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<p>Port Louis, which is the harbour and capital city of Mauritius, is currently undergoing significant infrastructural developments. To get a better insight into the design and integrity of steel infrastructures in the port area, this paper investigates the corrosion behaviour of carbon steel in the seawater environment in the harbour of Mauritius. Samples of carbon steel were exposed in the atmospheric, splash, tidal and immersion zones at a site in the port area. They were removed after 73, 301 and 414 days of exposure in sets of 4. The corrosion rate was determined using the weight loss method and the corrosion mechanism was determined using Raman, XRD and SEM/EDS tests. It was observed that the corrosion loss in Port Louis is similar or higher than that in several other port areas around the world. The corrosion loss was highest in the splash zone. Microbiologically induced carbonate precipitation (MICP) and Accelerated low water corrosion (ALWC) were observed in the tidal and immersion zones.</p> Graphical Abstract <p></p>

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Mechanistic investigation into the marine corrosion of carbon steel in a small Island state

  • 期刊论文

  • 发表日期：

    2025年10月5日

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  • B. Yashwansingh R. Surnam,
  • Stella Pedrazzini,
  • Xingyu Ma,
  • Christopher Bilsland,
  • Yashwantraj Seechurn,
  • Yasheel Rugbur

摘要

Port Louis, which is the harbour and capital city of Mauritius, is currently undergoing significant infrastructural developments. To get a better insight into the design and integrity of steel infrastructures in the port area, this paper investigates the corrosion behaviour of carbon steel in the seawater environment in the harbour of Mauritius. Samples of carbon steel were exposed in the atmospheric, splash, tidal and immersion zones at a site in the port area. They were removed after 73, 301 and 414 days of exposure in sets of 4. The corrosion rate was determined using the weight loss method and the corrosion mechanism was determined using Raman, XRD and SEM/EDS tests. It was observed that the corrosion loss in Port Louis is similar or higher than that in several other port areas around the world. The corrosion loss was highest in the splash zone. Microbiologically induced carbonate precipitation (MICP) and Accelerated low water corrosion (ALWC) were observed in the tidal and immersion zones.

Graphical Abstract