Longer lifetimes for major bridges
The use of nickel-containing stainless steel rebar in bridges worldwide has been growing—although perhaps not as quickly as motorists wish when queuing impatiently while a lane or two of a bridge or elevated roadway is being dug up and repaired. The relatively quick corrosion of carbon or epoxy coated rebar results in cracking of the concrete and thus the need for major maintenance, leading to blocked off lanes of traffic while the concrete is removed and the rebar replaced. Today, transportation authorities are increasingly factoring in the indirect costs to society of traffic delays (wasted fuel, wasted time) as well as environmental costs (air pollution, landfill costs) when specifying construction materials. This holistic thinking makes the selection of stainless steel even more clearly justifiable.