JP5644186B2 - Electrocorrosion protection electrode and concrete structure construction method - Google Patents
Electrocorrosion protection electrode and concrete structure construction method Download PDFInfo
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Description
本発明は、電気防食用電極及びコンクリート構造物の施工方法に関する。 The present invention relates to an electrode for cathodic protection and a method for constructing a concrete structure.
従来におけるコンクリート構造物の施工方法としては、図４に示すように、基礎スラブコンクリートの打設前に、捨てコンクリート１０上に電気防食用のＭＭＯ(Mixed Metal Oxide：複合金属酸化物)アノード電極１１を敷設し、その上部にスラブ鉄筋１２を組み立て、スラブ鉄筋１２とＭＭＯアノード電極１１との電気的な短絡が無いことを確認した後、基礎スラブコンクリートを打設するという施工方法が知られている。 As a conventional construction method of a concrete structure, as shown in FIG. 4, before placing the foundation slab concrete, an MMO (Mixed Metal Oxide) anode electrode 11 for cathodic protection is disposed on the discarded concrete 10. A construction method is known in which a slab rebar 12 is assembled on the top, and after confirming that there is no electrical short circuit between the slab rebar 12 and the MMO anode electrode 11, a foundation slab concrete is placed. .
一般的なＭＭＯアノード電極１１は、チタン等の非消耗金属を主成分とするＭＭＯ細線をメッシュ状に織り込んで薄板状に形成したものであることが多い。電気防食とは、このようなＭＭＯアノード電極１１に正極性の電圧を印加すると共に、スラブ鉄筋１２に負極性の電圧を印加して、ＭＭＯアノード電極１１とスラブ鉄筋１２との間に電位差を生じさせることにより、スラブ鉄筋１２の腐食を防止する技術である。 The general MMO anode electrode 11 is often formed in a thin plate shape by weaving MMO fine wires mainly composed of a non-consumable metal such as titanium into a mesh shape. In the anticorrosion, a positive voltage is applied to the MMO anode electrode 11 and a negative voltage is applied to the slab rebar 12 to generate a potential difference between the MMO anode electrode 11 and the slab rebar 12. This is a technique for preventing the slab rebar 12 from being corroded.
ＭＭＯアノード電極１１とスラブ鉄筋１２との間の距離（ギャップ）は、両者間に生じさせる電位差やコンクリートの成分等に応じて理論的に導出することが可能であり、施工時においては、予め理論的に求めておいたギャップを目標として、ＭＭＯアノード電極１１上の所定位置にスラブ鉄筋１２を組み立てることになる。この時、図４に示すように、スラブ鉄筋１２同士を結束する番線１３がＭＭＯアノード電極１１に接触しただけで、スラブ鉄筋１２とＭＭＯアノード電極１１との電気的な短絡が生じてしまい、その原因特定に大きな労力と時間を費やすことになるため、スラブ鉄筋１２の組み立てには細心の注意を払う必要がある。 The distance (gap) between the MMO anode electrode 11 and the slab reinforcing bar 12 can be theoretically derived according to the potential difference generated between the two and the components of the concrete. The slab rebar 12 is assembled at a predetermined position on the MMO anode electrode 11 with the target gap as a target. At this time, as shown in FIG. 4, the wire 13 that binds the slab reinforcing bars 12 to the MMO anode electrode 11 causes an electrical short circuit between the slab reinforcing bar 12 and the MMO anode electrode 11. Since much labor and time are spent identifying the cause, it is necessary to pay close attention to the assembly of the slab rebar 12.
これに対し、例えば下記特許文献１には、鉄筋コンクリート部材の表面を覆うように絶縁性材料からなる網状部材を取り付け、当該網状部材に電気防食用の陽極を重ねて取り付け、さらに、上記網状部材及び陽極を埋め込むと共に鉄筋コンクリート部材の表面と付着するように被覆層を形成することで、鉄筋と電気防食用の陽極との電気的な短絡を防ぐ技術が開示されている。 On the other hand, for example, in Patent Document 1 below, a mesh member made of an insulating material is attached so as to cover the surface of the reinforced concrete member, and an anode for cathodic protection is attached to the mesh member, and the mesh member and A technique for preventing an electrical short circuit between a reinforcing bar and an anode for cathodic protection is disclosed by embedding an anode and forming a coating layer so as to adhere to the surface of a reinforced concrete member.
上記特許文献１の技術では、コンクリート構造物の施工工程として、網状部材の取り付け工程及び被覆層の形成工程を新たに追加する必要があるため、施工工程の複雑化及び施工期間の長期化を招く虞がある。 In the technique of the above-mentioned Patent Document 1, it is necessary to newly add a mesh member attaching process and a covering layer forming process as a concrete structure construction process, resulting in a complicated construction process and a prolonged construction period. There is a fear.
本発明は上述した事情に鑑みてなされたものであり、施工工程の複雑化及び施工期間の長期化を招くことなく、電気防食用電極と鉄筋との電気的な短絡を容易に防止することが可能な電気防食用電極及びコンクリート構造物の施工方法を提供することを目的とする。 The present invention has been made in view of the circumstances described above, and can easily prevent an electrical short circuit between the electrode for corrosion protection and the reinforcing bar without complicating the construction process and prolonging the construction period. An object of the present invention is to provide an electrode for corrosion protection and a method for constructing a concrete structure.
上記課題を解決するために、本発明では、電気防食用電極に係る第１の解決手段として、電気防食用金属材料から形成された板状の電極部材と、前記電極部材を覆うように形成された可撓性及び絶縁性を有する保護部材とを具備し、前記保護部材の表面には前記電極部材まで貫通する複数の孔が形成されていることを特徴とする。
また、本発明では、電気防食用電極に係る第２の解決手段として、上記第１の解決手段において、前記保護材の内部は層構造となっており、前記電極部材に接する層の表面には前記電極部材まで貫通する複数の孔が形成され、他の層の表面には下層まで貫通し且つ下層表面に形成された孔と重ならないように複数の孔が形成されていることを特徴とする。
また、本発明では、電気防食用電極に係る第３の解決手段として、上記第１または第２の解決手段において、前記電気防食用金属材料は、チタンを主成分とする複合金属酸化物であることを特徴とする。
In order to solve the above problems, in the present invention, as a first solution means for an electrode for electrocorrosion protection, a plate-like electrode member formed from a metal material for electrocorrosion protection is formed so as to cover the electrode member. And a protective member having flexibility and insulation, and a plurality of holes penetrating to the electrode member are formed on the surface of the protective member.
Further, in the present invention, as a second solution for the electrode for anticorrosion, in the first solution, the inside of the protective material has a layer structure, and the surface of the layer in contact with the electrode member A plurality of holes penetrating to the electrode member are formed, and a plurality of holes are formed on the surface of the other layer so as to penetrate to the lower layer and not overlap with the holes formed on the surface of the lower layer. .
In the present invention, as a third solution for the electrode for electrode protection, in the first or the second solution, the metal material for electrode protection is a composite metal oxide mainly composed of titanium. It is characterized by that.
一方、本発明では、コンクリート構造物の施工方法に係る第１の解決手段として、下層側コンクリート上に上記第１〜第３のいずれかの解決手段を有する電気防食用電極を敷設する第１の工程と、前記電気防食用電極の敷設後に鉄筋を組み立てる第２の工程と、前記鉄筋の組み立て後に上層側コンクリートを打設する第３の工程とを含むことを特徴とする。
また、本発明では、コンクリート構造物の施工方法に係る第２の解決手段として、上記第１の解決手段において、前記下層側コンクリートは捨てコンクリートであり、前記鉄筋はスラブ鉄筋であり、前記上層側コンクリートは基礎スラブコンクリートであることを特徴とする。
On the other hand, in the present invention, as the first solving means relating to the construction method of the concrete structure, the first anticorrosion electrode having any one of the first to third solving means is laid on the lower-layer side concrete. A step, a second step of assembling a reinforcing bar after laying the electrode for anticorrosion, and a third step of placing an upper-layer side concrete after assembling the reinforcing bar.
In the present invention, as the second solving means relating to the construction method of the concrete structure, in the first solving means, the lower layer side concrete is discarded concrete, the reinforcing bar is a slab reinforcing bar, and the upper layer side The concrete is basic slab concrete.
本発明に係る電気防食用電極は、電気防食用金属材料から形成された電極部材を可撓性及び絶縁性を有する保護部材によって覆うという構成を採用している。このような構成の電気防食用電極をコンクリート構造物の施工時に使用することで、番線と電極部材との接触、つまり鉄筋と電極部材との電気的な短絡を防止することができる。この時、本発明に係る電気防食用電極を従来と同様に下層側コンクリート上に敷設するだけで良いので、特別な工程を追加する必要はなく、その結果、施工工程の複雑化及び施工期間の長期化を招くことなく、電気防食用電極と鉄筋との電気的な短絡を容易に防止することが可能となる。 The electrode for cathodic protection according to the present invention employs a configuration in which an electrode member formed of a metal material for cathodic protection is covered with a protective member having flexibility and insulation. By using the electrode for anticorrosion having such a configuration at the time of constructing the concrete structure, it is possible to prevent the contact between the wire and the electrode member, that is, the electrical short circuit between the reinforcing bar and the electrode member. At this time, it is only necessary to lay the electrode for cathodic protection according to the present invention on the lower side concrete as in the conventional case, so there is no need to add a special process, and as a result, the construction process becomes complicated and the construction period is reduced. It is possible to easily prevent an electrical short circuit between the electrode for anticorrosion and the reinforcing bar without causing a long period of time.
以下、図面を参照して、本発明の一実施形態について説明する。
図１は、本実施形態における電気防食用電極Ａの構成概略図である。この図１に示すように、本実施形態における電気防食用電極Ａは、ＭＭＯアノード電極部材１及び保護部材２から構成されている。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of an electrode for electrode protection A in the present embodiment. As shown in FIG. 1, the electrode A for anticorrosion in the present embodiment is composed of an MMO anode electrode member 1 and a protection member 2.
ＭＭＯアノード電極部材１は、電気防食用金属材料として例えばチタン等の非消耗金属を主成分とするＭＭＯ細線をメッシュ状に織り込んで薄板状に形成された電極部材である。なお、このＭＭＯアノード電極部材１としては、上記のように、チタン等の非消耗金属を主成分とするＭＭＯ細線をメッシュ状に織り込んで薄板状に形成したものを使用しても良いし、ＭＭＯそのものを薄板状に形成したものを使用しても良い。また、電気防食用金属材料としては、チタン等の非消耗金属を主成分とするＭＭＯだけでなく、被防食物である鉄筋（鉄）より自然電位が高ければ、ニッケル、鉛、錫、銅、銀、金、白金など及びこれらの合金材を使用しても良い。 The MMO anode electrode member 1 is an electrode member formed in a thin plate shape by weaving MMO fine wires mainly composed of a non-consumable metal such as titanium as a metal material for cathodic protection. As the MMO anode electrode member 1, as described above, an MMO thin wire formed by weaving an MMO fine wire mainly composed of a non-consumable metal such as titanium into a mesh shape may be used. You may use what formed itself in the shape of a thin plate. In addition, as a metal material for cathodic protection, not only MMO whose main component is non-consumable metal such as titanium, but also nickel, lead, tin, copper, Silver, gold, platinum, etc. and their alloy materials may be used.
保護部材２は、ＭＭＯアノード電極部材１を覆うように形成された、例えばゴム或いはビニール等の可撓性及び絶縁性を有する部材である。この保護部材２の厚さは、必要な機械的強度に応じて適宜設定すれば良い。例えば、保護部材２としてポリ塩化ビニールを用いる場合、１ｍｍ以上の厚さに設定すれば機械的強度としては十分である。ただし、必要な柔軟性が損なわれない範囲で厚さを設定する必要がある。 The protection member 2 is a member having flexibility and insulation, such as rubber or vinyl, formed so as to cover the MMO anode electrode member 1. What is necessary is just to set the thickness of this protection member 2 suitably according to required mechanical strength. For example, when polyvinyl chloride is used as the protective member 2, the mechanical strength is sufficient if the thickness is set to 1 mm or more. However, it is necessary to set the thickness within a range that does not impair the necessary flexibility.
また、この保護部材２の表面には、図１に示すように、ＭＭＯアノード電極部材１までまで貫通する複数の孔３が形成されている。これらの孔３は、ＭＭＯアノード電極部材１から被防食体であるスラブ鉄筋１２（後述の図２参照）に対して電位を与えるために設けられたものである。孔３の数を多くし過ぎると、スラブ鉄筋１２の組み立て作業中、或いは基礎スラブコンクリート１４（後述の図２参照）の打設作業中に番線１３が孔３に侵入してＭＭＯアノード電極部材１と接触する、つまりスラブ鉄筋１２とＭＭＯアノード電極部材１とが電気的に短絡する虞がある。そのため、保護部材２の表面の開口率が５０％程度となるように孔３の数を設定することが好ましい。 Further, as shown in FIG. 1, a plurality of holes 3 penetrating to the MMO anode electrode member 1 are formed on the surface of the protective member 2. These holes 3 are provided in order to apply a potential from the MMO anode electrode member 1 to the slab reinforcing bars 12 (see FIG. 2 described later) that are to be protected. If the number of the holes 3 is excessively increased, the wire 13 penetrates into the holes 3 during the assembling operation of the slab reinforcing bars 12 or the foundation slab concrete 14 (see FIG. 2 described later), and the MMO anode electrode member 1 That is, the slab reinforcing bar 12 and the MMO anode electrode member 1 may be electrically short-circuited. Therefore, it is preferable to set the number of holes 3 so that the aperture ratio of the surface of the protective member 2 is about 50%.
以上が本実施形態における電気防食用電極Ａの構成に関する説明であり、以下ではこの電気防食用電極Ａを用いたコンクリート構造物の施工方法について、図２を参照しながら具体的に説明する。 The above is description regarding the structure of the electrode A for anticorrosion in this embodiment, and below, the concrete construction method using this electrode A for anticorrosion is demonstrated concretely, referring FIG.
図２は、本実施形態におけるコンクリート構造物の施工方法の各工程を表す模式図である。この図２において、図４と共通する部分には同一符号を付すものとする。まず、コンクリート構造物の施工方法における第１の工程として、図２（ａ）に示すように、下層側コンクリートとして予め打設された捨てコンクリート１０上に、図１に示した電気防食用電極Ａを敷設する。 Drawing 2 is a mimetic diagram showing each process of a construction method of a concrete structure in this embodiment. In FIG. 2, the same reference numerals are given to portions common to FIG. 4. First, as a first step in the method for constructing a concrete structure, as shown in FIG. 2 (a), the electrode A for anticorrosion shown in FIG. Laying.
続いて、コンクリート構造物の施工方法における第２の工程として、図２（ｂ）に示すように、電気防食用電極Ａの敷設後に、予め理論的に求めておいたＭＭＯアノード電極部材１とスラブ鉄筋１２との間の距離（ギャップ）を目標として、電気防食用電極Ａ上の所定位置にスラブ鉄筋１２を組み立てる。この時、図２（ｂ）に示すように、番線１３によるスラブ鉄筋１２同士の結束作業が行われるが、ＭＭＯアノード電極部材１は保護部材２によって覆われているため、番線１３がＭＭＯアノード電極部材１に接触する、つまりスラブ鉄筋１２とＭＭＯアノード電極部材１とが電気的に短絡することを防止することができる。 Subsequently, as a second step in the method of constructing the concrete structure, as shown in FIG. 2 (b), the MMO anode electrode member 1 and the slab, which have been theoretically obtained in advance after the galvanic protection electrode A is laid. The slab reinforcing bar 12 is assembled at a predetermined position on the electrode for anticorrosion A with the target of the distance (gap) between the reinforcing bars 12. At this time, as shown in FIG. 2 (b), the slab rebars 12 are bound together by the number wire 13, but since the MMO anode electrode member 1 is covered by the protective member 2, the number wire 13 is the MMO anode electrode. It is possible to prevent the slab rebar 12 and the MMO anode electrode member 1 from coming into contact with the member 1, ie, from being electrically short-circuited.
続いて、コンクリート構造物の施工方法における第３の工程として、図２（ｃ）に示すように、スラブ鉄筋１２の組み立て後に、上層側コンクリートとして基礎スラブコンクリート１４を打設する。このように、本実施形態における電気防食用電極Ａを使用することで、スラブ鉄筋１２の組み立て作業中、或いは基礎スラブコンクリート１４の打設作業中に、スラブ鉄筋１２とＭＭＯアノード電極部材１との電気的な短絡発生のリスクを完全に排除することができ、計画通りの費用と工程で残りの施工を続けることができる。 Subsequently, as a third step in the construction method of the concrete structure, as shown in FIG. 2C, after the slab rebar 12 is assembled, the foundation slab concrete 14 is placed as the upper-layer side concrete. Thus, by using the electrode A for anticorrosion in the present embodiment, the slab rebar 12 and the MMO anode electrode member 1 can be connected to each other during the assembly work of the slab rebar 12 or the foundation slab concrete 14. The risk of electrical shorts can be completely eliminated and the rest of the work can be continued at the planned cost and process.
以上説明したように、本実施形態では、ＭＭＯアノード電極部材１を可撓性及び絶縁性を有する保護部材２によって覆うという構成を採用した電気防食用電極Ａを、コンクリート構造物の施工時に使用することで、番線１３とＭＭＯアノード電極部材１との接触、つまりスラブ鉄筋１２とＭＭＯアノード電極部材１との電気的な短絡を防止することができる。この時、本実施形態における電気防食用電極Ａを従来と同様に捨てコンクリート１０上に敷設するだけで良いので、特別な工程を追加する必要はなく、その結果、施工工程の複雑化及び施工期間の長期化を招くことなく、電気防食用電極Ａ（ＭＭＯアノード電極部材１）とスラブ鉄筋１２との電気的な短絡を容易に防止することが可能となる。 As described above, in the present embodiment, the electrode for anticorrosion A that employs the configuration in which the MMO anode electrode member 1 is covered with the protective member 2 having flexibility and insulation is used during the construction of the concrete structure. Thus, contact between the wire 13 and the MMO anode electrode member 1, that is, an electrical short circuit between the slab reinforcing bar 12 and the MMO anode electrode member 1 can be prevented. At this time, since the electrode A for anticorrosion in the present embodiment only needs to be discarded and laid on the concrete 10 as in the conventional case, there is no need to add a special process, and as a result, the construction process is complicated and the construction period is increased. Therefore, it is possible to easily prevent an electrical short circuit between the electrode for anticorrosion A (MMO anode electrode member 1) and the slab reinforcing bar 12 without causing a long period of time.
なお、本発明は上記実施形態に限定されず、以下のような変形例が挙げられる。
（１）上記実施形態では、捨てコンクリート１０上に電気防食用電極Ａを敷設し、その上部にスラブ鉄筋１２を組み立てた後、基礎スラブコンクリート１４を打設する場合を例示して説明したが、本発明はこれに限らず、下層側コンクリート上に電気防食用電極を敷設する場合に、その上部に組み立てられる鉄筋との電気的な短絡を防止する技術として広く利用することができる。
In addition, this invention is not limited to the said embodiment, The following modifications are mentioned.
(1) In the above embodiment, the electrode A for anticorrosion is laid on the discarded concrete 10 and the slab rebar 12 is assembled on the upper part thereof, and then the case where the foundation slab concrete 14 is placed has been described. The present invention is not limited to this, and can be widely used as a technique for preventing an electrical short circuit with a reinforcing bar assembled on the upper part when an electrode for anticorrosion is laid on the lower concrete.
（２）上記実施形態では、図１に示したように、保護部材２によってＭＭＯアノード電極部材１を覆う構成を例示して説明したが、保護部材２の内部を層構造としても良い。図３は、保護部材２の内部を層構造（２層構造）とする電気防食用電極Ｂの構成概略図（断面図）である。この図３に示すように、本変形例における電気防食用電極Ｂでは、ＭＭＯアノード電極部材１に接する第１の層２ａの表面にはＭＭＯアノード電極部材１まで貫通する複数の第１の孔３ａが形成され、第２の層２ｂの表面には下層（第１の層２ａ）まで貫通し且つ下層表面に形成された第１の孔３ａと重ならないように複数の第２の孔３ｂが形成されている。なお、第１の層２ａ及び第２の層２ｂ共に、表面の開口率が５０％程度となるように第１の孔３ａ及び第２の孔３ｂの数を設定することが好ましい。 (2) In the above embodiment, as illustrated in FIG. 1, the configuration in which the MMO anode electrode member 1 is covered with the protection member 2 has been described as an example. However, the inside of the protection member 2 may have a layer structure. FIG. 3 is a schematic configuration diagram (cross-sectional view) of the electrode for anticorrosion B having a layer structure (two-layer structure) inside the protective member 2. As shown in FIG. 3, in the electrode for anticorrosion B in this modification, a plurality of first holes 3 a penetrating to the MMO anode electrode member 1 are formed on the surface of the first layer 2 a in contact with the MMO anode electrode member 1. A plurality of second holes 3b are formed on the surface of the second layer 2b so as to penetrate to the lower layer (first layer 2a) and not overlap with the first holes 3a formed on the lower layer surface. Has been. In addition, it is preferable to set the number of the first holes 3a and the second holes 3b so that the opening ratio of the surface of both the first layer 2a and the second layer 2b is about 50%.
このように保護部材２の内部を層構造とすることにより、スラブ鉄筋１２の組み立て作業中、或いは基礎スラブコンクリート１４の打設作業中に番線１３がＭＭＯアノード電極部材１と接触する可能性を低くすることができる。また、保護部材２の内部を３層構造、４層構造と多層構造にする程、番線１３がＭＭＯアノード電極部材１と接触する可能性をより低くすることができる。なお、保護部材２の内部を３層構造とした場合、各層表面の開口率が計算上６６．６％程度となるように、各層に孔３を形成することで、番線１３がＭＭＯアノード電極部材１と接触することをほぼ１００％の確率で防ぐことができる。 Thus, by making the inside of the protection member 2 into a layer structure, the possibility that the wire 13 contacts with the MMO anode electrode member 1 during the assembling operation of the slab rebar 12 or the placing operation of the foundation slab concrete 14 is reduced. can do. Further, as the inside of the protective member 2 has a three-layer structure, a four-layer structure, and a multilayer structure, the possibility that the wire 13 contacts the MMO anode electrode member 1 can be further reduced. When the inside of the protective member 2 has a three-layer structure, by forming the holes 3 in each layer so that the aperture ratio of the surface of each layer is calculated to be about 66.6%, the number wire 13 becomes the MMO anode electrode member. Contact with 1 can be prevented with a probability of almost 100%.
Ａ、Ｂ…電気防食用電極、１…ＭＭＯアノード電極部材（電極部材）、２…保護部材、３…孔、１０…捨てコンクリート（下層側コンクリート）、１２…スラブ鉄筋（鉄筋）、１３…番線、１４…基礎スラブコンクリート（上層側コンクリート） A, B ... Electrodes for anticorrosion, 1 ... MMO anode electrode member (electrode member), 2 ... Protective member, 3 ... Hole, 10 ... Discarded concrete (lower concrete), 12 ... Slab rebar (rebar), 13 ... Wire , 14 ... Foundation slab concrete (upper concrete)
Claims (5)
電気防食用金属材料から形成された板状の電極部材と、
前記電極部材を覆うように形成された可撓性及び絶縁性を有する保護部材と、
を具備し、
前記下層側コンクリートに接する前記保護部材の底面は平面とされており、
前記下層側コンクリートに接しない前記保護部材の表面には前記電極部材まで貫通する複数の孔が形成されている
ことを特徴とする電気防食用電極。 It is an electrode for cathodic protection that is laid on the lower-layer side concrete and in which a reinforcing bar is arranged at a predetermined position above,
A plate-like electrode member formed from a metal material for cathodic protection;
A protective member having flexibility and insulation formed so as to cover the electrode member;
Comprising
The bottom surface of the protective member in contact with the lower concrete layer is a flat surface,
A plurality of holes penetrating to the electrode member are formed on the surface of the protective member that is not in contact with the lower-layer side concrete .
前記電極部材に接する層の表面には前記電極部材まで貫通する複数の孔が形成され、
他の層の表面には下層まで貫通し且つ下層表面に形成された孔と重ならないように複数の孔が形成されていることを特徴とする請求項１に記載の電気防食用電極。 The inside of the protective member has a layer structure,
A plurality of holes penetrating to the electrode member are formed on the surface of the layer in contact with the electrode member,
The electrode for cathodic protection according to claim 1, wherein a plurality of holes are formed on the surface of the other layer so as to penetrate to the lower layer and not overlap with the holes formed on the surface of the lower layer.
前記電気防食用電極の敷設後に鉄筋を組み立てる第２の工程と、
前記鉄筋の組み立て後に上層側コンクリートを打設する第３の工程と、
を含むことを特徴とするコンクリート構造物の施工方法。 A first step of laying the electrode for cathodic protection according to any one of claims 1 to 3 on the lower layer side concrete;
A second step of assembling a reinforcing bar after laying the electrode for anticorrosion;
A third step of placing the upper-layer side concrete after the rebar is assembled;
A method for constructing a concrete structure characterized by comprising:
前記鉄筋はスラブ鉄筋であり、
前記上層側コンクリートは基礎スラブコンクリートであることを特徴とする請求項４に記載のコンクリート構造物の施工方法。 The lower layer side concrete is discarded concrete,
The rebar is a slab rebar,
The concrete structure construction method according to claim 4, wherein the upper-layer side concrete is foundation slab concrete.
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