Researchers think steel mix could give bridges a 75-year lifecycle

05/28/2010 | Daily Commercial News

Bridge corrosion occurs when the patina of surface rust falls away and road salt causes chemical reactions in the steel. But some Canadian researchers say that might be avoided if the steel were made with varying amounts of chromium and molybdenum with nickel and copper. Their research looked at why the corrosion occurs and what might be done to prolong the life of steel box girder bridges.

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