Applications rail track construction

Though economical, the use of an uncrushed stone layer can cause a decrease in the stability and the holding capacity of crushed granular cover. To circumvent this, a geogrid reinforcement is incorporated within the construction. However, further problems can stiU arise with the longer-term stability of the railway track. 

37 (a) Loading profile and (b) line depression of rail sleeper. 

For example, the ingress of a rising water table can be restricted by a cross-slope drainage geocomposite with a GCL layer or geomembrane placed above to act as a capillary break in the water flow. A second drainage geocomposite above the impermeable layer would then remove surface 

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