JP2003343065A - Forming method for inorganic hardened layer - Google Patents
Forming method for inorganic hardened layerInfo
- Publication number
- JP2003343065A JP2003343065A JP2002151294A JP2002151294A JP2003343065A JP 2003343065 A JP2003343065 A JP 2003343065A JP 2002151294 A JP2002151294 A JP 2002151294A JP 2002151294 A JP2002151294 A JP 2002151294A JP 2003343065 A JP2003343065 A JP 2003343065A
- Authority
- JP
- Japan
- Prior art keywords
- inorganic
- coating material
- water
- coating
- hardened layer
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建築物、土木構造
物等の屋外部に露出する部位に適用可能な無機質硬化層
の形成方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an inorganic hardened layer which can be applied to a portion exposed to an outdoor portion such as a building or a civil engineering structure.
【０００２】[0002]
【従来の技術】従来、建築物、土木構造物等の基材表面
を被覆する材料としては、セメント等の水硬性無機質物
質を結合剤とする無機質塗材が汎用的に使用されてい
る。このような無機質塗材は、十分な強度を有する硬化
層が形成可能であること、あるいは厚膜の硬化層が形成
可能であること等の特長を有している。無機質塗材によ
って形成された硬化層には、通常、仕上塗材による仕上
塗装が施される。この仕上塗装によって、日射や降雨等
に起因する硬化層の経年劣化やエフロレッセンスの発生
を防止することが可能となる。また、種々の色彩やテク
スチャーによる意匠性を付与することも可能となる。2. Description of the Related Art Conventionally, an inorganic coating material having a hydraulic inorganic substance such as cement as a binder has been generally used as a material for coating the surface of a substrate such as a building or a civil engineering structure. Such an inorganic coating material has features such that a hardened layer having sufficient strength can be formed, or a thick film hardened layer can be formed. The hardened layer formed of the inorganic coating material is usually subjected to finish coating with a finish coating material. By this finish coating, it becomes possible to prevent the deterioration of the hardened layer over time and the occurrence of efflorescence caused by sunlight or rainfall. In addition, it is possible to impart designability with various colors and textures.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、仕上塗
装を行う前に降雨等があると、無機質硬化層が水を含ん
だ状態となる場合がある。このように水を含んだ無機質
硬化層に仕上塗装を施すと、仕上塗膜の裏側に存在する
水の圧力、あるいは内部の水蒸気圧や空気の熱膨張等に
よって、内側から塗膜を押上げる力が加わり、経時的に
膨れ、剥れ、割れ等の塗膜欠陥が生じるおそれがある。
特に、直接太陽光が照射される部分は温度上昇が大き
く、より顕著に膨れ、剥れ、割れ等の塗膜欠陥が発生し
やすくなる。このような問題の発生を防止するため、仕
上塗装工事が始まる前に降雨等があった場合には、無機
質硬化層が十分に硬化するのを待たなければならず、結
果的に工期の長期化を招いてしまう。特に、軽量骨材等
を含む無機質塗材によって形成された無機質硬化層で
は、その比重が小さく、水を吸いやすい性質を有するた
め、上述のような問題がより発生しやすい。However, if there is rainfall or the like before the finish coating, the inorganic hardened layer may be in a state of containing water. When the finish coating is applied to the inorganic cured layer containing water in this way, the force of pushing up the coating from the inside due to the pressure of water existing on the back side of the finish coating, the internal steam pressure or the thermal expansion of air. Therefore, coating film defects such as swelling, peeling, and cracking may occur over time.
In particular, the temperature of the portion that is directly irradiated with sunlight increases greatly, and coating defects such as swelling, peeling, and cracking are more likely to occur. In order to prevent such problems from occurring, if there is rainfall etc. before the finishing coating work begins, it is necessary to wait for the inorganic hardened layer to fully harden, resulting in a longer construction period. Will be invited. In particular, an inorganic hardened layer formed of an inorganic coating material containing a lightweight aggregate or the like has a small specific gravity and has a property of easily absorbing water, and thus the above-mentioned problems are more likely to occur.
【０００４】本発明は、このような点に鑑みなされたも
のであり、無機質硬化層の形成段階における降雨等に起
因する塗膜欠陥の発生を防止し、工期の短縮にも寄与す
ることができる方法を得ることを目的とするものであ
る。The present invention has been made in view of the above points, and can prevent the occurrence of coating film defects due to rainfall or the like at the stage of forming an inorganic hardened layer, and can also contribute to shortening the construction period. The purpose is to get a way.
【０００５】[0005]
【課題を解決するための手段】これらの課題を解決する
ため、本発明者は鋭意検討を行い、無機質塗材を塗付
し、該無機質塗材が未乾燥未硬化状態である間に、透湿
撥水性シート状物を被着して無機質塗材を硬化させ、そ
の後に仕上塗材を塗付する方法を発明した。本発明によ
れば、無機質塗材の乾燥硬化過程において形成された透
湿撥水層が、水硬性無機質物質の水和反応を阻害せずに
余剰の水分を透湿機能により蒸発させ、かつ、無機質塗
材の乾燥硬化途中における、降雨、結露などによる外部
からの水の浸入を撥水機能で抑制することができるた
め、極めて効率的に無機質塗材の乾燥硬化を達成させ、
さらには仕上塗材の塗膜欠陥発生を防止することが可能
となる。すなわち、本発明は下記の特徴を有するもので
ある。In order to solve these problems, the present inventor has conducted diligent studies and applied an inorganic coating material, and while the inorganic coating material is in an undried and uncured state, a transparent coating is applied. The inventors have invented a method of applying a wet water-repellent sheet material to cure an inorganic coating material, and then applying a finishing coating material. According to the present invention, the moisture-permeable water-repellent layer formed in the process of drying and curing the inorganic coating material evaporates excess water by the moisture-permeable function without inhibiting the hydration reaction of the hydraulic inorganic substance, and, During the drying and curing of the inorganic coating material, it is possible to suppress the intrusion of water from the outside due to rainfall, dew condensation, etc. by the water repellent function, so that the drying and curing of the inorganic coating material can be achieved extremely efficiently,
Furthermore, it becomes possible to prevent the occurrence of coating film defects in the finish coating material. That is, the present invention has the following features.
【０００６】１．基材に対し、水硬性無機質物質を結合
剤とする無機質塗材を塗付した後、透湿撥水性シート状
物を被着し、前記無機質塗材を硬化させ、次いで前記シ
ート状物を脱着した後、少なくとも１種以上の仕上塗材
を塗付することを特徴とする無機質硬化層の形成方法。
２．基材に対し、水硬性無機質物質を結合剤とする無機
質塗材を塗付した後、透湿撥水性シート状物を被着し、
前記無機質塗材を硬化させ、次いで少なくとも１種以上
の仕上塗材を塗付することを特徴とする無機質硬化層の
形成方法。
３．基材に対し、水硬性無機質物質を結合剤とする無機
質塗材を塗付した後、透湿撥水性シート状物を前記無機
質塗材の表面が未乾燥のうちに被着し、前記無機質塗材
を硬化させ、次いで少なくとも１種以上の仕上塗材を塗
付することを特徴とする無機質硬化層の形成方法。
４．前記仕上塗材のうち、第１の仕上塗材が有機溶剤を
含有するものであることを特徴とする項１〜項３のいず
れか記載の無機質硬化層の形成方法。
５．前記無機質塗材が、水硬性無機質物質及び軽量骨材
を含有するものであることを特徴とする項１〜項４のい
ずれかに記載の無機質硬化層の形成方法。1. After applying an inorganic coating material using a hydraulic inorganic substance as a binder to the base material, a moisture-permeable and water-repellent sheet material is applied, the inorganic coating material is cured, and then the sheet material is desorbed. And then applying at least one or more finishing coating materials. 2. After applying an inorganic coating material using a hydraulic inorganic substance as a binder to the base material, a moisture permeable and water repellent sheet-like material is applied,
A method for forming an inorganic cured layer, which comprises curing the inorganic coating material, and then applying at least one or more finishing coating materials. 3. After applying an inorganic coating material having a hydraulic inorganic substance as a binder to the substrate, a moisture-permeable water-repellent sheet-like material is applied while the surface of the inorganic coating material is undried, and the inorganic coating material is applied. A method for forming an inorganic cured layer, which comprises curing a material and then applying at least one or more finishing coating materials. 4. The method for forming an inorganic hardened layer according to any one of Items 1 to 3, wherein the first finish coating material contains an organic solvent among the finish coating materials. 5. Item 5. The method for forming an inorganic hardened layer according to any one of Items 1 to 4, wherein the inorganic coating material contains a hydraulic inorganic substance and a lightweight aggregate.
【０００７】[0007]
【発明の実施の形態】以下、本発明をその実施の形態と
ともに詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below along with its embodiments.
【０００８】［基材］本発明は、建築物、土木構築物等
の主として屋外部に露出する各部位、例えば壁、柱、
梁、床、屋上、屋根等の基材表面に対し適用できるもの
である。このような基材としては、例えば、コンクリー
ト、モルタル、軽量コンクリート、サイディングボー
ド、押出成形板等のセメント系基材、圧延鋼材、軽量形
鋼、Ｈ形鋼、角形鋼管等の金属系基材等が挙げられる。
これら基材は、何らかの表面処理（シーラー、サーフェ
ーサー、フィラー、防錆プライマー等による下地処理
等）が施されたものであってもよく、既に塗膜が形成さ
れたものであってもよい。また、無機質硬化層の脱落防
止等のために、基材表面にメタルラス、ワイヤーラス等
の各種ラスを取り付けておくこともできる。[Substrate] The present invention relates to various parts of a building, a civil engineering structure, etc. which are mainly exposed to the outside, such as walls, columns,
It can be applied to the surface of base materials such as beams, floors, rooftops and roofs. Examples of such a base material include cement-based base materials such as concrete, mortar, lightweight concrete, siding board and extruded plate, and metal-based base materials such as rolled steel material, lightweight shaped steel, H-shaped steel and rectangular steel pipe. Is mentioned.
These base materials may be subjected to some surface treatment (sealer, surfacer, filler, surface treatment with a rust-preventive primer, etc.), or may already have a coating film formed thereon. Further, various laths such as metal laths and wire laths may be attached to the surface of the base material in order to prevent the cured inorganic layer from falling off.
【０００９】［無機質塗材］本発明における無機質塗材
は、水硬性無機質物質を結合剤とするものである。水硬
性無機質物質としては、例えば、ポルトランドセメン
ト、アルミナセメント、超速硬セメント、膨張セメン
ト、酸性リン酸塩セメント、シリカセメント、石灰混合
セメント、高炉セメント、フライアッシュセメント、キ
ーンスセメント、マグネシアセメント、ドロマイト、水
硬性石灰、石膏等が挙げられる。これらは１種以上また
は２種以上で使用することができる。[Inorganic coating material] The inorganic coating material in the present invention uses a hydraulic inorganic substance as a binder. Examples of hydraulic inorganic substances include, for example, Portland cement, alumina cement, ultra-rapid cement, expansive cement, acidic phosphate cement, silica cement, lime mixed cement, blast furnace cement, fly ash cement, keens cement, magnesia cement, dolomite. , Hydraulic lime, gypsum and the like. These can be used alone or in combination of two or more.
【００１０】水硬性無機質物質以外の成分としては、例
えば、パーライト、膨張バーミキュライト、スチレン樹
脂発泡体、エチレン酢酸ビニル樹脂発泡体、塩化ビニル
樹脂発泡体等の軽量骨材；水酸化アルミニウム、水酸化
マグネシウム、ゼオライト、ハロイサイト、アロフェ
ン、エトリンジャイト等の吸熱物質；珪砂、寒水石、重
質炭酸カルシウム、クレー、カオリン、タルク、沈降性
硫酸バリウム、炭酸バリウム、ホワイトカーボン、珪藻
土等の骨材；ガラス繊維、鋼繊維、ビニロン繊維、パル
プ繊維等の繊維物質；クロロプレンゴム、ブタジエンゴ
ム、アクリル樹脂、酢酸ビニル樹脂、エポキシ樹脂、ア
スファルト、ゴムアスファルト等の有機質結合剤；その
他増粘剤、消泡剤、減水剤、膨張剤、凝結促進剤、界面
活性剤等を使用することもできる。これら成分は適用部
位、用途、要求性能等に応じて適宜選択、混合すること
ができる。このうち、水硬性無機質物質及び軽量骨材を
含有する無機質塗材では、断熱性を高めることができ、
さらに吸熱物質を含有する無機質塗材では、耐火性を付
与することもできる。本発明では、特に無機質塗材が軽
量骨材を含有するものである場合に、顕著な効果を発揮
することができる。As components other than the hydraulic inorganic substance, for example, lightweight aggregates such as perlite, expanded vermiculite, styrene resin foam, ethylene vinyl acetate resin foam, vinyl chloride resin foam; aluminum hydroxide, magnesium hydroxide , Zeolite, halloysite, allophane, ettringite, and other endothermic substances; silica sand, cryolite, heavy calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, white carbon, diatomaceous earth, and other aggregates; glass fiber, steel Fiber materials such as fibers, vinylon fibers, pulp fibers; organic binders such as chloroprene rubber, butadiene rubber, acrylic resin, vinyl acetate resin, epoxy resin, asphalt, rubber asphalt; other thickeners, defoamers, water reducing agents, Use swelling agents, setting accelerators, surfactants, etc. And it can also be. These components can be appropriately selected and mixed depending on the application site, application, required performance and the like. Among these, in the inorganic coating material containing a hydraulic inorganic substance and a lightweight aggregate, the heat insulating property can be increased,
Furthermore, an inorganic coating material containing an endothermic substance can also be provided with fire resistance. In the present invention, a remarkable effect can be exerted particularly when the inorganic coating material contains a lightweight aggregate.
【００１１】本発明では、上述の無機質塗材に水を加え
て均一に混合したものを基材に塗付する。通常、水は塗
付直前に混合される。塗付時には、コテ、スプレー等の
塗装器具を用いることができる。形成される硬化層の厚
みは、適用部位、用途、要求性能等に応じて適宜設定す
ればよい。特に、本発明は無機質硬化層の厚みが５ｍｍ
以上、さらには１０〜５０ｍｍである場合に有効であ
る。In the present invention, water is added to the above-mentioned inorganic coating material and uniformly mixed, and the mixture is applied to the substrate. Water is usually mixed just before application. At the time of coating, a coating tool such as a trowel or a spray can be used. The thickness of the formed cured layer may be appropriately set according to the application site, application, required performance, and the like. Particularly, in the present invention, the thickness of the inorganic hardened layer is 5 mm.
Above, further, it is effective in the case of 10 to 50 mm.
【００１２】［透湿撥水性シート状物］本発明では、無
機質塗材を塗付した後、その表面に透湿撥水性シート状
物（以下単に「シート状物」ともいう）を被着する。本
発明では、このようなシート状物を使用することによ
り、無機質塗材の乾燥硬化を阻害せずに、無機質塗材の
乾燥硬化段階における降雨等による水の浸入を抑制する
ことができる。[Moisture-permeable and water-repellent sheet material] In the present invention, after the inorganic coating material is applied, a moisture-permeable and water-repellent sheet material (hereinafter also simply referred to as "sheet material") is applied to the surface thereof. . In the present invention, by using such a sheet-like material, it is possible to suppress the infiltration of water due to rainfall or the like in the dry-curing stage of the inorganic coating material without inhibiting the dry-curing of the inorganic coating material.
【００１３】シート状物は、（ｉ）仕上塗材の塗付前に
脱着してもよいし、（ｉｉ）被着させたままであっても
よい。無機質塗材にシート状物を被着する方法として
は、上記（ｉ）の場合、接着剤で部分的に接着する方
法、釘・鋲等で固定する方法等が挙げられる。上記（ｉ
ｉ）の場合は、上記（ｉ）と同様の方法を採用すること
もできるが、無機質塗材の表面が未乾燥のうちに、無機
質塗材の接着性を利用して被着することが望ましい。こ
の方法によれば、無機質硬化層の強度を高めることがで
きる。このような効果は、無機質硬化層が軽量骨材を含
む場合に特に有効である。The sheet-like material may be detached (i) before application of the finish coating material, or (ii) may be left attached. Examples of the method of applying the sheet-like material to the inorganic coating material include, in the case of the above (i), a method of partially adhering with an adhesive, a method of fixing with a nail or a tack, and the like. Above (i
In the case of i), the same method as in the above (i) can be adopted, but it is desirable to apply by using the adhesiveness of the inorganic coating material while the surface of the inorganic coating material is undried. . According to this method, the strength of the inorganic hardened layer can be increased. Such an effect is particularly effective when the inorganic hardened layer contains a lightweight aggregate.
【００１４】本発明における透湿撥水性シート状物とし
ては、透湿性及び撥水性が発揮可能なものであれば特に
限定されず使用することができる。透湿撥水性シート状
物の具体例としては、例えば、特開昭５８−１４４１７
８号公報、特開昭６０−１７３１７８号公報、特開平３
−１６７３６２号公報、特開平４−２１６０３８号公
報、特開平６−１１４９９１号公報、特開平６−２００
４８１号公報、特開平６−３１３２７５号公報、特開平
７−５４２７４号公報、特開平７−２７９０５９号公
報、特開２００１−１３８４２５号公報、特開２００１
−２１４３７４号公報に記載されているもの等が挙げら
れる。このうち、シート状物としては各種繊維によって
構成される布状物が好適である。繊維としては、例え
ば、ポリエチレン繊維、ポリプロピレン繊維、ポリエス
テル繊維、ポリアミド繊維、ナイロン繊維、ビニロン繊
維、レーヨン繊維、アラミド繊維、炭素繊維、絹、麻、
綿等が挙げられる。このような布状物には仕上塗材が浸
透しやすく、仕上塗材との密着性を高めることが可能と
なる。The moisture-permeable and water-repellent sheet material in the present invention is not particularly limited as long as it can exhibit moisture permeability and water repellency. Specific examples of the moisture-permeable and water-repellent sheet material include, for example, JP-A-58-14417.
No. 8, JP-A-60-173178, JP-A-3.
-167362, JP-A-4-216038, JP-A-6-114991, and JP-A-6-200.
481, JP-A-6-313275, JP-A-7-54274, JP-A-7-279059, JP-A-2001-138425, and JP-A-2001.
The thing etc. which are described in the -214374 gazette are mentioned. Among these, a cloth-like material composed of various fibers is preferable as the sheet-like material. Examples of the fiber include polyethylene fiber, polypropylene fiber, polyester fiber, polyamide fiber, nylon fiber, vinylon fiber, rayon fiber, aramid fiber, carbon fiber, silk, hemp,
Examples include cotton. The finishing coating material easily penetrates into such a cloth-like material, and the adhesion with the finishing coating material can be enhanced.
【００１５】［仕上塗材］本発明では、上記無機質塗材
の硬化後、少なくとも１種の仕上塗材を塗付する。仕上
塗材を塗付するタイミングは、無機質塗材の種類、厚み
等にもよるが、通常、無機質塗材の塗付後３〜６０日経
過後である。[Finishing Coating Material] In the present invention, at least one finishing coating material is applied after the inorganic coating material is cured. Although the timing of applying the finish coating material depends on the type and thickness of the inorganic coating material, it is usually 3 to 60 days after the application of the inorganic coating material.
【００１６】仕上塗材としては、所望の色彩や表面形
状、あるいは所望の塗膜性能等に応じ、各種材料を使用
することができる。仕上塗材は１種のみでもよいし、２
種以上を組合せて使用してもよく、具体的には下記のよ
うな仕様例が挙げられる。
・第１の仕上塗材として下地への密着性能を有する塗
材、第２の仕上塗材として凹凸模様が形成可能な塗材、
第３の仕上塗材として有色塗材を使用。
・第１の仕上塗材として下地への密着性能を有する塗
材、第２の仕上塗材として凹凸模様が形成可能な有色塗
材を使用。必要に応じ第３の仕上塗材としてクリヤー塗
材を使用。
・第１の仕上塗材として下地への密着性能を有する塗
材、第２の仕上塗材として有色塗材を使用。
・第１の仕上塗材として下地への密着性能を有しかつ凹
凸模様が形成可能な塗材、第２の塗材として有色塗材を
使用。
・第１の仕上塗材として下地への密着性能を有する有色
塗材を使用。As the finish coating material, various materials can be used depending on the desired color, surface shape, desired coating film performance and the like. Only one type of finish coating material may be used, or 2
You may use in combination of 2 or more types, and the following specification examples are specifically mentioned. -A coating material having adhesion performance to the base as a first finishing coating material, a coating material capable of forming an uneven pattern as a second finishing coating material,
A colored coating material is used as the third finish coating material. -A coating material having adhesion to the base is used as the first finishing coating material, and a colored coating material capable of forming an uneven pattern is used as the second finishing coating material. If necessary, use clear coating material as the third finish coating material. -A coating material having adhesion to the base is used as the first finishing coating material, and a colored coating material is used as the second finishing coating material. -A coating material having adhesion to the base and capable of forming an uneven pattern is used as the first finish coating material, and a colored coating material is used as the second coating material. -Uses a colored coating material that has adhesion to the substrate as the first finish coating material.
【００１７】上述のような仕上塗材のうち、有色塗材と
しては、例えば、ＪＩＳ Ｋ５６６３「合成樹脂エマル
ションペイント」、ＪＩＳ Ｋ５６６０「つや有り合成
樹脂エマルションペイント」、ＪＩＳ Ｋ５６５４「ア
クリル樹脂エナメル」、ＪＩＳ Ｋ５６５６「建築用ポ
リウレタン樹脂エナメル」、ＪＩＳ Ｋ５６５７「鋼構
造物用ポリウレタン樹脂エナメル」、ＪＡＳＳ１８ Ｍ
−２０７「非水分散形アクリル樹脂エナメル」、ＪＡＳ
Ｓ１８ Ｍ−４０４「アクリルシリコン樹脂塗料」、Ｊ
ＩＳ Ｋ５６５８「建築用ふっ素樹脂エナメル」、ＪＩ
Ｓ Ｋ５６５９「鋼構造物用ふっ素樹脂エナメル」、Ｊ
ＩＳ Ｋ５６６７「多彩模様塗料」等が挙げられる。凹
凸模様が形成可能な塗材あるいは凹凸模様が形成可能な
有色塗材としては、例えば、ＪＩＳ Ｋ５６６８「合成
樹脂エマルション模様塗料」、ＪＩＳ Ａ６９０９「建
築用仕上塗材」（例えば、薄付け仕上塗材、厚付け仕上
塗材、複層仕上塗材主材等）、その他石材調仕上塗材、
砂岩調仕上塗材等が挙げられる。Among the finish coating materials as described above, the color coating materials include, for example, JIS K5663 "Synthetic resin emulsion paint", JIS K5660 "Glossy synthetic resin emulsion paint", JIS K5654 "Acrylic resin enamel", JIS. K5656 "Polyurethane Resin Enamel for Building", JIS K5657 "Polyurethane Resin Enamel for Steel Structures", JASS18 M
-207 "Non-aqueous dispersion type acrylic resin enamel", JAS
S18 M-404 "Acrylic Silicone Resin Paint", J
IS K5658 "Architectural Fluorine Resin Enamel", JI
SK5659 "Fluorine Resin Enamel for Steel Structures", J
IS K5667 "multicolored paint" and the like can be mentioned. As the coating material capable of forming an uneven pattern or the colored coating material capable of forming an uneven pattern, for example, JIS K5668 "Synthetic resin emulsion pattern paint", JIS A6909 "Finishing coating material for construction" (for example, thin coating material , Thick finish coating materials, multi-layer finish coating materials, etc.), other stone finish coating materials,
Examples include sandstone finish coating materials.
【００１８】本発明における仕上塗材のうち、第１の仕
上塗材として使用するものについては、下地への密着性
能を有する必要がある。この点において、第１の仕上塗
材としては１種以上の有機溶剤を含むものが望ましい。
このような仕上塗材を使用すれば、無機硬化層表面が撥
水性を有しているにもかかわらず、無機質硬化層への浸
透性が高まり、密着性が向上する。さらに、無機質硬化
層表層部の補強効果を発揮することもできる。このよう
な補強効果は、無機質硬化層が軽量骨材を含む場合に特
に有効である。シート状物として布状物を使用した場合
は、第１の仕上塗材のシート状物への浸透性も高まり、
より密着性が向上するとともに、無機質硬化層表層部の
補強効果をいっそう高めることも可能となる。Among the finishing coating materials of the present invention, those used as the first finishing coating material need to have adhesiveness to the base. In this respect, it is desirable that the first finish coating material contains at least one organic solvent.
When such a finish coating material is used, the permeability to the inorganic cured layer is increased and the adhesion is improved even though the surface of the inorganic cured layer has water repellency. Furthermore, the reinforcing effect of the surface layer of the inorganic hardened layer can be exerted. Such a reinforcing effect is particularly effective when the inorganic hardened layer contains a lightweight aggregate. When a cloth-like material is used as the sheet-like material, the permeability of the first finish coating material into the sheet-like material is increased,
The adhesiveness is further improved, and the reinforcing effect of the surface layer of the inorganic hardened layer can be further enhanced.
【００１９】具体的に、有機溶剤としては、例えば、酢
酸エチル、酢酸ブチル等のエステル系有機溶剤；メタノ
ール、エタノール、ブタノール、イソプロパノール、ベ
ンジルアルコール等のアルコール系有機溶剤；メチルエ
チルケトン、メチルイソブチルケトン、シクロヘキサノ
ン等のケトン系有機溶剤；ヘキサン、シクロヘキサン、
石油ナフサ、ミネラルスピリット等の脂肪族系有機溶
剤；メチルセロソルブ、ブチルセロソルブ、ブチルカル
ビトール、プロピレングリコールモノメチルエーテル、
２，２，４−トリメチル−１，３−ペンタンジオールモ
ノイソブチレート等のエーテル系有機溶剤；トルエン、
キシレン等の芳香族系有機溶剤等が挙げられる。これら
は１種または２種以上で使用することができる。このよ
うな有機溶剤のうち、水への溶解性を有するものについ
ては、水と混合して使用することも可能である。Specific examples of the organic solvent include ester type organic solvents such as ethyl acetate and butyl acetate; alcohol type organic solvents such as methanol, ethanol, butanol, isopropanol and benzyl alcohol; methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone. Ketone-based organic solvents such as hexane, cyclohexane,
Aliphatic organic solvents such as petroleum naphtha and mineral spirits; methyl cellosolve, butyl cellosolve, butyl carbitol, propylene glycol monomethyl ether,
Ether-based organic solvents such as 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate; toluene,
Examples thereof include aromatic organic solvents such as xylene. These can be used alone or in combination of two or more. Of these organic solvents, those having solubility in water can be used as a mixture with water.
【００２０】第１の仕上塗材における樹脂成分として
は、上述の有機溶剤を含む溶媒に溶解または分散可能な
ものであれば、特に限定されず使用することができる。
樹脂の種類としては、例えば、エチレン樹脂、酢酸ビニ
ル樹脂、ポリエステル樹脂、アルキッド樹脂、塩化ビニ
ル樹脂、塩素化ポリオレフィン樹脂、エポキシ樹脂、ア
クリル樹脂、ウレタン樹脂、アクリルシリコン樹脂、ふ
っ素樹脂等、あるいはこれらを複合したもの等が挙げら
れる。これらは１種または２種以上で使用することがで
きる。本発明における第１の仕上塗材としては、特に、
溶剤可溶型樹脂及び有機溶剤を含有するものが好適であ
る。また、撥水性の表面に馴染むように設計された、前
述の有機溶剤を含む水性塗材も利用可能である。The resin component in the first finish coating material is not particularly limited as long as it can be dissolved or dispersed in a solvent containing the above-mentioned organic solvent.
As the type of resin, for example, ethylene resin, vinyl acetate resin, polyester resin, alkyd resin, vinyl chloride resin, chlorinated polyolefin resin, epoxy resin, acrylic resin, urethane resin, acrylic silicon resin, fluorine resin, or the like, or these Examples include a composite. These can be used alone or in combination of two or more. As the first finish coating material in the present invention, in particular,
Those containing a solvent-soluble resin and an organic solvent are suitable. Further, an aqueous coating material containing the above-mentioned organic solvent, which is designed so as to be adapted to a water-repellent surface, can be used.
【００２１】本発明における仕上塗材の塗付方法として
は、公知の方法を採用することができる。例えば、スプ
レー、ローラー、鏝、刷毛等の塗装器具を用いて塗付す
ることができる。仕上塗材の塗付量は、使用する材料に
応じて適宜設定すればよい。As a method of applying the finish coating material in the present invention, a known method can be adopted. For example, it can be applied using a spraying device, a roller, a trowel, a brush or the like. The coating amount of the finish coating material may be appropriately set according to the material used.
【００２２】[0022]
【実施例】以下に実施例及び比較例を示し、本発明の特
徴をより明確にする。EXAMPLES Examples and comparative examples will be shown below to further clarify the characteristics of the present invention.
【００２３】（実施例１）１０００×４００×５ｍｍの
鉄板に直径９ｍｍの鉄筋を溶接し、さらにその鉄筋にメ
タルラスを針金にて取り付けたものを基材とした。次い
で、ポルトランドセメント１００重量部、膨張バーミキ
ュライト８０重量部、パーライト１２０重量部、酢酸ビ
ニル樹脂粉末２０重量部、炭酸カルシウム２００重量
部、水酸化アルミニウム２００重量部、及びガラス繊維
１０重量部からなる無機質塗材に水を加えたスラリー
を、上記基材に厚みが２０ｍｍとなるようにコテ塗りし
た。上記無機質塗材の塗付直後に、透湿撥水性シート状
物（ポリプロピレン繊維不織布）を、無機塗材の表面に
押さえ付けながら被着した。その後、常温にて静置し、
１日おきに試験体の表面に水を噴霧した。シート状物の
被着から２８日後、溶剤可溶型エポキシ樹脂（固形分５
０重量％）１００重量部、酢酸ブチル２０重量部、メチ
ルイソブチルケトン５重量部からなる仕上塗材１を、塗
付量０．２ｋｇ／ｍ２でスプレー塗装し、常温にて２時
間静置した。次いで、仕上塗材２（商品名「レナエクセ
レントＡ」；エスケー化研株式会社製）を塗付量２．５
ｋｇ／ｍ２でスプレー塗装し、２４時間後、さらに仕上
塗材３（商品名「弾性ウレタンカラー」；エスケー化研
株式会社製）を塗付量０．３ｋｇ／ｍ２でスプレー塗装
し、常温にて１４日間養生した。養生後の試験体につい
て、ＪＩＳ Ｋ５６００−５−６に準じた付着性試験を
行ったが、特に異常は認められなかった。また、養生後
の試験体に２５０Ｗ赤外線ランプを２４時間照射した
後、膨れ発生の有無を確認したが、特に異常は認められ
なかった。(Example 1) A base material was obtained by welding a reinforcing bar having a diameter of 9 mm to an iron plate of 1000 x 400 x 5 mm, and further attaching a metal lath to the rebar with a wire. Then, an inorganic coating consisting of 100 parts by weight of Portland cement, 80 parts by weight of expanded vermiculite, 120 parts by weight of perlite, 20 parts by weight of vinyl acetate resin powder, 200 parts by weight of calcium carbonate, 200 parts by weight of aluminum hydroxide, and 10 parts by weight of glass fiber. A slurry prepared by adding water to a material was troweled onto the above base material so that the thickness was 20 mm. Immediately after the application of the inorganic coating material, a moisture-permeable and water-repellent sheet material (polypropylene fiber nonwoven fabric) was applied to the surface of the inorganic coating material while pressing it. Then, leave it at room temperature,
Water was sprayed on the surface of the test body every other day. Twenty-eight days after the application of the sheet material, a solvent-soluble epoxy resin (solid content 5
(0% by weight) 100 parts by weight, 20 parts by weight of butyl acetate, and 5 parts by weight of methyl isobutyl ketone were spray-coated at a coating amount of 0.2 kg / m 2 and allowed to stand at room temperature for 2 hours. . Then, a coating material 2 (trade name "Lena Excellent A"; manufactured by SK Kaken Co., Ltd.) is applied at a coating amount of 2.5.
Spray coating at kg / m 2 and after 24 hours, further finish coating material 3 (trade name “Elastic Urethane Color” manufactured by SK Kaken Co., Ltd.) at a coating amount of 0.3 kg / m 2 at room temperature. I was cured for 14 days. An adhesion test according to JIS K5600-5-6 was carried out on the cured test body, but no particular abnormality was observed. Further, after the cured test body was irradiated with a 250 W infrared lamp for 24 hours, the presence or absence of swelling was confirmed, but no particular abnormality was observed.
【００２４】（比較例１）透湿撥水性シート状物を使用
しなかった以外は、実施例１と同様にして試験を行っ
た。その結果、付着性試験で塗膜が剥離してしまった。
赤外線ランプ照射後には膨れが発生してしまった。Comparative Example 1 A test was conducted in the same manner as in Example 1 except that the moisture-permeable and water-repellent sheet material was not used. As a result, the coating film peeled off in the adhesion test.
Swelling occurred after irradiation with the infrared lamp.
【００２５】[0025]
【発明の効果】本発明によれば、無機質硬化層の形成段
階における降雨等に起因する塗膜欠陥の発生を防止する
ことができる。本発明は、工期の短縮にも寄与すること
ができる。According to the present invention, it is possible to prevent the occurrence of coating film defects due to rainfall or the like in the stage of forming an inorganic hardened layer. The present invention can also contribute to shortening the construction period.
Claims (5)
する無機質塗材を塗付した後、透湿撥水性シート状物を
被着し、前記無機質塗材を硬化させ、次いで前記シート
状物を脱着した後、少なくとも１種以上の仕上塗材を塗
付することを特徴とする無機質硬化層の形成方法。1. A base material is coated with an inorganic coating material containing a hydraulic inorganic substance as a binder, and then a moisture-permeable and water-repellent sheet is applied to cure the inorganic coating material. A method for forming an inorganic hardened layer, which comprises applying at least one or more finishing coating materials after detaching a sheet-like material.
する無機質塗材を塗付した後、透湿撥水性シート状物を
被着し、前記無機質塗材を硬化させ、次いで少なくとも
１種以上の仕上塗材を塗付することを特徴とする無機質
硬化層の形成方法。2. A substrate is coated with an inorganic coating material containing a hydraulic inorganic substance as a binder, and then a moisture-permeable and water-repellent sheet material is applied to cure the inorganic coating material. A method for forming an inorganic cured layer, which comprises applying at least one finishing coating material.
する無機質塗材を塗付した後、透湿撥水性シート状物を
前記無機質塗材の表面が未乾燥のうちに被着し、前記無
機質塗材を硬化させ、次いで少なくとも１種以上の仕上
塗材を塗付することを特徴とする無機質硬化層の形成方
法。3. A base material is coated with an inorganic coating material containing a hydraulic inorganic substance as a binder, and then a moisture-permeable and water-repellent sheet is applied while the surface of the inorganic coating material is undried. Then, the above-mentioned inorganic coating material is cured, and then at least one or more finishing coating materials are applied, and a method for forming an inorganic cured layer is characterized.
機溶剤を含有するものであることを特徴とする請求項１
〜３のいずれか記載の無機質硬化層の形成方法。4. The first finish coating material of the finish coating materials contains an organic solvent.
4. The method for forming an inorganic hardened layer according to any one of 3 to 3.
軽量骨材を含有するものであることを特徴とする請求項
１〜４のいずれかに記載の無機質硬化層の形成方法。5. The method of forming an inorganic hardened layer according to claim 1, wherein the inorganic coating material contains a hydraulic inorganic substance and a lightweight aggregate.
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|---|---|---|---|
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002151294A JP4017445B2 (en) | 2002-05-24 | 2002-05-24 | Method for forming inorganic hardened layer |
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| Publication Number | Publication Date |
|---|---|
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