Evaluation of Soil Corrosion for Low Carbon Steel Pipeline in Minna Environment

Abstract

The research work was investigated to evaluate the potential corrosiveness of soil samples collected from FUTMinna forest along Bida road, Niger State, for their physicochemical properties in steel. Soil samples were collected from five different points to a depth of 1.5 meters. Standard analytical methods were employed on the determination of physicochemical parameters such as pH, resistivity, redox potential, moisture, chloride, temperature and sulphate and samples were evaluated using DVGW, Eyre & Lewis, and AWWA C105 numerical scale. The soil samples are found to be clay and they read pH (5.77-7.48), resistivity (145-193 Ω-m), moisture (4.11-5.73 %), chloride (191-375 mg/kg), and sulphate (240-684 mg/kg). from the results, resistivity, pH, chloride and moisture could be a vital role in the corrosion of buried pipelines. Approaches adopted to investigate these factors elucidate the conditions of the soil samples. Thus, buried steel structures in the area should be protected by organic coating followed by cathodic protection to prevent any form of corrosion.