Abstract
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 language | English |
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Pages (from-to) | 730-735 |
Number of pages | 6 |
Journal | Geotechnical Special Publication |
Issue number | GSP 280 |
DOIs | |
Publication status | Published - 2017 |
ASJC Scopus subject areas
- Architecture
- Civil and Structural Engineering
- Building and Construction
- Geotechnical Engineering and Engineering Geology