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Corrosion Characterization at Surface and Subsurface of Iron-Based Buried Water Pipelines

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dc.contributor.author Yeshanew, Dessalegn Ahmed
dc.contributor.author Jiru, Moera Gutu
dc.contributor.author Ahmed, Gulam Mohammed Sayeed
dc.contributor.author Badruddin, Irfan Anjum
dc.contributor.author M. Soudagar, Manzoore Elahi
dc.contributor.author Kamangar, Sarfaraz
dc.contributor.author Tolcha, Mesay Alemu
dc.date.accessioned 2023-06-19T13:15:28Z
dc.date.available 2023-06-19T13:15:28Z
dc.date.issued 2021-10-07
dc.identifier.uri https://repository.ju.edu.et//handle/123456789/8217
dc.description.abstract Water pipe surface deterioration is the result of continuous electrochemical reactions attacking the surface due to the interaction of the pipe surface with environments through the time function. The study presents corrosion characterization at the surface and sub-surface of damaged ductile iron pipe (DIP) and galvanized steel (GS) pipes which served for more than 40 and 20 years, respectively. The samples were obtained from Addis Ababa city water distribution system for the analysis of corrosion morphology patterns at different surface layers. Mountains 8.2 surface analysis software was utilized based on the ISO 25178-2 watershed segmentation method to investigate corrosion features of damaged pipe surface and to evaluate maximum pit depth, area, and volume in-situ condition. Based on the analysis maximum values of pit depth, area and volume were 380 µm, 4000 µm2 , and 200,000 µm3 , respectively, after 25% loss of the original 8 mm thickness of DIP. Similarly, the pit depth of the GS pipe was 390 µm whereas the maximum pit area and volume are 4000 µm2 and 16,000 µm3 , respectively. In addition, characterizations of new pipes were evaluated to study microstructures by using an optical microscope (OM), and a scanning electron microscope (SEM) was used to analyze corrosion morphologies. Based on the SEM analysis, cracks were observed at the sub-surface layer of the pipes. The results show that uniform corrosion attacked the external pipe surface whereas pitting corrosion damaged the subsurface of pipes. The output of this study will be utilized by water suppliers and industries to investigate corrosion phenomena at any damage stage. en_US
dc.language.iso en_US en_US
dc.subject corrosion damage en_US
dc.subject iron pipes en_US
dc.subject surface characterization en_US
dc.subject corrosion mechanisms en_US
dc.subject image processing en_US
dc.title Corrosion Characterization at Surface and Subsurface of Iron-Based Buried Water Pipelines en_US
dc.type Article en_US


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