Abstract
As structures built now will be expected to last well past 2064 (50 years) it is vital that the effect of climate change be considered in their design and material selection. In particular changes in the rate of corrosion of metal components must be considered. To this end this study estimates the maximum likely change in the corrosion rate for the year 2070 so it can be included in current design. Changes in corrosion are estimated for 11 coastal and inland locations in Australia. For each station the climatic data (3-hourly) in 2070 is estimated by modifying current data with probable changes based on two climate change models (CSIRO: CSIRO-Mk 3.5 and MRI: MRI-CGCM 3.2.2). The former is for high global warming rate and the later the A1FI scenario. This climatic data is then run the Corrosion “predictor” (a multi-scale process model) to predict corrosion at each location. It is found that significant changes occur with corrosion in coastal locations increasing substantially, in contrast the corrosion at inland locations will decrease moderately. The increase in coastal locations is associated with a greater build up of salt due to less frequent rain evens while the reduction in inland locations is associated with a reduction in RH and thus surface wetness.
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Acknowledgments
We would like to acknowledge the help of Dr. Leanne Webb from CSIRO Marine and atmospheric Research, Aspendale, Victoria, Australia, in selecting appropriate climate models for this study.
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Trivedi, N.S., Venkatraman, M.S., Chu, C. et al. Effect of climate change on corrosion rates of structures in Australia. Climatic Change 124, 133–146 (2014). https://doi.org/10.1007/s10584-014-1099-y
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DOI: https://doi.org/10.1007/s10584-014-1099-y