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The Numerical Simulation of Moisture Transportation in Unsaturated Concrete of Underwater Tunnel

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Abstract:

Moisture transportation is a key factor to affect the long-term safety of underwater concrete tunnel. According to the inside and outside environment of tunnel, the moisture transportation equation in unsaturated concrete of underwater tunnel was raised. Finite difference method was adopted to solve the nonlinear partial differential equation of moisture diffusion. The study shows that the changes of water saturation in concrete are mainly concentrated in the surface of tunnel wall and amplitude is gradually slowing down over time. Saturation changes greater in the outside than inside. The wetting state is more obvious than drying state.

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Periodical:

Applied Mechanics and Materials (Volumes 275-277)

Pages:

1190-1193

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.275-277.1190

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Online since:

January 2013

Authors:

Yuan Zhu Zhang, Xiao Zhen Li, Xin Jiang Wei

Keywords:

Finite Difference Method (FDM), Moisture, Underwater Tunnel, Unsaturated Concrete

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] Wang mengshu: Chinese Journal of Rock Mechanics and Engineering, Vol. 27(2008), P. 2161-2172. (In Chinese).

Google Scholar

[2] Zhao Tiejun: Permeability of Concrete (Science Press, China, Beijing 2006). (In Chinese).

Google Scholar

[3] Nilsson L.O., in: Durability of Concrete in Saline Environment, edited by Almqvist, Wiksell Tryckeri. Cementa Publication, Sweden(1996).

Google Scholar

[4] Carola K. Edvardsen, in: Deterioration modelling model verification through in-situ tests Great Belt Link tunnel. First International Symposium Proceeding Safe & Reliable Tunnels Innovative European Achievements. Denmark (2004).

Google Scholar

[5] Richards L.A.: Physics, Vol. 1 (1931),P. 318-333.

Google Scholar

[6] Savage, B.M. and Janssen, D.J.: ACI Materials Journal, Vol. 94(1997), P. 94.

Google Scholar

[7] C. Leech,D. Lockington,R. and HOOTON: ACI Materials Journal , Vol. 105(2008),P. 44–51.

Google Scholar

[8] Bachmat, Y., Bear, J.: Earth and Environmental Science, Vol. 1(1986), P. 213-240.

Google Scholar

[9] ZP Bažant, LJ Najjar: Material and Structure. Vol. 25(1972),P. 3-10.

Google Scholar

[10] Xi Y., Bažant Z.P. and Molina, L.: Journal of Advanced Cement-Based Materials. Vol. 1(1994), P. 248-266.

Google Scholar

[11] Saetta, A.V., Scotta, R. V. and Vitaliani, R.V.: ACI Materials Journal, Vol. 90(1993), P. 441-451.

Google Scholar

[12] Gummerson, R., Hall, C., and Hoff, W.D.: Nature, Vol. 281(1979),P. 56-57.

Google Scholar

[13] CEB-FIP Model Code for Concrete Structures 1990, Evaluation of the time dependent behavior of concrete, Bulletin d'Information No. 199, Comite European du Beton/Federation Internationale de la Precontrainte, Lausanne, (1991).

DOI: 10.1680/ceb-fipmc1990.35430

Google Scholar

[14] Lei Zhidong, Yang Shixiu and Xie Shenchuan: Soil water dynamics (Tsinghua University Press, China, Beijing 1988). (In Chinese).

Google Scholar

[15] Li Chunqiu, Li Kefei and CHEN Zhaoyuan: Tsinghua Science and Technology, Vol. 13(2008), P. 696-701.

Google Scholar