Techno Press
Techno Press

Computers and Concrete   Volume 20, Number 5, November 2017, pages 511-519
DOI: http://dx.doi.org/10.12989/cac.2017.20.5.511
 
Effect of cover cracking on reliability of corroded reinforced concrete structures
Hua-Peng Chen and Jaya Nepal

 
Abstract     [Full Text]
    The reliability of reinforced concrete structures is frequently compromised by the deterioration caused by reinforcement corrosion. Evaluating the effect caused by reinforcement corrosion on structural behaviour of corrosion damaged concrete structures is essential for effective and reliable infrastructure management. In lifecycle management of corrosion affected reinforced concrete structures, it is difficult to correctly assess the lifecycle performance due to the uncertainties associated with structural resistance deterioration. This paper presents a stochastic deterioration modelling approach to evaluate the performance deterioration of corroded concrete structures during their service life. The flexural strength deterioration is analytically predicted on the basis of bond strength evolution caused by reinforcement corrosion, which is examined by the experimental and field data available. An assessment criterion is defined to evaluate the flexural strength deterioration for the time-dependent reliability analysis. The results from the worked examples show that the proposed approach is capable of evaluating the structural reliability of corrosion damaged concrete structures.
 
Key Words
    lifecycle performance; stochastic deterioration modelling; structural reliability; reinforcement corrosion; residual strength
 
Address
Hua-Peng Chen: Department of Engineering Science, University of Greenwich at Medway, Chatham Maritime, Kent ME4 4TB, U.K.
Jaya Nepal: School of Architecture, Computing & Engineering, University of East London, London E16 2RD, U.K.
 

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