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GEOWEB Confinement Benefits for Track Stabilization

By creating a more stable and stiffer layer under track, the GEOWEB soil stabilization system is a proven solution for ballast stability problems. The 3D system delivers performance and constructability benefits not provided by 2D planar geogrids or Hot Mix Asphalt (HMA)—especially in soft subgrades.  Extreme field testing and research at TTCI and Oregon State University substantiated the GEOWEB system’s benefits to the ballast layer–reducing settlement and track displacement under heavy freight loading over very soft subgrades.  University of Kansas SmartRock testing also revealed a significant reduction in ballast abrasion, movement and rotation resulting in extended ballast life.   See More on GEOWEB Ballast Research

TTCI Performance ResultsOSU Finite Element Analysis  |  KU Ballast Testing 

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GEOWEB Benefits for Track Ballast Reinforcement

Railway engineers worldwide have relied on GEOWEB long-term confinement to create high stiffness foundations under track and high stress areas such as bridge abutments, diamonds and turn-outs. The GEOWEB system is extremely effective in stabilizing track sub grades and limiting differential and long-term settlement.

  • Reduces Cross Section Thickness:  Ballast confined in the 3D GEOWEB provides structural benefits to reduce cross section thickness by up to 60%, significantly reducing installation and rehabilitation costs.
  • Reduces Ballast Degradation:  Long-term confinement significantly reduces ballast movement and rotation resulting in increased ballast life.
  • 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 during any weather conditions.

GEOWEB 3D Benefits Compared to 2D Geogrids

GEOWEB 3D Benefits:

  • Reduces ballast depth 2-3 times.
  • One-step direct deployment over soft soils.
  • Limits differential and long-term settlement through hoop strength and active/passive resistance.
  • Ideal for difficult or limited access.
  • Fast deployment = limited down-time.

See Benefits of GEOWEB Compared to Geogrids