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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/920045
- Strength, reliability and asset management of corroding RC structures
Stewart, Mark G.
- The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
- Many reinforced concrete (RC) structures are deteriorating due to chloride and/or carbonation induced corrosion. A spatial time-dependent structural reliability model is developed that calculates (i) strength degradation with time, (ii) probability and extent of corrosion damage (cover cracking) and (iii) probability of collapse for RC structures subject to pitting corrosion. This enables accurate service life predictions to be made. These models include the spatial and temporal variability of cover, concrete strength, chloride exposure, corrosion rate, corrosion initiation, cover cracking, pit depth, etc., as well as the time-dependent variability of loadings. The effect of maintenance strategies, such as periodic inspections, on updated reliability and service life predictions are also estimated. Illustrative examples are given for RC beams whose performance and reliability are updated using visual inspection findings of corrosion damage. Information about service life prediction, and updating based on (new) condition assessment findings, is essential for asset management of deteriorating structures.
- Corrosion & Prevention 2009: The Management of Infrastructure Deterioration. Corrosion & Prevention 2009: The Management of Infrastructure Deterioration: Conference Proceedings (Coffs Harbour, N.S.W. 15-18 November, 2009)
- Australasian Corrosion Association
service life prediction
- Resource Type
- conference paper