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  • Increase Performance with Ballast & Sub-ballast Stabilization

  • Track Design with Spectra Rail Software

  • Intermodal Facilites: Improve Pavement Performance

 

 

What are Geogrids?

A geogrid is a geosynthetic material used to stabilize soil. Today, more designers are choosing to implement geogrids to improve the performance of the aggregate within structures to combat increasing material costs and withstand heavy traffic loads. 

How do geogrids work? Geogrids have openings, called apertures, which allow aggregate to strike through and provide confinement and interlock. As the aggregate layer stiffens, the load distribution over the underlying ballast or sub-ballast is enhanced, increasing its effective bearing capacity. Shear forces imposed within the aggregate layer as a result of trains passing are thereby partially transferred into the geogrid. Geogrids can improve the long-term performance of tracks by minimizing aggregate movement and maintaining modulus values. 

How Geogrids Work

 

SpectraRail System at Work in the Real World

Tensar's rail solutions offered significant cost and time savings while improving overall performance on these projects. 

Sub-Ballast Reduction and Service Life Extended

Port of Long Beach Intermodal: Sub-ballast extends track performance an estimated 20 years.

SPECTRA_CS_PoLB_Page_1

 

Significant Maintenance Reduction

Class 1 track maintenance extended from weekly to yearly; speed restrictions lifted.

SpectraRail_CS_OH_CaptinaTX190L

 

Cost and Time Savings

TriAx solution eliminates over-excavation and saves time compared to chemical stabilization.

Rangeland Loving NM 91018

 

Cost Savings

Tensar solution reduces  sub-ballast by four inches and avoided moving 900 ft of utilities.SPECTRA_CS_UTRAIL_Page_1

 

Geopier GeoSpike

The Geopier GeoSpikeSM system is a cost effective method for strengthening weak railroad track subgrades. This system is installed without removing railroad tracks, ties, or ballast. Geospike elements are driven to design depths, then aggregate is backfilled within the pre-manufactured shell. Rail owners, contractors, and designers use the Geopier GeoSpike system to improve the roadbed. 

GSP-01 Sarnia Ontario - Interactive PS_Page_1Project Example: Canadian National St. Clair Subdivision
Dynamic deflections of the railway reduced by 60% without removing the track, ties or ballast. Click the image to read more about the project.

 

 

Geopier SRT system

Geopier ground improvement is also used to cost-effectively stabilize shallow slides along existing soil embankments by using the Geopier SRT® system. The patented SRT Plate Pile™ method is well suited to stabilize slides or steep slopes that do not meet required stability criteria, such as slope inclination between 17 degrees (3:1) to 45 degrees (1:1), slides up to 15 feet thick, all soil types (with the exception of very loose to loose sand) overlying an underlying competent layer into which the Plate Piles penetrate and Plate Piles may be installed into soft rock (e.g. siltstone, claystone, mudstone, weathered shale, etc.).

SRT-20 NorfolkEmbankment - TNProject Example: Norfolk Southern Embankment Slope
Slope repair solution with a highly accelerated response time and construction schedule

 

 

 

To learn more about the GeoSpike system, SRT system and other Geopier rail solutions, email Don Herbert.

How Geopier GeoSpike Works

GeoSpike Animation

 

A Look at Geopier SRT System

SRT On-Site Installation and Animation

 

 

 

About Tensar

At Tensar International, finding solutions that lower construction costs and bring added value is our top priority. That’s why we put our experts to work, showing engineers and contractors around the world how to build smarter infrastructure using geogrid technology. With decades of research and real-world experience under our belt, our geogrid solutions bring significant cost and time savings across a wide range of civil applications like:

Soil Stabilization  |  Pavement Optimization  |  Foundations
Working Platforms  |  Walls and Slopes

We're proud to offer state-of-the-art design solutions – specialty solutions based on advanced technologies proven since 1982. Tested in the most challenging conditions, these comprehensive solutions save time, resources and money. They’ve become the standard by which others are measured.

 

Tensar-Starting-Point-For-Every-Road-Ahead

 

 

Tensar by the Numbers

1,000,000+

ESALs of Research and Still Counting...

30+

years experience

500+

distributors worldwide

4

global manufacturing facilities

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Tensar invests heavily in research and development. This endeavor leads to new findings, new products and new resources that we often share via our blog.

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