Infiltration characteristics of chemically-treated water-repellent kaolin

Youngmin Choi, Sanghyeong Lim, Tae Sup Yun, Woojin Lee, Changho Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Degree of water repellency significantly influences the infiltration behavior of water-repellent soils. In this study, the chemically treated water-repellent kaolin clays with different concentrations (CO) of an organosilane solution are examined to explore the effect of water repellency on its infiltration characteristics. Experimental results show that the soil-water contact angle tends to increase with increasing CO until CO = 5%, and then shows an almost constant value with increasing CO. The water infiltration time (WIT) results show that water infiltration resistance is significantly improved by organosilane treatment (CO ≥ 5%) under low hydrostatic pressure (WP). However, as the hydrostatic pressure increases, WIT is converged (CO = 5%) or exacerbated (CO = 10% and 20%) to the WIT of untreated clay. The different behaviors of infiltration are discussed in terms of wetting patterns. The findings can be used to improve a conventional hydraulic barrier system.

Original languageEnglish
Title of host publicationGeotechnical Special Publication
EditorsThomas L. Brandon, Richard J. Valentine
PublisherAmerican Society of Civil Engineers (ASCE)
Number of pages6
EditionGSP 280
ISBN (Electronic)9780784480434
Publication statusPublished - 2017
EventGeotechnical Frontiers 2017 - Orlando, United States
Duration: 2017 Mar 122017 Mar 15

Publication series

NameGeotechnical Special Publication
NumberGSP 280
ISSN (Print)0895-0563


ConferenceGeotechnical Frontiers 2017
Country/TerritoryUnited States

Bibliographical note

Funding Information:
This research was supported by a grant (16-RDRP-B076564-03) from the Regional Development Research Program funded by the Korean Ministry of Land, Infrastructure, and Transport and by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (NRF-2015R1A2A2A01006337).

Publisher Copyright:

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


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