Development of a Large-Scale Infiltration Column for Studying the Hydraulic Conductivity of Unsaturated Fouled Ballast
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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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01496115
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Supplemental Notes:
- Abstract reprinted with permission from ASTM International
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Authors:
- Duong, T V
- Trinh, V N
- Cui, Y J
- Tang, A M
- Calon, N
- Publication Date: 2013-1
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 54-63
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Serial:
- Geotechnical Testing Journal
- Volume: 36
- Issue Number: 1
- Publisher: ASTM International
- ISSN: 0149-6115
- EISSN: 1945-7545
- Serial URL: https://www.astm.org/products-services/standards-and-publications/geotechnical-testing-journal.html
Subject/Index Terms
- TRT Terms: Ballast (Railroads); Infiltration; Moisture content; Permeability coefficient; Tensiometers
- Subject Areas: Geotechnology; Railroads; I42: Soil Mechanics;
Filing Info
- Accession Number: 01484474
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 20 2013 10:59AM