Evaluation of concrete structures in marine environment: Geiger Key Bridge

G. Loreto; M. Di Benedetti; A. Nanni

doi:10.1117/12.914862

4 April 2012 Evaluation of concrete structures in marine environment: Geiger Key Bridge

G. Loreto, M. Di Benedetti, A. Nanni

Proceedings Volume 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012; 83472C (2012) https://doi.org/10.1117/12.914862
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Reinforced concrete marine structures are highly vulnerable to corrosion due to chloride ion attack; the severity of the attack being dependent on, among other factors, the prevailing climatic condition. The aggressiveness of the warm marine environment of Florida has led to the premature deterioration of numerous bridges and building along the coastline. This paper describes a methodology for structural assessment of concrete bridges while incorporating analysis uncertainty. The procedure includes the use of visual, electrochemical and non-destructive methods in order to define the cause and the level of concrete deterioration. A probabilistic mechanistic model is used to generate the distribution of the time to corrosion initiation based on statistical models of the governing parameters obtained from field data. The proposed methodology is applied to predict the time to corrosion initiation and predict the residual service life of the reinforcing steel in the concrete girders of the Geiger Bridge in Key West, FL.

Citation Download Citation

G. Loreto, M. Di Benedetti, and A. Nanni "Evaluation of concrete structures in marine environment: Geiger Key Bridge", Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 83472C (4 April 2012); https://doi.org/10.1117/12.914862

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