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http://dx.doi.org/10.7843/kgs.2012.28.3.5

Freezing and Bearing Capacity Characteristics of Road Foundations under Temperature Condition  

Shin, Eun-Chul (Dept. of Civil & Environmental Engrg., Univ. of Incheon)
Kim, Sung-Hwan (Dept. of Civil & Environmental Engrg., Univ. of Incheon, Jangwon Engrg. Co., Ltd.)
Park, Jeong-Jun (Dept. of Civil & Environmental Engrg., Univ. of Incheon)
Publication Information
Journal of the Korean Geotechnical Society / v.28, no.3, 2012 , pp. 5-14 More about this Journal
Abstract
In the current design codes for anti-freezing layer, the thickness of anti-freezing layer is calculated by freezing depth against the temperature condition. Therefore, they have a tendency of over-design and uniform thickness without the considerations of thermal stability, bearing capacity and frost susceptibility of materials. So, it is essential for studying the appropriateness and bearing capacity of road foundation materials as well as their seasonal and mechanical properties to take an appropriate and reasonable design of the road structure system. In this paper, the freezing and bearing capacity characteristics of typical road foundation materials were evaluated in the large scale laboratory test. LFWD (light falling weight deflectometer) was used to determine the change of elastic modulus ($E_{LFWD}$) caused by to the frost heave and thaw. Furthermore, the influence of crushed natural aggregate on the freezing of the subgrade soil was studied to verify the function and effectiveness of the anti-freezing layer.
Keywords
Anti-freezing layer; Bearing capacity; Frost heave; Large scale laboratory test; LFWD; Road foundation;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 남영국, 조규태, 진정훈 (2002), 도로포장의 동상방지층 실효성 검증을 위한 현장계측 및 실내시험 연구, 대한토목학회 논문집, 제22권 제5D호, pp.913-921.
2 신은철, 박정준 (2003), 동결토의 동상팽창압 특성에 관한 실험적 연구, 한국지반공학회논문집, 제19권 제2호, pp.65-74.
3 신은철, 류병현, 박정준 (2010), 실내동결시스템을 이용한 노상토의 동상 특성, 한국도로학회논문집, 제12권 제2호, pp.71-79.
4 최준성, 김종민, 한진석, 김부일 (2009), 노상 및 보조기층의 소형 충격재하시험 활용방안 연구, 한국도로학회논문집, 제11권 제2호, pp.85-98.
5 Akagawa, S. (1983), Relation between frost heave and specimen length, Shimizu Tech. Res. Bull., 4:1-7
6 Akagawa, S., Yamamoto, Y., and Hashimoto, S. (1985), Frost heave characteristics and scale effect of stationary frost heave. Proc. of 4th Inter. Symp. On Ground Freezing, pp.137-143.
7 김영진, 강병희 (1998), 폐타이어를 이용한 지반동상방지, 한국지반공학회지, 제14권 제1호, pp.49-58.
8 Gilpin R. R. (1982), A frost heave interface condition for use in numerical modeling, Proc. of 4th Canadian permafrost Conf., The Roger J.E. Brown Memorial Volume.
9 국토해양부 (2010), 도로설계편람.
10 권기철 (2002), 노상토의 종류에 따른 동결.융해 특성, 한국도로포장공학회지, 제4권 제1호, pp.33-39.
11 Goto, S. and Takahashi, Y. (1982), Frost heave characteristics of soil under extremely low frost penetration rate, Proc. of 3rd Inter. Symp. On Ground Freezing, pp.261-268.
12 Konrad, J. M. and Mogenstern, N. R. (1982), Prediction of frost heaving in the laboratory during transient freezing, Canadan Geotech. J., Vol.19, pp.250-259.   DOI
13 Miller, R. D., Baker, J. H. and Kolaian, J. H. (1960), Particle size, overburden pressure, pore water pressure and freezing temperature of ice lenses in soil, Transactions International Congress Soil science, pp.122-128.
14 Ohrai, T. (1986), Experimental studies on the effects of ice and unfrozen water on the compressive strength of frozen soil, Ph.D. dissertation, Hokkaido University, Sapporo, Japan.
15 Simonsen, E. and Isacsson, U. (1999), Thaw weakening of pavement structures in cold regions, Cold Regions Science and Technology, 29, pp.135-151.   DOI   ScienceOn
16 Takagi, S. (1980). The adsorption force theory of frost heaving, Cold Region Science Technology 3, pp.57-81.   DOI   ScienceOn
17 Takashi, H., Yamamoto, Y., Ohrai, T., and Masuda, M. (1978), Effect of penetration rate of freezing and confining stress on the frost heave ratio of soil, Proc. of 3rd Inter. Conf. On Permafrost, 1:pp. 37-742.