JPH04164878A - Surface protection for structure or member made of brittle material such as concrete - Google Patents
Surface protection for structure or member made of brittle material such as concreteInfo
- Publication number
- JPH04164878A JPH04164878A JP28908390A JP28908390A JPH04164878A JP H04164878 A JPH04164878 A JP H04164878A JP 28908390 A JP28908390 A JP 28908390A JP 28908390 A JP28908390 A JP 28908390A JP H04164878 A JPH04164878 A JP H04164878A
- Authority
- JP
- Japan
- Prior art keywords
- coating material
- concrete
- cracks
- surface layer
- layer coating
- 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
- 239000000463 material Substances 0.000 title claims abstract description 95
- 239000004567 concrete Substances 0.000 title claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 61
- 239000011248 coating agent Substances 0.000 claims abstract description 60
- 239000011241 protective layer Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 14
- 239000002344 surface layer Substances 0.000 abstract description 9
- 239000000758 substrate Substances 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract 1
- 239000002585 base Substances 0.000 description 25
- 239000003973 paint Substances 0.000 description 12
- 239000003822 epoxy resin Substances 0.000 description 11
- 229920000647 polyepoxide Polymers 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- 229920005570 flexible polymer Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- -1 Araldite HY 96 (4) Chemical class 0.000 description 3
- 229920000800 acrylic rubber Polymers 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 239000011433 polymer cement mortar Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920003319 Araldite® Polymers 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000004844 aliphatic epoxy resin Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010454 slate Substances 0.000 description 2
- 229920001567 vinyl ester resin Polymers 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
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などの脆性材料からなる構造物ま
たは部材の表面保護方法に係るものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for protecting the surface of structures or members made of brittle materials such as concrete.
コンクリートなどの脆性材料からなる構造物または部材
などは防水性、耐薬品性、美感などを付与するため、ま
た鉄筋コンクリートにおいて鉄筋の腐食の原因となる中
性化、塩害や、反応性骨材によるアルカリ骨材反応など
を促進する外的要因（水、酸素、塩分）の遮断などコン
クリートなどの脆性材料からなる構造物または部材など
の持つ欠点を補うなどを目的とした表面保護が行なわれ
ている。Structures and components made of brittle materials such as concrete are used to provide waterproofness, chemical resistance, aesthetic appearance, etc., and to protect against carbonation, salt damage, and alkali damage caused by reactive aggregates in reinforced concrete, which cause corrosion of reinforcing bars. Surface protection is performed for the purpose of compensating for the defects of structures or members made of brittle materials such as concrete, such as blocking external factors (water, oxygen, salt) that promote aggregate reactions, etc.
しかし、これまでの単に表面に被覆材を被覆するだけの
方法では乾燥収縮などによりコンクリートに新たにひび
われが発生したり、すでに発生したひびわれの路面荷重
などの外力や、温度変化などによる動きまたは目地など
の変位に追従できずに被覆材が破断して、本来の目的を
充分に達成できない事態が発生することがある。However, with the conventional method of simply covering the surface with a coating material, new cracks may appear in the concrete due to drying shrinkage, or existing cracks may move or become damaged due to external forces such as road loads or temperature changes. A situation may occur in which the covering material is unable to follow such displacement and breaks, making it impossible to fully achieve its original purpose.
特にコンクリートにひびわれが発生したときには、被覆
材がまったく剥離しなければ無限大の伸び（ゼロスパン
における被覆材の追従性）が必要になる。In particular, when cracks occur in concrete, infinite elongation (followability of the covering material at zero span) is required if the covering material does not peel off at all.
このような問題を解決するために、従来は、■ひびわれ
などの周りで、ある程度の剥がれが生ずるように被覆材
のコンクリートに対する付着性をある程度小さくする。In order to solve these problems, the conventional method is to reduce the adhesion of the coating material to concrete to some extent so that some peeling occurs around cracks and the like.
■抗張力を持つ被覆材を使用する。■Use a covering material with tensile strength.
■伸び能力が大きい被覆材を使用する。■Use a covering material with high elongation capacity.
■被覆材の膜厚を大きくする などの方法が取られてきている。■Increase the thickness of the coating material Methods such as these have been adopted.
しかしながら、前述の方法では
（イ）密着性を低下させ、ひびわれ部分などの剥がれを
発生させる方法は、さらに剥がれを進行させる危険があ
る。However, in the above-mentioned method (a), the method of reducing adhesion and causing peeling at cracked portions, etc., has the risk of further progressing peeling.
（ロ）たとえばコンクリートにひびわれが発生するとき
の力は非常に大きいため被覆材の抗張力を高めてもひび
われの発生を完全に押さえることは出来ない。(b) For example, the force that causes cracks in concrete is extremely large, so even if the tensile strength of the coating material is increased, cracks cannot be completely suppressed.
（ハ）被覆材の伸び能力を大きくすることは塗膜の防水
性、耐薬品性、耐塩害性などの機能を低下させやすい。(c) Increasing the elongation ability of the coating material tends to reduce the functions of the coating film, such as waterproofness, chemical resistance, and salt damage resistance.
（ニ）同じ材料を使い膜厚を多くすることは保護費用が
高くなる。(d) Using the same material and increasing the film thickness increases the protection cost.
などの問題がある。There are problems such as.
本発明の目的は、上記問題点に鑑み、コンクリートなど
の脆性材料からなる構造物または部材の表面保護を行う
場合、まずその表層被覆材より弾性率の小さい別の下地
被覆材を被覆することにより、外的要因の遮断に対する
性能などを低下させることなくひびわれに対する追従性
を向上させることにある。In view of the above-mentioned problems, an object of the present invention is to protect the surface of a structure or member made of brittle materials such as concrete by first covering it with another base covering material having a lower elastic modulus than the surface covering material. The objective is to improve the ability to follow cracks without deteriorating the performance against external factors.
添付図面を参照して本発明の詳細な説明する。 The present invention will now be described in detail with reference to the accompanying drawings.
請求項１記載の発明は、コンクリートなどの脆性材料か
らなる構造物または部材ａの表面保護を行う場合、まず
表面１に表層被覆材より弾性率の小さい下地被覆材２を
被覆し、その上に表層被覆材３を被覆せしめて保護層す
を形成することを特徴とするコンクリートなどの脆性材
料からなる構造物または部材の表面保護方法に係るもの
である。In the invention according to claim 1, when protecting the surface of a structure or member a made of a brittle material such as concrete, the surface 1 is first coated with a base coating material 2 having a lower modulus of elasticity than the surface layer coating material, and then The present invention relates to a method for protecting the surface of a structure or member made of a brittle material such as concrete, which is characterized in that a protective layer is formed by coating the surface layer coating material 3.
請求項２記載の発明は、下地被覆材２の厚さを１０〜５
０００ ｐ ｍ 、表層被覆材３の厚さを１０〜１５０
００μｍに設定した請求項１のコンクリートなどの脆性
材料からなる構造物または部材の表面保護方法に係るも
のである。In the invention according to claim 2, the thickness of the base covering material 2 is 10 to 5.
000 p m, and the thickness of the surface coating material 3 is 10 to 150 p.m.
The present invention relates to a method for protecting the surface of a structure or member made of a brittle material such as concrete according to claim 1, wherein the thickness is set to 00 μm.
請求項３記載の発明は、下地被覆材２の弾性率を５００
＆ｇｆ／ｃ■２以下に設定した請求項１のコンクリート
などの脆性材料からなる構造物または部材の表面保護方
法に係るものである。In the invention according to claim 3, the elastic modulus of the base covering material 2 is 500.
The present invention relates to a method for protecting the surface of a structure or member made of a brittle material such as concrete according to claim 1, wherein the value of &gf/c■ is set to 2 or less.
本発明のコンクリートなどの脆性材料からなる構造物ま
たは部材ａへの表面保護方法は、たとえばコンクリート
に新たなひびわれが発生したり、すでに発生していたひ
びわれや目地などが温度変化や外力などによりその幅が
広がった場合、コンクリートとの付着性を維持し、また
表面１に被覆された弾性率の小さい下地被覆材２により
緩衝される。さらにひびわれが広がり、弾性率の小さい
下地被覆材２が破断しても、その上に被覆された表層被
覆材３に対しては単独で被覆した場合よりその追従性が
大幅に向上する。The surface protection method for a structure or member a made of brittle materials such as concrete according to the present invention can be used to prevent new cracks from occurring in concrete, or existing cracks or joints from changing due to temperature changes or external forces. When the width increases, it maintains adhesion to concrete and is buffered by the base covering material 2 coated on the surface 1 and having a small modulus of elasticity. Furthermore, even if the cracks widen and the base covering material 2, which has a small elastic modulus, breaks, the followability of the surface covering material 3 coated thereon will be significantly improved compared to when the base covering material 3 is coated alone.
下地被覆材２の厚さは１０〜５０００μｍ１表層被覆材
３の厚さは１０〜１５０００μｍが望ましく、それ以上
の厚さでは経済性の点で無駄であり、それ以下の厚さで
は保護作用を果たさない。The thickness of the base coating material 2 is preferably 10 to 5,000 μm.1 The thickness of the surface coating material 3 is preferably 10 to 15,000 μm. A thickness greater than that is wasteful from an economic point of view, and a thickness less than that will not provide a protective effect. do not have.
下地被覆材２の弾性率は５００ｈｇｆ／ｃｍ２以下が望
ましく、それ以上大きくては実効が得られない。The modulus of elasticity of the base covering material 2 is desirably 500 hgf/cm2 or less, and if it is larger than that, it will not be effective.
〔実施例１〕
道路用境界状コンクリート（９Ｘ ９ｘ ６０ｃ調）の
−面に（表１）に示した仕様（引張弾性率の小さい下地
被覆材を先に塗布する）で塗装した後、第１図のような
ＪＩＳ Ａ１１０６ ｒコンクリート曲げ強度試験方法
Ｊに準拠し、荷重速度８〜１０ｋｇｆ／ｃ＋＋”・ｓｉ
ｎで、歪みゲージを用いてコンクリートに発生するひび
われをモニターしながら載荷する。塗膜にひびわれが発
生したときの下地のコンクリートのひびわれ幅を測定す
る。[Example 1] After painting the - side of road boundary concrete (9x 9x 60c tone) according to the specifications shown in (Table 1) (first applying the base coating material with a small tensile modulus), the first In accordance with JIS A1106 r concrete bending strength test method J as shown in the figure, the loading rate is 8 to 10 kgf/c++"・si
At step n, loading is carried out while monitoring cracks that occur in the concrete using a strain gauge. Measure the width of cracks in the underlying concrete when cracks occur in the paint film.
記号 塗装材名 引張弾性率（＆９
ｆ／ｃｗ２）
Ａ エポキシ樹脂塗料 ３００００Ｂ
柔軟性エポキシ樹脂塗料 ７０Ｃ柔軟性ポ
リマーセメントモルタル ５０Ｄ アクリルゴム塗
料 ４５Ｅ ビニルエステル樹脂塗
料 ４００００（表１）に示したＮＯ，２，Ｎ
Ｏ，３，ＮＯ，６，ＮＯ，７のように予め引張弾性率の
小さいＣ，Ｄ、を下地被覆材２として塗布した後、夫々
の下地被覆材２より引張弾性率の大きいＡ、Ｂを表層被
覆材３として塗布したほうが大きなひびわれに追従する
ことが確認された。Symbol Painting material name Tensile modulus (&9
f/cw2) A Epoxy resin paint 30000B
Flexible epoxy resin paint 70C Flexible polymer cement mortar 50D Acrylic rubber paint 45E Vinyl ester resin paint No. 2, N shown in 40000 (Table 1)
After applying C and D, which have a small tensile modulus of elasticity like O, 3, NO, 6, NO, and 7, as the base covering material 2, A and B, which have a higher tensile modulus than the respective base covering material 2, are applied. It was confirmed that coating as surface coating material 3 was better able to follow large cracks.
また、ＮＯ，１，ＮＯ，５のように下地被覆材２を使用
せずにＡ、Ｂのみを塗装した場合にはＸ印をつけたよう
に追従性の悪いことが確認された。Furthermore, it was confirmed that when only A and B were painted without using the base coating material 2, such as No. 1, No. 5, the followability was poor as indicated by the X mark.
また、Ｎ０１４のように引張弾性率の高いＥを下地被覆
材２として塗布し、それより引張弾性率の低い八を表層
被覆材３として塗布した場合もＸ印をつけたように追従
性が太き（低下することが確認された。Also, when E, which has a high tensile modulus of elasticity like N014, is applied as the base covering material 2, and 8, which has a lower tensile modulus of elasticity than that, is applied as the surface covering material 3, the followability is thicker as shown by the X mark. (It was confirmed that the
〔実施例２〕
第２図のようにスレート板（７５Ｘ１５０Ｘ５■）の中
央にノツチを設けておき裏面に （表２）に示した仕様
で塗装を行う。塗膜に傷を付けないようにノツチ部で少
し折り曲げ、スレートだけにひびわれを入れる。これを
引張試験機に取り付け、クロスヘツド速度５ｍｍ／ｆｆ
１ｉｎで引張試験を行い、表層被覆材３が破断したとき
のひびわれ幅を測定する。[Example 2] As shown in Fig. 2, a notch is provided in the center of a slate board (75 x 150 x 5 cm), and the back surface is painted according to the specifications shown in Table 2. Bend it slightly at the notch to avoid damaging the paint film, and create cracks only in the slate. Attach this to a tensile tester and set the crosshead speed to 5mm/ff.
A tensile test is performed at 1 inch, and the crack width when the surface coating material 3 breaks is measured.
記号 塗装材名称 引張弾性率Ｃｋｑ
ｆ／ｃ■２）
Ｅ ビニルエステル系樹脂塗料 ４００００Ａ
エポキシ樹脂塗料 ３００００Ｂ
柔軟性エポキシ樹脂塗料 ７０Ｃ柔軟性ポ
リマーセメントモルタル ５０Ｄ アクリルゴム塗
料 ４５（表２）に示したＮＯ，３，
ＮＯ，４，ＮＯ，５，ＮＯ，７，Ｎｏ、８゜ＮＯ１９の
ように予め引張弾性率の小さいＢ、Ｃ，Ｄを下地被覆材
２として塗布した後、夫々の下地被覆材２より引張弾性
率の大きいＥ、Ａ、１３を表層被覆材３として塗布した
ほうが大きなひびわれに追従することが確認された。Symbol Coating material name Tensile modulus Ckq
f/c■2) E Vinyl ester resin paint 40000A
Epoxy resin paint 30000B
Flexible epoxy resin paint 70C Flexible polymer cement mortar 50D Acrylic rubber paint No. 3 shown in 45 (Table 2)
NO, 4, NO, 5, NO, 7, No, 8゜After B, C, and D with low tensile modulus such as NO19 are applied as the base covering material 2, the tensile elasticity is higher than that of each base covering material 2. It was confirmed that applying E, A, and 13, which have a higher ratio, as the surface coating material 3, was able to follow larger cracks.
また、ＮＯ，１，ＮＯ，２，ＮＯ，６のように下地被覆
材２を使用せずにＥ、Ａのみを塗装した場合にはｘ印を
つけたように追従性の悪いことが確認された。In addition, when only E and A were painted without using base coating material 2, such as NO, 1, NO, 2, NO, and 6, it was confirmed that the followability was poor as indicated by the x mark. Ta.
柔軟性エポキシ樹脂塗料の一例としては、次のようなエ
ポキシ樹脂の一種または複数種、硬化剤、硬化促進剤、
他に必要に応じて顔料を加えた組成物があげられる。An example of a flexible epoxy resin paint is one or more of the following epoxy resins, a curing agent, a curing accelerator,
Other examples include compositions to which pigments are added if necessary.
（１）ビスフェノールＡ型エポキシ樹脂。(1) Bisphenol A type epoxy resin.
エピクロルヒドリンとビスフェノールＡからなるエーテ
ル型エポキシ樹脂（例えば、日本チバガイギー株式会社
製、アラルダイトＧＹ２５（２）可撓性エポキシ樹脂。Ether type epoxy resin consisting of epichlorohydrin and bisphenol A (for example, Araldite GY25 (2) flexible epoxy resin manufactured by Nippon Ciba Geigy Co., Ltd.).
エーテル型のメチル置換型エポキシ樹脂、エーテル型の
側鎖状型エポキシ樹脂（例えば、旭電化工業株製、アデ
カレジンＥｌ”４０００）エーテル型の脂肪族型エポキ
シ樹脂（例えば、坂本薬品工業株式会社製、５Ｒ−ＴＰ
Ｏ）エステル型の脂肪族エポキシ樹脂
（３）硬化剤
ポリアミドアミン（例えば、冨士化成工業株式会社製、
トーマイド２２５）
硬化促進剤（第３級アミン、例えば、日本チバガイギー
株式会社製、アラルダイトＨＹ ９６（４）顔料
柔軟性ポリマーセメントモルタルの一例としては、結合
材にセメントとガラス転位点温度が低いポリマー、例え
ばエチレン酢酸ビニル共重合樹脂、アクリル酸エステル
共重合樹脂（例えばヘキスト合成株式会社製モビトンＬ
ＤＭ３７５０）などのエマルジョンを用いたモルタルが
あげられる。Ether-type methyl-substituted epoxy resins, ether-type side-chain epoxy resins (e.g., Asahi Denka Kogyo Co., Ltd., Adeka Resin El"4000), ether-type aliphatic epoxy resins (e.g., Sakamoto Pharmaceutical Co., Ltd., 5R-TP
O) Ester type aliphatic epoxy resin (3) Curing agent polyamide amine (for example, manufactured by Fuji Kasei Kogyo Co., Ltd.,
Tomide 225) Curing accelerator (tertiary amine, e.g. Araldite HY 96 (4), manufactured by Nippon Ciba Geigy Co., Ltd.) Pigment Flexible polymer An example of a cement mortar is cement and a polymer with a low glass transition temperature as a binder, For example, ethylene vinyl acetate copolymer resin, acrylic ester copolymer resin (for example, Mobiton L manufactured by Hoechst Synthesis Co., Ltd.
Examples include mortar using emulsions such as DM3750).
次に下地被覆材２及び表層被覆祠３の仕様例を示すと下
表の通りである。Next, examples of specifications of the base coating material 2 and the surface coating material 3 are shown in the table below.
尚、下地被覆材２としては、コンクリートなどへの付着
性が良好なことが必要である。そのためにブライマーを
塗布した後、下地被覆材２を被覆する場合もある。The base covering material 2 needs to have good adhesion to concrete and the like. For this purpose, the base covering material 2 may be coated after the primer is applied.
また、表層被覆材３との付着性が良いことが要求される
。そのために、下地被覆材２を被覆した後、表層被覆材
３との付着性を良くするために、ブライマーを塗布する
場合もある。In addition, it is required that the adhesion to the surface coating material 3 is good. For this reason, after coating the base coating material 2, a brimer may be applied in order to improve adhesion to the surface coating material 3.
厚さは、経済性の点、またコンクリートのひびわれ、ま
たは目地などの変位が考えられ、被覆厚さと追従性の関
係から、またひびわれの繰り返しの動きへの追従性の点
から、これらを総合して１０μｍ〜５０００μｍが望ま
しい。Thickness is determined from the viewpoint of economy, cracks in the concrete, displacement of joints, etc., and considering the relationship between coating thickness and followability, and the followability to repeated movements of cracks. The thickness is preferably 10 μm to 5000 μm.
弾性率は常温で５００ｋｇｆ／ｃｍ２以下が望ましい。The elastic modulus is preferably 500 kgf/cm2 or less at room temperature.
たとえば柔軟性ポリマーセメントモルタル、アクリルゴ
ム塗料、かんてん、などの他、低弾性率のもので被覆可
能なものであれば良い。For example, in addition to flexible polymer cement mortar, acrylic rubber paint, and cans, any material that can be coated with a low modulus of elasticity may be used.
次に表層被覆材３としては、耐塩害性、耐薬品性、中性
化防止、防水性などに秀れ、下地被覆材２との付着性が
良好で、厚さを１０〜１５０００μｍ程度にすることが
望ましい。Next, the surface coating material 3 should have excellent salt damage resistance, chemical resistance, carbonation prevention, waterproofness, etc., good adhesion to the base coating material 2, and a thickness of about 10 to 15,000 μm. This is desirable.
それ以上の厚さでは経済性の点で無駄であり、それ以下
の厚さでは保護作用を果たさない。たとえば、床面や屋
根などのような防止、あるいは耐重量性舗装などに対応
できる。A thickness greater than that is wasteful from an economic point of view, and a thickness less than that does not provide any protection. For example, it can be used for prevention of floors, roofs, etc., or for weight-bearing pavement.
耐候性が要求される場合は耐候性の良い表層被覆材３を
選定する。If weather resistance is required, a surface coating material 3 with good weather resistance is selected.
被処理物に劣化、または損傷がある場合は、その部分を
サンドブラスト、サンダーケレンなどにより除去する。If the object to be treated is deteriorated or damaged, remove it by sandblasting, sanding, etc.
また、さらに補修を行った後に本工法を実施することも
ある。This method may also be implemented after further repairs have been made.
また、本工法を新しい被処理物Ｊこ適用する場合におい
ても、表面にコンクリートに於けるレイタンスのように
弱い部分がある場合は除去したり、また含浸性の良い材
料を含浸して補強するなどの前処理を行うことが望まし
い。Also, when applying this method to a new workpiece, if there is a weak part on the surface such as laitance in concrete, remove it or strengthen it by impregnating it with a material with good impregnation properties. It is desirable to carry out pre-treatment.
また、塗装間隔は夫々の塗布材料に適応した塗布間隔を
守って次の塗布に移る。Further, the coating interval is maintained at a coating interval suitable for each coating material before moving on to the next coating.
以上、実施例に限らず、下地被覆材２については環境状
態の必要に応じて多層構造としても良く、さらに表層被
覆材３についても、前記実施例に限らず、環境状態の必
要に応じてその他の多層構造（Ｆ ＲＩ）も含む）のも
のを採用する。The above is not limited to the embodiments, but the base coating material 2 may have a multi-layer structure depending on the environmental conditions, and the surface coating material 3 may also have a multilayer structure, not limited to the above embodiments, depending on the environmental conditions. (including FRI)).
本発明は、上述のように表層被覆材を被覆するに当たっ
て表層被覆材よりも弾性率の小さい下地被覆材を被覆し
て表面保護を形成することから下地被覆材のもつ大きな
伸び性能と表層被覆ヰ（の防水性、耐薬品性、耐塩害性
などの機能性を保ち、コンクリートなどの脆性材料から
なる構造物または部材のひびわれや目地の変位に対する
追従性を著しく向」二せしめ、中性化、塩害などによる
劣化に対してコンクリートなどの脆性材料からなる構造
物または部材の表面を保護することになる。As described above, when covering the surface layer coating material, the present invention forms surface protection by coating the base layer coating material with a lower modulus of elasticity than the surface layer coating material. (maintains functionality such as waterproofness, chemical resistance, and salt damage resistance, and significantly improves the ability to respond to cracks and joint displacement in structures or members made of brittle materials such as concrete.) This protects the surface of structures or members made of brittle materials such as concrete from deterioration due to salt damage.
−例として建築物の屋上における塗膜防水において動き
の大きいパラベット周辺部についても、この工法を採用
したところ、防水塗膜のひびわれを確実に防止でき、秀
れた実用性を発揮することが確認された。- For example, when this method was applied to areas around parabet where there is a lot of movement when waterproofing a coating on the roof of a building, it was confirmed that cracking of the waterproofing coating could be reliably prevented, demonstrating excellent practicality. It was done.
図面は本発明の一実施例を示すもので、第１゜２図はコ
ンクリートなどの脆性材料からなる構造物または部材ａ
に本発明の保護層すを形成した曲げ強度試験の実施説明
図である。
ａ・・・コンクリートなどの脆性材料からなる構造物ま
たは部材、ｂ・・・保護層、１・・・表面、２・・・下
地被覆材、３・・・表層被覆材。
”さ１図
さど潮
ノThe drawings show one embodiment of the present invention, and Figures 1 and 2 show structures or members made of brittle materials such as concrete.
FIG. 3 is an explanatory diagram of a bending strength test in which a protective layer of the present invention was formed on a substrate. a... Structure or member made of brittle material such as concrete, b... Protective layer, 1... Surface, 2... Base coating material, 3... Surface coating material. ``Sa1 figure Sadoshio no
Claims (1)
部材の表面保護を行う場合、まず表面に表層被覆材より
弾性率の小さい下地被覆材を被覆し、その上に表層被覆
材を被覆せしめて保護層を形成することを特徴とするコ
ンクリートなどの脆性材料からなる構造物または部材の
表面保護方法。 ２ 下地被覆材の厚さを１０〜５０００μｍ、表層被覆
材の厚さを１０〜１５０００μｍに設定した請求項１の
コンクリートなどの脆性材料からなる構造物または部材
の表面保護方法。 ３ 下地被覆材の弾性率を５００ｋｇｆ／ｃｍ＾２以下
に設定した請求項１のコンクリートなどの脆性材料から
なる構造物または部材の表面保護方法。[Claims] 1. When protecting the surface of a structure or member made of a brittle material such as concrete, the surface is first coated with a base coating material whose modulus of elasticity is lower than that of the surface coating material, and then the surface coating material is applied on top of that. A method for protecting the surface of a structure or member made of a brittle material such as concrete, which comprises coating it to form a protective layer. 2. The method for protecting the surface of a structure or member made of a brittle material such as concrete according to claim 1, wherein the base covering material has a thickness of 10 to 5,000 μm, and the surface covering material has a thickness of 10 to 15,000 μm. 3. The method for protecting the surface of a structure or member made of a brittle material such as concrete according to claim 1, wherein the modulus of elasticity of the base covering material is set to 500 kgf/cm^2 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2289083A JP2903120B2 (en) | 1990-10-27 | 1990-10-27 | Concrete structure with salt damage protection layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2289083A JP2903120B2 (en) | 1990-10-27 | 1990-10-27 | Concrete structure with salt damage protection layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04164878A true JPH04164878A (en) | 1992-06-10 |
| JP2903120B2 JP2903120B2 (en) | 1999-06-07 |
Family
ID=17738606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2289083A Expired - Fee Related JP2903120B2 (en) | 1990-10-27 | 1990-10-27 | Concrete structure with salt damage protection layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2903120B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013184859A (en) * | 2012-03-08 | 2013-09-19 | Denki Kagaku Kogyo Kk | Surface treatment method after desalination treatment of concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52129739A (en) * | 1976-04-26 | 1977-10-31 | Shiyouzou Yabuhara | Plural layer patterned paint layer with flexibility |
-
1990
- 1990-10-27 JP JP2289083A patent/JP2903120B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52129739A (en) * | 1976-04-26 | 1977-10-31 | Shiyouzou Yabuhara | Plural layer patterned paint layer with flexibility |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013184859A (en) * | 2012-03-08 | 2013-09-19 | Denki Kagaku Kogyo Kk | Surface treatment method after desalination treatment of concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2903120B2 (en) | 1999-06-07 |
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