- Title
- Time-dependent reliability analysis of corrosion-induced concrete cracking
- Creator
- Li, C. Q.; Melchers, Robert E.
- Relation
- ACI Structural Journal Vol. 102, no. 4, p. 543-549
- Publisher
- American Concrete Institute
- Resource Type
- journal article
- Date
- 2005
- Description
- Determining corrosion-induced concrete cracking is essential to predicting the serviceability of corrosion-affected reinforced concrete structures and to instigating maintenance and repairs for the structures. This paper attempts to present a reliability-based methodology for serviceability assessment of corrosion-affected concrete structures, using the performance criterion of concrete crack width. A stochastic model for crack width is developed and a time-dependent method is employed to quantify the probability of serviceability failure so that the time for the structure to be unserviceable and, hence, requiring repairs, can be determined with confidence. A parametric study is also undertaken to identify the factors that affect the failure due to corrosion-induced concrete cracking. A merit of the proposed methodology is that the structural assessment is directly related to one of the design criteria used by practitioners. It is found that corrosion-induced concrete cracking can be modeled as a stochastic process with little autocorrelation and that the corrosion rate is the most important single factor that affects cracking failure. The methodology presented herein can serve as a tool for structural engineers and asset managers in making decisions with regard to the serviceability of corrosion-affected concrete structures.
- Subject
- corrosion; cracking; failure; serviceability; reinforcement corrosion; cover-cracking
- Identifier
- http://hdl.handle.net/1959.13/25326
- Identifier
- uon:339
- Identifier
- ISSN:0889-3241
- Language
- eng
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