Title: Lifecycle performance deterioration modelling of corroded reinforced concrete structures

Authors: Hua-Peng Chen; Jaya Nepal

Addresses: School of Engineering and Science, University of Greenwich, Chatham, Kent, ME4 4TB, UK ' School of Architecture, Computing and Engineering, University of East London, Docklands Campus, London, E16 2RD, UK

Abstract: In lifecycle management of corrosion affected reinforced concrete structures, it is difficult to correctly assess 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 due to reinforcement corrosion, which is examined by the experimental data available. An assessment criterion is defined to evaluate the flexural strength deterioration for the time-dependent reliability analysis. The results from the numerical example show that the proposed approach is capable of evaluating the structural deterioration and lifecycle performance of the concrete structures suffering from reinforcement corrosion.

Keywords: lifecycle performance; structural reliability; deterioration modelling; reinforcement corrosion; reinforced concrete structures; corroded structures; lifecycle management; structural resistance deterioration; stochastic modelling; flexural strength; bond strength.

DOI: 10.1504/IJLCPE.2016.082710

International Journal of Lifecycle Performance Engineering, 2016 Vol.2 No.1/2, pp.111 - 126

Accepted: 18 May 2016
Published online: 08 Mar 2017 *

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