Painting has traditionally
been used to protect steel structures from corrosion. Over the last 30 years
dehumidification
has been adapted and implemented as corrosion protection for
enclosed steel surfaces in bridge structures. For this use
dehumidification has
been proven to be superior in all respects, i.e. technically, economically and
environmentally. It has been chosen as the sole means of corrosion protection
for the internal surfaces of steel box girders and other components on many
major bridges in countries over the entire world. The paper presents
descriptions and examples of dehumidification systems, the advantages of
dehumidification, key technical and economical figures, as well as experience
from operation and
maintenance.