What are main differences between ballasted track and ballastless track?

What are main differences between ballasted track and ballastless track?

Non-ballasted track, also called ballastless track, is the railway track whose bed is composed of concrete and bituminous mixture, etc. Generally, non-ballasted track is made up of steel rail, railway fasteners and slab. Non-ballasted track’s railway sleeper is formed by concrete casting.

What is ballasted track?

Track ballast forms the trackbed upon which railroad ties (sleepers) are laid. It is packed between, below, and around the ties. It is used to bear the load from the railroad ties, to facilitate drainage of water, and also to keep down vegetation that might interfere with the track structure.

Why do we use ballast in railway track?

What is the advantage of ballasted bridges?

PROS: The resilience provided by the ballast, the possibility of track realignment, effective drainage and low initial construction cost are all attractive features of ballasted systems.

What is direct fixation track?

Direct Fixation Track means a ballastless track structure in which the Track is mounted on direct fixation fasteners that in turn are anchored to an underlying concrete slab.

What is a ballast slab?

Expressed simply, ballasted track comprises rail fixed to sleepers supported by crushed stone. Slab track (of which there is a growing number of variants) has rails on resilient pads supported by a concrete base. Both have their proponents.

What is the function of ballast?

Functions of Ballast It provides levelled bed or support for the railway sleepers. It transfers the load from sleepers to subgrade and distributes the load uniformly on subgrade. It holds the sleepers in a firm position while the trains pass by. It prevents the longitudinal and lateral movement of sleepers.

What are the different types of rails?

There are three types of rails: Double-headed rails….

• Double-Headed rails. These rails were used in the early stages of railroad development.
• Bull-Headed rails.
• Flat-footed rails.

What is ballast and its function?

Functions of Ballast It provides levelled bed or support for the railway sleepers. It transfers the load from sleepers to subgrade and distributes the load uniformly on subgrade. It holds the sleepers in a firm position while the trains pass by.

What are the two functions of ballast?

Functions of Ballast

• To provide firm and level bed for the sleepers to rest on.
• To allow for maintaining correct track level without disturbing the rail road bed.
• To drain off the water quickly and to keep the sleepers in dry conditions.
• To discourage the growth of vegetation.

What is BLT in railway?

BALOTRA JN (BLT) Railway Station Balotra Jn Railway station is situated in Balotra, Rajasthan. Station code of Balotra Jn is BLT.

What is railway track slab?

A ballastless track or slab track is a type of railway track infrastructure in which the traditional elastic combination of ties/sleepers and ballast is replaced by a rigid construction of concrete or asphalt.