Analysis on Wettability of Soil Composed of Sand and Fine-Grained Soil with Hydrophobic Surface

Jeong-Jun Park; Kicheol Lee; Seung-Kyong You; Jung-Mann Yun; Gigwon Hong

doi:10.12814/jkgss.2023.22.4.043

All Issue

2023 Vol.22, Issue 4 Preview Page Next Page

Research Article

Analysis on Wettability of Soil Composed of Sand and Fine-Grained Soil with Hydrophobic Surface 모래와 세립토로 구성된 소수성 흙의 습윤성 분석

31 December 2023. pp. 43-49

PDF XML

Abstract

This study described the test results to evaluate the effect of fines content on the wettability of sandy soil composed of hydrophobic soil particles. Wettability was evaluated using the contact angle obtained from the water drop test results for Jumunjin standard sand and sandy soil containing fines content. The test results showed that the wettability of sandy soil composed of sand and fine-grained soil changed depending on the hydrophobic level and fines content. The influence of fines content on the wettability of sandy soil was analyzed. It was found that 1% and 3% hydrophobic sandy soil with 5% fines content decreased by 94.4% and 32.4%, respectively, compared to the contact angle of standard sand. In addition, the contact angle reduction ratio for sandy soil with a 5% hydrophobic level and a fines content of 5% and 10% were 24.4% and 37.3%, respectively. In other words, the wettability of the soils should be evaluated considering the fines content to predict the behavior of contaminants, because the fines content has a significant impact on the value and increase/decrease ratio of the contact angle of sandy soil.

Keywords

Fines content

Particle surface

Hydrophobic

Hydrophilic

Wettability

본 연구에서는 흙 입자 표면이 소수성으로 구현된 사질토에 대하여 세립분 함유율이 사질토의 습윤성에 미치는 영향을 평가하기 위한 시험을 수행하였다. 습윤성은 주문진 표준사와 세립토가 함유된 사질토에 대하여 물방울 시험 결과로부터 얻은 접촉각으로 평가하였다. 시험 결과, 모래와 세립토로 구성된 사질토의 습윤성은 소수성 수준과 세립토 함유율 조건에 따라 변화하였다. 세립토 함유율이 사질토의 습윤성에 미치는 영향을 평가한 결과, 5% 세립토 함유율 조건에 있어서 소수성 수준이 1%와 3%인 사질토의 접촉각은 표준사의 접촉각에 비하여 각각 94.4%, 32.4%가 감소하였다. 그리고, 소수성 수준이 5%인 경우, 5%와 10%의 세립토 함유율 조건에 대한 접촉각 감소율은 각각 24.4%와 37.3%였다. 즉, 세립토 함유율은 사질토 접촉각의 크기 및 증감율에 큰 영향을 미치기 때문에, 오염물 거동 예측에 있어서 지반의 세립토 함유율에 따른 습윤성 평가가 수반되어야 한다.

References

Abel, S., Peters, A., Trinks, S., Schonsky, H., Facklam, M. and Wessolek, G. (2013), "Impact of biochar and hydrochar addition on water retention and water repellency of sandy soil", Geoderma, Vol.202-203, pp.183-191. 10.1016/j.geoderma.2013.03.003

Adamczuk, A., Gryta, A., Skic, K., Boguta, P. and Jozefaciuk, G. (2022), "Effect of Different Minerals on Water Stability and Wettability of Soil Silt Aggregates", Materials, Vol.15, No.16, p.5569. 10.3390/ma1516556936013705PMC9413417

Bachmann, J. and McHale, G. (2009), "Superhydrophobic surfaces: a model approach to predict contact angle and surface energy of soil particles", European Journal of Soil Science, Vol.60, No.3, pp.420-430. 10.1111/j.1365-2389.2008.01118.x

de Jesus Duarte, S., Hubach, A. and Glaser, B. (2022), "Soil water balance and wettability methods in soil treated with biochar and/or compost", Carbon Research, Vol.1, p.31. 10.1007/s44246-022-00032-2

Doshi, B., Sillanpää, M., and Kalliola, S. (2018), "A review of bio-based materials for oil spill treatment", Water Research, Vol.135, No.15, pp.262-277. 10.1016/j.watres.2018.02.03429477791

Goebel, M. O., Bachmann, J., Woche, S. K. and Fischer W. R. (2005), "Soil wettability, aggregate stability, and the decomposition of soil organic matter", Geoderma, Vol.128, No.1-2, pp.80-93. 10.1016/j.geoderma.2004.12.016

Han, J. G., Kim, D. C. and Hong, K. (2015), "The Effects of pH on Microfluidics Flow Characteristics of Heavy Metals", Journal of Korean Geosynthetics Society, Vol.14, No.1, pp.23-32. 10.12814/jkgss.2015.14.1.023

Kim, J. H., Hong, G. and Park, J. J. (2022), "Effect of Surface Condition of Soil Particles According to Water Content on Spectral Information of Soils", 2022 KOSDI conference.

Lourenço, S. D. N., Saulick, Y., Zheng, S., Kang, H., Liu, D., Lin, H. and Yao, T. (2018), "Soil wettability in ground engineering: fundamentals, methods, and applications", Acta Geotechnica, Vol.13, pp.1-14. 10.1007/s11440-017-0570-0

Méndez, E., Perez, M., Romero, O., Beltran, E. D., Castro, S., Corona, J. L., Corona, A., Cuevas, M. C. and Bustos, E. (2012), "Effects of electrode material on the efficiency of hydrocarbon removal by an electrokinetic remediation process" Electrochimica Acta, Vol.86, pp.148-156. 10.1016/j.electacta.2012.04.042

Park, J. J. and Kim, S. H. (2018), "Field investigation for identification of contamination sources in petroleumcontaminated site", Journal of the Society of Disaster Information, Vol.14, No.2, pp.141-153.

Park, J. J., You, S. K., Lee, K. W., Yun, J. M. and Hong, G. (2022), "Effect of Hydrophobic Condition and Water Content on the Spectral Information of Soil Particle Surface", Journal of the Korean Geosynthetics Society, Vol.21, No.4, pp.93-100.

Shackelford, C. D., Meier, A. and Sample-Lord, K. (2016), "Limiting membrane and diffusion behavior of a geosynthetic clay liner", Geotextiles and Geomembranes, Vol.44, No.5, pp.707-718. 10.1016/j.geotexmem.2016.05.009

Information

Publisher :Korean Geosythetics Society
Publisher(Ko) :한국지반신소재학회
Journal Title :Journal of the Korean Geosynthetics Society
Journal Title(Ko) :한국지반신소재학회 논문집
Volume : 22
No :4
Pages :43-49
Received Date : 2023-12-12
Revised Date : 2023-12-15
Accepted Date : 2023-12-18
DOI :https://doi.org/10.12814/jkgss.2023.22.4.043

Journal of the Korean Geosynthetics Society ISSN:2508-2876(Print) 2287-9528(Online) 한국지반신소재학회 논문집

All Issue