Experimental Study of the Concrete Structure Performance Degradation of Songhua River Bridge

Abstract:

Songhua River Bridge is an important large concrete bridge engineering in China. Because it is located in complex environment, the reinforcing steel rust, freeze-thaw, artificial damage and washout will result in performance degradation of the concrete structure. The paper firstly invested the climatic environment and local corrosion environment. Then, according to the environment characters, studied the structure endurance degradation regulation combining the laboratory simulation tests and natural exposive tests. Made a group of concrete test specimens according to the true construction field material mixture ratio. The field experiments include air exposure, half soaking and full soaking tests. And the laboratory tests include freeze-thaw test, salt aspic test, chloride ion penetrant test, carbonization test, etc. Through test research, the paper gripped the degradation regulation of bridge concrete property. Then constructed the bridge concrete endurance degradation model, established the theoretical foundation for predict the large bridge service life.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 1306-1310
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.1306
• Online since: August 2013
• Authors: Zhan Ping Song, Tian Bao Yao
• Keywords: Concrete Structure, Degradation Regulation, Exposive Test, Freeze-Thaw Test

References

[1] Jianxin Peng, Jianren Zhang, Cracking Risk, Durability and Life-cycle Cost for RC Bridge Subject to Carbonation-induced Corrosion, Journal of High way and Transportation Research and Development, Vol 28(2)( 2011), pp.37-44. (In Chinese).

[2] Chr. Thoft. P. Istensen. Stochastic Modelling of the Crack Initiation Time for Reinforced Concrete Structures. Philadelphia: ASCE Structures Congress. (2000).

DOI: 10.1061/40492(2000)157

[3] Mu Lu. Recent Study and Research Directions of Concrete Durability. Industrial Construction, Vol. 27( 5)( 1997), pp.1-6. (In Chinese).

[4] Hao Tian, Guoping Li, Airong Chen, Analysis of Parameter Sensitivity of Concrete Bridge Durability in Atmospheric Environment, Bridge Construction, Vol. 4. (2009). pp.24-27. (In Chinese).

[5] Xican University of Architecture and Technology. Evaluation Criteria for Durability o f Concrete Structure . Beijing : China Architecture & Building Press. ( 2007). (In Chinese).