Construction potential of recycled railway ballast based on large scale triaxial tests

The findings of a series of monotonic and cyclic triaxial compression tests conducted at low confining pressures were used to predict the shear strength and deformation and degradation characteristics of recycled railway ballast. The effect of particle size distribution, shape and maximum principal stress ratio on the deformation and degradation behaviour of recycled material was studied. It was observed that if the unwanted fines were removed, the recycled aggregates exhibited quite acceptable mechanical properties when compared with fresh ballast. By using recycled ballast for the construction of railway tracks it might be possible to minimize the maintenance cost. However, it is necessary to establish the behaviour of the recycled ballast under similar loading conditions as those encountered in the track. In order to perform cyclic triaxial tests on fresh and recycled ballast, a new testing device was utilized which, enables simulation of the field load and boundary conditions. Based on the findings of this test program the construction potential of recycled railway ballast is discussed as a possible way towards cost reduction of railway track maintenance.

Media Info

  • Pagination: 11p.
  • Monograph Title: New horizons for rail: CORE 2004: conference on railway engineering, June 20-23 2004, Darwin, Northern Territory, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01517215
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Mar 4 2014 8:13PM