JP2901897B2 - Bonding method of FRP in repair and reinforcement of concrete structures - Google Patents

Bonding method of FRP in repair and reinforcement of concrete structures

Info

Publication number
JP2901897B2
JP2901897B2 JP7103213A JP10321395A JP2901897B2 JP 2901897 B2 JP2901897 B2 JP 2901897B2 JP 7103213 A JP7103213 A JP 7103213A JP 10321395 A JP10321395 A JP 10321395A JP 2901897 B2 JP2901897 B2 JP 2901897B2
Authority
JP
Japan
Prior art keywords
fiber material
adhesive
concrete structure
frp
bonding
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.)
Expired - Fee Related
Application number
JP7103213A
Other languages
Japanese (ja)
Other versions
JPH08276530A (en
Inventor
誠也 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHOOBONDO KENSETSU KK
Original Assignee
SHOOBONDO KENSETSU KK
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Filing date
Publication date
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Application filed by SHOOBONDO KENSETSU KK filed Critical SHOOBONDO KENSETSU KK
Priority to JP7103213A priority Critical patent/JP2901897B2/en
Priority to KR1019960010158A priority patent/KR100210434B1/en
Publication of JPH08276530A publication Critical patent/JPH08276530A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Bridges Or Land Bridges (AREA)
  • Laminated Bodies (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明は、コンクリート構造物の
補修・補強におけるＦ・Ｒ・Ｐの接着方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP bonding method for repairing and reinforcing concrete structures.

【０００２】[0002]

【従来の技術】コンクリート構造物の補修・補強方法に
おいて、近時、道路橋の床版、梁、橋脚等のコンクリー
ト構造物を繊維材を用いて、補修・補強する方法が注目
されている。この方法は、Ｆ・Ｒ・Ｐすなわちカーボン
繊維、アラミド繊維、ガラス繊維等をシート状にした繊
維材にエポキシ樹脂、ポリエステル樹脂等の熱硬化型接
着剤を含浸させ、これをコンクリート構造物へ積層して
接着一体化し、コンクリート構造物を補修・補強しよう
とするものである。2. Description of the Related Art As a method of repairing and reinforcing concrete structures, a method of repairing and reinforcing concrete structures such as floor slabs, beams, and piers of road bridges using fiber materials has recently attracted attention. In this method, FRP, that is, a fiber material made of a sheet of carbon fiber, aramid fiber, glass fiber, or the like is impregnated with a thermosetting adhesive such as an epoxy resin or a polyester resin and laminated on a concrete structure. To bond and integrate to repair and reinforce concrete structures.

【０００３】繊維材に接着剤を含浸する方法としては、
接着剤を構造物に塗布し、その上に繊維材を貼り付けた
後、又は、予め接着剤を付着した繊維材を構造物に貼り
付けた後、その上からローラー、ゴムベラ等を用いて押
圧するというのが普通である。かかる方法によるとコン
クリート構造物の補修・補強の効果は相当のものがある
が、作業性に幾つかの問題点があった。[0003] As a method of impregnating a fiber material with an adhesive,
After applying an adhesive to the structure and attaching a fiber material on it, or after attaching a fiber material to which the adhesive has been previously attached to the structure, press it with a roller, rubber spatula, etc. from above It is common to do. According to this method, the effect of repair / reinforcement of the concrete structure is considerable, but there are some problems in workability.

【０００４】まず、接着剤にかなりの粘度と揺変性がな
いと、接着剤が硬化するまでの間に構造物に貼り付けた
繊維材が構造物から剥がれたり、接着剤がだれたりす
る。[0004] First, if the adhesive does not have considerable viscosity and thixotropic properties, the fibrous material adhered to the structure is peeled off from the structure or the adhesive is dripped before the adhesive hardens.

【０００５】そこで、剥がれ防止とだれ防止のために接
着剤に高い粘度と揺変性を付与すると、繊維材への接着
剤の完全な含浸には長時間を要し、非常な困難を伴う。
そのため、押圧作業中に繊維材の位置がずれ、繊維の蛇
行、ふくれ等が生じ易くなる。かかる現象は、特に冬場
に顕著である。Therefore, if high viscosity and thixotropic properties are imparted to the adhesive to prevent peeling and dripping, complete impregnation of the fiber material with the adhesive takes a long time and is extremely difficult.
For this reason, the position of the fiber material is shifted during the pressing operation, and meandering, bulging, and the like of the fiber are likely to occur. Such a phenomenon is particularly remarkable in winter.

【０００６】[0006]

【発明が解決しようとする課題】本発明は、繊維材によ
るコンクリート構造物の補修・補強にあたって、上述し
た問題点を解決し、作業性に優れたコンクリート構造物
の補修・補強におけるＦ・Ｒ・Ｐの接着方法を提供しよ
うとするものである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems in repairing and reinforcing concrete structures by using fibrous materials, and solves the above problem by repairing and reinforcing concrete structures having excellent workability. It is intended to provide a method for bonding P.

【０００７】[0007]

【課題を解決するための手段】上記問題点を解決するた
め、本発明は、コンクリート構造物の補修・補強におけ
るＦ・Ｒ・Ｐの接着方法において、コンクリート構造物
と繊維材とを接着剤を使用して貼り付け、この上から、
高温度面を有する加熱・加圧器具を用いて押し均すこと
を特徴とする方法からなる。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a method of bonding FRP in repair and reinforcement of a concrete structure. Use and paste from above,
It comprises a method characterized in that it is leveled using a heating / pressing device having a high temperature surface.

【０００８】そして、コンクリート構造物と繊維材との
接着剤での貼り付けは、コンクリート構造物に接着剤を
塗布することにより行うか、繊維材に接着剤を付着する
ことを好ましい例とする。[0008] It is preferable to apply the adhesive between the concrete structure and the fiber material by applying an adhesive to the concrete structure or to attach the adhesive to the fiber material.

【０００９】[0009]

【実施例】つぎに、本発明の実施例を具体的に説明す
る。図１は、本発明に係るコンクリート構造物の補修・
補強におけるＦ・Ｒ・Ｐの接着方法及びその前後の公知
の施工手順の一例を示すフローチャート、図２、図３
は、本発明のコンクリート構造物の補修・補強における
Ｆ・Ｒ・Ｐの接着方法の具体例を示す概略図である。以
下、図に基づき、繊維材を用いたコンクリート構造物の
補修・補強におけるＦ・Ｒ・Ｐの接着方法を説明する。Next, embodiments of the present invention will be described specifically. FIG. 1 shows the repair and repair of a concrete structure according to the present invention.
Flow chart showing an example of a method of bonding FRP in reinforcement and known construction procedures before and after the bonding, FIGS. 2 and 3.
FIG. 2 is a schematic view showing a specific example of an FRP bonding method for repairing and reinforcing concrete structures according to the present invention. Hereinafter, a method of bonding FRP in repair and reinforcement of a concrete structure using a fiber material will be described with reference to the drawings.

【００１０】（１）まず、施工に先立ち、コンクリート
構造物の損傷度をチェックし、ひび割れ状況等を記録す
る準備工、（２）風化層等の表面強度の弱った部分、汚
れ、離型剤層、レイタンス層をディスクサンダー等を用
いて除去し、平坦で脆弱部や汚れのない面とする下地処
理工、（３）下地コンクリート面の鋭角な凹凸をディス
クサンダー等で平滑に仕上げたり、型枠目地、段差部及
びハンチ隅角部の段差修正や不陸調整、鉄筋露出・コン
クリート面の断面欠損・豆板等のコンクリート不良部分
を除去して断面修復を行う断面修復工（不陸調整）、
（４）繊維材の貼り付け位置のマーキングを行うコンク
リート面罫線工、（５）プライマーを塗布するプライマ
ー塗布工を経て、（６）繊維材接着工へと進む。(1) First, prior to construction, check the degree of damage to the concrete structure, and record the state of cracks, etc. (2) A portion of the weathered layer or the like having a weak surface strength, dirt, mold release agent Layer and latence layer are removed using a disk sander or the like, and the surface is flat and free of fragile parts and stains. (3) The sharp irregularities on the surface of the underlying concrete are smoothed with a disk sander or the like. Cross-section repair (cross-road adjustment) for repairing cross-sections by repairing uneven joints and unevenness of frame joints, steps, and corners of haunches, removing exposed portions of steel bars, cross-section defects on concrete surfaces, and defective concrete parts such as bean boards.
After (4) a concrete surface ruler for marking the position where the fiber material is to be applied, (5) a primer coating process for applying a primer, and then (6) a fiber material bonding process.

【００１１】繊維材接着工では、まず、図２、図３に示
すように、コンクリート構造物１と繊維材２とを接着剤
３を使用して貼り付ける。具体的には、図２及び図３に
おいて、コンクリート構造物１の繊維材２の貼り付け面
に接着剤３を塗布するか、繊維材２に接着剤３を付着さ
せて、コンクリート構造物１に繊維材２を貼り付ける。In the fiber material bonding work, first, as shown in FIGS. 2 and 3, a concrete structure 1 and a fiber material 2 are bonded using an adhesive 3. Specifically, in FIG. 2 and FIG. 3, the adhesive 3 is applied to the surface of the concrete structure 1 to which the fiber material 2 is attached, or the adhesive 3 is adhered to the fiber material 2 so that the concrete structure 1 The fiber material 2 is attached.

【００１２】ついで、高温度面を有する加熱・加圧器具
４を繊維材２に押し当て、加熱・加圧しながら繊維材２
を押し均し、コンクリート構造物１と繊維材２を接着す
る。Next, a heating / pressing device 4 having a high temperature surface is pressed against the fiber material 2 and the fiber material 2 is heated and pressed.
And the concrete structure 1 and the fiber material 2 are bonded.

【００１３】２層以上を積層する場合には、既に接着し
た繊維材の表面に接着剤を塗布するか、新たに積層する
繊維材に接着剤を付着し、先の繊維材の上に新たに積層
する繊維材を貼り付けて同様作業を繰り返す。In the case of laminating two or more layers, an adhesive is applied to the surface of the fibrous material which has already been adhered, or an adhesive is adhered to the fibrous material to be newly laminated, and a new fibrous material is newly placed on the fibrous material. The same operation is repeated by attaching the fiber material to be laminated.

【００１４】加熱温度は、接着剤や繊維材の物性に影響
を与えない温度として、７０度Ｃ乃至１３０度Ｃ程度が
好ましい。加熱・加圧器具４は、図１にあっては、加熱
・加圧面が曲面状にして、発熱体を内蔵する加熱ローラ
ーを、図２にあっては、加熱・加圧面が平面状の電気ア
イロンをそれぞれ用いた。５は加熱・加圧器具４と電源
（図示してない）を結ぶコードである。The heating temperature is preferably about 70 ° C. to 130 ° C. as a temperature which does not affect the physical properties of the adhesive and the fiber material. In FIG. 1, the heating / pressing device 4 has a heating / pressing surface having a curved surface and a heating roller having a built-in heating element. In FIG. 2, the heating / pressing device has a flat heating / pressing surface. An iron was used for each. A code 5 connects the heating / pressing device 4 and a power supply (not shown).

【００１５】上述のようにして、繊維材接着工が終了し
た後は、必要に応じて、（７）仕上げ工を行う。たとえ
ば、繊維材に含浸した接着剤の紫外線による劣化を防止
するため、繊維材の表面にフッ素樹脂上塗塗料等を塗布
する。After the fiber material bonding is completed as described above, (7) finishing is performed as necessary. For example, in order to prevent the adhesive impregnated in the fibrous material from being deteriorated by ultraviolet rays, a fluororesin top coat is applied to the surface of the fibrous material.

【００１６】[0016]

【発明の効果】本発明は、上述のようにしてなるので、
すなわち、請求項１乃至３において、コンクリート構造
物に繊維材を接着剤を使用して貼り付け、この上から高
温度面を有する加熱・加圧器具を用いて押し均す構成と
したので、つぎの効果を有する。Since the present invention has been made as described above,
That is, in the first to third aspects, a fiber material is attached to a concrete structure using an adhesive, and the structure is pressed and flattened using a heating / pressing device having a high temperature surface. Has the effect of

【００１７】（１） 貼り付けた繊維材に加熱器具を押
し当て、熱を加えることにより、コンクリート構造物に
繊維材を貼り付ける接着剤は、粘度が低くなり、短時間
で容易に繊維材に含浸する。また、繊維材に接着剤が均
一に効果的に行われるため、品質の安定した繊維材の層
をコンクリート構造物に接着することになる。 （２） 貼り付けた繊維材に加熱器具を押し当て、熱を
加えることにより、繊維を集束するために用いている集
束剤が軟らかくなって、繊維材が変形しやすくなり、接
着剤は繊維材に含浸しやすくなる。 （３） 貼り付けた繊維材に加熱器具を押し当て、熱を
加えることにより、繊維を集束するために用いている集
束剤が軟らかくなって、繊維材が変形しやすくなり、繊
維材の加工時に生じた蛇行、ゆるみ、しわ等を修正する
ことができる。 （４） 貼り付けた繊維材に加熱器具を押し当て、熱を
加えることにより、繊維を集束するために用いている集
束剤が軟らかくなって変形しやすくなり、コンクリート
構造物の不陸に容易に追随できるようになり、接着時の
たるみやふくらみを修正することができる。 （５） 貼り付けた繊維材に加熱器具を押し当て、熱を
加えることにより、樹脂の硬化が早くなる。したがっ
て、施工時間と工期が短縮される。 （６） 以上の効果により、コンクリート構造物に繊維
材を接着することにより、コンクリート構造物を補修・
補強する方法において、作業性の優れたＦ・Ｒ・Ｐの接
着方法を提供することができる。(1) By pressing a heating device against the attached fiber material and applying heat, the adhesive for attaching the fiber material to the concrete structure has a low viscosity and can be easily applied to the fiber material in a short time. Impregnate. Further, since the adhesive is uniformly and effectively applied to the fiber material, a layer of the fiber material having a stable quality is bonded to the concrete structure. (2) By pressing a heating device against the attached fiber material and applying heat, the sizing agent used to bundle the fibers is softened, the fiber material is easily deformed, and the adhesive is a fiber material. Impregnated easily. (3) By pressing a heating device against the attached fiber material and applying heat, the sizing agent used to bundle the fibers is softened, and the fiber material is easily deformed. The resulting meandering, loosening, wrinkles, etc. can be corrected. (4) By pressing a heating device against the stuck fiber material and applying heat, the sizing agent used to bundle the fibers is softened and easily deformed, making it easier for the concrete structure to become uneven. This will allow you to follow, and correct any looseness or swelling during bonding. (5) The heating device is pressed against the attached fibrous material and heat is applied, whereby the curing of the resin is accelerated. Therefore, the construction time and the construction period are reduced. (6) With the above effects, the concrete structure can be repaired by bonding the fiber material to the concrete structure.
In the reinforcing method, it is possible to provide a method of bonding FRP with excellent workability.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係るコンクリート構造物の補修・補強
におけるＦ・Ｒ・Ｐの接着方法及びその前後の施工手順
の一例を示すフローチャートである。FIG. 1 is a flowchart showing an example of a method of bonding FRP in repair and reinforcement of a concrete structure according to the present invention, and an example of a construction procedure before and after the method.

【図２】本発明に係るコンクリート構造物の補修・補強
におけるＦ・Ｒ・Ｐの接着方法において、高温度面を有
する加熱・加圧器具として加熱ローラーを用いた実施例
を示す説明図である。FIG. 2 is an explanatory diagram showing an embodiment in which a heating roller is used as a heating / pressing device having a high-temperature surface in the method of bonding F, R, and P in repairing and reinforcing concrete structures according to the present invention. .

【図３】本発明に係るコンクリート構造物の補修・補強
におけるＦ・Ｒ・Ｐの接着方法において、高温度面を有
する加熱・加圧器具としてアイロンを用いた実施例を示
す説明図である。FIG. 3 is an explanatory view showing an embodiment in which an iron is used as a heating / pressing device having a high-temperature surface in the bonding method of FRP in repairing and reinforcing concrete structures according to the present invention.

【符号の説明】[Explanation of symbols]

１ コンクリート構造物 ２ 繊維材 ３ 接着剤 ４ 加熱・加圧器具 DESCRIPTION OF SYMBOLS 1 Concrete structure 2 Fiber material 3 Adhesive 4 Heating / pressing equipment

フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B32B 1/00 - 35/00 Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) B32B 1/00-35/00

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 コンクリート構造物に繊維材を接着剤を
使用して貼り付け、この上から高温度面を有する加熱・
加圧器具を用いて押し均すことを特徴とするコンクリー
ト構造物の補修・補強におけるＦ・Ｒ・Ｐの接着方法。1. A fiber material is attached to a concrete structure using an adhesive, and a heating / heating member having a high-temperature surface is applied from above.
A method of bonding FRP in repairing and reinforcing concrete structures, characterized in that the pressing is carried out using a pressurizing device. 【請求項２】 コンクリート構造物と繊維材との接着剤
での貼り付けは、コンクリート構造物に接着剤を塗布す
ることにより行うことを特徴とする請求項１に記載のコ
ンクリート構造物の補修・補強におけるＦ・Ｒ・Ｐの接
着方法。2. The concrete structure according to claim 1, wherein the bonding of the concrete structure and the fiber material with an adhesive is performed by applying an adhesive to the concrete structure. Bonding method of FRP in reinforcement. 【請求項３】 コンクリート構造物と繊維材との接着剤
での貼り付けは、繊維材に接着剤を付着することにより
行うことを特徴とする請求項１に記載のコンクリート構
造物の補修・補強におけるＦ・Ｒ・Ｐの接着方法。3. The repair / reinforcement of a concrete structure according to claim 1, wherein the bonding of the concrete structure and the fiber material with an adhesive is performed by attaching an adhesive to the fiber material. Bonding method of FRP
JP7103213A 1995-04-05 1995-04-05 Bonding method of FRP in repair and reinforcement of concrete structures Expired - Fee Related JP2901897B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7103213A JP2901897B2 (en) 1995-04-05 1995-04-05 Bonding method of FRP in repair and reinforcement of concrete structures
KR1019960010158A KR100210434B1 (en) 1995-04-05 1996-04-04 Process for adhering f.r.p. on concrete structure

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JP3899447B2 (en) * 1998-08-11 2007-03-28 神東塗料株式会社 Reinforcement method
KR100704939B1 (en) * 2006-09-20 2007-04-09 이순익 Method of restoring section for a concrete structure and apparatus thereof
PT2474411T (en) * 2011-01-07 2019-03-29 Soletanche Freyssinet Method of reinforcing a construction work.
JP6534173B2 (en) * 2015-06-26 2019-06-26 中日本高速道路株式会社 Below the girder noise prevention structure having the anti-drop performance of concrete pieces and manufacturing method of the structure
CN111101728A (en) * 2019-12-26 2020-05-05 中国建筑第八工程局有限公司 Carbon fiber reinforced structure stretched by rolling and construction method thereof

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JP2680707B2 (en) * 1990-01-17 1997-11-19 三菱化学株式会社 Reinforcement method for concrete structural materials
JP3028976B2 (en) * 1990-06-29 2000-04-04 大阪瓦斯株式会社 Base adjustment method
JP2965173B2 (en) * 1991-05-13 1999-10-18 東レ株式会社 Fiber reinforced resin reinforced cement based structure
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KR970070379A (en) 1997-11-07
JPH08276530A (en) 1996-10-22

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