Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 1995.04a
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- Pages.360-365
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- 1995
Evaluation of Physical Properties for 53-Years Old Railway Tunnel Linning Concrete
53년 경과된 철도터널 라이닝 콘크리트의 물성 평가
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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