Effect of Soil’s Acidity and Saturation on Degradation of Fracture Toughness of Buried Cast Iron
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 7
Abstract
There has been limited research in the past on the effect of varying soil’s acidity measured as pH and saturation measured as moisture content on the fracture toughness of buried cast iron as per comprehensive literature review. This paper presents findings obtained from a long-term test designed to investigate the combined effect of varying levels of soil’s acidity and saturation on the fracture toughness of buried cast iron over time. Relations for the change in candidature fracture toughness of the corroded cast iron over time as a function of soil’s pH, moisture content, and corrosion pit depth are developed. Moreover, a relation correlating the change in microstructure and the fracture toughness of the corroded cast iron is also developed. The significance of the current paper is that it reports that soil’s corrosivity induces a change in the microstructure and composition of cast iron, which consequently affects the fracture toughness of the corroded cast iron.
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Data Availability Statement
All data used in the current research is included and presented in this paper.
Acknowledgments
The first author acknowledges the University of Melbourne for offering a research fellowship, during which this paper was written. Financial support from the Australian Research Council under DP140101547, LP150100413, and DP17010224 is gratefully acknowledged.
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 7 • July 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Sep 23, 2019
Accepted: Jan 2, 2020
Published online: Apr 27, 2020
Published in print: Jul 1, 2020
Discussion open until: Sep 27, 2020
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