Application of a modern laser technique to evaluate the performance of recycled railway ballast

The performance of railway track structure is influenced by the ballast shape properties including roundness, flatness, elongation, sphericity, angularity and surface texture. challenge how to accurately measure irregular shapes materials directly link them performance. In this paper, a modern three-dimensional laser technique was used determine freshly produced crushed recycled sampled from heavy-haul coal line in South Africa. objective investigate effect on settlement (i.e. permanent deformation). All five were scanned scanning system data collected processed reconstruct models particles. results obtained develop chart classify these physically with determined triaxial testing programme. Based test results, new empirical developed route corridor line. It anticipated that outcomes study would assist quality assessments maintenance field.