Evaluation of durability performance for maintenance of tunnel structures due to repeated freezing and thawing

Jai Wook An, Joon Shik Moon, Hong Kyoon Kim

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)593-601
Number of pages9
JournalGeomechanics and Engineering
Volume38
Issue number6
DOIs
StatePublished - 25 Sep 2024

Keywords

  • criteria development
  • durability performance
  • freeze-thaw characteristics
  • Heat flow analysis
  • quantitative evaluation method

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