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2025 Vol.24, Issue 1 Preview Page

Research Article

Experimental Study on the Permeability Evaluation of Sandy Soil According to Surface Characteristics of Soil Particles

흙 입자의 표면 특성에 따른 사질토의 투수성 평가에 관한 실험적 연구

Jeongjun Park1
,
Kyungju Lee2
,
Kicheol Lee3
,
Gigwon Hong4*
박 정준1
,
이 경주2
,
이 기철3
,
홍 기권4*
1Member, Principal Researcher, Incheon Disaster Prevention Research Center, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
2Student Member, Undergraduate Student, Dept. of Urban Infra Engineering, Halla University, 28 Halladae-gil, Wonju-si, Gangwon-do 26404, Republic of Korea
3Member, Manager, Company-Affiliated Research Institute, Korea Infrastructure Safety Research Institute, 58 Wangsimni-ro, Seongdong-gu, Seoul 04778, Republic of Korea
4Member, Assistant Professor, Dept. of Civil Engineering, Halla University, 28 Halladae-gil, Wonju-si, Gangwon-do 26404, Republic of Korea
*Corresponding Author
30 March 2025. pp. 51-57
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Abstract

This study describes the results of model experiments to evaluate the effect of soil particle surface characteristics on the permeability of sandy soil. The experiment results showed that the permeability coefficient of standard sand was very sensitive to changes in permeability coefficient even when the soil particle surface had slightly hydrophobic characteristics, whereas in the case of sandy soil containing fine-grained soil, the decrease rate of permeability coefficient was evaluated to increase significantly when the soil particle surface had a certain level of hydrophobic characteristics. Regardless of whether fine-grained soil was included, the permeability coefficient decreased as the contact angle of the soil particle surface increased, but the decrease rate of permeability coefficient also increased only when the contact angle of standard sand increased significantly. However, in sandy soil containing fine-grained soil, the contact angle and decrease rate of permeability coefficient increased only when a high level of hydrophobicity was present.

Keywords
Soil particle
Fines content
Surface
Hydrophobic
Hydrophilic
Permeability

본 연구에서는 흙 입자의 표면 특성이 사질토의 투수성에 미치는 영향을 평가하기 위한 모형실험을 수행하였다. 실험 결과, 세립토가 함유되지 않은 표준사 지반의 투수계수는 흙 입자 표면이 약간의 소수성 특성에도 투수계수의 변화에 매우 민감하게 작용하는 반면에, 세립토가 함유된 사질토의 경우에는 일정 수준 이상의 소수성 특성을 보유한 경우에 투수계수의 감소율이 크게 증가하는 것으로 평가되었다. 세립토의 함유 여부와 관계없이 흙 입자 표면의 접촉각이 증가할수록 투수계수는 감소하였지만, 표준사의 접촉각이 매우 크게 증가하는 경우에만 투수계수 감소율도 증가하였다. 그러나 세립토가 함유된 사질토는 높은 소수성 수준이 나타나야 접촉각 및 투수계수 감소율이 증가하는 것으로 평가되었다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 24
  • No :1
  • Pages :51-57
  • Received Date : 2025-02-19
  • Revised Date : 2025-02-27
  • Accepted Date : 2025-02-27
  • DOI :https://doi.org/10.12814/jkgss.2025.24.1.051
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