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Author Bastidas-Arteaga, Emilio ♦ Stewart, Mark G.
Source Hyper Articles en Ligne (HAL)
Content type Text
Publisher Elsevier
File Format PDF
Language English
Subject Keyword Benefit-to-Cost Ratio ♦ chloride ingress ♦ adaptation ♦ reliability ♦ climate change ♦ reinforced concrete ♦ spi ♦ sde ♦ Engineering Sciences [physics]/Civil Engineering ♦ Engineering Sciences [physics]/Materials ♦ Environmental Sciences/Global Changes
Abstract Reinforced concrete (RC) structures are subject to environmental actions affecting their performance, serviceability and safety. Among these actions, chloride ingress leads to corrosion initiation and its interaction with service loading could reduce its operational life. Experimental evidence indicates that chloride ingress is highly influenced by weather conditions in the surrounding environment and therefore by climate change. Consequently, both structural design and maintenance should be adapted to these new environmental conditions. This work focuses on the assessment of the costs and benefits of two climate adaptation strategies for new RC structures placed in chloride-contaminated environments under various climate change scenarios. Their cost-effectiveness is measured in terms of the Benefit-to-Cost Ratio (BCR) and the probability that BCR exceeds unity –i.e., Pr(BCR>1). It was found that increasing concrete strength grade is more cost-effective than increasing design cover. The results also indicate that the cost-effectiveness of a given adaptation strategy depends mainly on the type of structural component, exposure conditions and climate change scenarios.
ISSN 01674730
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-01-01
Journal Structural Safety
Volume Number 52
Page Count 14
Starting Page 40
Ending Page 53