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Journal of Central South University

, Volume 18, Issue 3, pp 881–888 | Cite as

Deterioration of concrete in railway tunnel suffering from sulfate attack

  • Guang-cheng Long (龙广成)Email author
  • You-jun Xie (谢友均)
  • De-hua Deng (邓德华)
  • Xiao-kun Li (李小坤)
Article

Abstract

For the sake of understanding the deterioration behavior of concrete in actual railway tunnel structures subjected to aggressive sulfate medium in practice, detailed field investigations and tested analysis on sprayed concrete linings of approximately 40-year-old railway tunnels in environments containing sulfate ion were carried out, respectively. The results show that the deterioration of concretes in the investigated area is serious, which involves complicated physicochemical process between the sulfate salt and concrete. Among them, the secondary sulfate minerals such as gypsum formation under very high concentration sulfate ion condition by accumulating and evaporation process dominate, followed by the crystallization of sulfate salt and formation of thaumasite.

Key words

sulfate attack concrete railway tunnel secondary sulfate minerals salt crystallization 

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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Guang-cheng Long (龙广成)
    • 1
    Email author
  • You-jun Xie (谢友均)
    • 1
  • De-hua Deng (邓德华)
    • 1
  • Xiao-kun Li (李小坤)
    • 2
  1. 1.School of Civil Engineering and ArchitectureCentral South UniversityChangshaChina
  2. 2.Kunming Railway BureauKunmingChina

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