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

Abstract

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 waterproof 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 weatherproof 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.