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- W2014679358 abstract "ABSTRACT A probabilistic approach of the corrosion risk of reinforcements embedded in a concrete beam due to the carbonation of the cover concrete is proposed, based on the computation of the Lind-Hasofer reliability index. The a priori most influential parameters governing the carbonation of concrete have been accounted for namely: the diffusion coefficient of carbon dioxide in concrete, and the concrete cover depth. A comprehensive and efficient finite elements method has been achieved for modeling the penetration of carbon dioxide in concrete. The method takes into account the strong non-linearties in relation with this phenomenon: the non-constant diffusion coefficient of carbon dioxide in the cross-section of the beam, and the steep slope profile of the calcium content in concrete due to its transformation when calcite precipitates. The improved gradient algorithm given by Rackwitz/Fiessler has been used for searching the reliability index. In order to avoid an extensive number of finite elements computations in the gradient algorithm, a quadratic response surface method has been resorted to. The optimal cover thickness of a reinforced concrete beam has been determined thanks to this probabilistic approach." @default.
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- W2014679358 date "2004-11-01" @default.
- W2014679358 modified "2023-10-18" @default.
- W2014679358 title "Evaluation probabiliste du risque de corrosion par carbonatation" @default.
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- W2014679358 doi "https://doi.org/10.1080/12795119.2004.9692637" @default.
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