Corrosion Prevention of Suspension Bridge Cables by S-shaped Wire Wrapping System

摘要

A new corrosion prevention system has been developed; S-shaped wire wrapping with elastic type heavy duty coating (epoxy resin primer and fluorine top coats). The system intercepts corrosion factors such as water into the cable. S-shaped wire wrapping has better water-proof than general galvanized wires with a circle cross section. Elastic type heavy duty coating has good adhesive on new galvanized surfaces and has high corrosion prevention property, which was confirmed by weather-proof corrosion tests and immersion tests. It is shown by freeze-thaw cycle tests with small-sized cable specimens that the system prevents cracks even when the cable moves longitudinally.