TY - GEN
T1 - Infiltration characteristics of chemically-treated water-repellent kaolin
AU - Choi, Youngmin
AU - Lim, Sanghyeong
AU - Yun, Tae Sup
AU - Lee, Woojin
AU - Lee, Changho
N1 - 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:
© ASCE.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85018753488&partnerID=8YFLogxK
U2 - 10.1061/9780784480472.077
DO - 10.1061/9780784480472.077
M3 - Conference contribution
AN - SCOPUS:85018753488
T3 - Geotechnical Special Publication
SP - 730
EP - 735
BT - Geotechnical Special Publication
A2 - Brandon, Thomas L.
A2 - Valentine, Richard J.
PB - American Society of Civil Engineers (ASCE)
T2 - Geotechnical Frontiers 2017
Y2 - 12 March 2017 through 15 March 2017
ER -