A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ELECTROCORROSION PROTECTION METHOD, SELECTION METHOD OF BACKFILL MATERIAL, INSTALLATION METHOD OF DRAINAGE TERMINAL, AND CONCRETE STRUCTURE
To provide an electrocorrosion protection method capable of performing effective electrocorrosion protection in a region other than a backfill part, and capable of suppressing excessive supply of a protective current to a part of a steel material located in the backfill part.SOLUTION: In an electrocorrosion protection method of the present invention, required electric resistivity is calculated from a target electric resistivity ratio that is reference electric resistivity ratio corresponding to a content of chloride ion of a target concrete structure obtained from a scatter diagram showing a relation between the chloride ion content of the reference concrete portion in a reference structure provided with the reference backfill portion and reference concrete portion and a reference electric resistivity ratio that is a ratio of the electric resistivity of the reference backfill portion relative to the electric resistivity of the reference concrete portion when a polarization amount of the steel material at the reference backfill portion and reference concrete portion becomes 100 mV when a current is supplied from an anode material installed in the reference structure in the steel material embedded in the reference structure and the electric resistivity ratio of the target concrete structure, and the backfill part having the electric resistivity exceeding the required electric resistivity is formed.SELECTED DRAWING: Figure 7
【課題】埋戻部以外の領域で効果的な電気防食を行うことができると共に、埋戻部に位置する鋼材の部分に過剰な防食電流が供給されるのを抑制することができる電気防食工法を提供する。【解決手段】本発明の電気防食工法は、基準埋戻部と基準コンクリート部とを備える基準構造物における基準コンクリート部の塩化物イオンの含有量と、基準構造物に埋設された鋼材に基準構造物に設置した陽極材から電流を供給する際に基準埋戻部および基準コンクリート部における鋼材の分極量が１００ｍＶとなるときの基準コンクリート部の電気抵抗率に対する基準埋戻部の電気抵抗率の比である基準電気抵抗率比と、の関係を示す散布図から求めた、対象コンクリート構造物の塩化物イオンの含有量に対応する基準電気抵抗率比である対象電気抵抗率比と、対象コンクリート構造物の電気抵抗率から要求電気抵抗率を算出し、該要求電気抵抗率を超える電気抵抗率を有する埋戻部を形成する。【選択図】図７
ELECTROCORROSION PROTECTION METHOD, SELECTION METHOD OF BACKFILL MATERIAL, INSTALLATION METHOD OF DRAINAGE TERMINAL, AND CONCRETE STRUCTURE
To provide an electrocorrosion protection method capable of performing effective electrocorrosion protection in a region other than a backfill part, and capable of suppressing excessive supply of a protective current to a part of a steel material located in the backfill part.SOLUTION: In an electrocorrosion protection method of the present invention, required electric resistivity is calculated from a target electric resistivity ratio that is reference electric resistivity ratio corresponding to a content of chloride ion of a target concrete structure obtained from a scatter diagram showing a relation between the chloride ion content of the reference concrete portion in a reference structure provided with the reference backfill portion and reference concrete portion and a reference electric resistivity ratio that is a ratio of the electric resistivity of the reference backfill portion relative to the electric resistivity of the reference concrete portion when a polarization amount of the steel material at the reference backfill portion and reference concrete portion becomes 100 mV when a current is supplied from an anode material installed in the reference structure in the steel material embedded in the reference structure and the electric resistivity ratio of the target concrete structure, and the backfill part having the electric resistivity exceeding the required electric resistivity is formed.SELECTED DRAWING: Figure 7
【課題】埋戻部以外の領域で効果的な電気防食を行うことができると共に、埋戻部に位置する鋼材の部分に過剰な防食電流が供給されるのを抑制することができる電気防食工法を提供する。【解決手段】本発明の電気防食工法は、基準埋戻部と基準コンクリート部とを備える基準構造物における基準コンクリート部の塩化物イオンの含有量と、基準構造物に埋設された鋼材に基準構造物に設置した陽極材から電流を供給する際に基準埋戻部および基準コンクリート部における鋼材の分極量が１００ｍＶとなるときの基準コンクリート部の電気抵抗率に対する基準埋戻部の電気抵抗率の比である基準電気抵抗率比と、の関係を示す散布図から求めた、対象コンクリート構造物の塩化物イオンの含有量に対応する基準電気抵抗率比である対象電気抵抗率比と、対象コンクリート構造物の電気抵抗率から要求電気抵抗率を算出し、該要求電気抵抗率を超える電気抵抗率を有する埋戻部を形成する。【選択図】図７
ELECTROCORROSION PROTECTION METHOD, SELECTION METHOD OF BACKFILL MATERIAL, INSTALLATION METHOD OF DRAINAGE TERMINAL, AND CONCRETE STRUCTURE
電気防食工法、埋戻材の選定方法、排流端子の設置方法、および、コンクリート構造物
SHIGENIWA MASAHIKO (author) / NAKAMURA SACHIKO (author) / YAMAMOTO MAKOTO (author)
2021-10-07
Patent
Electronic Resource
Japanese
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