JP2004068522A - Electric insulation repair/reinforcement material and method for common use in electric protection for reinforced concrete structure - Google Patents

Electric insulation repair/reinforcement material and method for common use in electric protection for reinforced concrete structure Download PDF

Info

Publication number
JP2004068522A
JP2004068522A JP2002232659A JP2002232659A JP2004068522A JP 2004068522 A JP2004068522 A JP 2004068522A JP 2002232659 A JP2002232659 A JP 2002232659A JP 2002232659 A JP2002232659 A JP 2002232659A JP 2004068522 A JP2004068522 A JP 2004068522A
Authority
JP
Japan
Prior art keywords
repair
reinforcement
reinforced concrete
electrical insulation
concrete structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2002232659A
Other languages
Japanese (ja)
Other versions
JP3808017B2 (en
Inventor
Keiji Imamura
今村　圭司
Takumi Yamagata
山縣　琢己
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.)
Sho Bond Corp
Original Assignee
Sho Bond Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sho Bond Corp filed Critical Sho Bond Corp
Priority to JP2002232659A priority Critical patent/JP3808017B2/en
Publication of JP2004068522A publication Critical patent/JP2004068522A/en
Application granted granted Critical
Publication of JP3808017B2 publication Critical patent/JP3808017B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the covering of an electrically protected reinforced concrete structure with an electrically conducting repair/reinforcement member may hinder a supply current or cause gas blocking. <P>SOLUTION: An electrically conductive repair/reinforcement member has an electrical insulation layer formed on one side thereof. An electric insulation repair/reinforcement material is used in repair, reinforcement and the electric protection of a reinforced concrete structure where openings exposing the concrete surface of the structure when the material is mounted on the concrete surface are formed at appropriate intervals. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、鉄筋コンクリート構造物の埋設されている鉄筋の腐食による劣化防止を目的とした鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材及び鉄筋コンクリート構造物の電気防食併用補修・補強方法に関する。
【０００２】
【従来の技術】
鉄筋コンクリート構造物は、永久不滅と考えられた時期もあったが、近年、年月を経た鉄筋コンクリート構造物のコンクリートは、コールドジョイントや中性化、塩害若しくは施工不良など様々な理由により、コンクリート片としての剥離落下やひび割れによる漏水をもたらし、社会問題となってきた。
【０００３】
特に、塩害地区においての鉄筋コンクリート構造物は、塩分がコンクリート表面に付着する。塩分がコンクリート内部に浸透した状態で、外気が乾燥すると水分が蒸発し、塩分だけが内部に残り、この繰り返しにより次第に塩分濃度が濃縮される。こうして鉄筋コンクリート構造物は年月を経てコンクリート内部の鉄筋が錆びてその構造物の本来の使用性と機能性を失うことがある。また鉄筋が膨張してコンクリート片として剥離落下し、第三者傷害の原因ともなる。
【０００４】
その対策として、土木学会発行のコンクリート標準示方書（維持管理編）には構造物の外観グレードにより、その標準的な工法を示している。
【０００５】
表１には構造物の外観上のグレードと劣化の状態が示されている。
【０００６】
【表１】

Figure 2004068522
【０００７】
表２には構造物の外観上のグレードと対策が示されている。
【０００８】
【表２】
Figure 2004068522
◎　：標準的な対策　　　○：場合によっては考えられる対策
（○）：予防的に実施される対策
【０００９】
表３には構造物の外観上のグレードと標準的な性能低下が示されている。
【００１０】
【表３】
Figure 2004068522
【００１１】
Figure 2004068522
【００１２】
Figure 2004068522
【００１３】
一般には塩害地区において塩害により鉄筋コンクリート構造物例えば橋梁の床版が輪荷重の増大により耐荷力が不足する場合は、機能性や使用性を保つため鋼板やＦＲＰ等の補強材をコンクリート面に接着する方法がある。また、桁や壁高欄などは、鉄筋の腐食や材料に起因するひび割れ等によるはく離、はく落を防止するために、ガラス繊維やビニロン等の合成繊維をクロス状にしたものを現場にて積層し補修材としてコンクリート面に接着する補修又は補強方法がある。
【００１４】
コンクリート中の鉄筋等の鋼材が塩分で腐食することを防止するための工法としては電気防食がある。
【００１５】
電気防食方法としては、線状陽極による電気防食方法とパネル陽極による電気防食方法がよく知られている。
【００１６】
【発明が解決しようとする課題】
しかしながら、上述したような電気防食方法と補修・補強方法とを併用するのは、つぎのような課題があった。
【００１７】
電気防食を施した構造物に、鋼板や炭素繊維シート等の導電性の補修・補強材で、補修又は補強を行うとすると、この補修・補強材と電気防食用の電極との距離が近かったり、補修・補強材と電極や番線等の鋼材とが部分接触したりすることにより、電気的短絡を起こしたり、補修・補強材に防食電流が流れ、設定した防食対象の鋼材への供給電流に障害を与えることがある。そのためコンクリートの鉄筋等の鋼材に適正な電流を供給できなくなることもある。
【００１８】
また、鋼板や炭素繊維シート等をコンクリート面に接着して覆って被覆してしまうと電極の電圧を高くしても塩素ガス等の発生に伴いガスブロッキング現象が生じ該電極から電流が流れにくくなり、コンクリートの鉄筋等の鋼材に適正な防食電流が供給できなくなることもある。
【００１９】
【課題を解決するための手段】
本発明者等は、鋭意研究を重ねた結果、以下に述べるような鉄筋コンクリート構造物において、上記課題を解決することのできる鉄筋コンクリート構造物の電気防食用補修・補強に用いられる電気絶縁補修・補強材及び鉄筋コンクリート構造物の電気防食併用補修・補強方法を発明した。
【００２０】
すなわち、本発明は、導電性補修・補強部材の片面に電気絶縁層を形成したことを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材を提供する。
【００２１】
本発明は、導電性補修・補強部材の片面に電気絶縁層を形成した電気絶縁補修・補強材であって、この電気絶縁補修・補強材を鉄筋コンクリート構造物のコンクリート面に取り付けたとき、該構造物のコンクリート面が適宜の間隔で露出する開口部を形成したことを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材を提供する。
【００２２】
本発明は、上記発明にあって、好ましくは、電気絶縁層が、光硬化性樹脂、ガラス繊維、不織布から選ばれることを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材を提供する。
【００２３】
本発明は、電極溝を形成し、この電極溝に電気防食用電極を位置させた鉄筋コンクリート構造物のコンクリート面に、片面に電気絶縁層を形成した電気絶縁補修・補強材をコンクリート面と電気絶縁層とを向かい合わせて取り付けたことを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強方法を提供する。
【００２４】
本発明は、電極溝を形成し、この電極溝に電気防食用電極を位置させた鉄筋コンクリート構造物のコンクリート面に、電気絶縁層を形成した後、電気絶縁層に導電性補修・補強部材を取り付けることを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強方法を提供する。
【００２５】
本発明は、上記発明にあって、電気絶縁補修・補強材又は電気絶縁層及び導電性補修・補強部材は、適宜の間隔でコンクリート面が露出するように開口部が形成されていることを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強方法を提供する。
【００２６】
【発明の実施の形態】
つぎに、本発明に係る鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材の実施の形態を図１乃至図５に基き説明する。
【００２７】
図１は、鋼板１の片面に電気絶縁層２を形成した電気絶縁補修・補強材１０を示す。電気絶縁層２は光硬化性樹脂により形成された光硬化型絶縁シートを鋼板１の上に貼着されて形成される。
【００２８】
図２は、炭素繊維シート１１の片面にガラス繊維や不織布を織り込んで電気絶縁層２を形成した電気絶縁補修・補強材１０を示す。
【００２９】
図３及び図４は、コンクリート構造物に取り付けたとき、該構造物のコンクリート面が、適宜の間隔で露出する開口部３が穿孔されて形成されている電気絶縁補修・補強材１０を示す。
【００３０】
この実施の形態において、電気絶縁補修・補強材１０は、上記の実施の形態と同様に鋼板１又は炭素繊維シート１１等の導電性補修・補強部材の片面に絶縁層２が形成され、上下を貫通する開口部３が適宜の間隔で穿孔されて開口されている。
【００３１】
開口部３を有する電気絶縁補修・補強材１０は、上述のような板状体によるものでなく、帯状体を格子状に組み合わせたものであってもよい。
【００３２】
電気絶縁補修・補強材１０に形成される開口部３は、後述する構造物２０の表面に形成された電極溝４に位置させた電気防食用電極５上に位置させるのが好ましい。
【００３３】
このようにして、いずれも全体として鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材が形成される。
【００３４】
つぎに、本発明に係る鉄筋コンクリート構造物の電気防食併用補修・補強方法を図５及び図６に基き説明する。
【００３５】
鉄筋コンクリート構造物２０のコンクリート面には図６に示すように定められた間隔で、電極溝４が形成され、この電極溝４に沿って線状の電気防食用電極５が挿入される。電気防食用電極５は必要に応じて充填材６によって埋設されて固定される。
【００３６】
鉄筋コンクリート構造物２０と上述の電気絶縁補修・補強材とは、図７に示すように、鉄筋コンクリート構造物２０のコンクリート面に電気絶縁補修・補強材１０を開口３が、電気防食用電極５上に位置するようにして公知の方法、例えばエポキシ樹脂系の接着剤７又はコンクリートアンカーで取り付ける。この実施の形態では、鉄筋コンクリート構造物２０のコンクリート面に取り付ける電気絶縁補修・補強材１０は、開口部３を形成したものを用いたが、開口部３が形成されていない電気絶縁補修・補強材１０にあっても同様に接着剤７又はコンクリートアンカーで取り付けることで電気防食併用補修・補強方法を実施できる。
【００３７】
上述の実施の形態は、鉄筋コンクリート構造物２０に電気絶縁補修・補強材を取り付けたが、つぎのように行うこともできる。
【００３８】
図７において、電極溝４を形成し、この電極溝４に電気防食用電極５を位置させた鉄筋コンクリート構造物２０に電気絶縁層２を接着剤７等により接着して形成したのち、この電気絶縁層２に鋼板１又は炭素繊維シート１１等の導電性補修・補強部材を貼着（貼着層は図示していない。）等により取り付ける。なお、図において３０は鉄筋である。
【００３９】
このようにして全体として、鉄筋コンクリート構造物の電気防食併用補修・補強方法が準備され、電極に通電することにより、埋設されている鉄筋等の鋼材に防食を施すとともに鉄筋コンクリート構造物の補修や補強を行うことができる。
【００４０】
【発明の効果】
本発明は、上述のようにしてなるので、つぎの効果を有する。
【００４１】
請求項１乃至請求項６において、鋼板や炭素繊維シート等の導電性補修・補強部材と電気防食用の電極との距離が近かったり、電極と該補修・補強部材とが接触することによる電気的短絡や防食対象の鋼材への供給電流の障害を防止することができる。
【００４２】
請求項２乃至請求項６において、塩素ガス等の発生に伴うブロッキング現象を減少させることができる。
【図面の簡単な説明】
【図１】電気絶縁層を形成した電気絶縁補修・補強材の一実施の形態を示す断面図である。
【図２】電気絶縁層を形成した電気絶縁補修・補強材の別の実施の形態を示す断面図である。
【図３】電気絶縁層を形成した電気絶縁補修・補強材のさらに別の実施の形態を示す平面図である。
【図４】同断面図である。
【図５】鉄筋コンクリート構造物に電気防食用電極を配置した概略図である。
【図６】鉄筋コンクリート構造物に電気防食併用補修・補強方法を実施する手順を説明する断面図である。
【符号の説明】
１　　導電性補修・補強部材としての鋼板
２　　電気絶縁層
３　　開口部
４　　電極溝
５　　電気防食用電極
６　　充填材
７　　接着剤
１０　電気絶縁補修・補強材
２０　鉄筋コンクリート構造物
３０　鉄筋[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electrical insulation repair / reinforcing material used for repair / reinforcement of a reinforced concrete structure together with an electrolytic protection for the purpose of preventing deterioration of a reinforced concrete structure buried by corrosion, and a combined use of an electrolytic protection and a repair of a reinforced concrete structure. -Reinforcement method.
[0002]
[Prior art]
There were times when reinforced concrete structures were considered to be immortal, but in recent years concrete for reinforced concrete structures that have passed through years has become a concrete piece due to various reasons such as cold joints, neutralization, salt damage or poor construction. Water has leaked due to peeling, falling and cracking, and has become a social problem.
[0003]
Particularly, in a reinforced concrete structure in a salt-damaged area, salt adheres to the concrete surface. When the outside air dries while the salt has penetrated into the interior of the concrete, the moisture evaporates, and only the salt remains inside, and the repetition of the process gradually increases the salt concentration. Thus, the reinforced concrete structure may lose its original usability and functionality over time due to the rust of the reinforcing steel inside the concrete. In addition, the reinforcing bar expands and peels off as concrete pieces, which may cause injury to third parties.
[0004]
As a countermeasure, the standard specification method for concrete issued by the Japan Society of Civil Engineers (Maintenance and Management) shows the standard construction method according to the appearance grade of the structure.
[0005]
Table 1 shows the appearance grade and the state of deterioration of the structure.
[0006]
[Table 1]
Figure 2004068522
[0007]
Table 2 shows the grade and countermeasures on the appearance of the structure.
[0008]
[Table 2]
Figure 2004068522
◎: Standard countermeasures ○: Possible countermeasures (○): Preventive countermeasures [0009]
Table 3 shows the appearance grade of the structure and the typical performance degradation.
[0010]
[Table 3]
Figure 2004068522
[0011]
Figure 2004068522
[0012]
Figure 2004068522
[0013]
Generally, when a reinforced concrete structure, such as a bridge slab, has insufficient load-bearing capacity due to an increase in wheel load due to salt damage in a salt-damaged area, a reinforcing material such as a steel plate or FRP is bonded to the concrete surface to maintain functionality and usability. There is a way. In addition, girder and wall columns are repaired by laminating cloth made of synthetic fiber such as glass fiber or vinylon at the site to prevent peeling and peeling due to corrosion of reinforcing steel and cracks caused by material. As a material, there is a repair or reinforcement method of bonding to a concrete surface.
[0014]
As a method for preventing steel materials such as reinforcing steel in concrete from being corroded by salt, there is an electrolytic protection method.
[0015]
As the cathodic protection method, a cathodic protection method using a linear anode and a cathodic protection method using a panel anode are well known.
[0016]
[Problems to be solved by the invention]
However, using the above-described cathodic protection method and the repair / reinforcement method together has the following problems.
[0017]
When repairing or reinforcing a structure that has been subjected to cathodic protection with a conductive repairing or reinforcing material such as a steel plate or carbon fiber sheet, the distance between the repairing / reinforcing material and the electrode for cathodic protection may be short. When the repair / reinforcement material and the steel material such as the electrode and wire are in partial contact with each other, an electrical short circuit may occur, or the corrosion / protection current may flow through the repair / reinforcement material, and the supply current to the set corrosion-resistant steel material may be reduced. May cause disability. As a result, it may not be possible to supply an appropriate electric current to steel materials such as concrete reinforcing bars.
[0018]
Also, if a steel plate or a carbon fiber sheet is adhered and covered on the concrete surface and covered, even if the voltage of the electrode is increased, a gas blocking phenomenon occurs due to the generation of chlorine gas and the like, and it becomes difficult for current to flow from the electrode. In some cases, an appropriate anticorrosion current cannot be supplied to steel materials such as concrete reinforcing bars.
[0019]
[Means for Solving the Problems]
The present inventors have conducted intensive studies and as a result, in a reinforced concrete structure as described below, an electric insulation repair / reinforcement material used for repair / reinforcement for cathodic protection of a reinforced concrete structure capable of solving the above-mentioned problems. And a method of repairing and reinforcing reinforced concrete structures in combination with electrolytic protection.
[0020]
That is, the present invention provides an electrical insulation repair / reinforcement material used for repair / reinforcement of a reinforced concrete structure in combination with anticorrosion, wherein an electrical insulation layer is formed on one surface of a conductive repair / reinforcement member.
[0021]
The present invention is an electrical insulation repair / reinforcement material in which an electrical insulation layer is formed on one surface of a conductive repair / reinforcement member. When the electrical insulation repair / reinforcement material is attached to a concrete surface of a reinforced concrete structure, Provided is an electrical insulation repair / reinforcement material used for repair / reinforcement of a reinforced concrete structure in combination with anticorrosion, wherein openings are formed such that the concrete surface of the object is exposed at appropriate intervals.
[0022]
The present invention according to the above invention, wherein the electric insulating layer is preferably used for repairing and reinforcing the reinforced concrete structure together with the anticorrosion of the reinforced concrete structure, wherein the electric insulating layer is selected from a photocurable resin, a glass fiber, and a nonwoven fabric. Provide repair and reinforcement materials.
[0023]
The present invention provides an electric insulation repair / reinforcing material having an electric insulating layer formed on one side on a concrete surface of a reinforced concrete structure having an electrode groove formed therein and an electrode for preventing corrosion positioned in the electrode groove, and electrically insulating the concrete surface from the concrete surface. The present invention provides a method for repairing and reinforcing a reinforced concrete structure in combination with anticorrosion, wherein the layers are attached to face each other.
[0024]
The present invention forms an electrode groove, and after forming an electric insulating layer on a concrete surface of a reinforced concrete structure in which an electrode for cathodic protection is located in the electrode groove, attaches a conductive repair / reinforcement member to the electric insulating layer. The present invention provides a method for repairing and reinforcing reinforced concrete structures in combination with electrolytic protection.
[0025]
The present invention, in the above invention, is characterized in that the electrical insulation repair / reinforcement material or the electrical insulation layer and the conductive repair / reinforcement member are formed with openings so that the concrete surface is exposed at appropriate intervals. The present invention provides a method of repairing and reinforcing reinforced concrete structures in combination with anticorrosion.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of an electrical insulation repair / reinforcement material used for repair / reinforcement of a reinforced concrete structure in combination with electrical protection in accordance with the present invention will be described with reference to FIGS.
[0027]
FIG. 1 shows an electrical insulation repair / reinforcement material 10 in which an electrical insulation layer 2 is formed on one surface of a steel plate 1. The electric insulating layer 2 is formed by adhering a photocurable insulating sheet formed of a photocurable resin on the steel plate 1.
[0028]
FIG. 2 shows an electrical insulation repair / reinforcement material 10 in which glass fiber or nonwoven fabric is woven on one side of a carbon fiber sheet 11 to form an electrical insulation layer 2.
[0029]
FIGS. 3 and 4 show the electrical insulation repair / reinforcing material 10 in which a concrete surface of the structure is formed by drilling openings 3 that are exposed at appropriate intervals when the structure is attached to the structure.
[0030]
In this embodiment, the electrical insulation repair / reinforcement material 10 has an insulating layer 2 formed on one surface of a conductive repair / reinforcement member such as a steel plate 1 or a carbon fiber sheet 11 in the same manner as in the above-described embodiment. Opening portions 3 that penetrate are opened at appropriate intervals.
[0031]
The electrical insulation repair / reinforcement member 10 having the opening 3 is not limited to the plate-like member as described above, but may be a combination of band-like members in a lattice shape.
[0032]
The opening 3 formed in the electrical insulation repair / reinforcing material 10 is preferably located on the electrode 5 for preventing corrosion located in the electrode groove 4 formed on the surface of the structure 20 described later.
[0033]
In this way, the electrical insulation repair / reinforcement material used for repair / reinforcement of the reinforced concrete structure as well as the electrical protection is formed.
[0034]
Next, a method of repairing / reinforcing a reinforced concrete structure in combination with electrolytic protection according to the present invention will be described with reference to FIGS.
[0035]
Electrode grooves 4 are formed on the concrete surface of the reinforced concrete structure 20 at predetermined intervals as shown in FIG. 6, and a linear cathodic protection electrode 5 is inserted along the electrode grooves 4. The electrode 5 is buried and fixed by a filler 6 as necessary.
[0036]
As shown in FIG. 7, the reinforced concrete structure 20 and the above-mentioned electric insulation repair / reinforcement material are formed by opening the electric insulation repair / reinforcement material 10 on the concrete surface of the reinforced concrete structure 20 and opening the electric protection / corrosion prevention electrode 5 on the concrete surface. It is mounted in a known manner, for example with an epoxy resin adhesive 7 or a concrete anchor. In this embodiment, the electric insulation repair / reinforcement material 10 having the opening 3 is used as the electric insulation repair / reinforcement material 10 attached to the concrete surface of the reinforced concrete structure 20, but the electric insulation repair / reinforcement material having no opening 3 is used. Even in the case of 10, it is possible to carry out the repair / reinforcement method in combination with the anticorrosion by similarly attaching with an adhesive 7 or a concrete anchor.
[0037]
In the above-described embodiment, the electrical insulation repair / reinforcement material is attached to the reinforced concrete structure 20, but it can be performed as follows.
[0038]
In FIG. 7, an electrode groove 4 is formed, and an electric insulating layer 2 is formed by bonding an electric insulating layer 2 with an adhesive 7 or the like to a reinforced concrete structure 20 in which the electrode 5 is positioned in the electrode groove 4. A conductive repair / reinforcement member such as a steel sheet 1 or a carbon fiber sheet 11 is attached to the layer 2 by attaching (an attaching layer is not shown). In the figure, reference numeral 30 denotes a reinforcing bar.
[0039]
In this way, as a whole, a method of repairing and reinforcing the reinforced concrete structure together with the electrical protection is prepared.By energizing the electrodes, the steel material such as the embedded reinforcing steel is protected and the repair and reinforcement of the reinforced concrete structure is performed. It can be carried out.
[0040]
【The invention's effect】
Since the present invention is configured as described above, it has the following effects.
[0041]
7. The electric device according to claim 1, wherein the distance between the conductive repair / reinforcement member such as a steel plate or a carbon fiber sheet and the electrode for cathodic protection is short, or the electrode is in contact with the repair / reinforcement member. It is possible to prevent short-circuits and disturbances in the supply current to the corrosion-resistant steel material.
[0042]
In the second to sixth aspects, the blocking phenomenon caused by the generation of chlorine gas or the like can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of an electrical insulation repair / reinforcement material having an electrical insulation layer formed thereon.
FIG. 2 is a cross-sectional view showing another embodiment of an electric insulation repair / reinforcement member having an electric insulating layer formed thereon.
FIG. 3 is a plan view showing still another embodiment of an electric insulation repair / reinforcement member having an electric insulating layer formed thereon.
FIG. 4 is a sectional view of the same.
FIG. 5 is a schematic view in which electrodes for cathodic protection are arranged on a reinforced concrete structure.
FIG. 6 is a cross-sectional view for explaining a procedure for carrying out a repair / reinforcement method combined with electrolytic protection on a reinforced concrete structure.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 steel plate as conductive repairing / reinforcing member 2 electric insulating layer 3 opening 4 electrode groove 5 electrode for anticorrosion 6 filler 7 adhesive 10 electrical repairing / reinforcing material 20 reinforced concrete structure 30 rebar

Claims (6)

導電性補修・補強部材の片面に電気絶縁層を形成したことを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材。An electrical insulation repair / reinforcement material for use in repair / reinforcement of a reinforced concrete structure in combination with electrical protection, wherein an electrical insulation layer is formed on one surface of a conductive repair / reinforcement member. 導電性補修・補強部材の片面に電気絶縁層を形成した電気絶縁補修・補強材であって、この電気絶縁補修・補強材を鉄筋コンクリート構造物のコンクリート面に取り付けたとき、該構造物のコンクリート面が適宜の間隔で露出する開口部を形成したことを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材。An electrical insulation repair / reinforcement material having an electrical insulation layer formed on one surface of a conductive repair / reinforcement member. When the electrical insulation repair / reinforcement material is attached to a concrete surface of a reinforced concrete structure, An electrical insulation repair / reinforcing material used for repair / reinforcement of a reinforced concrete structure in combination with anticorrosion, wherein openings are formed to be exposed at appropriate intervals. 電気絶縁層は、光硬化性樹脂、ガラス繊維、不織布から選ばれることを特徴とする請求項１又は請求項２に記載の鉄筋コンクリート構造物の電気防食併用補修・補強に用いられる電気絶縁補修・補強材。3. The electrical insulation repair / reinforcement used for repair / reinforcement of the reinforced concrete structure in combination with the electrical protection as claimed in claim 1 or 2, wherein the electrical insulation layer is selected from a photocurable resin, a glass fiber and a nonwoven fabric. Wood. 電極溝を形成し、この電極溝に電気防食用電極を位置させた鉄筋コンクリート構造物のコンクリート面に、片面に電気絶縁層を形成した電気絶縁補修・補強材をコンクリート面と電気絶縁層とを向かい合わせて取り付けたことを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強方法。An electrode groove is formed, and an electrical insulation repair / reinforcement material having an electrical insulation layer formed on one side is placed on the concrete surface of the reinforced concrete structure where the electrode for cathodic protection is located in the electrode groove, facing the concrete surface and the electrical insulation layer. A method for repairing and reinforcing reinforced concrete structures in combination with electric protection, characterized by being installed together. 電極溝を形成し、この電極溝に電気防食用電極を位置させた鉄筋コンクリート構造物のコンクリート面に、電気絶縁層を形成した後、電気絶縁層に導電性補修・補強部材を取り付けることを特徴とする鉄筋コンクリート構造物の電気防食併用補修・補強方法。Forming an electrode groove, forming an electric insulating layer on the concrete surface of the reinforced concrete structure where the electrode for cathodic protection is located in the electrode groove, and then attaching a conductive repair / reinforcement member to the electric insulating layer. Repair / reinforcement method for reinforced concrete structures with electric protection. 電気絶縁補修・補強材又は電気絶縁層及び導電性補修・補強部材は、適宜の間隔でコンクリート面が露出するように開口部が形成されていることを特徴とする請求項４又は請求項５に記載の鉄筋コンクリート構造物の電気防食併用補修・補強方法。The electrical insulation repair / reinforcement material or the electrical insulation layer and the conductive repair / reinforcement member have openings formed at appropriate intervals so that the concrete surface is exposed. Repair / reinforcement method of the reinforced concrete structure in combination with anticorrosion.
JP2002232659A 2002-08-09 2002-08-09 Electrical insulation repair / reinforcing materials used for repair and reinforcement of reinforced concrete structures combined with anticorrosion and methods of repair / reinforcement for reinforced concrete structures combined with electrical protection Expired - Fee Related JP3808017B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002232659A JP3808017B2 (en) 2002-08-09 2002-08-09 Electrical insulation repair / reinforcing materials used for repair and reinforcement of reinforced concrete structures combined with anticorrosion and methods of repair / reinforcement for reinforced concrete structures combined with electrical protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002232659A JP3808017B2 (en) 2002-08-09 2002-08-09 Electrical insulation repair / reinforcing materials used for repair and reinforcement of reinforced concrete structures combined with anticorrosion and methods of repair / reinforcement for reinforced concrete structures combined with electrical protection

Publications (2)

Publication Number Publication Date
JP2004068522A true JP2004068522A (en) 2004-03-04
JP3808017B2 JP3808017B2 (en) 2006-08-09

Family

ID=32017989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002232659A Expired - Fee Related JP3808017B2 (en) 2002-08-09 2002-08-09 Electrical insulation repair / reinforcing materials used for repair and reinforcement of reinforced concrete structures combined with anticorrosion and methods of repair / reinforcement for reinforced concrete structures combined with electrical protection

Country Status (1)

Country Link
JP (1) JP3808017B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006045917A (en) * 2004-08-04 2006-02-16 Nippon Steel Composite Co Ltd Reinforcing method of concrete structure buried in ground and reinforced concrete structure
JP2007039996A (en) * 2005-08-03 2007-02-15 Nippon Steel Composite Co Ltd Method of reinforcing and corrosion-preventing concrete structure, and reinforcing/anticorrosion material
JP2010069795A (en) * 2008-09-19 2010-04-02 Anan Denki Kk Sheet for repairing member, and method for repairing member
JP2014015652A (en) * 2012-07-06 2014-01-30 Sumitomo Osaka Cement Co Ltd Method for producing concrete structure and concrete structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006045917A (en) * 2004-08-04 2006-02-16 Nippon Steel Composite Co Ltd Reinforcing method of concrete structure buried in ground and reinforced concrete structure
JP4582771B2 (en) * 2004-08-04 2010-11-17 新日鉄マテリアルズ株式会社 Method for reinforcing concrete structure embedded in the ground and reinforced concrete structure
JP2007039996A (en) * 2005-08-03 2007-02-15 Nippon Steel Composite Co Ltd Method of reinforcing and corrosion-preventing concrete structure, and reinforcing/anticorrosion material
JP2010069795A (en) * 2008-09-19 2010-04-02 Anan Denki Kk Sheet for repairing member, and method for repairing member
JP2014015652A (en) * 2012-07-06 2014-01-30 Sumitomo Osaka Cement Co Ltd Method for producing concrete structure and concrete structure

Also Published As

Publication number Publication date
JP3808017B2 (en) 2006-08-09

Similar Documents

Publication Publication Date Title
EP0411008A1 (en) Inhibiting corrosion in reinforced concrete
US20100038261A1 (en) Composite anode for cathodic protection
JP2004068522A (en) Electric insulation repair/reinforcement material and method for common use in electric protection for reinforced concrete structure
JP5798877B2 (en) Electrical protection method for bridge girder edge
JP6393601B2 (en) Simple repair method and simple repair structure of reinforced concrete structure without sacrificial section repair using sacrificial anode material
US8745957B2 (en) Induced macro-cell corrosion prevention method
US20150284860A1 (en) Protection of steel reinforced concrete elements
US20120000769A1 (en) Electrode structure for protection of structural bodies
JP3658574B2 (en) Cross-section repair panel for preventing deterioration of reinforced concrete structure and method for preventing deterioration of reinforced concrete structure
US20190119819A1 (en) Method for laying an anode system for cathodic corrosion protection
JP5424127B2 (en) Method of attaching an anticorrosion electrode to a concrete structure, and concrete structure
US7306687B2 (en) Method for repairing steel-reinforced concrete structure
JP2004052061A (en) Frame mold panel for electric protection of reinforced concrete structure and electric protection method for reinforced concrete structure
JP2012237037A (en) Electrolytic protection method for bridge girder end
JP2003166083A (en) Method for preventing deterioration of reinforced concrete structure
JPH02209494A (en) Galvanic anode material for preventing corrosion of reinforced concrete and method for electrolytically protecting reinforced concrete structure with the same
Westfall et al. Patterns of trombiculid mite (Hannemania dunni) parasitism among plethodontid salamanders in the western Piedmont of North Carolina
Whitmore Extending the Service Life of Existing Concrete Structures to Last Beyond 100 Years
JP2006206953A (en) Method for installing anode for electric corrosion protection
JP2003027607A (en) Electrical protection method for reinforced concrete structure
JP2000026174A (en) Method for preventing corrosion of reinforcing bar in concrete
JP3779657B2 (en) Electrodes for anticorrosion of reinforced concrete structures and methods for preventing electrical short circuit in galvanic protection of reinforced concrete structures
JP2004190119A (en) Corrosion-preventive reinforced concrete assembly, and corrosion-preventing method and assembling method therefor
KR20030037336A (en) Method for cathodic protection-repairing of steel-reinforced concrete structures
CN216276388U (en) Carbon fiber grid ICCP-SS steel bar seawater sea sand concrete laminated slab

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040820

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050816

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051012

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060124

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060323

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060419

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060516

R150 Certificate of patent or registration of utility model

Ref document number: 3808017

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090526

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120526

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150526

Year of fee payment: 9

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150526

Year of fee payment: 9

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees