Service Life of Corroding Galvanized Culverts Embedded in Controlled Low-Strength Materials
Publication: Journal of Materials in Civil Engineering
Volume 20, Issue 5
Abstract
The service life of culverts is often defined by the time, or some factor thereof, in which it takes for corrosion to perforate the pipe material. Significant work has been performed in developing and modifying existing models to accurately predict the service life of these culverts for different environments. These existing models are often used for engineered backfill materials, i.e., materials other than natural soils. Limited work has been performed on whether the existing models can adequately predict the service life of culvert materials embedded in engineered fill materials. This research investigated the corrosion performance of galvanized steel culvert embedded in 13 different controlled low-strength materials (CLSM). A model was developed to predict the service life, using statistically significant variables, of galvanized steel culverts embedded in CLSM. The results indicate that existing models for the service life estimates of galvanized culvert embedded in soil are not correlated to the service life model developed in this research and that existing models should not be used for culverts embedded in CLSM.
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Acknowledgments
This work was part of the National Cooperative Highway Research Program (NCHRP) Project 24-12, “Controlled low strength material for backfill, utility bedding, void fill, and bridge approaches.” The opinions and conclusion expressed or implied in this paper are those of the research agency and are not necessarily those of the Transportation Research Board, the National Research Council, the Federal Highway Administration, the American Association of State Highway and Transportation Officials, or the individual states participating in the National Cooperative Highway Research Program.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 20 • Issue 5 • May 2008
Pages: 366 - 374
Copyright
© 2008 ASCE.
History
Received: Dec 21, 2006
Accepted: Jul 13, 2007
Published online: May 1, 2008
Published in print: May 2008
Notes
Note. Associate Editor: John. S. Popovics
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