Injection and Exhaust Sleeve -Suspended Bridge Main Cable

Corrosion of the main cables on suspension bridges is internationally recognized as a very serious problem. Dry air flow prevents corrosion from occurring, while other methods have been shown to merely slow down the corrosion process. The implementation of a series of injection and exhaust sleeves along the length of the main cable, supported by a system of dehumidified air maintained below the threshold of 40% RH, supplies a continuous lifeline of dried air to combat corrosion. At all injection and exhaust points, installing monitoring instruments guarantees the permanent monitoring of system operation and documentation of corrosion protection. 

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