This article first appeared in the Railway-News magazine, Issue 2 2023.
A significant number of research studies have been carried out to investigate the benefits of using geocells in railway trackbed applications.
Combined with an ever-expanding list of successful projects from around the world, the benefits of using geocells in rail ballast stabilisation is welldocumented. Rail operators understand that durable track geometry starts with a solid foundation, and geocells have emerged as a powerful value engineering tool for reinforcing ballast and sub-ballast layers while optimising layer thicknesses.
Many practitioners may not be aware of the critical role that geocell junctions (both mechanical and internal) play in ensuring that the installed system performs in a uniform and consistent manner. In trackbed stabilisation applications, non-uniform junction performance can lead to differential settlement and localised subsidence – which in turn can lead to serviceability issues and a reduction in overall design life. In essence, poor junction performance can nullify all the intended benefits of a geocell system.
This article will succinctly discuss the different types of junctions present in geocell systems, failure mechanisms and test methods, and the concept of junction efficiency as a performance parameter.
There are two types of junctions present in any geocell system: internal junctions, the factory-welded seams that create the interior cells of the panel, located within the body of a geocell panel; and mechanical junctions located around the perimeter of an individual panel, formed during installation when adjacent panels are connected in the field, creating mechanically joined cells along panel joints. Since a primary mechanism by which geocells provide benefit is through lateral confinement of the infill, it is vital that both types of junctions remain intact during construction and throughout the design life of a project.
Railway-News magazine Issue 4 Track & Infrastructure edition, November 2022: Presto Geosystems - Retaining Wall Eliminates Track Instability.
Complete your rail projects successfully using this handy resource guide from soil stabilisation expert, Presto Geosystems.
Railway-News magazine Issue 2, June 2022: Presto Geosystems – Geocells Protect Railroads Against Potential Impacts of Climate Change.
Railway-News Magazine Issue 1, March 2022: Presto Geosystems – GEOWEB® Geocell Reinforcement Improves Performance of Railway Track Beds.
Presto Geosystems has announced a webinar entitled Port & Intermodal Yard Stabilisation with the GEOWEB® 3D Geocells.
Presto Geosystems will be holding a webinar on March 14 to discuss rail ballast stabilisation with its GEOWEB® 3D Geocells.
Presto Geosystems will be hosting a free online webinar on Port & Intermodal Yard Stabilisation, presented by Bryan Wedin.
Stabilize your toughest, chronic maintenance areas using the GEOWEB® 3D Soil Stabilization System with lower cost and higher performance.
The ATRA® Wall Keys are the most effective way to connect the GEOWEB Retaining Wall sections, ensuring the long-term success of your project.
To prevent erosion, slides, and washouts from heavy rain, railroad owners rely on the GEOWEB® Soil Stabilisation System.
GEOWEB® geocells have been used to improve and reinforce the structural performance of railway track beds worldwide for more than 40 years.
Presto Geosystems Webinar Announcement – April 26, 2022: Rail Ballast Stabilisation with the GEOWEB® 3D Geocells.
Presto Geosystems' video shows how to solve soil stability challenges in rail applications using the GEOWEB geocell system.
GEOWEB® ballast stabilisation system creates high-stiffness foundation under track for Werrington Dive Under project.
Presto Geosystems GEOWEB® Geocells for Permanent Way Applications. Creating a stable and stiffer layer under track.
Presto Geosystems offer an on demand webinar for rail ballast stabilisation solutions using the GEOWEB® 3D Geocells System.
Presto Geosystems' Port & Intermodal Yard Stabilisation with the GEOWEB® 3D Geocells webinar will take place on Tuesday, August 10, 2021.
Rail Ballast Stabilization: Presto Geosystems' GEOWEB-stabilized ballast reduces ballast movement, aggregate rotation, and rail settlement.
Presto Geosystems’ GEOWEB® 3D geocells technology has supported the rail industry for 40 years, for both new construction and repairs.
Presto GeoSystems Quick Repair of Track Subgrade & Railroad Right-of-Way. Ballast Emergency Repair. Slope Emergency Repair.
Since its installation in 2018, the GEOWEB system has exceeded project expectations and required no maintenance or repairs.
The GEOWEB® Load Support System provides base-layer & surface stabilisation for Dakar's Port Container Yard.
FREE Webinar: Port & Intermodal Yard Stabilization. Learn how the GEOWEB system extends pavement life and reduces maintenance.
Presto Geosystems GEOWEB® 3D Soil Confinement System stabilises soft subgrade and reduces cross-section for heavy loads at port facility.
Use the form opposite to get in touch with Presto Geosystems directly to discuss any requirements you might have.