Effect of gradation of aggregate and size of fouling materials on hydraulic conductivity of sand-fouled railway ballast

Effect of gradation of aggregate and size of fouling materials on hydraulic conductivity of... •Hydraulic conductivity of ballast was investigated by large-scale permeability test.•Permeability of ballast was compared for different initial gradations.•Effect of coarse and fine-grained sand on permeability of fouled ballast was evaluated.•Permeability of ballast was determined for both laminar and turbulent flow condition.•Power law can better characterize the water flow through clean ballast.•Nonlinear relationship is observed for water flow through fouled ballast with coarse sand. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Construction and Building Materials Elsevier

Effect of gradation of aggregate and size of fouling materials on hydraulic conductivity of sand-fouled railway ballast

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0950-0618
eISSN
1879-0526
D.O.I.
10.1016/j.conbuildmat.2018.02.040
Publisher site
See Article on Publisher Site

Abstract

•Hydraulic conductivity of ballast was investigated by large-scale permeability test.•Permeability of ballast was compared for different initial gradations.•Effect of coarse and fine-grained sand on permeability of fouled ballast was evaluated.•Permeability of ballast was determined for both laminar and turbulent flow condition.•Power law can better characterize the water flow through clean ballast.•Nonlinear relationship is observed for water flow through fouled ballast with coarse sand.

Journal

Construction and Building MaterialsElsevier

Published: Apr 10, 2018

References

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