Journal article

Coupled Effect of Soil's Acidity and Saturation on Pitting Corrosion of Buried Cast Iron

Muhammad Wasim, Dilan Robert, Chun-Qing Li, Mojtaba Mahmoodian

GEOTECHNICAL TESTING JOURNAL | AMER SOC TESTING MATERIALS | Published : 2021

Abstract

This paper presents the results produced from long-term tests designed to investigate the key factors affecting the external corrosion of cast iron pipes buried in clayey soil. The coupled effect of varying acidity (pH) and saturation (moisture content) of soil on the corrosion of cast iron buried in soil, including pitting corrosion, is thoroughly examined. Based on the observations and analysis of the test results, it is found that the coupled effect of high acidity (2.5 pH) and high saturation (80 %) of soil could create an accelerating environment for corrosion in the short term. In addition, the coupled effect of low acidity (5 pH) and high saturation (80 %) of soil could lead to a high..

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University of Melbourne Researchers

Grants

Awarded by Australian Research Council


Funding Acknowledgements

The financial support from the Australian Research Council under DP140101547, LP150100413, and DP17010224 is gratefully acknowledged.