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Performance of geosynthetically-reinforced rail ballast in direct shear conditions

Conference Paper


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Abstract


  • In the recent past the use of geosynthetic-reinforcement to stabilise the rail tracks has been on the

    rise. The performance of such reinforced track is governed by the shear behavior of the ballastgeosynthetic

    interface. In view of this, large-scale direct shear tests were performed to explore the

    shear behaviour of rail ballast-geogrid interfaces. Fresh Latite ballast with an average particle size

    (D50) of 35 mm, and geogrids with different aperture sizes and shapes were used for this purpose.

    The laboratory experimental results indicate that the shear strength of ballast can be improved

    significantly when reinforced with geosynthetics, but the degree of effectiveness depends on the

    aperture to particle size ratios. It is expected that this study will assist rail engineers in selecting

    suitable geosynthetics for stabilising a given ballast gradation, to reduce track maintenance costs.

UOW Authors


  •   Syed, Khaja (external author)
  •   Indraratna, Buddhima (external author)
  •   Jayan Sylaja, Vinod

Publication Date


  • 2012

Citation


  • Hussaini, S. K Karimullah., Indraratna, B. & Vinod, J. J S. (2012). Performance of geosynthetically-reinforced rail ballast in direct shear conditions. In G. A. Narsilio, A. Arulrajah & J. Kodikara (Eds.), 11th Australia - New Zealand Conference on Geomechanics: Ground Engineering in a Changing World (pp. 1268-1273). Australia: Engineers Australia.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7366&context=engpapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4434

Start Page


  • 1268

End Page


  • 1273

Place Of Publication


  • Australia

Abstract


  • In the recent past the use of geosynthetic-reinforcement to stabilise the rail tracks has been on the

    rise. The performance of such reinforced track is governed by the shear behavior of the ballastgeosynthetic

    interface. In view of this, large-scale direct shear tests were performed to explore the

    shear behaviour of rail ballast-geogrid interfaces. Fresh Latite ballast with an average particle size

    (D50) of 35 mm, and geogrids with different aperture sizes and shapes were used for this purpose.

    The laboratory experimental results indicate that the shear strength of ballast can be improved

    significantly when reinforced with geosynthetics, but the degree of effectiveness depends on the

    aperture to particle size ratios. It is expected that this study will assist rail engineers in selecting

    suitable geosynthetics for stabilising a given ballast gradation, to reduce track maintenance costs.

UOW Authors


  •   Syed, Khaja (external author)
  •   Indraratna, Buddhima (external author)
  •   Jayan Sylaja, Vinod

Publication Date


  • 2012

Citation


  • Hussaini, S. K Karimullah., Indraratna, B. & Vinod, J. J S. (2012). Performance of geosynthetically-reinforced rail ballast in direct shear conditions. In G. A. Narsilio, A. Arulrajah & J. Kodikara (Eds.), 11th Australia - New Zealand Conference on Geomechanics: Ground Engineering in a Changing World (pp. 1268-1273). Australia: Engineers Australia.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7366&context=engpapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4434

Start Page


  • 1268

End Page


  • 1273

Place Of Publication


  • Australia