Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Evaluation of Physical Properties for 53-Years Old Railway Tunnel Linning Concrete

53년 경과된 철도터널 라이닝 콘크리트의 물성 평가

  • 이상민 (쌍용중앙연구소 선임연구원 공학박사) ;
  • 이태규 (쌍용중앙연구소) ;
  • 김동석 (쌍용중앙연구소 주 임 연구원 공학박사) ;
  • 이웅종 (쌍용중앙연구소) ;
  • 김종우 (쌍용 중앙연구소 연구원)
  • Published : 1995.04.01
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Abstract

The purpose of this study is to identify the various characteristics of the 53-years old railway tunnel linning concrete. The nondestructive technique such as the surface hardness method and the ultrasonic method, the extent of carbonation by the phenolphthalein indicator, and the chemical analysis due to XRD/XRF are considered Also the concrete core was cut in two pieces per tunnel for the exact evaluation of strength. On the basis of the experimental result, it is concluded that the durability and the serviceability of old tunnel linning concrete are affected by the initial mixing condition and the environmental effect.

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