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2024 Vol.25, Issue 7 Preview Page
Experimental Evaluation on JGS Frost Susceptibility Testing Method

일본 동상민감성 판정 기준에 관한 고찰

Jangguen Lee1*
,
Hyunwoo Jin2
,
Zheng Gong3
이 장근1*
,
진 현우2
,
공 정3
1Research Fellow, Department of Future & Smart Construction Engineering, Korea Institute of Civil Engineering and Building Technology (KICT), University of Science & Technology
2Senior Researcher, Department of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology (KICT)
3PhD Candidate, Korea Institute of Civil Engineering and Building Technology (KICT), University of Science & Technology
*Corresponding Author
1 July 2024. pp. 21-27
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Abstract

Frost heave, a significant engineering aspect of frozen ground, leads to various damages in Korea during the winter. Both the United States and Japan, encompassing regions with frozen ground, have actively researched frost heave and possess standardized experimental methods. Particularly, the Japanese Geotechnical Society (JGS) has introduced a frost heave standard testing method, offering the advantage of relatively simple specimen preparation and experimental procedures. However, issues persist regarding the ambiguous engineering interpretation of frost heave test results and the lack of clear criteria for frost heave susceptibility assessment. This paper presents laboratory testing results following the JGS testing method on sand and silt mixtures using a triaxial temperature- controllable cell, and thoroughly analyzes the frost heave rate calculation process. Furthermore, it evaluates the applicability of frost heave susceptibility criteria proposed in the United States to frost heave rates based on the JGS testing method.

Keywords
Frozen ground
Frost heave
Frost susceptibility criteria
Frost heave test

동상은 동토지반의 중요한 공학적 특성 중 하나로, 겨울철에 국내에서는 동상으로 인한 다양한 피해가 발생한다. 미국과 일본은 동토지역을 포함하고 있어 동상에 대한 연구가 활발히 이루어졌으며, 표준화된 실험법을 보유하고 있다. 특히, 일본 동상 실험법은 시료 준비와 실험 과정이 비교적 간단하다는 장점이 있다. 그러나 동상 실험 결과의 공학적 해석이 모호하며, 동상 민감성 판정 기준이 제시되지 않아 실제 활용에 문제가 있다. 본 논문에서는 모래-실트 혼합토를 대상으로 일본 동상 실험법에 따라 온도제어형 셀을 활용한 실내실험을 수행하고, 동상속도 산정 과정을 면밀히 분석하였다. 더불어, 일본 동상 실험법으로 산정된 동상속도가 미국에서 제시한 동상 민감성 판정 기준에 적용 가능한지 검토하였다.

키워드
동토지반
동상
동상민감성
동상민감성 판정 기준
동상 실험
References
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Information
  • Publisher :Korean Geo-Environmental Society
  • Publisher(Ko) :한국지반환경공학회
  • Journal Title :Journal of the Korean Geo-Environmental Society
  • Journal Title(Ko) :한국지반환경공학회 논문집
  • Volume : 25
  • No :7
  • Pages :21-27
  • Received Date : 2024-05-21
  • Revised Date : 2024-05-22
  • Accepted Date : 2024-03-06
  • DOI :https://doi.org/10.14481/jkges.2024.25.7.21
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