JP2001342048A - Coating material for concrete and repairing or protecting method of concrete surface - Google Patents
Coating material for concrete and repairing or protecting method of concrete surfaceInfo
- Publication number
- JP2001342048A JP2001342048A JP2000159504A JP2000159504A JP2001342048A JP 2001342048 A JP2001342048 A JP 2001342048A JP 2000159504 A JP2000159504 A JP 2000159504A JP 2000159504 A JP2000159504 A JP 2000159504A JP 2001342048 A JP2001342048 A JP 2001342048A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- coating material
- repairing
- protecting
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Paints Or Removers (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、劣化した或いは将
来劣化が予想される各種のコンクリート構造物やコンク
リート二次製品等のコンクリート表面の補修又は保護に
使用されるコンクリート用の塗布材、及び、その塗布材
を用いたコンクリート表面の補修又は保護方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete coating material used for repairing or protecting concrete surfaces such as various concrete structures and concrete secondary products that have deteriorated or are expected to deteriorate in the future, and The present invention relates to a method for repairing or protecting a concrete surface using the coating material.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
この種の塗布材としては、エポキシ系又はウレタン系塗
料が知られており、これらの塗料は、コンクリートの表
面を補修又は保護すべく、該表面に塗装されて使用され
ている。しかし、エポキシ系またはウレタン系塗料は、
二酸化炭素、水分および塩分などの有害物質の浸入や供
給を防止できるものの通気性が無いため、コンクリート
中に存在する余剰水の大気中への逸散を阻止し、水分が
コンクリート中に貯えられることになり、コンクリート
劣化の完全な防止策とはなり得ない。2. Description of the Related Art
Epoxy or urethane paints are known as this type of coating material, and these paints are used after being applied to the surface of concrete in order to repair or protect the surface. However, epoxy or urethane paints
Although it can prevent intrusion and supply of harmful substances such as carbon dioxide, water and salt, it does not have air permeability, so it prevents excess water existing in concrete from escaping to the atmosphere and water is stored in concrete. And cannot be a complete prevention measure for concrete deterioration.
【０００３】また、エポキシ系塗料では、耐候性が低い
ことから、太陽光線や大気にされされると劣化し、さら
に、ひび割れが発生した場合には、劣化によってひび割
れに対する追従性が低下し、発生したひび割れ部から二
酸化炭素、水分および塩分などの有害物質が浸入するこ
とになる。[0003] In addition, epoxy-based paints have low weather resistance, so they deteriorate when exposed to sunlight or the atmosphere. Further, when cracks occur, their ability to follow cracks is reduced due to the deterioration. Hazardous substances such as carbon dioxide, moisture and salt may enter from the cracked portion.
【０００４】一方、この種の塗布材としては、ポリマー
セメントモルタル系材料も使用されている。ポリマーセ
メントモルタル系材料は、上述したエポキシ系又はウレ
タン系塗料の如き問題が少なく、しかも、水系材料であ
るため作業性に優れている等の優れた性質を備えた好ま
しい材料である。しかしながら、従来のポリマーセメン
トモルタル系材料は、低温でのひび割れ追従性及び常温
でのコンクリートに対する付着強度の何れか一方に優れ
るものはあるものの、この双方に優れたものは、未だ開
発されておらず、例えば、日本道路公団コンクリート塗
装材の品質規格の低温（−２０℃）でのひび割れ追従性
試験及び２０℃標準状態での付着強度試験の何れか一方
しか満足せず、上記の品質規格を満足しないものであ
る。On the other hand, as this kind of coating material, a polymer cement mortar material is also used. The polymer cement mortar-based material is a preferable material having few problems such as the above-mentioned epoxy-based or urethane-based paint and having excellent properties such as excellent workability since it is a water-based material. However, although the conventional polymer cement mortar-based materials are excellent in either crack followability at low temperatures or adhesive strength to concrete at room temperature, materials excellent in both of them have not yet been developed. For example, only one of the quality compliance standards of the Japan Highway Public Corporation's concrete coating materials at a low temperature (−20 ° C.) and the adhesion strength test at a standard temperature of 20 ° C. are satisfied, and the above quality standards are satisfied. It does not.
【０００５】そこで、本発明は、上記従来の問題点に鑑
みなされたもので、水系材料として利点を備えつつ、低
温でのひび割れ追従性及び常温での付着強度の双方に優
れたコンクリート用の塗布材、並びに、それを用いたコ
ンクリート表面の補修及び保護方法を提供することを課
題とする。Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and has an advantage as a water-based material, and is excellent in both crack followability at low temperature and adhesion strength at room temperature. It is an object of the present invention to provide a material and a method for repairing and protecting a concrete surface using the same.
【０００６】[0006]
【課題を解決するための手段】本発明者は、上記課題を
解決すべく鋭意検討した結果、ガラス転移点が−５０〜
−２０℃のポリマーのディスパージョンの添加されたセ
メントモルタルが良好な常温での付着強度及び低温での
ひび割れ追従性を発現することを見出し、本発明を完成
するに至った。即ち、本発明は、セメントモルタル材料
に、ガラス転移温度が−５０〜−２０℃のアクリル系ポ
リマーのディスパージョンが添加されていることを特徴
とするコンクリート用の塗布材に係る（請求項１）。ま
た、前記セメントモルタル材料は、セメント１００重量
部に対し増量材が６０〜１２０重量部添加されてなり、
前記ディスパージョンは、前記セメントモルタル材料１
００重量部に対しポリマー固形分にして５０〜７５重量
部添加されている請求項１記載のコンクリート用の塗布
材に係る（請求項２）。The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that the glass transition point is -50 to -50.
The present inventors have found that a cement mortar to which a polymer dispersion at −20 ° C. has been added exhibits good adhesive strength at normal temperature and crack followability at low temperature, and has completed the present invention. That is, the present invention relates to an application material for concrete, wherein a dispersion of an acrylic polymer having a glass transition temperature of -50 to -20 ° C is added to a cement mortar material (Claim 1). . In addition, the cement mortar material, the filler is added 60 to 120 parts by weight with respect to 100 parts by weight of cement,
The dispersion comprises the cement mortar material 1
The coating material for concrete according to claim 1, wherein 50 to 75 parts by weight of polymer solid content is added to 00 parts by weight (claim 2).
【０００７】さらに、本発明は、請求項１又は２記載の
塗布材を、コンクリート表面に塗布することを特徴とす
るコンクリート表面の補修又は保護方法に係る（請求項
３）。また、鉄筋の劣化した又は劣化の恐れのあるコン
クリートのひび割れ部にひび割れ注入材を充填し、請求
項１又は２記載の塗布材を塗布することを特徴とするコ
ンクリート表面の補修又は保護方法に係る（請求項
４）。さらに、鉄筋の劣化した又は劣化の恐れのあるコ
ンクリートのひび割れ部にひび割れ注入材を充填し、次
いで、シラン又はシロキサン系化合物を塗布してコンク
リート中に含浸させた後、請求項１又は２記載の塗布材
を塗布することを特徴とするコンクリート表面の補修又
は保護方法に係る（請求項５）。また、鉄筋の劣化した
又は劣化の恐れのあるコンクリートのひび割れ部にひび
割れ注入材を注入し、次いで、防錆材を塗布して含浸さ
せた後、請求項１又は２記載の塗布材を塗布することを
特徴とするコンクリート表面の補修又は保護方法に係る
（請求項６）。Further, the present invention relates to a method for repairing or protecting a concrete surface, which comprises applying the coating material according to claim 1 or 2 to a concrete surface (claim 3). Further, the present invention relates to a method for repairing or protecting a concrete surface, characterized by filling a crack-injecting material into a cracked portion of concrete in which a reinforcing bar has deteriorated or is likely to deteriorate, and applying the coating material according to claim 1 or 2. (Claim 4). Furthermore, after filling the cracked portion of the concrete where the reinforcing steel has deteriorated or is likely to deteriorate with a crack injection material, and then impregnating the concrete by applying a silane or siloxane compound, the method according to claim 1 or 2. The present invention relates to a method for repairing or protecting a concrete surface, characterized by applying a coating material (claim 5). In addition, after injecting a crack injection material into a cracked portion of concrete in which the reinforcing bar has deteriorated or is likely to deteriorate, and then applying and impregnating a rust preventive material, the coating material according to claim 1 or 2 is applied. The present invention relates to a method for repairing or protecting a concrete surface characterized by the above-mentioned (Claim 6).
【０００８】[0008]
【発明の実施の形態】本発明のコンクリート用の塗布材
において、セメントモルタル材料とは、適量の水が混入
されてセメントモルタルとして使用されるもので、必要
に応じて種々の増量材がセメントに添加されてなる。こ
こで、増量材としては、珪砂、珪石粉、炭酸カルシウ
ム、パーライト、シリカパルーン等のフィラーの他、増
粘剤、消泡剤、顔料等を使用することができる。BEST MODE FOR CARRYING OUT THE INVENTION In the coating material for concrete of the present invention, the cement mortar material is a material in which an appropriate amount of water is mixed and used as a cement mortar. It is added. Here, as the filler, besides fillers such as silica sand, silica powder, calcium carbonate, pearlite, and silica paroon, a thickener, an antifoaming agent, a pigment, and the like can be used.
【０００９】また、本発明においては、ガラス転移温度
が−５０〜−２０℃のアクリル系ポリマーのディスパー
ジョンが使用される。ガラス転移温度が−２０℃より高
いものを用いたものは、常温でのひび割れ追従性に優れ
るが、低温、例えば、−２０℃以下でのひび割れ追従性
が急激に低下し、また、ガラス転移温度が−５０℃より
低いものを用いたものは付着強度が低く、例えば、付着
強度を１０ｋｇｆ／ｃｍ2以上とすることができない。In the present invention, an acrylic polymer dispersion having a glass transition temperature of -50 to -20 ° C is used. Those using a material having a glass transition temperature higher than -20 ° C are excellent in crack followability at room temperature, but have a sharp decrease in crack followability at low temperatures, for example, -20 ° C or lower, and have a glass transition temperature of However, those using a material having a temperature lower than −50 ° C. have a low adhesive strength, for example, the adhesive strength cannot be 10 kgf / cm 2 or more.
【００１０】アクリル系ポリマーとしては、エチルアク
リレート、ブチルアクリレート、２−エチルヘキシルア
クリレート等、重合したモノマーとしてアクリルモノマ
ーを含有するものを使用できる。これらは、単独又は２
種以上を混合して使用することもできる。As the acrylic polymer, those containing an acrylic monomer as a polymerized monomer, such as ethyl acrylate, butyl acrylate and 2-ethylhexyl acrylate, can be used. These can be used alone or 2
A mixture of more than one species can be used.
【００１１】本発明のコンクリート用の塗布材におい
て、前記セメントモルタル材料は、セメント１００重量
部に対し増量材が６０〜１２０重量部添加されてなり、
前記ディスパージョンは、前記セメントモルタル材料１
００重量部に対しポリマー固形分にして５０〜７５重量
部添加されているものが好ましい。ポリマーディスパー
ジョンの添加量を、固形分にして７５重量部より多くす
ると、塗布材の粘性が低下し、常温での付着強度が低下
すると供に施行後のダレが発生し易くなる。これに対
し、増粘剤を増加させることによってダレ防止を図るこ
とができるが、塗布材の硬化（成膜）を遅らせる結果と
なり好ましくない。また、ポリマーディスパージョンの
添加量を、固形分として５０重量部以下とすると、ひび
割れ追従性が低下する。In the coating material for concrete according to the present invention, the cement mortar material is obtained by adding a filler in an amount of 60 to 120 parts by weight to 100 parts by weight of cement.
The dispersion comprises the cement mortar material 1
It is preferable that 50 to 75 parts by weight of polymer solid content is added to 00 parts by weight. If the amount of the polymer dispersion added is more than 75 parts by weight in terms of solid content, the viscosity of the coating material will decrease, and if the adhesion strength at room temperature decreases, dripping after the treatment will easily occur. On the other hand, sagging can be prevented by increasing the thickener, but this results in delaying the curing (film formation) of the coating material, which is not preferable. Further, when the amount of the polymer dispersion added is 50 parts by weight or less as a solid content, crack followability is reduced.
【００１２】一方、上記構成からなる塗布材は、水系材
料としての利点を備えつつ、低温でのひび割れ追従性及
び常温での付着強度の双方に極めて優れ、日本道路公団
コンクリート塗装材の品質規格である「一般的な劣化に
適用するコンクリート塗装材の品質規格」、「塩害に適
用するコンクリート塗装材の品質規格」、「アルカリ骨
材反応に適用するコンクリート塗装材の品質規格」およ
び「凍害に適用するコンクリート塗装材の品質規格」に
基づく試験規格に全て適合するという利点を有する。On the other hand, the coating material having the above structure has the advantages of a water-based material, and is extremely excellent in both crack followability at low temperatures and adhesion strength at room temperature. Certain "quality standards of concrete coating materials applied to general deterioration", "quality standards of concrete coating materials applied to salt damage", "quality standards of concrete coating materials applied to alkali-aggregate reaction", and "applied to frost damage" It has the advantage that it conforms to all test standards based on "quality standards for concrete coating materials to be used".
【００１３】即ち、 塗膜の外観 標準養生後：塗膜は均一で流れ、むら、ふくれ、われ、
はがれのないこと。 促進耐候性試験後：白亜化がなく、塗膜にふくれ、わ
れ、はがれのないこと。 温冷繰り返し試験後：塗膜にふくれ、われ、はがれのな
いこと。 耐アルカリ性試験後：塗膜にふくれ、われ、はがれのな
いこと。 遮塩性：塗膜の塩素イオン透過量が１．０×１０−
３ｍｇ／ｃｍ2・日以下であること。 酸素透過阻止性：塗膜の酸素透過量が５．０×１０
−２ｍｇ／ｃｍ2・日以下であること。 水蒸気透過阻止性：塗膜の水蒸気透過量が５．０ｍ
ｇ／ｃｍ2・日以下であること。 中性化阻止性：中性化深さ１ｍｍ以下であること。 水透過阻止性：塗膜の水透過量が２０ｍｌ／ｍ2・日
以下であること。 コンクリートとの付着性：標準養生後、促進耐候性試
験後、温冷繰り返し試験後および耐アルカリ試験後にお
いて、塗膜とコンクリートとの付着強度が１０ｋｇｆ／
ｃｍ2以上であること。 ひび割れ追従性 標準養生後（常温時）：塗膜の伸びが０．８ｍｍ以上で
あること。 標準養生後（低温時）：塗膜の伸びが０．４ｍｍ以上で
あること。 促進耐候性試験後（常温時）：塗膜の伸びが０．４ｍｍ
以上であること。 凍結融解性：３００サイクルで耐久性指数が８０％以
上であること。 以上の性質にすべて合格している。That is, the appearance of the coating film After the standard curing: the coating film is uniform and flows, uneven, blistered, cracked,
No peeling. After the accelerated weathering test: No chalking, no blistering, cracking or peeling of the coating. After repeated hot and cold tests: no blistering, cracking, or peeling of coating film. After the alkali resistance test: No blistering, cracking, or peeling of the coating film. Salt barrier: Chloride ion transmission of coating film is 1.0 × 10−
3 mg / cm 2 · day or less. Oxygen permeation inhibiting property: The amount of oxygen permeation of the coating film is 5.0 × 10
-2 mg / cm 2 · day or less. Water vapor transmission inhibiting property: The water vapor transmission rate of the coating film is 5.0 m
g / cm 2 · day or less. Neutralization inhibitory property: Neutralization depth should be 1 mm or less. Water permeation inhibition: Water permeation of the coating film is 20 ml / m 2 · day or less. Adhesion to concrete: After standard curing, after accelerated weathering test, after repeated heating and cooling test, and after alkali resistance test, the adhesion between the coating film and concrete is 10 kgf /
cm 2 or more. Crack followability After standard curing (at room temperature): Elongation of coating film should be 0.8 mm or more. After standard curing (at low temperature): elongation of the coating film is 0.4 mm or more. After accelerated weathering test (at room temperature): elongation of coating film is 0.4 mm
That is all. Freeze-thaw property: Durability index is 80% or more after 300 cycles. All have passed the above properties.
【００１４】また、本発明のコンクリート表面の補修又
は保護方法は、請求項１又は２記載の塗布材をコンクリ
ート表面に塗布することを特徴とする。請求項１又は２
記載の塗布材を使用することから作業性に優れると共
に、該塗布材が塗布された部分（コンクリート表面）
は、該塗布材に被覆されて補修又は保護されることにな
るため、上記方法によれば、補修又は保護された部分の
コンクリートに万一ひび割れが発生しても、塗布材は低
温でもひび割れが発生し難く、しかも、塗布材が剥離す
る恐れも減少する。特に、塗布材が請求項２記載の塗布
材の場合には、日本道路公団の品質規格を満足するよう
に、コンクリート表面を補修又は保護することができ
る。Further, a method for repairing or protecting a concrete surface according to the present invention is characterized in that the coating material according to claim 1 or 2 is applied to the concrete surface. Claim 1 or 2
The workability is excellent because the described coating material is used, and the portion where the coating material is applied (concrete surface)
Is to be repaired or protected by being coated with the coating material.According to the above method, even if cracks occur in the repaired or protected portion of the concrete, even if the coating material is cracked even at low temperatures, It is unlikely to occur, and the risk of peeling of the coating material is reduced. In particular, when the coating material is the coating material described in claim 2, the concrete surface can be repaired or protected so as to satisfy the quality standard of the Japan Highway Public Corporation.
【００１５】コンクリートに、鉄筋の劣化した又は劣化
の恐れのあるひび割れ部がある場合には、該ひび割れ部
に注入材を充填した後に、請求項１又は２記載の塗布材
を塗布することが好ましい。注入材としては、エポキシ
樹脂やポリマーセメントスラリーなどのひび割れ注入材
を使用することができる。In the case where the concrete has a cracked portion in which the reinforcing steel is deteriorated or may be deteriorated, it is preferable to apply the coating material according to claim 1 after filling the cracked portion with the injection material. . As the injection material, a crack injection material such as an epoxy resin or a polymer cement slurry can be used.
【００１６】特に、注入材を充填した後、請求項１又は
２記載の塗布材を塗布する前に、シラン又はシロキサン
系化合物を塗布してコンクリート中に該化合物を含浸さ
せることもできる。In particular, it is also possible to apply a silane or siloxane compound to impregnate concrete into the concrete after filling the filling material and before applying the coating material according to claim 1 or 2.
【００１７】シラン又はシロキサン系化合物は、表面か
らコンクリート中への塩素イオンと水分の侵入を防止す
ると共に、コンクリート中に含まれている水分が水蒸気
となって外気に逸散するのを阻害しない性質、即ち、遮
塩性、防水性及び水蒸気の通気性を兼ね備えていること
から、補修等をした後に、コンクリート中に塩素イオン
及び水分の侵入を防止でき、しかも、コンクリート中の
水分を逸散されないという恐れも減少する。The silane or siloxane compound has a property of preventing chlorine ions and moisture from entering the concrete from the surface and preventing the moisture contained in the concrete from being converted into water vapor and escaping to the outside air. In other words, since it has both salt barrier properties, waterproofness, and water vapor permeability, after repairs and the like, it is possible to prevent chlorine ions and moisture from entering the concrete, and moreover, moisture in the concrete is not dissipated. Fear is reduced.
【００１８】また、注入材を充填した後、請求項１又は
２記載の塗布材を塗布する前に、防錆材を塗布して含浸
させることもできる。防錆材を塗布して含浸させること
により、鉄筋に発生している錆を健全にし、その表面に
前記塗布材を塗布することにより、コンクリート内部は
外部環境から遮断され、防錆材の効果、即ち錆防止効果
を持続させることができる。Further, after filling the injection material and before applying the coating material according to the first or second aspect, a rust preventive material may be applied and impregnated. By applying and impregnating a rust preventive material, the rust generated on the reinforcing bar is made sound, and by applying the above-mentioned coating material on the surface, the inside of the concrete is shut off from the external environment, and the effect of the rust preventive material, That is, the rust prevention effect can be maintained.
【００１９】[0019]
【実施例】以下、本発明の実施例を掲げて説明する。実施例１〜７、比較例１〜３ 下記表１に示す割合で混合して実施例１〜７、比較例１
〜３の供試体を調整し、該供試体を用いて日本道路公団
コンクリート塗装材の品質規格の試験方法に従って試験
を実施した。試験結果を表２に示す。Embodiments of the present invention will be described below. Examples 1 to 7, Comparative Examples 1 to 3 Examples 1 to 7 and Comparative Example 1 were mixed at the ratios shown in Table 1 below.
The specimens of Nos. 1 to 3 were prepared, and a test was performed using the specimens in accordance with the test method of the quality standard of the Japan Highway Public Corporation concrete coating material. Table 2 shows the test results.
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【表２】 [Table 2]
【００２２】表２から明らかなように、実施例１〜７に
ついては、ゼロスパン伸び（ひび割れ追従性の試験にお
ける塗膜のゼロスパン伸び）及びコンクリートに対する
付着強度の双方がバランス良く向上している。特に、実
施例１〜５については、ゼロスパン伸び（ひび割れ追従
性の試験における塗膜のゼロスパン伸び）およびコンク
リートに対する付着強度とも品質規格を満足する結果が
得られた。As is clear from Table 2, in Examples 1 to 7, both the zero-span elongation (the zero-span elongation of the coating film in the test for crack followability) and the adhesion strength to concrete are improved in a well-balanced manner. In particular, in Examples 1 to 5, the results satisfying the quality standards in both the zero-span elongation (the zero-span elongation of the coating film in the test for crack followability) and the adhesive strength to concrete were obtained.
【００２３】一方、Ｔｇが５℃のポリマーディスパージ
ョンを使用した比較例２では、コンクリートに対する付
着強度は高いが、ゼロスパン伸びは規格を満足しないこ
とが認められる。また、Ｔｇが−６０℃のポリマーディ
スパージョンを使用した比較例１及び３では、ゼロスパ
ン伸びは十分であるが、付着強度は規格を満足しないこ
とが認められる。On the other hand, in Comparative Example 2 using a polymer dispersion having a Tg of 5 ° C., it is recognized that the adhesive strength to concrete is high, but the zero span elongation does not satisfy the specifications. In Comparative Examples 1 and 3 using a polymer dispersion having a Tg of −60 ° C., it is recognized that the zero-span elongation is sufficient, but the adhesion strength does not satisfy the standard.
【００２４】[0024]
【発明の効果】以上のように、本発明のコンクリート用
の塗布材は、水系材料として利点を備えつつ、低温での
ひび割れ追従性及び常温での付着強度の双方に優れてい
る。また、本発明のコンクリート表面の補修又は保護方
法によれば、劣化した又は将来劣化が予想されるコンク
リート構造物の表面を、低温でのひび割れ追従性及び常
温での付着強度の双方に優れた塗布材によって補修又は
保護することができる。As described above, the coating material for concrete of the present invention has advantages as a water-based material, and is excellent in both crack followability at low temperatures and adhesion strength at room temperature. Further, according to the method for repairing or protecting a concrete surface of the present invention, a surface of a concrete structure that has deteriorated or is expected to deteriorate in the future is excellent in both crack followability at low temperature and adhesion strength at room temperature. The material can be repaired or protected.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｅ０４Ｇ 23/02 Ｅ０４Ｇ 23/02 Ａ // Ｃ０４Ｂ 103:65 Ｃ０４Ｂ 103:65 111:70 111:70 (72)発明者 大崎 敬一 大阪市大正区南恩加島７丁目１番55号 住 友大阪セメント株式会社セメント・コンク リート研究所内 (72)発明者 榊原 弘幸 大阪市大正区南恩加島７丁目１番55号 住 友大阪セメント株式会社セメント・コンク リート研究所内 Ｆターム(参考） 2E176 AA01 BB04 BB11 4D075 AE03 CA03 CA13 CA32 CA33 CA38 CA40 CA42 CA47 DA23 DA27 DB12 DC05 EA06 EB03 EB22 EB53 EB56 EC13 EC54 4G012 MC01 PA04 PA07 PB31 PB40 PB41 4G028 CA01 CB04 CC01 CD01 4J038 CG001 CG141 CH031 CH041 HA286 HA436 HA496 HA556 MA08 MA10 MA13 NA01 PB05 PB12 PC04 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) E04G 23/02 E04G 23/02 A // C04B 103: 65 C04B 103: 65 111: 70 111: 70 (72) Inventor Keiichi Osaki 7-55 Minamienkajima, Taisho-ku, Osaka Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory (72) Inventor Hiroyuki Sakakibara 7-55 Minamienkajima, Taisho-ku, Osaka Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory F-term (reference) 2E176 AA01 BB04 BB11 4D075 AE03 CA03 CA13 CA32 CA33 CA38 CA40 CA42 CA47 DA23 DA27 DB12 DC05 EA06 EB03 EB22 EB53 EB56 EC13 EC54 4G012 MC01 PA04 PA07 PB31 PB40 CC01 CD01 4J038 CG001 CG141 CH031 CH041 HA286 HA436 HA496 HA556 MA08 MA10 MA13 NA01 PB05 PB12 PC04
Claims (6)
度が−５０〜−２０℃のアクリル系ポリマーのディスパ
ージョンが添加されていることを特徴とするコンクリー
ト用の塗布材。1. An application material for concrete, wherein an acrylic polymer dispersion having a glass transition temperature of −50 to −20 ° C. is added to a cement mortar material.
１００重量部に対し増量材が６０〜１２０重量部添加さ
れてなり、前記ディスパージョンは、前記セメントモル
タル材料１００重量部に対しポリマー固形分にして５０
〜７５重量部添加されている請求項１記載のコンクリー
ト用の塗布材。2. The cement mortar material is obtained by adding a filler in an amount of 60 to 120 parts by weight with respect to 100 parts by weight of cement.
The coating material for concrete according to claim 1, which is added in an amount of about 75 parts by weight.
リート表面に塗布することを特徴とするコンクリート表
面の補修又は保護方法。3. A method for repairing or protecting a concrete surface, comprising applying the application material according to claim 1 to a concrete surface.
ンクリートのひび割れ部に、ひび割れ注入材を充填し、
請求項１又は２記載の塗布材を塗布することを特徴とす
るコンクリート表面の補修又は保護方法。4. A crack-injecting material is filled into a cracked portion of concrete in which rebar has deteriorated or is likely to deteriorate,
A method for repairing or protecting a concrete surface, comprising applying the coating material according to claim 1.
ンクリートのひび割れ部に、ひび割れ注入材を充填し、
次いで、シラン又はシロキサン系化合物を塗布してコン
クリート中に含浸させた後、請求項１又は２記載の塗布
材を塗布することを特徴とするコンクリート表面の補修
又は保護方法。5. A crack-injecting material is filled in a cracked portion of concrete in which rebar has deteriorated or is likely to deteriorate,
3. A method for repairing or protecting a concrete surface, comprising applying a silane or siloxane compound to impregnate concrete and then applying the coating material according to claim 1 or 2.
ンクリートのひび割れ部にひび割れ注入材を注入し、次
いで、防錆材を塗布して含浸させた後、請求項１又は２
記載の塗布材を塗布することを特徴とするコンクリート
表面の補修又は保護方法。6. A crack-injecting material is injected into a cracked portion of concrete in which rebar has deteriorated or is likely to deteriorate, and then a rust preventive material is applied and impregnated, and then impregnated.
A method for repairing or protecting a concrete surface, which comprises applying the coating material described in the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000159504A JP2001342048A (en) | 2000-05-30 | 2000-05-30 | Coating material for concrete and repairing or protecting method of concrete surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000159504A JP2001342048A (en) | 2000-05-30 | 2000-05-30 | Coating material for concrete and repairing or protecting method of concrete surface |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010020388A Division JP2010143824A (en) | 2010-02-01 | 2010-02-01 | Coating material for concrete, and method for repairing or protecting concrete surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001342048A true JP2001342048A (en) | 2001-12-11 |
Family
ID=18663816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000159504A Pending JP2001342048A (en) | 2000-05-30 | 2000-05-30 | Coating material for concrete and repairing or protecting method of concrete surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001342048A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003044112A1 (en) * | 2001-10-12 | 2003-05-30 | Shinji Yokota | Coating, bag or molded article coated with the coating and coating method |
| JP2006248879A (en) * | 2005-03-14 | 2006-09-21 | Sumitomo Osaka Cement Co Ltd | Polymer cement-based coating material for concrete surface and its working method |
| JP2007269536A (en) * | 2006-03-31 | 2007-10-18 | Sumitomo Osaka Cement Co Ltd | Inorganic and elastic crack injection material |
| JP2011073932A (en) * | 2009-09-30 | 2011-04-14 | Sumitomo Osaka Cement Co Ltd | Concrete degradation preventive surface coating method |
| JP2012091985A (en) * | 2010-10-28 | 2012-05-17 | Sumitomo Osaka Cement Co Ltd | Repair method for concrete structure |
| CN105884243A (en) * | 2014-09-03 | 2016-08-24 | 安徽皖科新科技发展有限公司 | Concrete enhancer and preparation and application method thereof |
| CN108793905A (en) * | 2018-07-24 | 2018-11-13 | 北京市燕通建筑构件有限公司 | A kind of mending mortar and preparation method thereof and the application in precast concrete repairing |
| JP2019210699A (en) * | 2018-06-05 | 2019-12-12 | 積水化学工業株式会社 | Repair member and repair method for concrete structure |
| JP2021008785A (en) * | 2019-07-02 | 2021-01-28 | 積水化学工業株式会社 | Repair member and repair method for concrete structure |
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| JPS62288181A (en) * | 1986-06-09 | 1987-12-15 | 五洋建設株式会社 | Coating material for concrete |
| JPH01167288A (en) * | 1987-12-24 | 1989-06-30 | Mitsubishi Mining & Cement Co Ltd | Regeneration of deteriorated concrete |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003044112A1 (en) * | 2001-10-12 | 2003-05-30 | Shinji Yokota | Coating, bag or molded article coated with the coating and coating method |
| JP2006248879A (en) * | 2005-03-14 | 2006-09-21 | Sumitomo Osaka Cement Co Ltd | Polymer cement-based coating material for concrete surface and its working method |
| JP4643318B2 (en) * | 2005-03-14 | 2011-03-02 | 住友大阪セメント株式会社 | Polymer cement concrete surface coating material and its construction method |
| JP2007269536A (en) * | 2006-03-31 | 2007-10-18 | Sumitomo Osaka Cement Co Ltd | Inorganic and elastic crack injection material |
| JP4709676B2 (en) * | 2006-03-31 | 2011-06-22 | 住友大阪セメント株式会社 | Inorganic elastic crack injection material |
| JP2011073932A (en) * | 2009-09-30 | 2011-04-14 | Sumitomo Osaka Cement Co Ltd | Concrete degradation preventive surface coating method |
| JP2012091985A (en) * | 2010-10-28 | 2012-05-17 | Sumitomo Osaka Cement Co Ltd | Repair method for concrete structure |
| CN105884243A (en) * | 2014-09-03 | 2016-08-24 | 安徽皖科新科技发展有限公司 | Concrete enhancer and preparation and application method thereof |
| JP2019210699A (en) * | 2018-06-05 | 2019-12-12 | 積水化学工業株式会社 | Repair member and repair method for concrete structure |
| JP7144199B2 (en) | 2018-06-05 | 2022-09-29 | 積水化学工業株式会社 | REPAIR MEMBER AND REPAIR METHOD FOR CONCRETE STRUCTURE |
| CN108793905A (en) * | 2018-07-24 | 2018-11-13 | 北京市燕通建筑构件有限公司 | A kind of mending mortar and preparation method thereof and the application in precast concrete repairing |
| JP2021008785A (en) * | 2019-07-02 | 2021-01-28 | 積水化学工業株式会社 | Repair member and repair method for concrete structure |
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