Abstract
Several corrosion preventing devices for rails and tieplates laid in tunnels were tested at sites, which include cathodic protection of rails in a steam-locomotive section (Utô) and in electrified sections (Sasago, Tanna and Kanmon) and application of protective zinc plates and zinc-rich paint on rail joints in several locations.
As the result of these field tests, the effectiveness of these methods are generally recognized, and some of them have been adopted as practical and effective counter measures.
