Cold expansion: Guidance for staff with responsibility for the CX programme on track (RR-STR-95-020)

"Finally, because there will be some 10,000 miles of jointed track for many years to come, British Railways have tested a new cold expansion process for rail-end bolt-holes which induces a radial compressive stress around the circumference of the bolt-hole. This operation overcomes the disadvantages of the original way in...