Development of a large-scale infiltration column for studying the hydraulic conductivity of unsaturated fouled ballast - École des Ponts ParisTech Access content directly
Journal Articles Geotechnical Testing Journal Year : 2013

Development of a large-scale infiltration column for studying the hydraulic conductivity of unsaturated fouled ballast

Trong Vinh Duong
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Viet-Nam Trinh
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Yu-Jun Cui
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Anh Minh A.M. Tang
Nicolas Calon
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Abstract

To study the hydraulic behavior of fouled ballast, an infiltration column 600 mm high and 300 mm in diameter was developed. Five time domain reflectometer (TDR) sensors and five tensiometers were installed at various levels, allowing the measurement of volumetric water content and matric suction, respectively. The material studied was fouled ballast that was formed in the railway track-bed by penetration of fine-grained soil into the ballast. This material is characterized by a high contrast of size between the largest and the smallest particles. During the test, three stages were followed: saturation, drainage, and evaporation. Based on the test results, the water-retention curve and the unsaturated hydraulic conductivity were determined. The quality of the results shows the capacity of this large-scale infiltration column in studying the unsaturated hydraulic properties of such fouled ballast.
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Dates and versions

hal-00926842 , version 1 (25-04-2018)

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Trong Vinh Duong, Viet-Nam Trinh, Yu-Jun Cui, Anh Minh A.M. Tang, Nicolas Calon. Development of a large-scale infiltration column for studying the hydraulic conductivity of unsaturated fouled ballast. Geotechnical Testing Journal, 2013, 36 (1), pp.54-63. ⟨10.1520/GTJ20120099⟩. ⟨hal-00926842⟩
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