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2026 Vol.42, Issue 2 Preview Page
Development of a Temperature-dependent Strength Enhancement Model for Thermal Stabilization of Soil Based on Laboratory Heating Tests

실내 가열시험을 통한 점토지반 소결 공법의 온도 의존 강도증진 모델 개발

Yeong-Jin Lee1
,
Young-Min Kim2
,
Kang-Il Lee3*
이 영진1
,
김 영민2
,
이 강일3*
1Member, Senior Engineer, Hyean ENG Co., Ltd.
2Member, Ph.D. Student, Dept. of Smart City and Construction Convergence Engineering, Daejin Univ.
3Member, Prof., Dept. of Smart Civil and Environmental Engineering, Daejin Univ.
1정회원, (주)혜안이앤지 선임
2정회원, 대진대학교 스마트시티건설융합공학과 박사과정
3정회원, 대진대학교 스마트건설환경공학과 교수
*Corresponding Author
30 April 2026. pp. 43-52
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Abstract

The thermal stabilization of soil is a technique that improves the strength of clayey soil through heating, providing advantages such as a shorter construction period and the elimination of additional stabilizing materials compared to conventional methods. However, the quantitative relationship between temperature distribution and strength increase has not been clearly established due to insufficient research, thus limiting its practical application in design. Therefore, the objective of this study is to develop a temperature-dependent strength enhancement model for the quantitative design of the sintering method. To this end, laboratory heating tests were conducted under various initial temperature and preconsolidation pressure conditions, and the strength increase behavior in response to temperature variations was analyzed. Based on the test results, an empirical model incorporating the temperature ratio (T/To), strength ratio (qu/quo), and preconsolidation pressure (Pc) was proposed, where the regression parameters were determined to be a = 0.025, and b = 0.75.

Keywords
Empirical model
Preconsolidation pressure
Strength
Temperature
Thermal stabilization of soil

소결공법은 점토지반 가열을 통해 강도를 증진시키는 공법으로써 기존의 개량공법에 비해 시공 기간이 짧고 별도의 재료를 필요로 하지 않는 장점을 가진다. 그러나 현재 연구 부족으로 인해 온도 분포와 강도 증가 간의 정량적 관계가 명확히 제시되지 않아 설계 적용에 한계를 가지고 있다. 이에 본 연구는 소결공법의 강도증진 효과를 정량적으로 설계하기 위한 온도 의존 강도증진 모델을 개발하는 것을 목적으로 한다. 이를 위해 본 연구에서는 초기온도 및 선행압밀하중 조건을 달리하여 실내 가열시험을 수행하였으며 온도변화에 따른 강도 증가거동을 분석하였다. 연구결과는 온도비(T/To)와 강도비(qu/quo), 선행압밀압력(Pc)을 이용한 경험적 모델을 제시하였으며 회귀변수 a는 0.025, 회귀변수 b는 0.75로 제안하였다.

References
1

Abuel-Naga, H.M., Bergado, D.T., Soralump, S., and Rujivipat, P. (2005), “Thermal Consolidation of Soft Bangkok Clay”, Lowland Technology International, Vol.7, No.1, pp.13-21.

2

Andersland, O. B. and Anderson, D. M. (1978), “Geotechnical Engineering for Cold Regions”, McGraw-Hill.

3

ASTM International (2009), “Standard Practice for Description and Identification of Soils (Visual-Manual Procedure)”, ASTM D2488-09a.

4

Beles, A.A. and Stanculescu, I.I. (1958), “Thermal Treatment as a Means of Improving the Stability of Earth Masses”, Geotechnique, Vol.8, No.4, pp.158-165, https://doi.org/10.1680/geot.1958.8.4.158.

10.1680/geot.1958.8.4.158
5

Beltrami, H., Smerdon, J.E., Pollack, H.N., and Huang, S. (2002), “Continental Heat Gain in the Global Climate System”, Geophysical Research Letters, Vol.29, No.8, pp.8.1-8.3, https://doi.org/10.1029/2001GL014310.

10.1029/2001GL014310
6

Han, H.S., Lim, E.S., Lee, G.S., and Jang, D.H. (2014), “Improvement of Soft Ground using Electric Heating Equipment”, Journal of the Korean Geoenvironmental Society, Vol.15, No.1, pp.5-12, https://doi.org/10.14481/jkges.2014.15.1.5.

10.14481/jkges.2014.15.1.5
7

Han, H. S., Lim, E. S., Park, M. C., and Kim, T. S. (2016), “Experimental Study on Heat Transfer Characteristic by Ground Heating Method”, Journal of the Korean Society of Hazard Mitigation, Vol.16, No.2, pp.331-340, https://doi.org/10.9798/KOSHAM.2016.16.2.331.

10.9798/KOSHAM.2016.16.2.331
8

Hashemi, M., Vahidi, M., and Kaviani, A. (2019), “Effect of Thermal Stabilization of Soil, Bentonite, Calcium Carbonate and Fibers on Behavior Properties of Clay Soil”, Journal of Civil Engineering and Materials Application, Vol.3, No.1, pp.55-64, https://doi.org/10.22034/jcema.2019.92028.

10.22034/jcema.2019.92028
9

Litvinov, I.M. (1960), “Stabilization of Settling and Weak Clayey Soils by Thermal Treatment”, Soil and Foundation Engineering, pp.94-112.

10

Litvinov, I.M., Rzhanitzin, B.A., and Bezruk, V.M. (1961), “Stabilization of soil for Constructional Purposes”, Proceeding of The Fifth International Conference on Soil Mechanics and Foundation Engineering, pp.775-777.

11

Lee, K.I. (2003), “Geotechnical Characteristics of Clays Reconsolidated at High Temperature”, Journal of the Korean Geotechnical Society, Vol.19, No.2, pp.7-14.

12

Lee, Y.J. (2026), Evaluation of the Bearing Capacity of Thermally Stabilized Clayey Soil Using a Heat Transfer Model, Ph.D. Dissertation, Graduate School of Daejin Universary.

13

Lee, Y.J., Lee, K.I., and Cho, T.J. (2025), “Heating-Induced Stabilization of Weak Clayey Soils: A Model Incorporating Pore Water Evaporation”, Soils and Foundations, Vol.65, Issue 1, 101576, https://doi.org/10.1016/j.sandf.2025.101576.

10.1016/j.sandf.2025.101576
14

Park, M.C., Shin, B.C., Han, H.S., and Lim, E.S. (2012), “Improvement of Shallow Soil Using Electric Heating Equipment”, Journal of the Korean Geotechnical Society, Vol.28, No.10, pp.41-54, 10.7843/kgs.2012.28.10.41.

10.7843/kgs.2012.28.10.41
15

Shin, B.C. (2011), Improvement of Shallow Soil by Electric Heating Method, Ph.D. Dissertation, Graduate School of Kumoh National Institute of Technology.

16

Yamada, G. (1962), “The Effective Range of Strengthening Soil by Thermal Treatment”, Soils and Foundations, Vol.2, Issue 2, pp.3-16, https://doi.org/10.3208/sandf1960.2.2_3.

10.3208/sandf1960.2.2_3
Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 42
  • No :2
  • Pages :43-52
  • Received Date : 2026-02-02
  • Revised Date : 2026-03-12
  • Accepted Date : 2026-03-14
  • DOI :https://doi.org/10.7843/kgs.2026.42.2.43
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