TY - JOUR
T1 - Evaluation of durability performance for maintenance of tunnel structures due to repeated freezing and thawing
AU - An, Jai Wook
AU - Moon, Joon Shik
AU - Kim, Hong Kyoon
N1 - Publisher Copyright:
© 2024 Techno-Press, Ltd.
PY - 2024/9/25
Y1 - 2024/9/25
N2 - In this paper, the quantitative evaluation method is presented for the durability performance of mountain tunnel concrete linings experiencing freezing and thawing during winter season. To analyze the freeze-thaw characteristics of lining, the freezing time of the concrete lining was measured by the outside temperature. The heat flow analysis was conducted based on the freezing time measured through the indoor experiment, and based on this, the energy required to freeze the concrete lining by the temperature of the outside air could be analyzed. In addition, the temperature change during the winter season was measured through an instrument installed on the actual tunnel concrete lining, and based on the results of indoor and field experiments, criteria for freeze-thaw environment evaluation and progress evaluation were prepared. Also, an equation using the freezing index was proposed through regression analysis.
AB - In this paper, the quantitative evaluation method is presented for the durability performance of mountain tunnel concrete linings experiencing freezing and thawing during winter season. To analyze the freeze-thaw characteristics of lining, the freezing time of the concrete lining was measured by the outside temperature. The heat flow analysis was conducted based on the freezing time measured through the indoor experiment, and based on this, the energy required to freeze the concrete lining by the temperature of the outside air could be analyzed. In addition, the temperature change during the winter season was measured through an instrument installed on the actual tunnel concrete lining, and based on the results of indoor and field experiments, criteria for freeze-thaw environment evaluation and progress evaluation were prepared. Also, an equation using the freezing index was proposed through regression analysis.
KW - criteria development
KW - durability performance
KW - freeze-thaw characteristics
KW - Heat flow analysis
KW - quantitative evaluation method
UR - http://www.scopus.com/inward/record.url?scp=85204190526&partnerID=8YFLogxK
U2 - 10.12989/gae.2024.38.6.593
DO - 10.12989/gae.2024.38.6.593
M3 - Article
AN - SCOPUS:85204190526
SN - 2005-307X
VL - 38
SP - 593
EP - 601
JO - Geomechanics and Engineering
JF - Geomechanics and Engineering
IS - 6
ER -