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Geomechanics and Engineering
  Volume 41, Number 2, April25 2025 (Special Issue) pages 233-241
DOI: https://doi.org/10.12989/gae.2025.41.2.233
 

 open access

Applicability to engineered slopes of water repellent soils using laboratory model tests
Byeong-Su Kim and Shoji Kato

 
Abstract
    In recent years, ground disasters such as the collapse of unsaturated river levees have frequently occurred due to the seepage and erosion of rainwater during heavy rain. Applying water repellent soil to engineered slopes can be one of the solutions to prevent rainwater infiltration. For this, previous studies have verified the effects of rainfall intensity, layer thickness, and grain size distribution of geomaterials through water infiltration head (WIH) tests. In this study, to objectively verify the applicability of the impermeable layer of hydrophobic materials to field slopes, a series of laboratory embankment model tests were conducted on these three influences. Like the trend of the results of the previous WIH test, the water-shielding performance of the hydrophobic geomaterial could be determined through the results obtained from the model tests. As a result, it can be said that the application of hydrophobic geomaterials to engineered slopes could be a good alternative to maintain slope stability against rainwater infiltration.
 
Key Words
    hydrophobic material; laboratory embankment model test; rainwater infiltration; water infiltration test
 
Address
Byeong-Su Kim: Department of Civil & Environmental Engineering, Dankook University,
152, Jukjeon-ro, Suji-gu, Yongin City, Gyeonggi-do 16890, Korea
Shoji Kato: Graduate School of Engineering, Kobe University,
Rokkodai-cho, Nada-ku, Kobe City, Hyogo 657-8501, Japan
 

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