長寿命重防食技術の開発とその耐海水性支配因子の効果-最近の海洋超重防食技術の動向-
1996 年 45 巻 4 号 p. 244-255
詳細
1996 年 45 巻 4 号 p. 244-255
Marine structure models were constructed in 1974 to study new corrosion protection sysytems over a long term. The results based on 12 years exposure indicate that excellent sysytems for splash and tidal zones were polyethylene, rubber, epoxy mastic and metal wrappings with catholic protection. The laboratory tests showed that the minimum rupture energy of a sprayed urethane coating was proportional to the square of coating thickness and gave minimum coating thickness required.
This paper also reviewes new corrosion control measures applied later to the gigantic maritime structures, which are desired to posess 50 to 100 years durability. The protective coatings using in atmospheric zone are fluoro-resin and acrylic silicone resin paints with excellent weatherability. In the splash and tidal zones super heavy duty epoxy mastic and corrosion resistant metal (SUS 316 L, Ti) wrapping are preferably listed in the specification in conbination with catholic protection.
