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Ballastless Track Slab
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Ballastless Track Slab is an important part of newly track structure---Ballastless Track, which is precast by prestressed reinforced concrete structure within factories, to be classified into CRTS I, CRTS II, CRTS III track slab and double-block CRTS I and CRTS II track slab, applies to high speed railway, intercity high speed railway and city subway and so on.
Sketch Map of CRTS III Track Slab
Track Slab Types
| Type | Double block | Plate | |||
|
CRTS I type double block |
CRTS II type double block |
CRTS I type plate | CRTS II type plate | CRTS III type plate | |
| Shape | -- | Flat frame board |
Standard board / Special board / Compensation board |
Standard board | |
| Prestressed construction method | No | Post-tensioning | Preemptive method |
Post-tensioning Preemptive method |
|
| Whether to polish | No | No | Yes | No | |
| Track pad | No | CA mortar | CA mortar | Self-compacting concrete | |
| Track limit mode | Pedestal | Convex block | Longitudinal reinforcement | U-shaped steel bar connected to the base | |
| Track construction method | Tool rail method | Mechanical vibration embedding | -- | -- | -- |
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