Durability Design of Tunnel Concrete Lining under Chloride Attack

Lu Feng Yang; Hong Bin; Yu Bo

doi:10.4028/www.scientific.net/AMR.594-597.1014

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 594-597Durability Design of Tunnel Concrete Lining under...

Durability Design of Tunnel Concrete Lining under Chloride Attack

Abstract:

Chloride induced corrosion of reinforcing steel is one of major causes of deterioration of tunnel concrete lining under chloride attack. In this paper, a finite element model for chloride ions transport in tunnel concrete lining was proposed based on the Fick’s second law of diffusion. The governing partial differential equation was solved numerically in space as a boundary-value problem and in time as an initial-value problem by means of the finite element formulations. The maximum allowable value of chloride diffusion coefficient of tunnel concrete lining with service life of 100a was achieved and some constructive suggestions for durability design of tunnel concrete lining under chloride attack were also proposed.

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Periodical:

Advanced Materials Research (Volumes 594-597)

Pages:

1014-1017

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.594-597.1014

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Online since:

November 2012

Authors:

Lu Feng Yang, Hong Bin, Yu Bo

Keywords:

Chloride, Corrosion, Diffusion Coefficient, Durability, Tunnel Lining

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References

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