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Accredited Track Research Proves GEOWEB Ballast Performance

A 2.5 year under track research test at the Facility for Accelerated Service Testing at the Transportation Technology Center (TTCI) in Pueblo, Colorado proved the GEOWEB geocell system’s significant benefits for track subballast reinforcement.  The GEOWEB system was proven to provide more than 14 times the accumulated gross loading between tamping cycles than unreinforced track and is even more beneficial in soft soil environments.  GEOWEB systems outperform geogrids and Hot Mix Asphalt (HMA).

AAR-TTCI Performance Results  |  GEOWEB Comparison to Geogrids

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AAR-TTCI Substantiated Performance Results

AAR-TTCI Tested, Long-Term Performance:  A 2.5 year under track research at the Facility for Accelerated Service Testing at the Transportation Technology Center (TTCI) in Pueblo, Colorado proved the benefits of the GEOWEB system for track subballast stabilization.

  • GEOWEB reinforced track extended tamping cycle to 200 mgt; Unreinforced track required tamping every 15 mgt.
  • More than 14 times the accumulated gross loading between tamping cycles.
  • The GEOWEB system outperforms Hot Mix Asphalt (HMA) and is a better alternative than geogrids for under track stabilization in soft subgrade environments. See Comparison

GEOWEB Benefits for Track Ballast Reinforcement

Railway engineers worldwide have relied on the GEOWEB technology to create high-stiffness roadbed foundations under track, and at bridge approaches, diamonds and turn-outs. The GEOWEB system is extremely effective in stabilizing track subgrades, and has even more beneficial value in soft soil areas. 

  • Reduces Rock Size and Cross-Section Thickness: Rock confined in the 3D GEOWEB structure replaces expensive larger stone, reducing aggregate size by up to 10X. The aggregate thickness & cross-section can be reduced by up to 50%.
  • Less Down-Time: The GEOWEB material can be quickly installed to make any necessary repairs and minimize costly track disruptions.
  • Installation Benefits: Due to the ease of installation, the GEOWEB material can be installed by the railroad’s on-site crews.