Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 2005.11a
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- Pages.347-350
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- 2005
The Application of Hydration Heat to Form Removal of Lining Concrete in Tunnel
수화열을 고려한 터널 라이닝 콘크리트 거푸집 탈형
Abstract
The strength level for removal of lining concrete in tunnel is increased from 2.94MPa to 4.9MPa in 2004. This result in the increase of concrete curing time, and construction time would be delayed. In this study, in order to improve the efficiency of construction cycle and satisfy the strength criterion, a curing method is adopted, which is considering the hydration heat in the lining concrete member. As a result, it is shown that the concrete curing time for form removal is about 20hrs without the adjustment of concrete mix design. And construction cycle time is not changed compared to that before the change of strength criterion.
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