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Corrosion and Microstructure Behaviour of Steel Strand Used in Bridges

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Abstract The corrosion and microstructure behavior features, such as steel strand corrosion and corrosive wear of the as-prepared composite coatings and substrates were investigated. It is found that the experimental… Click to show full abstract

Abstract The corrosion and microstructure behavior features, such as steel strand corrosion and corrosive wear of the as-prepared composite coatings and substrates were investigated. It is found that the experimental pitting depth followed a normal distribution and both the location and scale parameters increased with the corrosion degree. The fatigue test results indicated that corrosion could cause a significant decrease in the fatigue life of corroded steel wires. The substrate exhibited corrosion-accelerating wear, while the coatings exhibited wear accelerating corrosion. A method based on 3D measurements and AFGROW software was proposed to predict the remaining fatigue life of corroded steel wires. The predicted fatigue lives agreed well with the test results.

Keywords: corrosion microstructure; microstructure behaviour; corrosion; steel strand; steel

Journal Title: Integrated Ferroelectrics
Year Published: 2020

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