Corrosion Assessment of a Weathering Steel Bridge Structure after 30 Years of Service
| Autor: | Damian Wojda, Tomasz Wierzbicki, Leszek Komorowski, Katarzyna Bilewska, Izabela Kunce, Urszula Paszek, Agnieszka Królikowska, Katarzyna Zacharuk |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science 0211 other engineering and technologies chemistry.chemical_element Weathering 02 engineering and technology Weathering steel engineering.material Article Corrosion Deck Bridge engineering General Materials Science Coal bridge inspection 021108 energy Microscopy QC120-168.85 business.industry Metallurgy QH201-278.5 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) TK1-9971 weathering steel Cracking chemistry Descriptive and experimental mechanics engineering Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology business Carbon protective ability index |
| Zdroj: | Materials, Vol 14, Iss 3788, p 3788 (2021) Materials Volume 14 Issue 14 |
| ISSN: | 1996-1944 |
| Popis: | The first steel with improved resistance towards atmospheric corrosion, the so-called weathering steel, was patented in the USA in 1933 and was initially used for coal railway cars, and after that, in building and bridge engineering. Weathering steels show higher corrosion resistance than carbon steels in many types of atmosphere due to their ability to form a compact, stable, adherent and protective patina during the time of exposure. Morphological evaluation of the appearance of the corrosion product layer, together with phase analysis of its components, can enable determination of the type of patina and the degree of protection of the steel. To support the visual assessment of a patina, a check based on the qualitative and quantitative phase analysis of its components may be carried out, and the PAI (Protective Ability Index) can be calculated. The estimation of the corrosion processes on original Polish-made weathering steel (12HNNbA) was carried out on a 30-year-old bridge in Poland. There are some structural problems within the deck derived not only from corrosion but also steel cracking, both inside and outside the boxes, at different heights. Fourteen representative samples of patina were analysed and their phase structures were determined by the X-ray powder diffraction method. The PAIs were determined and analysed. |
| Databáze: | OpenAIRE |
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