JPH042737B2 - - Google Patents
Info
- Publication number
- JPH042737B2 JPH042737B2 JP17873684A JP17873684A JPH042737B2 JP H042737 B2 JPH042737 B2 JP H042737B2 JP 17873684 A JP17873684 A JP 17873684A JP 17873684 A JP17873684 A JP 17873684A JP H042737 B2 JPH042737 B2 JP H042737B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- adhesive
- underwater
- corrosion
- steel
- 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
Links
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000013535 sea water Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 underwater bonds Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Description
「産業上の利用分野」
本発明は水中鉄鋼構造物の表面防蝕に関するも
のである。
「従来の技術」
鋼矢板或は桟橋鋼杭等海洋構造物の防蝕につ
き、水中或はスプラツシユゾーン部位のメンテナ
ンス長期防蝕が極めて重要であるが大変難しい。
現状、水中防蝕塗料、水中ボンド、或は水中接着
剤と各種シートとの複合防蝕法、その他各種材
料、工法があるが、現実問題として水中或は湿潤
面被塗物に接着剤を塗布、或は圧着被覆する場
合、水、海水の影響により初期接着が悪く、機能
を発揮する前にずれたり、剥れたりする問題があ
り、いまだ満足すべき材料及び工法がみつかつて
いない。
「発明が解決しようとする問題点」
本発明は海水面下にある鉄鋼構造物の表面を迅
速確実に防蝕加工することを目的とするものであ
る。
「問題点を解決するための手順」
本発明は空気中で防水シートの一面に接着剤を
塗布し、これを水中に搬入し水中鉄鋼構造物の表
面又は水位上の湿潤表面に上記接着剤を接触し、
同表面に上記シートを延展しかつ同シートの内部
又は外部に設けた永久磁石によつて同シートを同
表面に吸着させることを特徴とする鉄鋼構造物の
防蝕法によつて構成される。
「作用」
従つて空気中で塗布した上記接着剤塗布シート
を潜水者が水中に持込みこれを上記構造物の表面
に接着させる際同シートの外面を同表面に沿つて
手で延ばしてひろげることによつて表面と接着剤
間の海水が排除され接着剤は初期接着作用を開始
する。その際同シートはその内部に有する磁力に
よつて上記表面に全面的に吸着され、或は永久磁
石で外面を押えて磁力によつて表面に吸着させる
ものである。そして上記初期接着作用が終了した
後は上記シートは同接着剤によつて上記表面に固
着するものである。
「実施例」
防水シート１には可撓マグネツトゴムシートを
用い、所定寸法に裁断される。そして同シート１
の一面に空気中において防蝕用水中接着剤（エポ
キシ系、ウレタン系、ポリエステル系、アクリル
系等）２を塗布する。そしてこれを潜水作業者が
海水中３に搬入し、鋼矢板、桟橋鋼杭等海洋鉄鋼
構造物４の既に水中サンドプラスト等によつて研
摩された水中表面５及び水位上の湿潤研摩表面５
に上記接着剤２を接触させて同シート１の外面を
手で四方に延しひろげる。このようにするとシー
ト１は上記表面５にその磁力によつて圧接して吸
着しかつ接着剤２と表面５間に介在する海水はシ
ート１の四方縁から排出されかつ接着剤２は表面
５に密着して硬化しかつ同接着剤２の塗膜によつ
て上記表面５を被覆し防蝕することができると共
に防水シート１が同接着剤２を防衛する。第１表
に磁気を帯びない一般ゴムシートと本発明の磁力
による場合の比較例を示す。
"Field of Industrial Application" The present invention relates to surface corrosion protection of underwater steel structures. ``Prior Art'' Regarding the corrosion protection of marine structures such as steel sheet piles or pier steel piles, maintenance and long-term corrosion protection of underwater or splash zone parts is extremely important, but very difficult.
Currently, there are underwater corrosion-resistant paints, underwater bonds, composite corrosion-proofing methods using underwater adhesives and various sheets, and various other materials and construction methods, but in reality, it is difficult to apply adhesives to underwater or wet surfaces. When applying a pressure-bonded coating, there is a problem that the initial adhesion is poor due to the influence of water or seawater, and it may shift or peel before it can function properly, and a satisfactory material and construction method have not yet been found. "Problems to be Solved by the Invention" The purpose of the present invention is to quickly and reliably apply corrosion-proofing to the surface of a steel structure located below sea level. "Procedure for solving the problem" The present invention involves applying an adhesive to one side of a waterproof sheet in the air, carrying it into the water, and applying the adhesive to the surface of an underwater steel structure or a wet surface above the water level. contact,
This method is comprised of a method for preventing corrosion of steel structures, which is characterized by spreading the sheet on the same surface and adhering the sheet to the surface using a permanent magnet provided inside or outside of the sheet. ``Function'' Therefore, when a diver brings the above-mentioned adhesive-coated sheet applied in the air underwater and adheres it to the surface of the above-mentioned structure, the outer surface of the sheet is stretched by hand along the same surface to spread it. Seawater between the surface and the adhesive is thus removed and the adhesive begins its initial adhesive action. In this case, the sheet is entirely attracted to the surface by the magnetic force it has inside, or the outer surface is pressed by a permanent magnet and the sheet is attracted to the surface by the magnetic force. After the initial adhesive action is completed, the sheet is fixed to the surface by the adhesive. ``Example'' A flexible magnetic rubber sheet is used as the waterproof sheet 1, and is cut to a predetermined size. And the same sheet 1
A corrosion-preventing underwater adhesive (epoxy, urethane, polyester, acrylic, etc.) 2 is applied to one surface of the adhesive in air. Then, a diving worker carries this into seawater 3, and the underwater surface 5 of the marine steel structure 4 such as steel sheet piles and pier steel piles, which has already been polished by underwater sandplast, etc., and the wet polished surface 5 above the water level.
The adhesive 2 is brought into contact with the adhesive 2, and the outer surface of the sheet 1 is spread by hand in all directions. In this way, the sheet 1 is pressed against and attracted to the surface 5 by its magnetic force, and the seawater interposed between the adhesive 2 and the surface 5 is discharged from the four edges of the sheet 1, and the adhesive 2 is attached to the surface 5. The adhesive 2 adheres tightly and hardens, and the surface 5 can be covered with a coating film of the adhesive 2 to prevent corrosion, and the waterproof sheet 1 protects the adhesive 2. Table 1 shows comparative examples between a non-magnetic general rubber sheet and the magnetic force of the present invention.
【表】
尚防水シート１に非磁性ゴムシートを用い上記
延展時に永久磁石を同シート１の外面に附着させ
上記永久磁石の磁力により同シート１を構造物の
表面に吸着させることも出来る。
「効果」
本発明は上述の方法によつたので水中鉄鋼構造
物４の表面５に防水塗料を塗布又は貼着する必要
がなくかつ水中表面５と接着剤２との間に海水を
介在させることなく接着し得るばかりでなく磁力
によつて接着剤２の上記延展時及び初期接着作用
時にシート１が表面５から外れ又はずれるおそれ
がなくかつ波浪の影響を受けることもなく迅速確
実に上記表面５を防蝕加工し得るものである。[Table] It is also possible to use a non-magnetic rubber sheet as the waterproof sheet 1 and attach a permanent magnet to the outer surface of the sheet 1 during the above-mentioned spreading so that the sheet 1 is attracted to the surface of the structure by the magnetic force of the permanent magnet. "Effects" Since the present invention is based on the method described above, there is no need to apply or adhere a waterproof paint to the surface 5 of the underwater steel structure 4, and seawater can be interposed between the underwater surface 5 and the adhesive 2. Not only can the sheet 1 be bonded to the surface 5 without any problem, but also the magnetic force can quickly and reliably bond the sheet 1 to the surface 5 without fear of it coming off or shifting from the surface 5 during the spreading of the adhesive 2 and during the initial adhesion action, and without being affected by waves. It can be treated with anti-corrosion treatment.
図面は本発明の鉄鋼構造物の防蝕法による防蝕
加工状態を示す縦断面図である。
１…防水シート、２…接着剤、３…水中、４…
水中鉄鋼構造物、５…表面。
The drawing is a longitudinal cross-sectional view showing a state of corrosion protection by the corrosion protection method for steel structures of the present invention. 1... Waterproof sheet, 2... Adhesive, 3... Underwater, 4...
Underwater steel structure, 5...Surface.
Claims (1)
し、これを水中に搬入し水中鉄鋼構造物の表面又
は水位上の湿潤表面に上記接着剤を接触し、同表
面に上記シートを延展しかつ同シートの内部又は
外部に設けた永久磁石によつて同シートを同表面
に吸着させることを特徴とする鉄鋼構造物の防蝕
法。1 Apply an adhesive to one side of a waterproof sheet in the air, bring it into the water, contact the adhesive on the surface of an underwater steel structure or a wet surface above the water level, and spread the sheet on the same surface. A method for preventing corrosion of steel structures, characterized by adhering the sheet to the surface using a permanent magnet provided inside or outside the sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17873684A JPS6157724A (en) | 1984-08-27 | 1984-08-27 | Method of preventing steel structure from corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17873684A JPS6157724A (en) | 1984-08-27 | 1984-08-27 | Method of preventing steel structure from corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6157724A JPS6157724A (en) | 1986-03-24 |
| JPH042737B2 true JPH042737B2 (en) | 1992-01-20 |
Family
ID=16053684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17873684A Granted JPS6157724A (en) | 1984-08-27 | 1984-08-27 | Method of preventing steel structure from corrosion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157724A (en) |
-
1984
- 1984-08-27 JP JP17873684A patent/JPS6157724A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6157724A (en) | 1986-03-24 |
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