An Investigation of the Influence of Corroded Galvanized Iron Pipeline Through Soil Properties

Abstract

This research aims to investigate the influence of soil engineering properties on the corrosion of current-buried galvanized iron pipes. Research has been done on the corrosion behavior of current steel pipelines in soil media that are utilized to transport fire systems. To investigate the effects of moisture content, pH, and chemical content on soil properties, soil samples have been brought into the laboratory. The findings showed that the contents and composition of the soil in the studied area varied significantly. The pipe was severely attacked by a soil medium that had a higher moisture content and a lower pH. Energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) were used to determine the surface morphology and elemental distribution. The findings of the analysis indicated that these soil characteristics affected the steel pipe that was buried. Results from fieldwork indicated moisture content as the most influential factor in metal loss. The soil samples have high concentrations of silicon, iron, and aluminum oxides, according to the XRF results. The soil's pH value may decrease due to a higher aluminum oxide content. Iron oxide was identified as a dominant mineral by SEM-EDX testing, and it plays a significant role in the composition of corrosion products. Corrosion products would remain on the steel surface in soils, protecting the steel from further corrosion. This research identified that moisture content is the most significant governing factor on metal loss, while other soil properties have a strong to modest influence on corrosion growth. The findings of this investigation may help determine the mechanism of corrosion and forecast the service life of pipeline steel. The study's findings offer business owners numerous benefits, including the ability to assess corrosion failure at an early stage. Additionally, the study's data will be crucial for estimating a pipeline's remaining lifespan and determining when maintenance and replacement should be performed.