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Corrosion Mechanism and Protection Methods for Suspension Bridge Cables

Author(s):



Medium: journal article
Language(s): English
Published in: Structural Engineering International, , n. 3, v. 10
Page(s): 189-193
DOI: 10.2749/101686600780481518
Abstract:

The main cables of several Japanese suspension bridges were found to be corroded. To determine the corrosion mechanism, the environments inside the cables were investigated, and corrosion simulation tests of galvanised wires were carried out. These studies showed that the corrosion environment depends on the position within the cable, with the side parts being most susceptible to corrosion. A new anti-corrosion system was developed using S-shaped wrapping wires and improved pastes to overcome this problem. Cables protected by this system were compared in long-term exposure tests with cables protected by conventional systems, and showed improved anti-corrosion performance. Another new method, namely to pass dry air through the cables, is proposed. Preliminary tests showed this system to be promising in terms of improving the anti-corrosion properties of the cables.

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  • About this
    data sheet
  • Reference-ID
    10003290
  • Published on:
    15/09/2002
  • Last updated on:
    03/11/2018
 
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