Ballast & Sub-Ballast

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Pressure Resistance ASTM 370

Moistureconditions	Uniaxial Compressive Strength Psi	Uniaxial Compressive Strength mpa	Highmm	Diametermm	Sample No
Dry	24530.11	169.13	140.8	54.4	No 1
Saturation	23598.97	162.71	147.3	54.3	No 2

(According to customer requests)

Some of the important functions of railway ballast are:

checked 3 To provide firm and level bed for the sleepers to rest on

checked 3 To allow for maintaining correct track level without disturbing the rail road bed

checked 3 To drain off the water quickly and to keep the sleepers in dry conditions

checked 3 To discourage the growth of vegetation

checked 3 To protect the surface of formation and to form an elastic bed

checked 3 To hold the sleepers in position during the passage of trains

checked 3 To transmit and distribute the loads from the sleepers to the formation

checked 3 To provide lateral stability to the track as a whole