Ballast drainage in Brazilian railway infrastructures

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Manuela
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Ballast drainage in Brazilian railway infrastructures

Mensagem por Manuela » 05 Set 2016, 11:45

Autores: Cassio Paiva, Mateus Ferreira, Adelino Ferreira.

Article history:
Received 2 February 2014
Received in revised form 27 March 2014
Accepted 5 June 2014
Available online xxxx.


a b s t r a c t:
The main objective of this research work was to analyze the reduction in permeability of the ballast layer
due to the presence of soil through laboratory tests. Granulometry and permeability tests were done
comparing clean ballast samples with samples contaminated with 10%, 15%, 20%, 25% and 40% volumetric
percentages of soil. The hydraulic conductivity of the ballast for different contamination rates was also
analyzed. Finally, an equation was defined that can be used to predict the hydraulic conductivity for
different ballast contamination rates.

Keywords:
Railway ballast
Drainage
Ballast contamination
Granulometry
Permeability.
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