United States Department of Transportation
i
Evaluation of Corrosion Prevention and Mitigation Approaches Used on Texas Bridges [Project Summary]
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2023-11-30
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[PDF-417.23 KB]
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Edition:Project Summary Report
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Abstract:The researchers created and validated a Texas corrosion risk assessment map (Figure 1) based on corrosion modeling in which Region 1 corresponds to a low risk of corrosion and Region 6 corresponds to a high risk of corrosion. To assess corrosion prevention and mitigation techniques applied on steel and concrete bridges, over 100 bridges were inspected in depth throughout the state. This inspection included conducting visual inspection and nondestructive evaluation as well as taking concrete cores of these structures. In addition, concrete, steel, paint, and rust samples were collected from the inspected structures for the purpose of conducting further studies and detailed laboratory examinations. A metric was developed to rank the current corrosion and prevention mitigation methods employed on Texas bridges. The researchers developed a decision tool for effective corrosion prevention and mitigation in different regions in Texas and, finally, developed a tool to project the service life of weathering steel bridges.
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