Ground Stabilisation Reinforcing unbound layers in roads and trafficked areas

The six major ground stabilisation For details of Tensar workshops visit www.tensar-international.com 2 Tensar Technology - proven practical solutions and the know-how to get them built Based on the characteristic properties of Tensar geogrids, Tensar Technology is widely adopted for ground stabilisation and soil reinforcement problems. Tensar Technology can deliver real savings in cost and time to your projects. We can help you apply Tensar Technology to improve the bottom line on your project. Reducing layer thickness Numerous research programmes over the years have consistently proven the...

Tensar TriAxTM geogrids have proved to be extremely efficient at confining and stabilising aggregate. TriAxTM has replaced Tensar biaxial geogrids in most stabilisation applications delivering even greater cost savings applications for Tensar Technology 3 Increasing bearing capacity By applying Tensar Technology the load spreading capability of a Tensar TriAxTM stabilised layer can increase the bearing capacity of working platforms for heavy-duty plant, cranes and piling rigs. Controlling differential settlement Multiple layers of Tensar TriAxTM geogrids in an aggregate layer creates a flexurally...

The versatility of Tensar geogrids Since the early 1980s several hundred million square metres of Tensar geogrids have been used in tens of thousands of projects. In 2007, Tensar TriAxTM geogrids were introduced to provide a significant advancement in geogrid technology. Tensar geogrids have been used in most countries in the world, under a wide variety of climates and soil conditions, and frequently Tensar Technology has been used to solve difficult design or construction problems. The Tensar TriAxTM manufacturing process produces a special grid structure, consisting of high strength junctions...

5 Do all geogrids work in the same way? Alternative geogrid reinforced pavement - tensioned membrane mechanism ¡ Geogrid membrane needs anchorage at edges ¡ Load is directed to geogrid membrane ¡ Geogrid and subgrade deform ¡ Performance gain only after extensive trafficking ¡ Wheel path must be maintained within rut line to maintain the effect Tensar geogrid reinforced pavement - interlock mechanism ¡ Interlock stiffens the aggregate layer ¡ Load spread is increased ¡ Vertical stress is reduced ¡ Performance is improved This is a common question when considering the benefits of using geogrids...

Tensar Mechanically Stabilised Layers Granular layers reinforced with Tensar TriAxTM geogrids perform as a composite due to the interlock phenomenon. The geogrid/aggregate composite can then be regarded as a Tensar Mechanically Stabilised Layer (MSL). Designers and specifiers can choose to specify a Tensar Mechanically Stabilised Layer and be confident in the knowledge that the properties and performance of the composite are known and definable. The ‘equivalent unstabilised layer’ can be thought of in different ways and therefore it can be introduced into existing design methods according to...

7 Quantifying the performance benefit In order to define the effective thickness of Tensar mechanically stabilised layers, common performance data has been accumulated from numerous monitored trials on full scale trafficking demonstrations over many years; initially with Tensar biaxial geogrids and more recently with TriAxTM geogrid. 1985 - Tensar has shown complete commitment to full scale testing over a period of more than 20 years 1981 - Testing of Tensar for ground stabilisation commenced in 1981 with some very simple bearing tests that demonstrated the benefit of the interlock mechanism...

Each of the six major applications brings major benefits and these can often be converted to a cost advantage For details of Tensar workshops visit www.tensar-international.com 8 Reducing layer thickness By reducing the capping layer thickness by up to 50% with no performance loss compared with a standard unreinforced design, the contractor can save significant money on the costs of the ground improvement work as well as achieving savings of up to 50% in construction CO2 emissions. Increasing life Road rehabilitation, especially if it involves full depth reconstruction, is an expensive item for...

9 TriAxTM installation, Stoke Reinforcing weak soil in Ashbourne, Derbyshire Improving and strengthening the A66 in Melsonby Stabilising ground to facilitate off road parking at Lanarkshire ¡ Reducing layer thickness ¡ Increasing life ¡ Controlling differential settlement ¡ Capping weak deposits ¡ Increasing bearing capacity ¡ Reducing layer thickness ¡ Increasing life ¡ Reducing layer thickness ¡ Increasing bearing capacity ¡ Controlling differential settlement Practical examples of the major applications

Airport pavements As the weight of newer generations of aircraft increases, the intense wheel loads need special consideration in providing a robust base to runways and taxiways. Dock pavements Container handling and stacking areas, bulk cargo handling and fabrication sites commonly impose highly concentrated wheel or track loads. Safe working platforms Cranes and piling rigs require a working platform to operate safely and with controlled accuracy. Frequently, these operations have to take place over very weak subgrades. Railway trackbed Both the ballast layer and the sub ballast bearing layer...

11 Tensar SS & SSLA geogrids Tensar SS-G & SSLA-G geocomposites Tensar TriAx™ & TX-G™ geogrids Tensar International Support Services PROFESSIONAL SOLUTIONS We offer the services of a team of professionals who can assist in developing concepts to support your design or undertake full construction design. We also provide advice and training on site to assist you to effectively install our products and systems in your project. Our range of innovative products is combined with our global experience of thousands of projects in a wide variety of climatic conditions and soil types. This means that we...