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Reliability analysis and life cycle costing of rehabilitation strategies for RC structures exposed to marine environment

Sabtu, Hilyati and Stewart, Mark G. Reliability analysis and life cycle costing of rehabilitation strategies for RC structures exposed to marine environment. In: Talent Management Symposium (TMS 2012) , 11-12 July 2012, Australia.

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Abstract

This paper presents a reliability analysis to predict the probability of corrosion damage and to improve the management of RC structures particularly located in marine environments. The reliability analysis incorporates deterioration models, spatial variability, random field analysis, rehabilitation strategies and life-cycle costing. This study focus only on chloride-induced cracking as the corrosion due to the chloride penetration could possibly cause severe cracking at concrete surfaces. This study was aim to improve the existing crack propagation models by conducting accelerated corrosion tests for transverse reinforcement, to model the spatial variability of RC columns by using non-stationary random field analysis and to estimate the life cycle costing of rehabilitation strategies for evaluating the economic performance of 24 repair alternatives related to chloride-induced corrosion problem. The incorporation of the reliability analysis with the life cycle costing of rehabilitation strategies have a potential to be a massive contribution for decision makers, asset owners and engineers to control the initial, present and future cost of assets ownership. In order to improve the existing crack propagation models, the accelerated corrosion tests are undertaken in two stages; the first stage which has been completed was focused on the effect of reinforcement confinement (including transverse reinforcement) and spacing of reinforcing bars on concrete cover cracking and the second stage will be conducted to improve the existing crack propagation models in order to provide more realistic results. In this paper, results from the first stage of accelerated corrosion tests are presented and results revealed that confinement and spacing of reinforcing bars have a significant effect on the rate of crack propagation.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA630-695 Structural engineering (General)
Divisions: Faculty of Technology Management and Business > Department of Technology Management
Depositing User: Normajihan Abd. Rahman
Date Deposited: 23 Nov 2012 09:36
Last Modified: 23 Nov 2012 09:36
URI: http://eprints.uthm.edu.my/id/eprint/2822
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