Infiltration characteristics of chemically-treated water-repellent kaolin

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

doi:10.1061/9780784480472.077

Infiltration characteristics of chemically-treated water-repellent kaolin

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

Department of Civil and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 (C_O) 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 C_O until C_O = 5%, and then shows an almost constant value with increasing C_O. 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 (C_O = 5%) or exacerbated (C_O = 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
Title of host publication	Geotechnical Special Publication
Editors	Thomas L. Brandon, Richard J. Valentine
Publisher	American Society of Civil Engineers (ASCE)
Pages	730-735
Number of pages	6
Edition	GSP 280
ISBN (Electronic)	9780784480472
DOIs	https://doi.org/10.1061/9780784480472.077
Publication status	Published - 2017
Event	Geotechnical Frontiers 2017 - Orlando, United States Duration: 2017 Mar 12 → 2017 Mar 15

Publication series

Name	Geotechnical Special Publication
Number	GSP 280
Volume	0
ISSN (Print)	0895-0563

Other

Other	Geotechnical Frontiers 2017
Country/Territory	United States
City	Orlando
Period	17/3/12 → 17/3/15

Bibliographical note

Publisher Copyright:
© ASCE.

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1061/9780784480472.077

Cite this

Choi, Y., Lim, S., Yun, T. S., Lee, W., & Lee, C. (2017). Infiltration characteristics of chemically-treated water-repellent kaolin. In T. L. Brandon, & R. J. Valentine (Eds.), Geotechnical Special Publication (GSP 280 ed., pp. 730-735). (Geotechnical Special Publication; Vol. 0, No. GSP 280). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784480472.077

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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.",

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Choi, Y, Lim, S, Yun, TS, Lee, W & Lee, C 2017, Infiltration characteristics of chemically-treated water-repellent kaolin. in TL Brandon & RJ Valentine (eds), Geotechnical Special Publication. GSP 280 edn, Geotechnical Special Publication, no. GSP 280, vol. 0, American Society of Civil Engineers (ASCE), pp. 730-735, Geotechnical Frontiers 2017, Orlando, United States, 17/3/12. https://doi.org/10.1061/9780784480472.077

Infiltration characteristics of chemically-treated water-repellent kaolin. / Choi, Youngmin; Lim, Sanghyeong; Yun, Tae Sup et al.
Geotechnical Special Publication. ed. / Thomas L. Brandon; Richard J. Valentine. GSP 280. ed. American Society of Civil Engineers (ASCE), 2017. p. 730-735 (Geotechnical Special Publication; Vol. 0, No. GSP 280).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Infiltration characteristics of chemically-treated water-repellent kaolin

Abstract

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