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Sustainability 2017, 9(3), 460; doi:10.3390/su9030460

Impacts of Global Warming and Sea Level Rise on Service Life of Chloride-Exposed Concrete Structures

1
Key Lab of Structure Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Harbin 150090, China
2
Department of architectural engineering, Kangwon National University, Chuncheon-Si 24341, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Yong Han Ahn
Received: 31 January 2017 / Revised: 10 March 2017 / Accepted: 15 March 2017 / Published: 20 March 2017
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Abstract

Global warming will increase the rate of chloride ingress and the rate of steel corrosion of concrete structures. Furthermore, in coastal (atmospheric marine) zones, sea level rise will reduce the distance of concrete structures from the coast and increase the surface chloride content. This study proposes a probabilistic model for analyzing the effects of global warming and sea level rise on the service life of coastal concrete structures. First, in the corrosion initiation stage, an improved chloride diffusion model is proposed to determine chloride concentration. The Monte Carlo method is employed to calculate the service life in the corrosion initiation stage; Second, in the corrosion propagation stage, a numerical model is proposed to calculate the rate of corrosion, probability of corrosion cracking, and service life. Third, overall service life is determined as the sum of service life in the corrosion initiation and corrosion propagation stages. After considering the impacts of global warming and sea level rise, the analysis results show that for concrete structures having a service life of 50 years, the service life decreases by about 5%. View Full-Text
Keywords: global warming; sea level rise; service life; coastal concrete structure; chloride ingress model global warming; sea level rise; service life; coastal concrete structure; chloride ingress model
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Gao, X.-J.; Wang, X.-Y. Impacts of Global Warming and Sea Level Rise on Service Life of Chloride-Exposed Concrete Structures. Sustainability 2017, 9, 460.

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