JPH02282569A - Method for installing anodic member on concrete structure - Google Patents
Method for installing anodic member on concrete structureInfo
- Publication number
- JPH02282569A JPH02282569A JP1105180A JP10518089A JPH02282569A JP H02282569 A JPH02282569 A JP H02282569A JP 1105180 A JP1105180 A JP 1105180A JP 10518089 A JP10518089 A JP 10518089A JP H02282569 A JPH02282569 A JP H02282569A
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- galvanic anode
- bolts
- concrete
- anode member
- 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
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000009415 formwork Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 25
- 238000004210 cathodic protection Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract 1
- 239000011701 zinc Substances 0.000 description 13
- 229910052725 zinc Inorganic materials 0.000 description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 9
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920000247 superabsorbent polymer Polymers 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Building Environments (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は鉄筋コンクリート構造物、プレストレストコン
クリート構造物等を新設する際に、該構造物中の鋼材を
流電陽極方式により電気防食するのに使用される流電陽
極部材を設置する方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is used for cathodic protection of steel materials in a reinforced concrete structure, prestressed concrete structure, etc. using a galvanic anode method when constructing a new reinforced concrete structure, prestressed concrete structure, etc. The present invention relates to a method for installing a galvanic anode member.
通常、大気中にあるコンクリート構造物においては、コ
ンクリートの欠陥や密実度の不均一性、幾何学的構造の
違いにより、マクロセル（腐食電池）が構成され、これ
により該構造物中の鋼材（鉄筋、ｐｃ鋼材、鉄骨等）が
腐食され、腐食による鋼材の腐食膨張により、コンクリ
ートのひび割れが生じ、さらに鋼材の腐食が進行すると
いう構造的欠陥を有する。このことは構造物が塩分の影
響に曝されることでより加速されることが知られている
。 このようなコンクリート構造物中の鋼材を防食する
手段としては電気防食が最も有効な方法である。Normally, in concrete structures exposed to the atmosphere, macrocells (corrosion cells) are formed due to defects in the concrete, non-uniformity in density, and differences in geometric structure, and this causes the steel in the structure to There is a structural defect in which the steel (reinforcing bars, PC steel, steel frames, etc.) is corroded, and the corrosive expansion of the steel due to corrosion causes cracks in the concrete, and further corrosion of the steel progresses. It is known that this phenomenon is further accelerated when the structure is exposed to the influence of salt. Cathodic protection is the most effective method for preventing corrosion of steel materials in such concrete structures.
従来の電気防食法は、例えば橋床版のコンクリート中の
鋼材を防食する場合についていえば。Conventional cathodic protection methods are used, for example, to prevent corrosion of steel in the concrete of bridge decks.
橋床版のコンクリートに１２７〜４５７ｍｍ間隔に溝を
掘り、亜鉛リボン（５ｍｍ角）を設置し、モルタルやコ
ンクリートで溝を充填する方法、あるいは橋床版にモル
タル（厚み１３ｍｍ程度）を敷き、このモルタルが硬化
する前にφ２２ｍｍの穴を多数あけた（穿孔率６０％）
亜鉛板を床版全面に敷き、コンクリート被覆する方法（
この方法は床面への施工である）がある。You can dig grooves at intervals of 127 to 457 mm in the concrete of the bridge deck, install zinc ribbons (5 mm square), and fill the grooves with mortar or concrete, or spread mortar (about 13 mm thick) on the bridge deck and Many holes with a diameter of 22 mm were drilled before the mortar hardened (perforation rate 60%).
A method of laying zinc plates over the entire surface of the slab and covering it with concrete (
This method is for construction on the floor surface).
前述の溝に亜鉛リボンを敷設する方式では亜鉛の表面積
が不足で十分な防食電流が得られないことから、亜鉛板
を敷く方式に限られるが、この方式には次の如き問題点
がある。The method of laying a zinc ribbon in the groove described above is limited to the method of laying a zinc plate because the surface area of the zinc is insufficient and a sufficient anticorrosion current cannot be obtained, but this method has the following problems.
本施工上の問題点 （１）天井面や壁面への施工が困難である。Problems with this construction (1) It is difficult to install on ceilings and walls.
（２）亜鉛板を何らかの方法で天井面や壁面に固定し、
その上にモルタル被覆してもモルタルが経時とともに剥
落するおそれがある。（平滑な亜鉛板表面に対するモル
タルの付着性）（３）防食電流を供給することにより、
亜鉛は消耗するが再補修が大掛かりなものとなる。(2) Fix the zinc plate to the ceiling or wall in some way,
Even if it is coated with mortar, there is a risk that the mortar will peel off over time. (Adhesion of mortar to smooth zinc plate surface) (3) By supplying anti-corrosion current,
Zinc will be consumed, but re-repair will be a major undertaking.
＊性能上の問題点
（１）陽極の接地抵抗が大きい。亜鉛が消耗しモルタル
との界面に亜鉛の酸化物、水酸化物が蓄積されてくると
、この傾向はますます大きくなる。（流電陽極方式では
、亜鉛と鋼材との電位差を利用して防食するものであり
、なおかつ大気中のコンクリートの比抵抗が大きいため
、亜鉛１モルタル界面の抵抗を下げることが望ましい、
）
本発明はコンクリート構造物の天井面あるいは壁面への
流電陽極部材の取り付けを可能とし、かつ流電陽極部材
の取り付けが極めて簡単な工程で施工できるコンクリー
ト構造物に流電陽極部材を設置する方法を提供すること
を目的とするものである。*Performance issues (1) The grounding resistance of the anode is large. This tendency becomes even more pronounced as zinc is consumed and zinc oxides and hydroxides accumulate at the interface with mortar. (The galvanic anode method uses the potential difference between zinc and steel to prevent corrosion, and since the specific resistance of concrete in the atmosphere is high, it is desirable to lower the resistance at the zinc-mortar interface.
) The present invention enables the installation of a galvanic anode member on the ceiling or wall surface of a concrete structure, and installs the galvanic anode member on a concrete structure where the galvanic anode member can be installed in an extremely simple process. The purpose is to provide a method.
本発明はコンクリート構造物中の鋼材を電気防食するた
めの流電陽極部材を設置するに際し、コンクリート打設
前に、排流用と流電陽極部材固定用を兼ねたボルトを鋼
材に植設し、型枠外に突出したその先端部をナツト締め
して型枠を固定し、次いでコンクリートを打設し、型枠
解除後、前記ボルトに流電陽極部材を固定することによ
り前記課題を達成したものである。In the present invention, when installing a galvanic anode member for cathodic protection of steel materials in a concrete structure, bolts for draining water and for fixing the galvanic anode member are implanted in the steel material before concrete pouring, The above-mentioned problem was achieved by fixing the formwork by tightening the tips of the tips protruding outside the formwork with nuts, then pouring concrete, and after releasing the formwork, fixing the galvanic anode member to the bolts. be.
このように、本発明では新設されるコンクリート構造物
中の鋼材を流電陽極方式により電気防食するのに用いら
れる流電陽極部材を設置するに際し、鋼材に植設したボ
ルトの先端部をナツト締めして型枠を固定し、コンクリ
ート打設後はこのボルトに流電陽極部材を固定するよう
にするため、ボルトが型枠除去前には型枠の固定具およ
びスペーサーとして作用し、また型枠除去後には流電陽
極部材の固定具として作用し、しかもこのボルトはコン
クリート構造物内の鋼材に直接に植設されているため、
このボルトに流電陽極部材を取り付けることにより流電
陽極部材がコンクリート構造物にしっかりと固定される
とともに別途に排流線を鋼材に接続する必要がなく、か
つ鋼材への電気防食効果が著しく増大する。In this way, in the present invention, when installing a galvanic anode member used for cathodic protection of steel materials in a newly constructed concrete structure using the galvanic anode method, the tip of the bolt installed in the steel material is tightened with a nut. Since the galvanic anode member is fixed to these bolts after concrete is poured, the bolts act as fixtures and spacers for the formwork before the formwork is removed, and also After removal, it acts as a fixture for the galvanic anode member, and since this bolt is installed directly into the steel material within the concrete structure,
By attaching the galvanic anode member to this bolt, the galvanic anode member is firmly fixed to the concrete structure, there is no need to separately connect a drainage line to the steel material, and the cathodic protection effect on the steel material is significantly increased. do.
本発明に使用される流電陽極部材は外側から保護板、防
水材、流電陽極板、保水材が順次−体的に積層されたも
のが好ましい。The galvanic anode member used in the present invention is preferably one in which a protection plate, a waterproof material, a galvanic anode plate, and a water retaining material are sequentially laminated from the outside.
以下、このような流電陽極部材の構成について具体的に
説明する。Hereinafter, the structure of such a galvanic anode member will be specifically explained.
保護板は固定具でコンクリート面に陽極板を固定した時
、陽極板全面が−様な面圧をもってコンクリート面に接
触するような剛性を有する板で、また外界からのｌ［に
対し、陽極板を保護するためのもので、ＦＲＰ、石綿ス
レート、繊維強化コンクリート板、耐食性を有する金属
板等が使用できる。The protection plate is a plate that has such rigidity that when the anode plate is fixed to the concrete surface with a fixture, the entire surface of the anode plate comes into contact with the concrete surface with a -like surface pressure. FRP, asbestos slate, fiber-reinforced concrete plates, corrosion-resistant metal plates, etc. can be used.
防水材は保護板からの、あるいは保護板と陽極板のすき
間からの水、酸素、塩分の浸透を遮断し、陽極板の自己
腐食を防止する。また、防水材自体が粘着性を有し、陽
極板と保護板とを接着する機能と、保護板へ加えられる
物理的衝撃を緩和する機能とを合わせもてばさらに望ま
しい０例えば、ゴムアスファルトシートが最適であるが
、両面粘着テープ等でもよい。The waterproof material blocks water, oxygen, and salt from penetrating through the protective plate or from the gap between the protective plate and the anode plate, and prevents self-corrosion of the anode plate. In addition, it is more desirable if the waterproofing material itself has adhesive properties and has the function of adhering the anode plate and the protection plate and the function of mitigating the physical impact applied to the protection plate.For example, rubber asphalt sheet is optimal, but double-sided adhesive tape or the like may also be used.
流電陽極板は、Ｚｎ、ＡＱ、Ｍｇ合金等の犠牲陽極作用
を有するもので、板状化の容易性からＺｎ、Ｚｎ合金が
好ましい。例えば、板厚１〜２■の亜鉛板で、板厚は防
食期間に応じて上記範囲内から適宜選択する。The galvanic anode plate is made of Zn, AQ, Mg alloy, etc., which acts as a sacrificial anode, and Zn and Zn alloy are preferable because they can be easily formed into a plate shape. For example, a zinc plate with a thickness of 1 to 2 cm is used, and the thickness is appropriately selected from within the above range depending on the corrosion protection period.
保水材は陽極板とコンクリート表面の好き間をなくし、
この界面での電気抵抗を下げ、また陽極板の腐食生成物
の堆積による抵抗の増加を防ぐ作用をなす、この保水材
は可塑性があり、大気中でも水分を保有し、導電性を有
する材料が望ましい０例えば、ベントナイトと吸湿性電
解質を水で練ったもの、具体的にはケイ酸アルミニウム
水和物、金属硫酸塩および塩化マグネシウムからなる特
願昭６３−１５８４８４号公報に示されているようなバ
ックフィルが挙げられる。この種のバックフィルは流動
性を有するため、壁面等に適用する場合、ダレ防止のた
め、バックフィル間に不織布等をはさむことは有効であ
る。The water retaining material eliminates the gap between the anode plate and the concrete surface,
This water-retaining material, which lowers the electrical resistance at this interface and prevents an increase in resistance due to the accumulation of corrosion products on the anode plate, is preferably a material that is plastic, retains moisture even in the atmosphere, and is conductive. 0 For example, a bag made by kneading bentonite and a hygroscopic electrolyte with water, specifically, a bag as shown in Japanese Patent Application No. 158484/1984, which is made of aluminum silicate hydrate, metal sulfate, and magnesium chloride. Phil is an example. Since this type of backfill has fluidity, when applied to a wall surface, etc., it is effective to sandwich a nonwoven fabric or the like between the backfills to prevent sagging.
また他の保水材としては、高吸水性ポリマー人すの高吸
収シートが使用できる０例えば、２枚の吸水紙あるいは
不織布の間にポリアクリル酸系等の高吸水性ポリマー粉
末とパルプをはさみ込んでシート状に加工したものは、
パルプの吸収速度の速さと、ポリマーの優れた吸収保持
力を有し、バックフィルに比べてシート状にした分節工
性が良い。Other water-retaining materials that can be used include superabsorbent sheets made from superabsorbent polymers.For example, superabsorbent polymer powder and pulp such as polyacrylic acid are sandwiched between two sheets of absorbent paper or nonwoven fabric. The material processed into a sheet shape is
It has the fast absorption rate of pulp and the excellent absorption and retention power of polymer, and has better segmentability when made into a sheet than backfill.
以下に本発明の実施例を添付図面を参照して説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
実施例 この実施例は本発明を橋梁の桁に適用した例を示す。Example This embodiment shows an example in which the present invention is applied to a bridge girder.
第１図において、配筋後、φ１３のスターラップ１にＭ
１２のボルト２を溶接により型枠側に延びるように植設
した。ボルト２はその長さが流電陽極部材を取付けるに
必要な長さ以上がコンクリート面より外側に突出する長
さとし、このボルト２は流電陽極部材１枚に対し、５本
の割合いとなるように設けた。このボルト２に型枠３を
ナツト４で締め付けることにより固定した。In Figure 1, after reinforcing, M is placed on stirrup 1 of φ13
Twelve bolts 2 were welded so as to extend toward the formwork side. The bolts 2 should have a length that is longer than the length necessary to install the galvanic anode member and protrude outward from the concrete surface, and the number of bolts 2 should be 5 per galvanic anode member. It was established in The formwork 3 was fixed to the bolts 2 by tightening them with nuts 4.
なお、図中の５は主筋である。このように、配筋、およ
び型枠をセットした後、コンクリートを打設した。Note that 5 in the figure is the main reinforcement. After reinforcing and setting the formwork in this way, concrete was poured.
コンクリート固化後、型枠３を除去し、前記したような
流電陽極部材６を歯付座金およびナツト（図示せず）で
締め付け、ボルトキャップ７を取付けることにより流電
陽極部材６を固定してコンクリート構造物中の鋼材と流
電陽極部材６とを電気的に接続した。この状態を第２図
に示す。After the concrete solidifies, the formwork 3 is removed, the galvanic anode member 6 as described above is tightened with a toothed washer and a nut (not shown), and the bolt cap 7 is attached to fix the galvanic anode member 6. The steel material in the concrete structure and the galvanic anode member 6 were electrically connected. This state is shown in FIG.
以上説明したように１本発明によれば、コンクリート構
造物新設時に流電陽極部材をコンクリート構造物のいず
れの面にもしっかりと固定でき、しかもこの流電陽極部
材はボルトを介して構造物中の鋼材と電気的に接続され
るため、流電陽極部材と鋼材との排流線が省略され、穴
明け、ボルトの打設あるいは溝を掘る等の手間を要さず
、極めて簡単な短縮された工程で流電ＩｒＪｔｉ部材を
設置することができる。また本発明におけるボルトは型
枠の固定とともにスペーサーとしても利用できるため、
スペーサーの数を大幅に減らすことができるという効果
をも有する。As explained above, according to the present invention, the galvanic anode member can be securely fixed to any surface of the concrete structure when a new concrete structure is constructed, and the galvanic anode member is inserted into the structure through bolts. Because it is electrically connected to the steel material, the drainage line between the galvanic anode member and the steel material is omitted, and there is no need for the hassle of drilling holes, driving bolts, or digging grooves, making it an extremely simple and shortened method. Galvanic IrJti members can be installed in the same process. In addition, the bolts of the present invention can be used as spacers as well as fixing the formwork, so
It also has the effect of being able to significantly reduce the number of spacers.
第１図および第２図は本発明を橋梁の桁に施工した場合
の実施例における折断面図をそれぞれ示す。
１・・・スターラップ ２・・・ボルト３・・・型枠
４・・・ナツト５・・・主筋
６・・・流電陽極部材７・・・ボルトキャップ
図面の浄書
第１図
晃２図
補正命令の日付は
平成１年７月２５日
補正の対象
図 面
補正の内容
添付の通り。
添付書類の目録
図 面
手続補正書
（方式）
事件の表示
平成１年特許願第１０５１８０号
発明の名称
コンクリート構造物に流電ＰＩｋｗＡ
４゜
代
東京都千代田区鍛冶町２−２−２
中川防蝕工業株式会社
代表者 國 安 輝 久
埋入
１通FIGS. 1 and 2 each show a folded cross-sectional view of an embodiment in which the present invention is applied to a bridge girder. 1... Stirrup 2... Bolt 3... Formwork 4... Nut 5... Main reinforcement
6... Galvanic anode member 7... The date of the order to amend the engraving of the bolt cap drawings of Figures 1 and 2 is dated July 25, 1999, as shown in the attached content of the amendments to the drawings subject to the amendment. Catalog of attached documents Planned amendment (method) Display of the case 1999 Patent Application No. 105180 Name of the invention Current electricity in concrete structures PIkwA 4゚ 2-2-2 Kajicho, Chiyoda-ku, Tokyo Nakagawa Anticorrosion Industry Co., Ltd. Representative Teru Kuniyasu Hisabuiri 1 copy
Claims (1)
電気防食するのに用いられる流電陽極部材を設置する方
法において、コンクリート打設前に、排流用と流電陽極
部材固定用を兼ねたボルトを鋼材に植設し、型枠外に突
出したその先端部をナット締めして型枠を固定し、次い
でコンクリートを打設し、型枠解除後、前記ボルトに流
電陽極部材を固定することを特徴とするコンクリート構
造物に流電陽極部材を設置する方法。 ２、前記流電陽極部材が外側から保護板、防水材、流電
陽極板、保水材が順次一体的に積層されたものである請
求項１記載の方法。[Claims] 1. In a method for installing a galvanic anode member used for cathodic protection of steel materials in a concrete structure by a galvanic anode method, a drainage anode member and a galvanic anode member are installed before concrete pouring. A bolt that also serves as a fixing bolt is planted in the steel material, and the tip of the bolt that protrudes outside the formwork is tightened with a nut to fix the formwork.Concrete is then poured, and after the formwork is released, a galvanic anode is attached to the bolt. A method for installing a galvanic anode member in a concrete structure, characterized by fixing the member. 2. The method according to claim 1, wherein the galvanic anode member is formed by integrally laminating a protection plate, a waterproof material, a galvanic anode plate, and a water retaining material in this order from the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105180A JPH089890B2 (en) | 1989-04-25 | 1989-04-25 | Method of installing galvanic anode member on concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105180A JPH089890B2 (en) | 1989-04-25 | 1989-04-25 | Method of installing galvanic anode member on concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02282569A true JPH02282569A (en) | 1990-11-20 |
| JPH089890B2 JPH089890B2 (en) | 1996-01-31 |
Family
ID=14400481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1105180A Expired - Fee Related JPH089890B2 (en) | 1989-04-25 | 1989-04-25 | Method of installing galvanic anode member on concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089890B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150623A (en) * | 2008-12-26 | 2010-07-08 | Nippon Telegr & Teleph Corp <Ntt> | Concrete structure |
-
1989
- 1989-04-25 JP JP1105180A patent/JPH089890B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150623A (en) * | 2008-12-26 | 2010-07-08 | Nippon Telegr & Teleph Corp <Ntt> | Concrete structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089890B2 (en) | 1996-01-31 |
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