JPH08291608A - Finishing method of concrete external wall by using coating material - Google Patents
Finishing method of concrete external wall by using coating materialInfo
- Publication number
- JPH08291608A JPH08291608A JP11771795A JP11771795A JPH08291608A JP H08291608 A JPH08291608 A JP H08291608A JP 11771795 A JP11771795 A JP 11771795A JP 11771795 A JP11771795 A JP 11771795A JP H08291608 A JPH08291608 A JP H08291608A
- Authority
- JP
- Japan
- Prior art keywords
- coating material
- cement
- finishing
- dispersion
- film
- 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.)
- Pending
Links
Landscapes
- Finishing Walls (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塗材によるコンクリー
ト外壁の仕上方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of finishing a concrete outer wall with a coating material.
【０００２】[0002]
【従来の技術】従来、コンクリート外壁用仕上塗材は意
匠性とともにコンクリート躯体保護の目的で用いられて
おり、ＪＩＳ Ａ ６９０９等によって分類されてい
る。コンクリート保護機能を高めるためには遮断性能に
優れた塗膜を形成する塗材が用いられるが、コンクリー
トは水分を含む材料なので日射等によって水蒸気を発生
し、該塗膜では水蒸気を排出することができず、フクレ
や剥離を生じる場合があることが明らかになってきた。
そこで、これを解決する仕上塗材として、防水性を持ち
ながら透湿性を有する塗材が実用化されており、その一
例としてセメント系あるいはポリマーセメントモルタル
系仕上塗材に有機系材料を主成分とするトップコートを
組合わせる技術が提案されている。2. Description of the Related Art Conventionally, a finish coating material for a concrete outer wall has been used for the purpose of protecting the concrete skeleton as well as design, and is classified according to JIS A 6909 or the like. In order to enhance the concrete protection function, a coating material that forms a coating film with excellent barrier performance is used, but concrete is a material that contains moisture, so steam is generated by solar radiation, etc. It has become clear that blisters and peeling may occur.
Therefore, as a finishing coating material that solves this problem, a coating material having waterproofness and moisture permeability has been put into practical use, and as an example, a cement-based or polymer cement mortar-based finishing coating material is mainly composed of an organic material. Techniques for combining top coats that have been proposed have been proposed.
【０００３】[0003]
【発明が解決しようとする課題】然るに、該塗材は有機
系材料が外部表面に露出されるので、紫外線の影響によ
る経年変化が避けられなかった。However, since the organic material of the coating material is exposed on the outer surface, secular change due to the influence of ultraviolet rays cannot be avoided.
【０００４】[0004]
【課題を解決するための手段】防水性かつ透湿性を有
し、しかも紫外線による劣化が生じにくいコンクリート
外壁の仕上方法に関して研究した結果、高分子ディスバ
ージョンの連続塗膜を形成した上に、セメント系又はポ
リマーセメント系の仕上塗材を５００μｍ以上被覆する
ことによって紫外線による塗膜劣化が防止できること、
また、高分子ディスパージョンの乾燥膜厚を特定の範囲
に限定することで防水性と透湿性の相反する性質を兼ね
備えることができるとの知見を得て本発明を完成するに
至った。[Means for Solving the Problems] As a result of research on a finishing method for a concrete outer wall which is waterproof and moisture permeable and is not easily deteriorated by ultraviolet rays, as a result, it is possible to form a continuous coating film of a polymer dispersant on the cement. That coating deterioration due to ultraviolet rays can be prevented by coating a coating material of 500 μm or more with a base or polymer cement-based finish
In addition, the present invention has been completed based on the finding that it is possible to combine the contradictory properties of waterproofness and moisture permeability by limiting the dry film thickness of the polymer dispersion to a specific range.
【０００５】すなわち、本発明は、乾燥膜厚が２０〜２
００μｍの連続塗膜を形成するように高分子ディスパー
ジョンを塗布した上に、セメント系仕上塗材又はポリマ
ーセメント系仕上塗材を乾燥膜厚が５００μｍ以上とな
るように塗り付けることを特徴とする塗材によるコンク
リート外壁の仕上方法である。That is, according to the present invention, the dry film thickness is 20 to 2
A coating characterized by coating a polymer dispersion so as to form a continuous coating film of 00 μm, and then coating a cement-based finishing coating material or a polymer cement-based finishing coating material so that the dry film thickness is 500 μm or more. It is a method of finishing the concrete outer wall with wood.
【０００６】本発明で使用される高分子ディスパージョ
ンは、ＪＩＳ Ａ ６２０３（セメント混和用ポリマー
ディスパージョン）に該当するものが使用でき、例えば
スチレンブタジエンゴム系、ポリアクリル酸エステル
系、エチレン−酢酸ビニル共重合系のものが示される。
中でも、コンクリートのアルカリに侵され難いポリアク
リル酸エステル系のものが好ましい。ポリ塩化ビニリデ
ン系や反応硬化形の高分子ディスパージョンは形成され
る塗膜が透湿性に劣るので好ましくない。ポリマーディ
スパージョンの乾燥膜厚は２０〜２００μｍでなければ
ならない。２０μｍより小さい膜厚であると、透水量が
大きくなり防水性が劣ってコンクリートに対する保護機
能が不十分となる。また、塗布する下地の表面粗さにも
よるが連続被膜を形成しにくくなるという弊害も出てく
る。２００μｍを超えると透湿度が小さくなり、経年後
に下地コンクリートからの水蒸気による塗膜の欠陥（ふ
くれ、はがれ）を生じる確率が高くなる。As the polymer dispersion used in the present invention, those corresponding to JIS A 6203 (polymer dispersion for cement admixture) can be used. For example, styrene butadiene rubber type, polyacrylic acid ester type, ethylene-vinyl acetate. Copolymers are shown.
Of these, polyacrylic acid ester-based materials that are not easily attacked by alkali of concrete are preferable. Polyvinylidene chloride-based and reaction-curable polymer dispersions are not preferable because the formed coating film has poor moisture permeability. The dry film thickness of the polymer dispersion should be between 20 and 200 μm. When the film thickness is smaller than 20 μm, the amount of water permeation becomes large, the waterproof property becomes poor, and the protective function against concrete becomes insufficient. In addition, depending on the surface roughness of the base to be applied, it is difficult to form a continuous film, which is also a problem. If it exceeds 200 μm, the water vapor transmission rate becomes small, and the probability of generation of defects (swelling, peeling) of the coating film due to water vapor from the concrete under the ground increases with time.
【０００７】ポリマーディスパージョン塗膜の上に塗布
する仕上塗材は一般に用いられているセメント系仕上塗
材やポリマーセメント系仕上塗材が用いられ、その厚さ
は乾燥膜厚で５００μｍ以上でなければならない。５０
０μｍより薄いと紫外線による塗膜劣化の防止効果が十
分に得られない。As the finish coating material to be applied on the polymer dispersion coating film, a commonly used cement-based finish coating material or polymer cement-based finish coating material is used, and the thickness thereof should be 500 μm or more in dry film thickness. I have to. Fifty
If the thickness is less than 0 μm, the effect of preventing deterioration of the coating film due to ultraviolet rays cannot be sufficiently obtained.
【０００８】本発明の実施方法を以下に説明する。常法
によって塗装仕上に適した下地調整を行う。その後、高
分子ディスパージョンを刷毛、ローラーあるいは吹付に
よって塗布する。高分子ディスパージョンが乾燥して塗
膜を形成した後、セメント系仕上塗材をコテ塗り、吹
付、ローラー塗り等によって塗布する。また、常法の下
地調整を行い、セメント系仕上塗材を塗布した後、高分
子ディスパージョンを刷毛、ローラーあるいは吹付によ
って塗布する。高分子ディスパージョンが乾燥して塗膜
を形成した後、セメント系仕上塗材をコテ塗り、吹付、
ローラー塗り等によって塗布する方法によっても本発明
の効果は得られる。すなわち、本発明の主旨は高分子デ
ィスパージョンを塗布した上にセメント系仕上塗材を塗
り付けることである。A method for carrying out the present invention will be described below. The base is adjusted by a conventional method to suit the paint finish. Then, the polymer dispersion is applied by brush, roller or spraying. After the polymer dispersion has dried to form a coating film, a cement-based finishing coating material is applied by iron coating, spraying, roller coating, or the like. In addition, after adjusting the base material in the usual way and applying the cement-based finishing coating material, the polymer dispersion is applied by a brush, a roller or spraying. After the polymer dispersion dries to form a coating film, a cement-based finishing coating material is ironed, sprayed,
The effect of the present invention can also be obtained by a method of applying by roller coating or the like. That is, the gist of the present invention is to apply the cement-based finishing coating material on the polymer dispersion.
【０００９】[0009]
【実施例】高分子ディスパージョン塗膜とセメント系又
はポリマーセメント系仕上塗膜の複層塗膜を作成し、Ｊ
ＩＳ Ａ ６９１０（複層仕上塗材）に従って透水量
を、ＪＩＳ Ｚ ０２０８（防湿包装材料の透湿度試験
方法（カップ法））に従って透湿度を測定した。なお、
透水試験ではＪＩＳ Ａ ５４０３に規定する厚さ４ｍ
ｍのフレキシブル板を４００×２００ｍｍに切断したも
のに塗材を塗布したものを試験体として用い、透湿度試
験では離型紙上に塗布した塗材をはがしフィルム状にし
た塗材を試験体として用いた。また、ＪＩＳ Ａ １４
１５（プラスチック建築材料の促進暴露試験方法）の４
に規定するサンシャインカーボンアーク灯を用いて５に
よって試験を行い、２０００時間照射した後、上記透水
試験および透湿度試験を行い、塗膜劣化について検討し
た。[Example] A multi-layer coating film of a polymer dispersion coating film and a cement-based or polymer cement-based finishing coating film was prepared.
The water permeability was measured according to IS A 6910 (multi-layer finish coating material), and the water vapor permeability was measured according to JIS Z 0208 (moisture permeability test method (cup method) of moisture-proof packaging material). In addition,
4m thickness specified in JIS A 5403 for water permeability test
A flexible plate of m was cut into 400 x 200 mm and coated with a coating material was used as a test body. In the moisture permeability test, the coating material coated on release paper was peeled off and a film-shaped coating material was used as a test body. I was there. In addition, JIS A 14
4 of 15 (accelerated exposure test method for plastic building materials)
The test was carried out by using a sunshine carbon arc lamp specified in 5 above, and after irradiation for 2000 hours, the above-mentioned water permeability test and moisture permeability test were carried out to examine deterioration of the coating film.
【００１０】実施例１〜４、比較例１〜４ 高分子ディスパージョンとして中央理化工業株式会社製
のアクリル系エマルション（商品名；リカボンドＥＴ−
６６３）を用い、ポリマーセメント系仕上塗材として日
本セメント株式会社製の白色ポルトランドセメント１０
０重量部に前記の高分子ディスパージョン２０重量部、
メチルセルロース（信越化学工業株式会社製 商品名；
Ｈｉ−メトローズ９０ＳＨ４，０００）０．１５重量部
及び水道水４０重量部を加えて混練したものを用い、高
分子ディスパージョンの膜厚及び高分子ディスパージョ
ンとポリマーセメント系塗材の塗布順序を変えた塗膜を
作製した。その結果を表−１に示す。Examples 1 to 4 and Comparative Examples 1 to 4 As a polymer dispersion, an acrylic emulsion manufactured by Chuo Rika Kogyo Co., Ltd. (trade name; Ricabond ET-
663) and white portland cement 10 manufactured by Nippon Cement Co., Ltd. as a polymer cement finishing coating material.
0 parts by weight to 20 parts by weight of the polymer dispersion,
Methyl cellulose (trade name of Shin-Etsu Chemical Co., Ltd .;
Hi-Metroze 90SH4,000) 0.15 parts by weight and 40 parts by weight of tap water were added and kneaded, and the film thickness of the polymer dispersion and the coating order of the polymer dispersion and the polymer cement-based coating material were changed. A coating film was prepared. The results are shown in Table-1.
【００１１】[0011]
【表１】 [Table 1]
【００１２】実施例５〜７、比較例５〜６ 高分子ディスパージョンとして旭化成工業株式会社製の
アクリル系エマルション（商品名；ポリトロンＺ−８５
０）を用い、ポリマーセメント系仕上塗材として日本セ
メント株式会社製の白色ポルトランドセメント１００重
量部に前記の高分子ディスパージョン５０重量部、メチ
ルセルロース（信越化学工業株式会社製商品名；Ｈｉ−
メトローズ９０ＳＨ１５，０００）０．１重量部、日本
プラスター株式会社製の珪砂（商品名；ＮＰ珪砂８号）
１００重量部及び水道水５０重量部を加えて混練したも
のを用い、高分子ディスパージョンの上にポリマーセメ
ント系仕上塗材を塗布した２層の仕上塗膜と、ポリマー
セメント系仕上塗材を塗布した上に高分子ディスパージ
ョンを塗布し、さらにポリマーセメント系仕上塗材を塗
布した３層の仕上塗膜を作製した。また、セメント系仕
上塗材として日本セメント株式会社製の白色ポルトラン
ドセメント１００重量部に日本プラスター株式会社製の
珪砂（商品名；ＮＰ珪砂８号）１００重量部及び水道水
５０重量部を加えて混練したものを用い、高分子ディス
パージョンの上にセメント系仕上塗材を塗布した塗膜を
作製した。その結果を表−２に示す。Examples 5 to 7, Comparative Examples 5 to 6 As a polymer dispersion, an acrylic emulsion manufactured by Asahi Kasei Kogyo Co., Ltd. (trade name; Polytron Z-85).
0), as a polymer cement-based finishing coating material, 100 parts by weight of white Portland cement manufactured by Nippon Cement Co., Ltd., 50 parts by weight of the above polymer dispersion, methyl cellulose (trade name of Shin-Etsu Chemical Co., Ltd .; Hi-
Metroses 90SH15,000) 0.1 part by weight, silica sand made by Nippon Plaster Co., Ltd. (trade name: NP silica sand No. 8)
Using 100 parts by weight and 50 parts by weight of tap water and kneading, a polymer cement-based finishing coating material is applied onto the polymer dispersion, and a two-layer finishing coating material and a polymer cement-based finishing coating material are applied. Then, a polymer dispersion was applied thereto, and a polymer cement-based finishing coating material was further applied to prepare a three-layer finish coating film. As a cement-based finish coating material, 100 parts by weight of white Portland cement manufactured by Nippon Cement Co., Ltd. and 100 parts by weight of silica sand (trade name; NP silica sand No. 8) manufactured by Nippon Plaster Co., Ltd. and 50 parts by weight of tap water were added and kneaded. Using the above, a coating film was prepared by applying a cement-based finishing coating material on the polymer dispersion. The results are shown in Table-2.
【００１３】[0013]
【表２】 [Table 2]
【００１４】ＪＩＳ Ａ ６９１０（複層仕上塗材）で
の透水試験の目標値は０．５ｍｌ以下である。透湿度試
験では目標値は規定されていないが、一般に透湿性があ
るといわれている仕上塗材の透湿度は１００ｇ／ｍ2 ，
２４ｈ以上であるため、これを目標値とした。試験結果
より、セメント系仕上塗材及びポリマーセメント系仕上
塗材のみでは透水量０．５ｍｌを大幅に超え防水性に劣
るが、エマルションをあらかじめ２０μｍ以上塗布する
ことによって、防水性が改善されることがわかった。ま
た、エマルションを２００μｍ以上の厚さに塗布すると
透湿度が１００ｇ／ｍ2 ，２４ｈ以下となり、コンクリ
ート内部の水分を排出する機能に劣ることがわかった。
さらに、ポリマーセメント系仕上塗材塗布後上塗りとし
てエマルションを塗布するより、あらかじめエマルショ
ンを塗布した上にポリマーセメント系仕上塗材を塗布し
たほうが、紫外線による塗膜劣化による防水性及び透湿
性の低下が生じにくいことがわかった。The target value of the water permeability test according to JIS A 6910 (multi-layer finish coating material) is 0.5 ml or less. Although the target value is not specified in the moisture permeability test, the moisture permeability of the finish coating material, which is generally said to have moisture permeability, is 100 g / m 2 ,
Since it was 24 hours or more, this was set as the target value. From the test results, the cement-based finish coating material and the polymer cement-based finish coating material alone have a water permeability significantly exceeding 0.5 ml and are inferior in waterproofness, but the waterproofness is improved by applying an emulsion of 20 μm or more in advance. I understood. Further, it was found that when the emulsion was applied to a thickness of 200 μm or more, the water vapor transmission rate became 100 g / m 2 , 24 hours or less, and the function of discharging the water inside the concrete was poor.
Furthermore, rather than applying an emulsion as a top coat after applying a polymer cement-based finish coating material, it is better to apply the polymer cement-based finish coating material on top of the emulsion in advance because the deterioration of waterproofness and moisture permeability due to deterioration of the coating film due to ultraviolet rays. It turned out to be unlikely to occur.
【００１５】[0015]
【発明の効果】ポリマーディスパージョンの上にセメン
ト系またはポリマーセメント系の仕上塗材を塗布するこ
とによって、防水性かつ透湿性を有し、しかも紫外線に
よる劣化が生じにくいコンクリート外壁の仕上が可能と
なったため、コンクリート保護機能が優れ、かつ剥離し
にくく経年劣化が生じにくい建築物の仕上が可能となっ
た。EFFECTS OF THE INVENTION By applying a cement-based or polymer-cement-based finishing coating material on a polymer dispersion, it is possible to finish a concrete outer wall having waterproofness and moisture permeability and being resistant to deterioration by ultraviolet rays. As a result, the concrete protection function is excellent, and it is possible to finish buildings that are resistant to peeling and that do not deteriorate over time.
Claims (1)
を形成するように高分子ディスパージョンを塗布した上
に、セメント系仕上塗材又はポリマーセメント系仕上塗
材を乾燥膜厚が５００μｍ以上となるように塗り付ける
ことを特徴とする塗材によるコンクリート外壁の仕上方
法。1. A cement-based finishing coating material or a polymer-cement-based finishing coating material having a dry film thickness of 500 μm or more after coating a polymer dispersion so as to form a continuous coating film having a dry film thickness of 20 to 200 μm. A method for finishing a concrete outer wall with a coating material, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11771795A JPH08291608A (en) | 1995-04-20 | 1995-04-20 | Finishing method of concrete external wall by using coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11771795A JPH08291608A (en) | 1995-04-20 | 1995-04-20 | Finishing method of concrete external wall by using coating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08291608A true JPH08291608A (en) | 1996-11-05 |
Family
ID=14718557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11771795A Pending JPH08291608A (en) | 1995-04-20 | 1995-04-20 | Finishing method of concrete external wall by using coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08291608A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696546A (en) * | 2013-12-17 | 2014-04-02 | 佛山澳特板业有限公司 | Antibacterial cement type plate and preparation method thereof |
| CN103696553A (en) * | 2013-12-17 | 2014-04-02 | 佛山澳特板业有限公司 | High definition print processing method for surface of cementum plate and cementum plate with prints |
-
1995
- 1995-04-20 JP JP11771795A patent/JPH08291608A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696546A (en) * | 2013-12-17 | 2014-04-02 | 佛山澳特板业有限公司 | Antibacterial cement type plate and preparation method thereof |
| CN103696553A (en) * | 2013-12-17 | 2014-04-02 | 佛山澳特板业有限公司 | High definition print processing method for surface of cementum plate and cementum plate with prints |
| CN103696546B (en) * | 2013-12-17 | 2016-05-11 | 佛山澳特板业有限公司 | A kind of antibiotic cement scutum and preparation method thereof |
| CN103696553B (en) * | 2013-12-17 | 2016-05-11 | 佛山澳特板业有限公司 | A kind of cement scutum surface high definition air brushing processing method and the cement scutum with air brushing |
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