Probabilistic Model for Marine Corrosion of Steel for Structural Reliability Assessment
Publication: Journal of Structural Engineering
Volume 129, Issue 11
Abstract
The assessment of the remaining safe and serviceable life of deteriorating structures using structural reliability theory requires realistic models for corrosion. Using existing data it is shown that corrosion is a nonlinear function of time. A probabilistic model for “at-sea” immersion corrosion of mild and low alloy steels based on fundamental physiochemical corrosion mechanics is presented. The mean-value part of the model is made operational by calibrating its parameters to existing and new field data. A simple model for corrosion uncertainty is presented and its initial calibration discussed. More refined calibration awaits field data over practically significant seawater temperature ranges but particularly for lower temperature regimes. Extensions to the model and its application to other exposure regimes are outlined briefly.
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Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 11 • November 2003
Pages: 1484 - 1493
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jan 15, 2002
Accepted: Jan 31, 2003
Published online: Oct 15, 2003
Published in print: Nov 2003
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