[1] Tong Teng, Liu Zhao,. Comparison study of durability design for concrete bridges:Chinese-code and Eurocode [J]. Journal of Southeast University (English Edition), 2011, 27 (4): 436-440. [doi:10.3969/j.issn.1003-7985.2011.04.017]

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Comparison study of durability design for concrete bridges:Chinese-code and Eurocode()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

27

Issue:

2011 4

Page:

436-440

Research Field:

Traffic and Transportation Engineering

Publishing date:

2011-12-31

Info

Title:

Comparison study of durability design for concrete bridges:Chinese-code and Eurocode

Author(s):

Tong Teng;  Liu Zhao

Key Laboratory of RC & PC Structures of Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

bridge;  durability;  carbonization;  chloride corrosion;  concrete cover

PACS:

U445.71

DOI:

10.3969/j.issn.1003-7985.2011.04.017

Abstract:

Differences and similarities of durability design for concrete bridges in Chinese-code and Eurocode are identified and discussed. Exposure environment classes and regulations of the minimum concrete cover and strength of the two codes are compared and analyzed. Numerical calculations for predicting the durable life of bridges related to carbonization and chlorides corrosion(marine and de-icing)are conducted. The results show that provisions in the two codes can satisfy the durability requirements under carbonization whereas they cannot guarantee the durability for bridges in spray and splash zones. Enhancing the waterproof capacity and reducing the frequent use of de-icing agents are vital to improving the bridge durability. Some recommendations for upgrading the durability are also included.

References:

[1] Ministry of Housing and Urban-Rural Development of the People’s Republic of China. GB/T 50476—2008 Code for durability design of concrete structures [S]. Beijing: China Architectural Engineering Association, 2008.(in Chinese)
[2] European Committee for Standardization. EN1992-1-1:2004 Design of concrete structures [S]. Brussels, Belgium: European Committee for Standardization, 2004.
[3] Niu D. Standard for durability assessment of concrete structure [M]. Beijing: Science Press, 2003:14-19.(in Chinese)
[4] Bamforth P B, Price W F, Emerson M. An international review of chloride ingress into structural concrete [M]. Solihall, UK: Taywood Engineering Ltd Technology Division, 1997.
[5] Nilsson L O, Andersen A, Luping T, et al. Chloride ingress data from field exposure in a Swedish road environment [M]. Gothenburg, Sweden: Chalmers University of Technology, 2000: 1-40.
[6] Weyers R E. Service life model for concrete structures in chloride laden environment [J]. ACI Journal, 1988, 95(4): 445-453.
[7] Zhu Y X, Zhang Y C. Coastal exposure test of durability of reinforced concrete using activated admixtures [J]. Ocean Engineering, 2004, 22(4): 60-66.(in Chinese)
[8] Lindvall A, Andersen A, Nilsson L O. Chloride ingress data from Danish and Swedish road bridges exposed to splash from de-icing salt [C]// Second International RILEM Workshop on Testing and Modelling the Chloride Ingress into Concrete. Stockholm, Sweden, 2000: 85-103.
[9] Tong T, Pu W, Liu Z. Some discussions on durability of precast segmental concrete bridges under chemical attack environment [C]//The 19th National Conference of Bridge. Shanghai, China, 2010: 1164-1169.(in Chinese)

Memo

Memo:

Biographies: Tong Teng(1988—), male, graduate; Liu Zhao(corresponding author), male, doctor, professor, mr.liuzhao@seu.edu.cn.
Citation: Tong Teng, Liu Zhao. Comparison study of durability design for concrete bridges: Chinese-code and Eurocode[J].Journal of Southeast University(English Edition), 2011, 27(4):436-440.[doi:10.3969/j.issn.1003-7985.2011.04.017]

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