Why railway lines are made across iron sleeper or concrete sleeper
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Concrete sleepers have many advantages like longer lifespan, high stability, small maintenance, low damage rate and low scrap rate. They are widely used in high speed railway and the stability is much higher than wood sleepers. Many countries chose concrete sleepers to build high speed passenger line.
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Concrete or wooden sleepers are kept below the railway line so that the weight of passing train is spread over a large area of ground and the track may not sink into the ground.
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