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The Investigation of the Cause and Severity of Corrosion at the Port of Dover

Scobbie, Kieran (2018) The Investigation of the Cause and Severity of Corrosion at the Port of Dover. Master of Research (MRes) thesis, University of Kent,. (KAR id:76758)

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Abstract

This thesis is an investigation into the origins and severity of corrosion caused to the elevated road at the Port of Dover. The research in this thesis is comprised of collecting and analyzing samples, taken uniformly across the bridge as well as providing a recommendation of an adequate protection system based on the results.

There was two occasions of sample collecting, one on the 4th of December 2017 and the second sample collection on the 12th of June 2018. Collected from the old and new parts of the bridge respectively. The sample where stored in a controlled environment until characterized by visual inspection (Scanning Electron Microscopy; SEM), pH, conductivity, X-ray Diffraction (XRD), Electron Dispersive X-ray Fluorescence (EDX) and Raman spectroscopy. From these analyses, the severity, corrosion rates and products could be determined.

The severity of corrosion on the elevated road is not showing signs of structural failure at the present, however, there is corrosion occurring all over the bridge particularly around the bolts where the current paint system has worn off. The most common types if corrosion identified across the bridge are crevice and uniform corrosion.

Carbon-based particulates originating from the diesel emission in the area are a major cause to the observed corrosion types and rates. The particulates create a thin film across the bridge adsorbing other airborne compounds, which contribute to the chemical reaction rates of the corrosion products. Hence, reducing the formation of the carbon(soot) thin films will improve the lifetime of the corrosion protection system. Washing the bridge regularly, is advised to prevent the build-up of the particulates, and that the steel construction of the elevated road is carefully washed and prepared appropriately prior to the addition of the new coating system. The coating system proposed, based on the work in the thesis, is a zinc epoxy/polyurethane paint system.

Item Type: Thesis (Master of Research (MRes))
Thesis advisor: Berko, Aaron
Thesis advisor: Alfredsson, Maria
Uncontrolled keywords: Chemistry, Corrosion, Raman, SEM, X-ray Diffracton, Masters, Port of Dover
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences
SWORD Depositor: System Moodle
Depositing User: System Moodle
Date Deposited: 24 Sep 2019 15:10 UTC
Last Modified: 06 May 2020 03:19 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/76758 (The current URI for this page, for reference purposes)
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