面と同色の顔料を混ぜて駆体表面
と色合わせした補修用モルタルを、コンクリート
駆体の欠損部分に塗布して穴埋めしたのち、モル
タル部分が乾燥するのをまつて、その表面にコン
クリート用防水剤を塗布することを特徴とする打
放しコンクリートの補修部分の変色防止方法であ
る。 The present invention was developed based on this idea, and is configured as follows. In other words, a repair mortar containing an adhesive, such as a synthetic resin emulsion with adhesive properties, is mixed with a pigment of the same color as the surface of the concrete to match the color of the surface of the concrete, and then applied to the defective part of the concrete to fill in the holes. This is a method for preventing discoloration of a repaired part of exposed concrete, which is characterized by applying a concrete waterproofing agent to the surface of the mortar part after waiting for it to dry.
＜実施例＞
以下に本考案の実施例を説明する。コンクリー
ト用防水剤には、アクリル樹脂系塗膜型防水剤や
シリコン樹脂系浸透型防水剤があるが、いずれか
に限るものでもなく、要するにモルタルが湿気や
水分を吸収することを防ぐものであればよい。一
例として、ヘキスト合成(株)製のモビニール745（商
標）がある。<Examples> Examples of the present invention will be described below. Waterproofing agents for concrete include acrylic resin-based paint film type waterproofing agents and silicone resin-based penetrating waterproofing agents, but they are not limited to either of these.In short, any material that prevents mortar from absorbing moisture or water can be used. Bye. An example is Movinyl 745 (trademark) manufactured by Hoechst Gosei Co., Ltd.
これは微粒子タイプのアクリル酸エステル系共
重合樹脂エマルジヨンで、その塗膜は硬く、光沢
があり、耐候性にすぐれている。最低造膜温度は
０℃のため、常温でそのまま塗布できる。この原
液を水で20〜30％にわり、ハケにて１〜２回塗布
する。塗布量は100〜300ｇ／ｍとする。 This is a fine particle type acrylic ester copolymer resin emulsion, and its coating film is hard, glossy, and has excellent weather resistance. Since the minimum film forming temperature is 0°C, it can be applied directly at room temperature. Dilute this stock solution to 20-30% with water and apply it once or twice with a brush. The coating amount is 100 to 300 g/m.
＜発明の効果＞
本発明は以上説明したように、駆耐表面と色合
わせしたモルタル補修部分の表面へモルタルが乾
燥すると同時に防水剤を塗布して、モルタルが中
性化するのを防いで、変色を阻止するという簡単
な方法であるが、これにより事後補修部分が変色
するという従来工法の大きな欠点を解消できるも
のである。<Effects of the Invention> As explained above, the present invention prevents the mortar from becoming neutral by applying a waterproofing agent to the surface of the mortar repaired part that matches the color of the drying-resistant surface at the same time as the mortar dries. This is a simple method that prevents discoloration, but it eliminates the major drawback of conventional methods, which is that the repaired area becomes discolored.
Claims (1)
料を混ぜて駆体表面と色合せした補修用モルタル
を、コンクリート駆体の欠損部分に塗布して穴埋
めしたのち、このモルタル部分が乾燥するのをま
つて、その表面にコンクリート用防水剤を塗布す
ることを特徴とする打放しコンクリートの補修部
分の変色防止方法。1. After applying a repair mortar made by mixing a pigment of the same color as the surface of the concrete to the mortar containing adhesive to match the color of the surface of the concrete to the defective part of the concrete base and filling the hole, let this mortar part dry. A method for preventing discoloration of a repaired part of exposed concrete, which comprises applying a concrete waterproofing agent to the surface of the repaired part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21754885A JPS6278361A (en) | 1985-09-30 | 1985-09-30 | Method for preventing discoloration of repaired part of castconcrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21754885A JPS6278361A (en) | 1985-09-30 | 1985-09-30 | Method for preventing discoloration of repaired part of castconcrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6278361A JPS6278361A (en) | 1987-04-10 |
| JPH0552393B2 true JPH0552393B2 (en) | 1993-08-05 |
Family
ID=16705981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21754885A Granted JPS6278361A (en) | 1985-09-30 | 1985-09-30 | Method for preventing discoloration of repaired part of castconcrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6278361A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537904B2 (en) * | 1972-06-19 | 1978-03-23 |
-
1985
- 1985-09-30 JP JP21754885A patent/JPS6278361A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6278361A (en) | 1987-04-10 |
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