Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (2): 125-130.

• Materials Science & Technology • Previous Articles    

Simulated Study on Corrosion Resistance of Guangzhou Metro Engineering Concrete

Huang Wen-xin  Yin Su-hong  Liu Hang Wei  Jiang-xiong  Wen Zi-yun   

  1. School of Materials Science and Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong, China
  • Received:2006-04-24 Online:2007-02-25 Published:2007-02-25
  • Contact: 黄文新(1969-)，男，博士生，高级工程师，主要从事地铁泪凝土材料研究. E-mail:huangwenxin1@ gzmtr.com
  • About author:黄文新(1969-)，男，博士生，高级工程师，主要从事地铁泪凝土材料研究.
  • Supported by:

    广州市建设科技发展基金项目(200604) ;广州市地下铁道总公司科研项目(2005TJ07)

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Abstract:

The cOITosion resistance of Guangzhou Metro engineering concrete to groundwater was investigated bysimulated and accelerated corrosion tests. In the investigation , the specific specimen similar to the one in actual use was cured in the simulated groundwater solution with chlorine and sulfate ions at 20 ℃. The results show that (1) the ratio of the cured specimen to the standard specimen in compressive strength continuously decreases with the in-crease in curing time; (2) the Cl - content of the cured specimen is close to the criterion limit after 40 days; and (3) temperature rising and alternative wetting/ drying may affect the compressive strength and corrosion resistance of concrete in varying degrees.

Key words: metro engineering concrete, coηosion resistance, simulated groundwater effect, accelerated corrosion