Table shows the average hydraulic conductivity values of the ballast

Table 5.
Percentage of material passing RG7112 sieves.Sieve size (mm)Percentage of material passing the sieve (%)Ballast with 10% of soilBallast with 15% of soilBallast with 20% of soilBallast with 25% of soilBallast with 40% of soil0.075781114190.158101315201.1810121619254.7610121620266.71012162026191417202330Full-size tableTable optionsView in workspaceDownload as CSV
Table 6.
Contamination level according to the fouling index [7].Ballast contamination rate (%)F1 (%)Classification1017Moderately clean ballast1520Moderately clean ballast2027Contaminated ballast2534Contaminated ballast4045Highly contaminated ballastFull-size tableTable optionsView in workspaceDownload as CSV
Table 7.
Contamination level according to the index of the South-African Railway Spoornet [9].Ballast contamination rate (%)Fv (%)Conclusion1058It is fontanels not necessary to clean the ballast1570It is not necessary to clean the ballast2089It is necessary to clean the ballast25106It is necessary to clean the ballast40139It is necessary to clean the ballastFull-size tableTable optionsView in workspaceDownload as CSV