JP2003247211A - Flaking preventive concrete structure and flaking preventing method for concrete structure - Google Patents
Flaking preventive concrete structure and flaking preventing method for concrete structureInfo
- Publication number
- JP2003247211A JP2003247211A JP2002047525A JP2002047525A JP2003247211A JP 2003247211 A JP2003247211 A JP 2003247211A JP 2002047525 A JP2002047525 A JP 2002047525A JP 2002047525 A JP2002047525 A JP 2002047525A JP 2003247211 A JP2003247211 A JP 2003247211A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic polymer
- resin
- concrete structure
- fiber sheet
- continuous fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、剥落防止コンクリ
ート構造物およびコンクリート構造物の剥落防止方法に
関し、特に、高速道路及び鉄道等の橋梁と橋脚部からの
コンクリート片剥落防止工事において工期短縮とトータ
ルコストの低減を実現できる剥落防止コンクリート構造
物およびコンクリート構造物の剥落防止方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spallation preventing concrete structure and a method for preventing spalling of a concrete structure, and in particular, shortens the construction period and reduces the total construction period for concrete spalling prevention work from bridges and bridge piers such as highways and railways. The present invention relates to a spalling prevention concrete structure capable of realizing cost reduction and a spalling prevention method for a concrete structure.
【0002】[0002]
【従来の技術】現在、コンクリート片剥落防止工法で
は、合成高分子系樹脂が剥落防止材として主として使用
されているが、従来使用されている合成高分子系樹脂の
硬化時間は比較的長く、しかも外気温に大きく左右され
る為、とりわけ寒冷地や気温の低い冬季における施工で
は、硬化養生期間による工期延長に起因して、様々な問
題が発生している。2. Description of the Related Art At present, in a concrete piece exfoliation prevention method, a synthetic polymer resin is mainly used as an exfoliation prevention material, but the curing time of the synthetic polymer resin conventionally used is relatively long, and Since it is greatly affected by the outside temperature, various problems have occurred due to the extension of the construction period due to the hardening and curing period, especially in the construction in cold regions and winter when the temperature is low.
【0003】[0003]
【発明が解決しようとする課題】例えば、高速道路にお
けるコンクリート片剥落防止工事は、本線、ランプ交差
箇所や鉄道・道路との交差箇所が対象となるので、工事
中は交通規制が行なわれる。その為、渋滞、交通事故等
が現実に発生しており、工期延長により渋滞等の発生が
よりひどくなる。従来の剥落防止工法は、冬季で1日1
〜2工程を実施するのが限界である。本発明の目的は、
寒冷地や冬季でも工期を大幅に短縮できるコンクリート
構造物の剥落防止方法および剥落防止されたコンクリー
ト構造物を提供することである。For example, concrete fragment stripping prevention work on highways is targeted at main lines, ramp intersections, and intersections with railways and roads, so traffic restrictions are imposed during construction. Therefore, traffic jams, traffic accidents, etc. actually occur, and due to the extension of the construction period, traffic jams etc. become more severe. The conventional exfoliation prevention method is one day a day in winter.
The limit is to carry out ~ 2 steps. The purpose of the present invention is to
It is intended to provide a method for preventing exfoliation of a concrete structure and a concrete structure in which exfoliation is prevented, which can significantly shorten the construction period even in cold regions and winter.
【0004】[0004]
【課題を解決するための手段】本発明によれば、上記課
題は、
(1)コンクリート基材、該基材表面に塗布された合成
高分子系樹脂プライマー、該プライマー層上に合成高分
子系樹脂で接着された連続繊維シート、および該連続繊
維シートに吹き付けられた合成高分子系超速硬化樹脂か
らなる剥落防止コンクリート構造物;
(2)コンクリート基材の表面に合成高分子系樹脂プラ
イマーを塗布し、該プライマー層に、連続繊維シートを
合成高分子系樹脂で接着し、次いで、該連続繊維シート
に合成高分子系超速硬化樹脂を吹き付けることを含んで
なる、コンクリート構造物の剥落防止方法;
(3)コンクリート基材の表面に合成高分子系樹脂プラ
イマーを塗布し、該プライマー層上に、接着剤付き連続
繊維シートを貼り付け、次いで該連続繊維シートに合成
高分子系超速硬化樹脂を吹き付けることを含んでなる、
コンクリート構造物の剥落防止方法;
(4)コンクリート基材、該基材表面に塗布された合成
高分子系樹脂プライマー、および該プライマー層上に吹
き付けられた合成高分子系超速硬化樹脂からなる剥落防
止コンクリート構造物;
(5)コンクリート基材の表面に合成高分子系樹脂プラ
イマーを塗布し、次いで該プライマー層上に、合成高分
子系超速硬化樹脂を吹き付けることを含んでなる、コン
クリート構造物の剥落防止方法により解決される。According to the present invention, the above-mentioned problems are (1) a concrete base material, a synthetic polymer resin primer coated on the surface of the base material, and a synthetic polymer material on the primer layer. A continuous fiber sheet adhered with a resin, and a spallation prevention concrete structure composed of a synthetic polymer super fast curing resin sprayed onto the continuous fiber sheet; (2) A synthetic polymer resin primer is applied to the surface of a concrete base material Then, a continuous fiber sheet is adhered to the primer layer with a synthetic polymer resin, and then a synthetic polymer ultra-rapid curing resin is sprayed onto the continuous fiber sheet to prevent the concrete structure from falling off; (3) A synthetic polymer resin primer is applied to the surface of a concrete base material, a continuous fiber sheet with an adhesive is stuck on the primer layer, and then the continuous Comprising a blowing in Wei sheet synthetic polymer than fast curing resin,
Method for preventing peeling off of a concrete structure; (4) Prevention of peeling off of a concrete base material, a synthetic polymer resin primer applied to the surface of the base material, and a synthetic polymer super fast curing resin sprayed on the primer layer Concrete structure; (5) Peeling off of a concrete structure comprising applying a synthetic polymer resin primer to the surface of a concrete base material and then spraying a synthetic polymer super fast curing resin on the primer layer. It is solved by preventive methods.
【0005】[0005]
【発明の実施の形態】以下、コンクリート構造物の剥落
防止施工方法及び手順について説明するが、本発明がこ
れら方法及び手順に限定されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method and a procedure for preventing concrete structures from falling off will be described, but the present invention is not limited to these methods and procedures.
【0006】(方法1)
1.まず、コンクリート基材の表面に合成高分子系樹脂
プライマーを塗布する。塗布前には、コンクリート基材
の表面を事前処理する。例えば、コンクリート基材表面
の段差、凹凸、エフロ、ジャンカなどを、サンダー研
磨、ケレン掛け等により撤去し、表面を平滑にする。大
きな素穴や凹部は、硬化性樹脂パテ、樹脂セメント等を
充填して、平滑にする。事前処理が十分に行なわれたこ
とを確認した後、合成高分子系樹脂プライマーを塗布す
る。コンクリート下地への吸い込みが激しい場合、プラ
イマーを再塗布する。(Method 1) 1. First, a synthetic polymer resin primer is applied to the surface of a concrete base material. Prior to application, the surface of the concrete base material is pretreated. For example, steps, irregularities, efro, junkers, etc. on the surface of the concrete base material are removed by sanding, scraping, etc. to smooth the surface. Large holes and recesses are filled with curable resin putty, resin cement, etc. to make them smooth. After confirming that the pretreatment is sufficiently performed, the synthetic polymer resin primer is applied. Re-apply the primer if it is strongly sucked into the concrete substrate.
【0007】合成高分子系樹脂プライマーとしては、従
来の剥落防止施工で使用されている合成高分子樹脂系プ
ライマー、例えば二液エポキシ樹脂系、一液ポリウレタ
ン樹脂系、二液ポリウレタン樹脂系、ビニルエステル樹
脂系プライマーなどを使用できる。As the synthetic polymer resin primer, a synthetic polymer resin primer used in the conventional anti-stripping construction, for example, a two-component epoxy resin system, a one-component polyurethane resin system, a two-component polyurethane resin system, a vinyl ester A resin-based primer or the like can be used.
【0008】2.プライマーの乾燥硬化後、接着剤とし
ての合成高分子系樹脂(例えば、ポリウレタン樹脂接着
剤、エポキシ樹脂接着剤、ビニルエステル樹脂接着剤
等)を塗布し、その直後に、連続繊維シート(例えば、
ビニロン系繊維を含んでなる連続繊維シート、炭素系繊
維を含んでなる連続繊維シート等)を浮きが無いように
貼り付け、接着剤としての合成高分子系樹脂によりシー
トが見えないように目つぶしを行う。2. After the primer is dried and cured, a synthetic polymer resin as an adhesive (for example, polyurethane resin adhesive, epoxy resin adhesive, vinyl ester resin adhesive, etc.) is applied, and immediately after that, a continuous fiber sheet (for example,
Paste continuous fiber sheets containing vinylon-based fibers, continuous fiber sheets containing carbon-based fibers, etc.) so that they do not float, and use synthetic polymer resin as an adhesive to cover the sheets so that they cannot be seen. To do.
【0009】3.合成高分子系樹脂接着剤の硬化後、合
成高分子系超速硬化樹脂(例えば、超速硬化型ポリウレ
タン系樹脂またはポリウレア系樹脂)を、スプレー塗布
等の手段で均一に吹き付ける。
4.所望により、トップコート(例えば、アクリルウレ
タン系トップコート等)を塗布する。3. After the synthetic polymer resin adhesive is cured, a synthetic polymer ultra-fast curing resin (for example, ultra-fast curing polyurethane resin or polyurea resin) is uniformly sprayed by means such as spray coating. 4. If desired, a top coat (for example, an acrylic urethane top coat or the like) is applied.
【0010】上記方法1の工程2において、接着剤を塗
布し連続シートを貼り付ける換わりに、接着剤付きの連
続繊維シートを用いてもよい。Instead of applying the adhesive and adhering the continuous sheet in step 2 of the above method 1, a continuous fiber sheet with an adhesive may be used.
【0011】(方法2)
1.方法1と同様に、まず、コンクリート基材の表面に
合成高分子系樹脂プライマーを塗布する。
2.プライマーの乾燥硬化後、合成高分子系超速硬化樹
脂を、スプレー塗布等の手段で均一に吹き付ける。
3.所望により、トップコートを塗布する。(Method 2) 1. Similar to method 1, first, a synthetic polymer resin primer is applied to the surface of the concrete base material. 2. After the primer is dried and cured, the synthetic polymer ultra-fast curing resin is uniformly sprayed by means such as spray coating. 3. Apply topcoat if desired.
【0012】本発明は、上記の方法1または方法2によ
り施工されたコンクリート構造物にも関する。The present invention also relates to a concrete structure constructed by the above method 1 or method 2.
【0013】[0013]
【実施例】実施例1および2
以下の材料を用いて、コンクリート基材(寸法:60cm
×100cm)の剥落防止工事を行なった。
(実施例1)
1.プライマー:新東洋合成株式会社製一液ポリウレタ
ンプライマーMD-500(0.2kg/m2)
2.接着剤:新東洋合成株式会社製硬質ポリウレタン接
着剤MD-1000(0.3kg/m2)
3.連続繊維シート:三軸ビニロン繊維シート(1.0
/m2)
4.接着剤:新東洋合成株式会社製硬質ポリウレタン接
着剤MD-1000(0.2kg/m2)
5.超速硬化樹脂:新東洋合成株式会社製超速硬化ポリ
ウレタンMD-2000(1.0kg/m2)
6.トップコート:新東洋合成株式会社製二液アクリル
ウレタントップコートMD-3000(0.2kg/m2)EXAMPLES Examples 1 and 2 The following materials were used to make a concrete base material (size: 60 cm).
X 100 cm) was removed. (Example 1) 1. Primer: One-component polyurethane primer MD-500 (0.2 kg / m 2 ) manufactured by Shin-Toyo Gosei Co., Ltd. 2. Adhesive: Shin-Toyo Gosei Co., Ltd. hard polyurethane adhesive MD-1000 (0.3 kg / m 2 ). Continuous fiber sheet: Triaxial vinylon fiber sheet (1.0
/ M 2 ) 4. Adhesive: Shin-Toyo Gosei Co., Ltd. hard polyurethane adhesive MD-1000 (0.2 kg / m 2 ) 5. Super-fast curing resin: Shin-Toyo Gosei Co., Ltd. super-fast curing polyurethane MD-2000 (1.0 kg / m 2 ) 6. Top coat: Shin-Toyo Gosei Co., Ltd. two-component acrylic urethane top coat MD-3000 (0.2 kg / m 2 ).
【0014】(実施例2)
1.プライマー:新東洋合成株式会社製一液ポリウレタ
ンプライマーMD-500(0.2kg/m2)
2.超速硬化樹脂:新東洋合成株式会社製超速硬化ポリ
ウレタンMD-2000(1.0kg/m2)
3.トップコート:新東洋合成株式会社製二液アクリル
ウレタントップコートMD-3000(0.2kg/m2)
実施例1では約6時間、実施例2では約1時間にて工事
が完了でき、十分な剥落防止効果が得られた。(Example 2) 1. Primer: One-component polyurethane primer MD-500 (0.2 kg / m 2 ) manufactured by Shin-Toyo Gosei Co., Ltd. 2. Super fast curing resin: Super fast curing polyurethane MD-2000 (1.0 kg / m 2 ) manufactured by Shin Toyo Gosei Co., Ltd. 3. Top coat: Shin-Toyo Gosei Co., Ltd. two-component acrylic urethane top coat MD-3000 (0.2 kg / m 2 ) In Example 1, the construction can be completed in about 6 hours and in Example 2 in about 1 hour, which is sufficient. The effect of preventing flaking was obtained.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 牧 洋次 岡山県阿哲郡神郷町下神代2031−1 Fターム(参考) 2D059 BB39 GG02 GG29 GG39 2E176 AA01 BB29 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yoji Maki 2031-1 Shimogamidai, Kamigo-cho, Atsetsu-gun, Okayama Prefecture F term (reference) 2D059 BB39 GG02 GG29 GG39 2E176 AA01 BB29
Claims (8)
れた合成高分子系樹脂プライマー、該プライマー層上に
合成高分子系樹脂で接着された連続繊維シート、および
該連続繊維シートに吹き付けられた合成高分子系超速硬
化樹脂からなる剥落防止コンクリート構造物。1. A concrete base material, a synthetic polymer resin primer applied to the surface of the base material, a continuous fiber sheet adhered to the primer layer with a synthetic polymer resin, and sprayed onto the continuous fiber sheet. Deterioration-preventing concrete structure made of synthetic polymer super fast curing resin.
含んでなる連続繊維シートまたは炭素系繊維を含んでな
る連続繊維シートである請求項1に記載の剥落防止コン
クリート構造物。2. The exfoliation-preventing concrete structure according to claim 1, wherein the continuous fiber sheet is a continuous fiber sheet containing vinylon-based fibers or a continuous fiber sheet containing carbon-based fibers.
レタン系樹脂またはポリウレア系樹脂である請求項1に
記載の剥落防止コンクリート構造物。3. The exfoliation-preventing concrete structure according to claim 1, wherein the synthetic polymer ultra-fast curing resin is a polyurethane resin or a polyurea resin.
樹脂プライマーを塗布し、 該プライマー層に、連続繊維シートを合成高分子系樹脂
で接着し、次いで、 該連続繊維シートに合成高分子系超速硬化樹脂を吹き付
けることを含んでなる、コンクリート構造物の剥落防止
方法。4. A synthetic polymer resin primer is applied to the surface of a concrete base material, a continuous fiber sheet is bonded to the primer layer with a synthetic polymer resin, and then a synthetic polymer resin is applied to the continuous fiber sheet. A method for preventing exfoliation of a concrete structure, which comprises spraying a super fast curing resin.
樹脂プライマーを塗布し、 該プライマー層上に、接着剤付き連続繊維シートを貼り
付け、次いで該連続繊維シートに合成高分子系超速硬化
樹脂を吹き付けることを含んでなる、コンクリート構造
物の剥落防止方法。5. A synthetic polymer resin primer is applied to the surface of a concrete base material, a continuous fiber sheet with an adhesive is attached on the primer layer, and then a synthetic polymer ultra-rapid curing resin is applied to the continuous fiber sheet. A method for preventing exfoliation of a concrete structure, which comprises spraying.
れた合成高分子系樹脂プライマー、および該プライマー
層上に吹き付けられた合成高分子系超速硬化樹脂からな
る剥落防止コンクリート構造物。6. A peeling-preventing concrete structure comprising a concrete base material, a synthetic polymer-based resin primer applied to the surface of the base material, and a synthetic polymer-based ultra-fast curing resin sprayed on the primer layer.
レタン系樹脂またはポリウレア系樹脂である請求項6に
記載の剥落防止コンクリート構造物。7. The exfoliation-preventing concrete structure according to claim 6, wherein the synthetic polymer ultra-rapid curing resin is a polyurethane resin or a polyurea resin.
樹脂プライマーを塗布し、次いで該プライマー層上に、
合成高分子系超速硬化樹脂を吹き付けることを含んでな
る、コンクリート構造物の剥落防止方法。8. A synthetic polymer resin primer is applied to the surface of a concrete substrate, and then on the primer layer,
A method for preventing exfoliation of a concrete structure, which comprises spraying a synthetic polymer ultra-fast curing resin.
Priority Applications (1)
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JP2002047525A JP2003247211A (en) | 2002-02-25 | 2002-02-25 | Flaking preventive concrete structure and flaking preventing method for concrete structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002047525A JP2003247211A (en) | 2002-02-25 | 2002-02-25 | Flaking preventive concrete structure and flaking preventing method for concrete structure |
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Publication Number | Publication Date |
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JP2003247211A true JP2003247211A (en) | 2003-09-05 |
Family
ID=28660561
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JP2002047525A Pending JP2003247211A (en) | 2002-02-25 | 2002-02-25 | Flaking preventive concrete structure and flaking preventing method for concrete structure |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005213844A (en) * | 2004-01-29 | 2005-08-11 | Mitsui Kagaku Sanshi Kk | Concrete surface structure and its construction method |
JP2006348707A (en) * | 2005-06-20 | 2006-12-28 | Mitsui Kagaku Sanshi Kk | Surface structural body of structure and its construction method |
WO2012078664A1 (en) | 2010-12-06 | 2012-06-14 | University Of Tennessee Research Foundation | High strength and high elasticity composite materials and methods of reinforcing substrates with the same |
CN103225268A (en) * | 2013-05-11 | 2013-07-31 | 中建六局土木工程有限公司 | Winter construction method of bridge pier stud in extremely cold region |
JP2013159951A (en) * | 2012-02-03 | 2013-08-19 | Shimizu Corp | Structure and method for reinforcing the same |
CN106592430A (en) * | 2016-11-14 | 2017-04-26 | 中建三局基础设施工程有限公司 | Cast-in-place winter construction method for hanging basket cantilever |
JP2018003444A (en) * | 2016-07-01 | 2018-01-11 | 大日本塗料株式会社 | Concrete exfoliation prevention method |
JP2018079637A (en) * | 2016-11-17 | 2018-05-24 | 藤野 勲次 | Method for producing resin concrete product |
-
2002
- 2002-02-25 JP JP2002047525A patent/JP2003247211A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005213844A (en) * | 2004-01-29 | 2005-08-11 | Mitsui Kagaku Sanshi Kk | Concrete surface structure and its construction method |
JP2006348707A (en) * | 2005-06-20 | 2006-12-28 | Mitsui Kagaku Sanshi Kk | Surface structural body of structure and its construction method |
WO2012078664A1 (en) | 2010-12-06 | 2012-06-14 | University Of Tennessee Research Foundation | High strength and high elasticity composite materials and methods of reinforcing substrates with the same |
EP2648905A4 (en) * | 2010-12-06 | 2016-02-17 | Univ Tennessee Res Foundation | High strength and high elasticity composite materials and methods of reinforcing substrates with the same |
JP2013159951A (en) * | 2012-02-03 | 2013-08-19 | Shimizu Corp | Structure and method for reinforcing the same |
CN103225268A (en) * | 2013-05-11 | 2013-07-31 | 中建六局土木工程有限公司 | Winter construction method of bridge pier stud in extremely cold region |
JP2018003444A (en) * | 2016-07-01 | 2018-01-11 | 大日本塗料株式会社 | Concrete exfoliation prevention method |
CN106592430A (en) * | 2016-11-14 | 2017-04-26 | 中建三局基础设施工程有限公司 | Cast-in-place winter construction method for hanging basket cantilever |
JP2018079637A (en) * | 2016-11-17 | 2018-05-24 | 藤野 勲次 | Method for producing resin concrete product |
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