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http://dx.doi.org/10.14481/jkges.2019.20.1.67

Experimental Assessment and Specimen Height Effect in Frost Heave Testing Apparatus  

Jin, Hyunwoo (Department of Smart City & Construction Engineering, Korea University of Science & Technology)
Ryu, Byunghyun (Future Technology and Convergence Research, Korea Institute of Civil Engineering and Building Technology)
Lee, Jangguen (Future Technology and Convergence Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korean GEO-environmental Society / v.20, no.1, 2019 , pp. 67-74 More about this Journal
Abstract
Frost heave is one of the representative engineering characteristics in cold regions. In South Korea, which is located in seasonal frost area, structural damage caused by frost heave and thaw happens and the need for research on the frost heave is increasing. In this paper, newly developed transparent temperature-controllable cell is used to focus on the frost heave. Frost susceptible artificial soil is used to analyze water intake rate which is one of the important factors in frost susceptibility criteria. Frost heave rate and water intake rate have similar behavior after heave by freezing of pore water converges. O-ring installed in the upper pedestal to measure water intake rate generates side friction between the inner wall of the freezing cell and O-ring, thereby hindering frost heave. Therefore, the frost susceptibility criteria using the water intake rate is not reliable. It is appropriate to use frost heave rate which has similar behavior with water intake rate. Frost heave tests were performed under two different specimen heights. Overburden pressure, temperature gradient and dry unit weight were set under similar state. Based on laboratory testing results, frost heave is independent on the specimen height.
Keywords
Frost heave; Frost susceptibility; Transparent temperature-controllable cell; Frost heave rate; Specimen height;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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