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Chapter
May 14, 2014

Reliability Assessment of RC Structures Subjected to Carbonation by Incorporating Spatial Variations

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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Go to Sustainable Development of Critical Infrastructure
Sustainable Development of Critical Infrastructure
Pages: 115 - 122

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Published online: May 14, 2014

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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]
Dan M. Frangopol [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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