Reliability Evaluation of Concrete Cover for Buried Structures from Chloride-Induced Corrosion Perspective

Abstract All design specifications for steel reinforced concrete structures provide guidelines for the thickness of minimum concrete cover over the reinforcing steel. The thickness of the concrete cover is a function of many considerations such as cracking, migration of deleterious substances that c...

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Bibliographic Details
Published in:Journal of bridge engineering 2020-08, Vol.25 (8)
Main Authors: Samtani, Naresh C, Kulicki, John M
Format: Article
Language:English
Subjects:
Bridge construction
Buried structures
Chlorides
Civil engineering
Computer simulation
Concrete
Concrete structures
Corrosion
Cracking (corrosion)
Design specifications
Evaluation
Monte Carlo simulation
Parametric analysis
Reinforced concrete
Reinforcing steels
Reliability
Reliability analysis
Statistical methods
Steel
Steel construction
Technical Papers
Thickness
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Summary:Abstract All design specifications for steel reinforced concrete structures provide guidelines for the thickness of minimum concrete cover over the reinforcing steel. The thickness of the concrete cover is a function of many considerations such as cracking, migration of deleterious substances that can cause corrosion of steel, or constructability concerns. This paper examines the current state of practice for concrete covers for buried steel reinforced concrete structures from the perspective of chloride-induced corrosion. The evaluation is performed using the fully probabilistic fib model for chloride-induced corrosion. Results of parametric analysis based on the Monte Carlo simulation procedure are presented. Correlation is made with a reliability index to permit an evaluation of the current codes based on reliability principles.
ISSN:1084-0702
1943-5592
DOI:10.1061/(ASCE)BE.1943-5592.0001572