| Author | Search for: Zhang, J.1; Search for: Ebrahimi, Nafiseh1; Search for: Lai, David |
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| Affiliation | - National Research Council Canada. Construction
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| Format | Text, Article |
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| Conference | 10th International Conference on Short and Medium Span Bridges, July 31 - August 3, 2018, Quebec City, QC Canada |
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| Abstract | This study has compared the galvanic corrosion risk of two types of bolt for ASTM A1010 steel that is used in construction of a new generation of corrosion-resistant stele bridges. The high corrosion resistance of A1010 steel with a more positive corrosion potential imposes a risk of galvanic corrosion with the connection bolts in direct electrical contact. The galvanic corrosion was studied between A1010 steel and galvanized ASTM A325 Type I bolt and ASTM A193 B8 class 2 bolt, The result was compared to that of A325 bolt and weathering steel. Galvanic corrosion risk was evaluated through experimental investigation in the cells of aerated salt solution and was further validated by visual examinations of bolted steel plates in salt spray testing chamber. The effect of temperature and acidity of environments was also investigated to illustrate the impact of climate change. It shows that not only the galvanic corrosion risk of using B8 bolt in A1010 steel bridges is much smaller than that of A325 bolt, but also it is affected much less by temperature rise and increase in acidity. The study suggests that climate change may have very different effects on different components of a steel bridge, and effect on galvanic corrosion could be much worse than the individual components. Furthermore, the corrosivity of atmosphere for bridge design such as pollutants in an atmosphere and temperature rise needs to be reviewed and re-evaluated under climate change. |
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| Publication date | 2018 |
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| Publisher | [The Conference] |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | deb1a9ab-fa97-419d-959f-023a333de624 |
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| Record created | 2021-10-06 |
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| Record modified | 2023-11-16 |
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