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Techlink – U.S. Army Develops Improved Structural Steel and Concrete for Bridges – Technology Available and more…

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The tragic collapse of the Francis Scott Key Bridge in Maryland highlights the frailty of the nation’s infrastructure — especially bridges. An Associated Press analysis found that about 42,400 U.S. bridges are in poor condition, much of it caused by steel corrosion.

 

Solutions to this corrosion problem are hard to find. Alternatives such as epoxy-coated and zinc-plated rebar have been found ineffective at holding off corrosion, while materials like stainless steel and fiber-reinforced polymer are too risky and expensive.

 

The U.S. Army Engineer Research and Development Center is mobilizing to fix this issue. They’ve developed a new structural steel coating that more than triples the bond strength between concrete and steel, preventing corrosion.

 

Keep reading for more details.

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