Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 211, Issue -, Pages 228-243Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.03.207
Keywords
Atmospheric corrosion; Accelerated test; Q235B structural steel; Thickness loss; Etch pit; Rust layer; Mechanical property
Categories
Funding
- National Nature Science Foundation of China [51578357]
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Exposure tests in an urban industrial atmosphere and wet/dry cyclic accelerated corrosion tests for Q235B structural steel were performed. The corrosion kinetics under both conditions follow the empirical equation, W = At-n. Inter-crystalline corrosion is the basic cause of mechanical property degradation in both environments. Steel mechanical property degradation is not strongly sensitive to differences in rust layer topographies and corrosion processes; as long as the microscopic mechanisms of corrosion are identical and the topographies of etch pits are similar, the accelerated corrosion test can simulate atmospheric corrosion and accurately predict the degradation pattern of steel mechanical properties in an atmospheric environment. (C) 2019 Elsevier Ltd. All rights reserved.
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