JP2010084454A - Construction method of repair of crack concrete structure using undercoating material - Google Patents
Construction method of repair of crack concrete structure using undercoating material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 21
- 230000008439 repair process Effects 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 title abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000003822 epoxy resin Substances 0.000 claims abstract description 19
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 19
- 239000006185 dispersion Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000003566 sealing material Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 13
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 6
- 229920002050 silicone resin Polymers 0.000 claims description 6
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 6
- 229920006026 co-polymeric resin Polymers 0.000 claims description 5
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 3
- 229920006243 acrylic copolymer Polymers 0.000 claims description 3
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 239000000243 solution Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000004570 mortar (masonry) Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 229920002472 Starch Polymers 0.000 description 5
- 235000019698 starch Nutrition 0.000 description 5
- 239000008107 starch Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000002845 discoloration Methods 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000004908 Emulsion polymer Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- ONQAPBOHQCUFGD-UHFFFAOYSA-N dodecyl ethyl sulfate ethanol Chemical compound S(=O)(=O)(OCCCCCCCCCCCC)OCC.C(C)O.C(C)O ONQAPBOHQCUFGD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Abstract
Description
本発明は、エポキシ樹脂、変性アクリレート樹脂、ウレタン樹脂等の硬化性樹脂を注入施工してコンクリート構造物に生じたひび割れを補修する補修方法において、施工終了後にコンクリートの外観を損なうことなく、施工時の密着性と施工終了後の易はく離性を加味したコンクリート構造物のひび割れ補修工法に関する。 The present invention is a repair method for repairing cracks generated in a concrete structure by injecting a curable resin such as an epoxy resin, a modified acrylate resin, and a urethane resin. The present invention relates to a method for repairing cracks in concrete structures that take into account the adhesion of the steel and the ease of peeling after completion of construction.
コンクリート構造物は経年劣化によりひび割れが生じるため、このひび割れを補修するためにシリンダーなどの注入器具を使ってエポキシ樹脂等の低圧注入を行うコンクリート構造物のひび割れ補修方法が知られている（特許文献１、２）。 Since cracks occur in concrete structures due to deterioration over time, there is a known crack repair method for concrete structures in which low pressure injection of epoxy resin or the like is performed using an injection device such as a cylinder in order to repair the cracks (Patent Literature). 1, 2).
このようなひび割れ補修方法においては、注入されるエポキシ樹脂等が漏洩することを防止するために、変成シリコーン系樹脂（特許文献３）やウレタン系樹脂（特許文献４）などを主成分とした封止材が用いられる。また、この封止材は注入器具を取り付ける注入口付き座金を固定するための接着剤の役割も兼ねることがある。
ひび割れ部分の封止に使用される材料は注入の際は漏れがなく、施工後のコンクリートの外観を損傷することなく容易に撤去できることが好ましい。すなわち、コンクリート表面への十分な密着性（注入作業時）と、容易にはく離できる易はく離性（施工作業終了後）という相反する性能が要求されるのである。
In such a crack repairing method, in order to prevent leakage of the injected epoxy resin or the like, a seal mainly composed of a modified silicone resin (Patent Document 3) or a urethane resin (Patent Document 4) is used. A stop material is used. Moreover, this sealing material may also serve as an adhesive for fixing a washer with an injection port to which an injection device is attached.
It is preferable that the material used for sealing the cracked portion does not leak during injection and can be easily removed without damaging the appearance of the concrete after construction. That is, it is required to have contradictory performances such as sufficient adhesion to the concrete surface (at the time of pouring work) and easy peeling that can be easily peeled off (after completion of construction work).
このため、種々の提案がなされており、なかでも封止材を施工する前に施工予定のコンクリート表面に前処理材を塗布する方法が知られている。
このような前処理材としては、例えば、ラウリル硫酸ナトリウム、ラウリル硫酸トリエタノール及びラノリンを主成分とするもの（特許文献５）や、デンプン系水溶性高分子を用いるもの（特許文献６）が知られている。
For this reason, various proposals have been made, and in particular, a method of applying a pretreatment material to a concrete surface to be constructed before constructing a sealing material is known.
Examples of such pretreatment materials include those containing sodium lauryl sulfate, triethanol lauryl sulfate and lanolin as main components (Patent Document 5), and those using starch-based water-soluble polymers (Patent Document 6). It has been.
しかしながら、上記の従来技術では、封止材の種類によっては下塗り材と過剰に接着して逆に撤去が困難になったり、或いは封止材の撤去が容易になっても下地面との接着力が極度に低下してしまい、注入時に注入されるエポキシ樹脂等が漏洩してしまうといった問題があり、不十分なものであった。 However, in the above prior art, depending on the type of the sealing material, it may be excessively adhered to the undercoat material, making it difficult to remove, or even if the sealing material can be easily removed, the adhesive strength to the base surface However, there is a problem that the epoxy resin or the like injected at the time of injection leaks, which is insufficient.
本発明は、封止材の種類にかかわらず、施工終了後にコンクリートの外観を損なうことなく、施工時の密着性と施工終了後の易はく離性を加味したコンクリート構造物のひび割れ補修工法を提供することを目的とするものである。 The present invention provides a crack repair method for a concrete structure that takes into account the adhesion at the time of construction and easy peelability after the completion of construction, without impairing the appearance of the concrete after the construction, regardless of the type of sealing material. It is for the purpose.
そこで、発明者らは上述の問題を解決するために鋭意研究した結果、特定の水系処理剤を補修箇所に塗布しておくことで、封止材の種類にかかわらず、封止材の易はく離性だけでなくコンクリート表面の汚染性も大幅に改善できることを見いだして、本発明を完成させるに至った。本発明は次の第１〜５の発明から構成される。 Therefore, as a result of diligent research to solve the above-mentioned problems, the inventors applied a specific aqueous treatment agent to the repair site, so that the sealing material can be easily separated regardless of the type of the sealing material. As a result, it was found that not only the property but also the contamination property of the concrete surface can be greatly improved, and the present invention has been completed. The present invention is composed of the following first to fifth inventions.
すなわち、第１の発明は、以下の工程１〜４を具備するコンクリート構造物のひび割れ補修方法であって、水系下塗り材が皮膜形成性樹脂分散液であることを特徴とするコンクリート構造物のひび割れ補修方法に関するものである。
工程１：水系下塗り材を補修すべきひび割れ部位のコンクリート表面に塗布する工程。
工程２：補修すべきひび割れ部位上に、注入口付き座金を取り付ける工程。
工程３：水系下塗り材を塗布したコンクリート表面に、注入されるエポキシ樹脂等の硬化性樹脂が漏洩することを防止する封止材を施工する工程。
工程４：注入口付き座金を介してひび割れ部位内部にエポキシ樹脂等の硬化性樹脂を注入する工程。
水系下塗り材が皮膜形成性を有する樹脂分散液であることによって、コンクリート表面に下塗り材塗膜が形成され、これに封止材が密着することによって密着性が発揮される。一方で、封止材の撤去時には形成された下塗り材塗膜ごとコンクリート表面から撤去されるため、易はく離性とコンクリート表面の汚染性の改善が得られる。
That is, the first invention is a method for repairing a crack in a concrete structure comprising the following steps 1 to 4, wherein the water-based primer is a film-forming resin dispersion: It relates to repair methods.
Process 1: The process of apply | coating the water-system undercoat material to the concrete surface of the crack site | part which should be repaired.
Process 2: The process of attaching a washer with an inlet on the crack site to be repaired.
Step 3: A step of applying a sealing material that prevents leakage of a curable resin such as an injected epoxy resin on a concrete surface to which a water-based primer is applied.
Step 4: A step of injecting a curable resin such as an epoxy resin into the cracked portion through a washer with an injection port.
When the water-based undercoat material is a resin dispersion having film-forming properties, an undercoat material coating film is formed on the concrete surface, and adhesion is exhibited when the sealing material is in close contact with this. On the other hand, since the entire undercoat coating film formed when the sealing material is removed is removed from the concrete surface, easy peeling and improvement of the soiling property of the concrete surface can be obtained.
第２の発明は、水系下塗り材が、エマルジョン系、ディスパージョン系又はラテックス系の皮膜形成性樹脂分散液であることを特徴とする、第１の発明に係るコンクリート構造物のひび割れ補修方法である。
水系下塗り材中において、樹脂はエマルジョン、ディスパージョン又はラテックスの状態で水系に分散して存在していることが好ましい。
The second invention is a method for repairing cracks in a concrete structure according to the first invention, characterized in that the water-based primer is an emulsion-based, dispersion-based or latex-based film-forming resin dispersion. .
In the aqueous undercoat material, the resin is preferably present in the form of an emulsion, dispersion or latex dispersed in the aqueous system.
第３の発明は、水系下塗り材が、酢酸ビニル樹脂、酢酸ビニル−アクリル共重合樹脂、エチレン−酢酸ビニル共重合樹脂、アクリル樹脂、ウレタン樹脂、エポキシ樹脂、スチレン−アクリル共重合樹脂、スチレン−ブタジエン共重合樹脂又は天然ゴム系を主成分とする皮膜形成性樹脂分散液であることを特徴とする、第１又は第２の発明に係るコンクリート構造物のひび割れ補修方法である。 In the third invention, the water-based undercoat material is a vinyl acetate resin, vinyl acetate-acrylic copolymer resin, ethylene-vinyl acetate copolymer resin, acrylic resin, urethane resin, epoxy resin, styrene-acrylic copolymer resin, styrene-butadiene. A method for repairing a crack in a concrete structure according to the first or second invention, characterized in that it is a film-forming resin dispersion mainly composed of a copolymer resin or a natural rubber.
第４の発明は、水系下塗り材の固形分が１〜６０％であることを特徴とする、第１〜第３のいずれかの発明に係るコンクリート構造物のひび割れ補修方法である。 A fourth invention is a crack repairing method for a concrete structure according to any one of the first to third inventions, wherein the solid content of the water-based undercoat material is 1 to 60%.
第５の発明は、封止材が変成シリコーン樹脂、ウレタン樹脂、エポキシ樹脂、アクリル樹脂、シリル化ウレタン樹脂、セメントモルタル系組成物又はホットメルト樹脂であることを特徴とする、第１〜第４のいずれかの発明に係るコンクリート構造物のひび割れ補修方法である。 According to a fifth invention, the sealing material is a modified silicone resin, a urethane resin, an epoxy resin, an acrylic resin, a silylated urethane resin, a cement mortar composition, or a hot melt resin. It is the crack repair method of the concrete structure which concerns on either of these inventions.
本発明に係るコンクリート構造物のひび割れ補修方法は、封止材の種類にかかわらず、施工終了後にコンクリートの外観を損なうことなく、施工時の密着性と施工終了後の易はく離性が得られるという効果を奏する。 Regardless of the type of sealing material, the crack repair method for a concrete structure according to the present invention can provide adhesion at the time of construction and easy peeling after the construction without damaging the appearance of the concrete after the construction. There is an effect.
以下、本発明の実施の形態を、詳細に説明する。なお、本発明はこれらの例示にのみ限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変更を加え得ることは勿論である。 Hereinafter, embodiments of the present invention will be described in detail. In addition, this invention is not limited only to these illustrations, Of course, a various change can be added in the range which does not deviate from the summary of this invention.
［ひび割れ補修方法について］
本発明におけるひび割れ補修方法について説明する。
本発明におけるひび割れ補修方法は、以下の工程１〜４を具備するとともに、用いられる水系下塗り材が皮膜形成性樹脂分散液であることを特徴とするものである。
工程１：水系下塗り材を補修すべきひび割れ部位のコンクリート表面に塗布する工程。
工程２：補修すべきひび割れ部位上に、注入口付き座金を取り付ける工程。
工程３：水系下塗り材を塗布したコンクリート表面に、注入されるエポキシ樹脂等の硬化性樹脂が漏洩することを防止する封止材を施工する工程。
工程４：注入口付き座金を介してひび割れ部位内部にエポキシ樹脂等の硬化性樹脂を注入する工程。
[How to repair cracks]
The crack repairing method in the present invention will be described.
The crack repairing method according to the present invention comprises the following steps 1 to 4, and the aqueous undercoat used is a film-forming resin dispersion.
Process 1: The process of apply | coating the water-system undercoat material to the concrete surface of the crack site | part which should be repaired.
Process 2: The process of attaching a washer with an inlet on the crack site to be repaired.
Step 3: A step of applying a sealing material that prevents leakage of a curable resin such as an injected epoxy resin on a concrete surface to which a water-based primer is applied.
Step 4: A step of injecting a curable resin such as an epoxy resin into the cracked portion through a washer with an injection port.
工程１では、水系下塗り材が補修すべきひび割れ部位のコンクリート表面に塗布される。この水系下塗り材は後述するように皮膜形成樹脂分散液からなるため、ひび割れ部位、すなわち、工程３において封止材が施工される部位に塗膜（皮膜）が形成される。この塗膜に後の工程で施工される封止材が密着することによって密着性が発揮される。一方で、封止材の撤去時には形成された下塗り材塗膜ごとコンクリート表面から撤去されるので、易はく離性が得られる。さらに、形成された下塗り材塗膜は封止材からコンクリート表面に対して低分子量化合物などが移行することも防止するため、コンクリート表面の汚染性の改善が得られる。 In step 1, an aqueous primer is applied to the concrete surface at the crack site to be repaired. Since this water-based undercoat is made of a film-forming resin dispersion as will be described later, a coating film (film) is formed at a cracked part, that is, a part where the sealing material is applied in Step 3. Adhesiveness is exhibited when a sealing material applied in a later step is in close contact with this coating film. On the other hand, when the sealing material is removed, since the entire undercoat coating film formed is removed from the concrete surface, easy peeling is obtained. Furthermore, since the formed undercoat coating film also prevents migration of low molecular weight compounds and the like from the sealing material to the concrete surface, it is possible to improve the contamination of the concrete surface.
工程２〜４は、従来公知の方法により行われる。ここで、工程２と３については、座金の取り付け用接着剤と封止材とを兼用することによって同時に行ってもよい。また、注入される硬化性樹脂としては、エポキシ樹脂、変性アクリレート樹脂、ウレタン樹脂等の従来公知の樹脂を用いればよい。 Steps 2 to 4 are performed by a conventionally known method. Here, steps 2 and 3 may be performed simultaneously by using both the washer mounting adhesive and the sealing material. In addition, as the curable resin to be injected, a conventionally known resin such as an epoxy resin, a modified acrylate resin, or a urethane resin may be used.
［水系下塗り材について］
本発明における水系下塗り材について説明する。
本発明における水系下塗り材は皮膜形成性樹脂分散液である。本発明において皮膜形成性樹脂分散液とは、水を分散媒体として樹脂が分散した状態のものである。特にこれらの樹脂がエマルジョン、ディスパージョン又はラテックスの状態で水系に分散して存在していることが好ましく、特にエマルジョンであることが好ましい。
水系下塗り材は最適な水の量で希釈することで、塗布方法も刷毛塗り以外にローラー、スプレー等、各種の方法を自由に採用でき、容易に施工・塗布することが可能である。
これら樹脂分散液が好ましい理由としては定かではないが、水中に分散した樹脂がある程度の粒子径を有していることによって、コンクリート表面に塗布した際にコンクリート内部に樹脂が浸透することが防止され、効率的に塗膜を形成できることによるものと推察される。
また、水系下塗り材の固形分は１〜６０％、好ましくは５〜２０％である。固形分が１％を下回ると塗膜を形成するために塗布量を増やさなければならず作業が繁雑になる。また、６０％を上回ると下塗り材の粘度が高くなり塗布作業性が低下する。
[Water-based primer]
The water-based undercoat material in the present invention will be described.
The water-based undercoat material in the present invention is a film-forming resin dispersion. In the present invention, the film-forming resin dispersion is a state in which a resin is dispersed using water as a dispersion medium. In particular, these resins are preferably present in the form of an emulsion, dispersion or latex dispersed in an aqueous system, and particularly preferably an emulsion.
By diluting the water-based undercoating material with an optimal amount of water, various methods such as roller and spraying can be freely adopted in addition to brush coating, and construction and coating can be easily performed.
Although it is not clear why these resin dispersions are preferable, the resin dispersed in water has a certain particle size, which prevents the resin from penetrating into the concrete when applied to the concrete surface. This is presumably due to the ability to efficiently form a coating film.
The solid content of the water-based undercoat material is 1 to 60%, preferably 5 to 20%. If the solid content is less than 1%, the coating amount must be increased in order to form a coating film, and the work becomes complicated. On the other hand, if it exceeds 60%, the viscosity of the undercoat becomes high and the coating workability decreases.
［水系下塗り材の主成分について］
本発明における水系下塗り剤は、酢酸ビニル樹脂、酢酸ビニル−アクリル共重合樹脂、エチレン−酢酸ビニル共重合樹脂、アクリル樹脂、ウレタン樹脂、エポキシ樹脂、スチレン−アクリル共重合樹脂、スチレン−ブタジエン共重合樹脂又は天然ゴム系を主成分とするものである。なかでも、エチレン−酢酸ビニル共重合樹脂、スチレン−アクリル共重合樹脂であることが施工性およびコンクリート表面の汚染性の点から特に好ましい。
[Main components of water-based primer]
The water-based undercoat in the present invention is a vinyl acetate resin, vinyl acetate-acrylic copolymer resin, ethylene-vinyl acetate copolymer resin, acrylic resin, urethane resin, epoxy resin, styrene-acrylic copolymer resin, styrene-butadiene copolymer resin. Or it has a natural rubber system as a main component. Of these, ethylene-vinyl acetate copolymer resin and styrene-acrylic copolymer resin are particularly preferable from the viewpoints of workability and contamination of the concrete surface.
［封止材について］
本発明における封止材は、変成シリコーン樹脂、ウレタン樹脂、エポキシ樹脂、アクリル樹脂、シリル化ウレタン樹脂、セメントモルタル系組成物又はホットメルト樹脂である。なかでも、変成シリコーン樹脂であることが漏洩防止性および易はく離性のバランスの点から特に好ましい。
[About sealing material]
The sealing material in the present invention is a modified silicone resin, urethane resin, epoxy resin, acrylic resin, silylated urethane resin, cement mortar composition, or hot melt resin. Among these, a modified silicone resin is particularly preferable from the viewpoint of the balance between leakage prevention properties and easy release properties.
以下、本発明を実施例に基づいて詳細に説明するが、本発明は実施例に限定されるわけではない。 EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not necessarily limited to an Example.
［実施例］
・はく離強さの測定
ＩＳＯモルタルに水系下塗り剤としてスチレン−アクリル共重合エマルジョンあるいはエチレン−酢酸ビニル共重合エマルジョン（ともに固形分１０％）を塗布した。水分が乾燥したことを確認してから、変成シリコーン系樹脂を主成分とする封止材を厚さ３ｍｍ、幅２５ｍｍで塗布した。封止材を２０℃相対湿度６５％で２４時間硬化させた後、株式会社島津製作所製オートグラフにて引張速度３００ｍｍ／ｍｉｎで、封止材皮膜を下地モルタルに対して９０°方向にはく離するときのはく離強さを測定した。
[Example]
-Measurement of peel strength A styrene-acrylic copolymer emulsion or ethylene-vinyl acetate copolymer emulsion (both solid content 10%) was applied to ISO mortar as an aqueous primer. After confirming that the moisture was dried, a sealing material mainly composed of a modified silicone resin was applied in a thickness of 3 mm and a width of 25 mm. After the sealing material is cured for 24 hours at 20 ° C. and a relative humidity of 65%, the sealing material film is peeled in the 90 ° direction with respect to the base mortar at a tensile speed of 300 mm / min by an autograph manufactured by Shimadzu Corporation. The peel strength was measured.
・評価
はく離性能の評価は以下のＡ〜Ｇの７段階の評価基準で行った。標準的な状態は評価基準Ｄであり、実用上問題がないレベルは評価基準Ｃ、Ｄ、Ｅである。
Ａ：はく離強さ５Ｎ／ｍｍ未満。封止材が容易にはく離してしまい、注入時の耐圧性は不十分である。
Ｂ：はく離強さ５以上〜１０Ｎ／ｍｍ未満。封止材が比較的容易にはく離してしまい、注入時の耐圧性はやや低い。
Ｃ：はく離強さ１０以上〜１５Ｎ／ｍｍ未満。封止材のはく離抵抗はやや弱いが、注入時の耐圧性には問題がない。
Ｄ（標準的な状態）：はく離強さ１５以上〜２５Ｎ／ｍｍ未満。スムーズに封止材をはく離できる。注入時の耐圧性も問題がない。
Ｅ：はく離強さ２５以上〜３５Ｎ／ｍｍ未満。封止材のはく離抵抗はやや大きいが連続的に界面破壊ではく離できる。注入時の耐圧性は十分。
Ｆ：はく離強さ３５以上〜４０Ｎ／ｍｍ未満。封止材のはく離抵抗が大きくはく離作業は容易ではないが概ね界面破壊ではく離できる。注入時の耐圧性は十分。
Ｇ：はく離強さ４０Ｎ／ｍｍ以上。封止材のはく離抵抗が大きく界面破壊が生じない。注入時の耐圧性は十分。
・ Evaluation The peeling performance was evaluated according to the following 7 grades of A to G. The standard state is the evaluation standard D, and the levels having no practical problem are the evaluation standards C, D, and E.
A: Peel strength is less than 5 N / mm. The sealing material is easily peeled off, and the pressure resistance during injection is insufficient.
B: Peel strength 5 or more and less than 10 N / mm. The sealing material is peeled off relatively easily, and the pressure resistance during injection is slightly low.
C: Peel strength of 10 or more and less than 15 N / mm. Although the peeling resistance of the sealing material is somewhat weak, there is no problem with the pressure resistance during injection.
D (standard state): peeling strength of 15 or more and less than 25 N / mm. The sealing material can be peeled off smoothly. There is no problem with pressure resistance during injection.
E: Peel strength 25 or more and less than 35 N / mm. Although the peeling resistance of the sealing material is somewhat large, it can be peeled off continuously by interfacial fracture. Sufficient pressure resistance during injection.
F: Peel strength 35 to less than 40 N / mm. Although the peeling resistance of the sealing material is large, the peeling operation is not easy, but can be peeled off by interface fracture. Sufficient pressure resistance during injection.
G: Peel strength of 40 N / mm or more. The peeling resistance of the sealing material is large, and interface destruction does not occur. Sufficient pressure resistance during injection.
・経日でのはく離強さの測定
上記と同様に作製した試験体について、封止材を塗布してから３日後及び７日後についても同様にはく離強さを測定し、評価した。
-Measurement of peel strength over time For the test specimens prepared in the same manner as described above, the peel strength was measured and evaluated in the same manner 3 days and 7 days after the sealing material was applied.
・モルタル表面の汚染性
上記の７日後にはく離強さを測定した後の試験体について、封止材を施工したモルタル表面と施工していないモルタル表面とを比較し変色が生じていないかを目視にて観察した。以下の基準に則り評価した。実用上問題がないレベルは評価基準◎及び○である。
◎：モルタル表面に変色が全く認められない
○：モルタル表面に若干変色が認められるが、ほとんど気にならない
△：モルタル表面に明らかに変色が認められる
×：モルタル表面が完全に変色し汚染されている
・ Contamination on the surface of the mortar For the specimen after measuring the peel strength after 7 days, compare the surface of the mortar on which the sealing material was applied with the surface of the mortar on which the sealing material was not applied to see if any discoloration occurred. Observed. Evaluation was made according to the following criteria. Levels where there is no practical problem are the evaluation criteria ◎ and ○.
◎: No discoloration is observed on the mortar surface ○: Some discoloration is observed on the mortar surface, but hardly noticeable △: Clear discoloration is observed on the mortar surface ×: The mortar surface is completely discolored and contaminated Have
［比較例１］
水系下塗り剤をデンプン水溶液（固形分９０％）に変更した以外は、実施例と同様に各種試験を行った。
［比較例２］
水系下塗り剤をデンプン水溶液（固形分９０％）に、封止材をウレタン系樹脂を主成分とするものに変更した以外は、実施例と同様に各種試験を行った。
［比較例３］
水系下塗り剤を塗布しなかった以外は実施例と同様に各種試験を行った。
[Comparative Example 1]
Various tests were conducted in the same manner as in the Examples except that the aqueous primer was changed to an aqueous starch solution (solid content 90%).
[Comparative Example 2]
Various tests were carried out in the same manner as in the Examples except that the aqueous primer was changed to an aqueous starch solution (solid content: 90%) and the sealing material was changed to one containing a urethane resin as a main component.
[Comparative Example 3]
Various tests were conducted in the same manner as in the examples except that the aqueous primer was not applied.
実施例及び比較例の各種試験の結果を以下に示す。
［表１］
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
実施例１ 実施例２
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
水系下塗り剤 スチレン−アクリル エチレン−酢酸ビニル
共重合エマルジョン 共重合エマルジョン
────────────────────────────────────────
封止材 変成シリコーン 変成シリコーン
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
はく離強さ １０ ８
Ｎ／ｍｍ （界面破壊） （界面破壊）
────────────────────────────────────────
はく離 １日後 Ｃ Ｂ
性能の ３日後 Ｃ Ｃ
評価 ７日後 Ｃ Ｃ
────────────────────────────────────────
汚染性評価 ○ ○
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
［表２］
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
比較例１ 比較例２ 比較例３
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
水系下塗り剤 デンプン水溶液 デンプン水溶液 なし
────────────────────────────────────────
封止材 変成シリコーン ウレタン 変成シリコーン
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
はく離強さ １ ４１ ２４
Ｎ／ｍｍ （界面破壊） （界面破壊） （界面破壊）
────────────────────────────────────────
はく離 １日後 Ａ Ｇ Ｄ
性能の ３日後 Ａ Ｇ Ｅ
評価 ７日後 Ａ Ｇ Ｆ
────────────────────────────────────────
汚染性評価 ◎ ◎ △
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
The results of various tests in Examples and Comparative Examples are shown below.
[Table 1]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Example 1 Example 2
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Water based primer Styrene-acrylic ethylene-vinyl acetate
Copolymerization emulsion Copolymerization emulsion────────────────────────────────────────
Sealant Modified silicone Modified silicone ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Peel strength 10 8
N / mm (interface failure) (interface failure)
────────────────────────────────────────
1 day after peeling CB
3 days after performance CC
Evaluation 7 days later CC
────────────────────────────────────────
Contamination assessment ○ ○ ○
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
[Table 2]
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Comparative Example 1 Comparative Example 2 Comparative Example 3
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Water based primer Starch aqueous solution Starch aqueous solution None ────────────────────────────────────────
Sealant Modified silicone Urethane Modified silicone ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Peel strength 1 41 24
N / mm (interface failure) (interface failure) (interface failure)
────────────────────────────────────────
1 day after peeling A G D
3 days after performance AGE
Evaluation 7 days later A GF
────────────────────────────────────────
Contamination assessment ◎ ◎ △
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
表１に示したとおり、本発明の構成を備えた実施例においては、施工面の外観を損なうことなく、封止材の密着性と易はく離性を兼ね備え、経日でのはく離強さにも変化がないことがわかる。一方、表２に示したとおり、比較例においては、外観、はく離性能、密着性のいずれかにおいて不具合が認められた。 As shown in Table 1, in the examples provided with the configuration of the present invention, without compromising the appearance of the construction surface, it has both the adhesiveness of the sealing material and easy peeling, and the peel strength over time You can see that there is no change. On the other hand, as shown in Table 2, in the comparative example, a defect was observed in any of appearance, peeling performance, and adhesion.
本発明に係るコンクリート構造物のひび割れ補修方法は、封止材の種類にかかわらず、施工終了後にコンクリートの外観を損なうことなく、施工時の密着性と施工終了後の易はく離性が得られるという特徴を有することから、コンクリート構造物のひび割れ補修方法として用いることができる。
Regardless of the type of sealing material, the crack repair method for a concrete structure according to the present invention can provide adhesion at the time of construction and easy peeling after the construction without damaging the appearance of the concrete after the construction. Since it has characteristics, it can be used as a crack repairing method for concrete structures.
Claims (5)
工程１：水系下塗り材を補修すべきひび割れ部位のコンクリート表面に塗布する工程。
工程２：補修すべきひび割れ部位上に、注入口付き座金を取り付ける工程。
工程３：水系下塗り材を塗布したコンクリート表面に、注入されるエポキシ樹脂等の硬化性樹脂が漏洩することを防止する封止材を施工する工程。
工程４：注入口付き座金を介してひび割れ部位内部にエポキシ樹脂等の硬化性樹脂を注入する工程。 A method for repairing a crack in a concrete structure comprising the following steps 1 to 4, wherein the water-based primer is a film-forming resin dispersion.
Process 1: The process of apply | coating the water-system undercoat material to the concrete surface of the crack site | part which should be repaired.
Process 2: The process of attaching a washer with an inlet on the crack site to be repaired.
Step 3: A step of applying a sealing material that prevents leakage of a curable resin such as an injected epoxy resin on a concrete surface to which a water-based primer is applied.
Step 4: A step of injecting a curable resin such as an epoxy resin into the cracked portion through a washer with an injection port.
The sealing material is a modified silicone resin, a urethane resin, an epoxy resin, an acrylic resin, a silylated urethane resin, a cement mortar composition, or a hot melt resin, according to any one of claims 1 to 4. The crack repair method of the concrete structure of description.
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|---|---|---|---|---|
| CN110146442A (en) * | 2018-11-20 | 2019-08-20 | 卡本科技股份有限公司 | A kind of method for analog construction of assembled MS sealant at low ambient temperatures |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0957190A (en) * | 1995-08-25 | 1997-03-04 | Dainippon Toryo Co Ltd | Coating method for inorganic building material |
| JPH09189134A (en) * | 1996-01-10 | 1997-07-22 | Konishi Kk | Repair method of crack |
| JPH11210148A (en) * | 1998-01-28 | 1999-08-03 | Kenzai Techno Kenkyusho:Kk | Alc decorative panel and its manufacture |
| JP2000198921A (en) * | 1998-11-06 | 2000-07-18 | Nippon Parkerizing Co Ltd | Peelable aqueous composition |
| JP2003003153A (en) * | 2001-06-25 | 2003-01-08 | Dainippon Ink & Chem Inc | Crack encapsulant of structure and method for construction using the same |
| JP2005226231A (en) * | 2004-02-10 | 2005-08-25 | Clion Co Ltd | Method of repairing surface of lightweight cellular concrete panel |
| JP2007009672A (en) * | 2005-05-31 | 2007-01-18 | Cemedine Co Ltd | Crack repairing method |
| JP2007247279A (en) * | 2006-03-16 | 2007-09-27 | Dyflex Corp | Repair method for existing external facing tile wall surface |
| JP2008002176A (en) * | 2006-06-23 | 2008-01-10 | Denki Kagaku Kogyo Kk | Composite body and method of producing the same |
| JP2008063567A (en) * | 2006-08-10 | 2008-03-21 | Asahi Kasei Chemicals Corp | Aqueous resin dispersion |
-
2008
- 2008-10-01 JP JP2008255971A patent/JP5147628B2/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0957190A (en) * | 1995-08-25 | 1997-03-04 | Dainippon Toryo Co Ltd | Coating method for inorganic building material |
| JPH09189134A (en) * | 1996-01-10 | 1997-07-22 | Konishi Kk | Repair method of crack |
| JPH11210148A (en) * | 1998-01-28 | 1999-08-03 | Kenzai Techno Kenkyusho:Kk | Alc decorative panel and its manufacture |
| JP2000198921A (en) * | 1998-11-06 | 2000-07-18 | Nippon Parkerizing Co Ltd | Peelable aqueous composition |
| JP2003003153A (en) * | 2001-06-25 | 2003-01-08 | Dainippon Ink & Chem Inc | Crack encapsulant of structure and method for construction using the same |
| JP2005226231A (en) * | 2004-02-10 | 2005-08-25 | Clion Co Ltd | Method of repairing surface of lightweight cellular concrete panel |
| JP2007009672A (en) * | 2005-05-31 | 2007-01-18 | Cemedine Co Ltd | Crack repairing method |
| JP2007247279A (en) * | 2006-03-16 | 2007-09-27 | Dyflex Corp | Repair method for existing external facing tile wall surface |
| JP2008002176A (en) * | 2006-06-23 | 2008-01-10 | Denki Kagaku Kogyo Kk | Composite body and method of producing the same |
| JP2008063567A (en) * | 2006-08-10 | 2008-03-21 | Asahi Kasei Chemicals Corp | Aqueous resin dispersion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146442A (en) * | 2018-11-20 | 2019-08-20 | 卡本科技股份有限公司 | A kind of method for analog construction of assembled MS sealant at low ambient temperatures |
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