Corrosion protection of steel structures by low-alloy corrosion resistant steels and surface coatings

Recent advances in corrosion protection of social infrastructures and buildings have been reviewed and future prospects are assessed, paying special attention to steel bridges, port facilities, and steel-structure houses and buildings including utility piping. The subjects covered are the increasing use of unpainted weathering steel for bridges, new introduction of weathering steel for coastal use, common adoption of heavy-duty coating systems for major long-span bridges over straits or in bay areas, widespread application of various linings for marine piles, expanding use of galvanized large structural members for steel-structure buildings, recent use of galvanized steel channels for steel-framed housing, and current corrosion protection of utility piping. In view of the growing demand for extended service life of infrastructures and buildings to cope with the labor shortage caused by the aging of society and to promote protection of the environment and conservation of energies and resources, the importance of corrosion engineering is emphasized.