SUBGRADE STABILISATION AT A HOUSING ESTATE USING TENSAR INTERAX

PROJECT DESCRIPTION

As an alternative to traditional design methods, a leaner working platform was required for the Stoneleigh Park Overbridge piling operations, which needed to address the issues of high rig track pressures over a variable subgrade

Following comprehensive geotechnical investigation, the subgrade conditions were identified as variable; between cohesive and granular over the 5,000m² area. The project team aimed to also substantially reduce the volumes of imported fill to be used in the platform’s construction and maintenance.

OUR SOLUTION

Using the updated T-value method in conjunction with Tensar’s best ever performing geogrid, Tensar InterAx, a mechanically-stabilised solution was proposed, resulting in significant quantifiable savings in whole life construction time, cost and embodied carbon emissions.

PRODUCT USED

Tensar® InterAx® Geogrid

• Speeds up construction, saving up to 70% in aggregate section reduction
• Optimised geometry design for maximum confinement and compaction of granular fill, creating the most efficient mechanically stabilised layer (MSL)
• Improves compaction and restrict the movement of the particles over time, retaining the stiffness long term and further enhancing performance of the MSL
• Results in a more resilient solution that will withstand severe weather events, the increasing impact of climate change, and other challenging environmental conditions
• Improves interaction between the geogrid and aggregate for better performance
• Less aggregate is required to meet project requirements, which leads to savings on cost, time and carbon emissions
• Ideal for subgrade stabilisation, roads, heavy-duty pavements, and working platforms