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Stochastic Assessment of Timing and Efficiency of Maintenance for Corroding RC Structures
Reinforced concrete (RC) structures in a chloride environment are exposed to a particularly aggressive form of deterioration. Managing the maintenance and repair of structures subjected to these conditions is an important issue facing asset owners and operators. In the present paper, the criterion f...
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Published in: | Journal of structural engineering (New York, N.Y.) N.Y.), 2009-08, Vol.135 (8), p.887-895 |
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container_title | Journal of structural engineering (New York, N.Y.) |
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creator | Mullard, J. A Stewart, M. G |
description | Reinforced concrete (RC) structures in a chloride environment are exposed to a particularly aggressive form of deterioration. Managing the maintenance and repair of structures subjected to these conditions is an important issue facing asset owners and operators. In the present paper, the criterion for repair is the extent of corrosion induced cracking. Common maintenance criteria and maintenance techniques are described and these are incorporated into a two-dimensional spatial time-dependent reliability model. This allows the number, timing, and extent of maintenance actions to be predicted over the service life of RC structures. The analysis includes the effect of inspection interval, maintenance technique, repair efficiency, and repair threshold. Results are presented for a typical RC bridge deck subject to a corrosive marine environment. It was found that repair efficiency affecting time to corrosion initiation of repaired concrete is more critical to the performance of the repair than the repair efficiency that affected corrosion rate. |
doi_str_mv | 10.1061/(ASCE)0733-9445(2009)135:8(887) |
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The analysis includes the effect of inspection interval, maintenance technique, repair efficiency, and repair threshold. Results are presented for a typical RC bridge deck subject to a corrosive marine environment. 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source | AUTh Library subscriptions: American Society of Civil Engineers |
subjects | Assessments Bridge decks Chloride Chlorides Concrete structures Concretes Corrosion Corrosion rate Criteria Deterioration Exposure Fracture mechanics Inspection Intervals Maintenance Marine Marine environments Mathematical models Offshore structures Operators Reinforced Concrete Repair Service life Spatial analysis Stochastic processes Stochasticity Stress corrosion cracking Structural engineering TECHNICAL PAPERS Thresholds Time factors Time measurements |
title | Stochastic Assessment of Timing and Efficiency of Maintenance for Corroding RC Structures |
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