Chapter
May 14, 2014
Reliability Assessment of RC Structures Subjected to Carbonation by Incorporating Spatial Variations
Authors: T. Hagino [email protected], M. Akiyama [email protected], and Dan M. Frangopol [email protected]Author Affiliations
Publication: Sustainable Development of Critical Infrastructure
Abstract
When carbonation reaches the depth of the rebar embedded into the concrete, the high alkalinity of the concrete pore solution is neutralised and hydration products are dissolved. As carbonation progresses, the corrosion could extend enough to deteriorate the structural performance. In this paper, a time-dependent structural reliability analysis method, taking the carbonation into consideration, is proposed. To predict the corrosion process of reinforced concrete (RC) structures, spatial variability of corrosion has to be considered. A computational procedure to integrate the spatial variability of corrosion due to carbonation into life-cycle reliability assessment of existing RC structures is established. An illustrative example of a RC structure subjected to carbonation is presented. The emphasis is placed on investigating the effects of the spatial variation of inspected carbonation depths on the reliability estimates of RC structures.
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© 2014 American Society of Civil Engineers.
History
Published online: May 14, 2014
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ASCE Technical Topics:
- Carbonation
- Chemical processes
- Chemistry
- Concrete
- Concrete structures
- Corrosion
- Design (by type)
- Deterioration
- Engineering fundamentals
- Engineering materials (by type)
- Environmental engineering
- Geometry
- Materials characterization
- Materials engineering
- Mathematics
- Reinforced concrete
- Spatial variability
- Structural analysis
- Structural design
- Structural engineering
- Structural reliability
- Structure reinforcement
- Structures (by type)
Authors
Affiliations
Department of Civil and Environmental Engineering, Waseda University, Okubo 3-8, Shinjuku-Ku, Tokyo 169-8555, Japan. E-mail: [email protected]
Aff.M.ASCE
Department of Civil and Environmental Engineering, Waseda University, Okubo 3-8, Shinjuku-Ku, Tokyo 169-8555, Japan. E-mail: [email protected]
Dist.M.ASCE
Department of Civil and Environmental Engineering, ATLSS Engineering Research Center, Lehigh University, 117 ATLSS Drive, Bethlehem, PA 18015-4729. E-mail: [email protected]
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