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标题：Durability assessment of concrete bridge deck considering waterproof membrane and epoxy-coated reinforcement
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作者：Petr Konečný ; Petr Konečný ; Petr Lehner 等
期刊名称：Perspectives in Science
印刷版ISSN：2213-0209
电子版ISSN：2213-0209
出版年度：2016
卷号：7
页码：222-227
DOI：10.1016/j.pisc.2015.11.036
语种：English
出版社：Elsevier
摘要：Summary The effect of waterproof membrane and steel reinforcement protection on the concrete bridge deck is modeled. The attention is paid to the durability prediction related to steel reinforcement corrosion initiation based on the chloride penetration. Thus 2-D finite element chloride ingress model is applied. The transient finite element model serves to solve Fick's second diffusion law using the computer tool compatible with the Matlab environment. The model focuses on the transport of chloride ions through a reinforced concrete bridge deck with and without the effect of waterproof membrane and on an estimate of the concentration of chlorides at the reinforcement level or in places with damage to the epoxide coating of the reinforcement. The model allows the incorporation of damage to the waterproof insulation under the asphalt coating. The time to chloride induced onset of corrosion is predicted and results are compared. The effect of water proof membrane reinforcement protection strategy typical for Central Europe and epoxy-coating protection widely used in North-Western United States is evaluated.
关键词：Concrete; Finite element analysis; Durability assessment; Chloride ingress; Aging; Corrosion; Reinforcement; Initiation; Propagation; Chlorides;