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 language | English |
|---|---|
| Pages (from-to) | 593-601 |
| Number of pages | 9 |
| Journal | Geomechanics and Engineering |
| Volume | 38 |
| Issue number | 6 |
| DOIs | |
| State | Published - 25 Sep 2024 |
Keywords
- criteria development
- durability performance
- freeze-thaw characteristics
- Heat flow analysis
- quantitative evaluation method
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