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| Improving Paved and Unpaved Applications |
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The Spectra Roadway Improvement System increases the economics and performance of subgrade, granular base and even asphalt, thereby:
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Simplifying and speeding construction |
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Decreasing labor and equipment requirements |
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Reducing aggregate fill thickness(es) |
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Reducing asphalt base and wearing course thickness(es) |
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Reducing undercut/overexcavation |
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A growing number of transportation professionals are considering designs that incorporate Tensar International Corporation's newly updated Spectra® Roadway Improvement System. The Spectra System can actually increase the effective strength of a pavement structure or an unpaved working surface through the composite of a high performance geogrid and granular fill to form a mechanically stabilized layer (MSL). Tensar's revolutionary TriAx (TX) Geogrid and aggregate fill interact to create a more robust structure. The result is a stronger, yet not brittle, paved or unpaved structure that's more economical, better performing, more durable and predictable.
Dr. J. P. Giroud and Dr. Jie Han published an iterative haul road design methodology in 2004 for subgrade improvement design. Their work is the most comprehensive advancement in the structural design of unpaved applications in the last 25 years. Tensar International Corporation has incorporated this state-of-practice approach in its latest release of its ground breaking design analysis tool, SpectraPave4™ Software. This resource, combined with over 25 years of practical site and design experience, is what helps comprise the Spectra Roadway Improvement System as a true system solution:
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| Tensar TriAx (TX) Geogrids |
High performance reinforcement geosynthetic. |
| Unbound Granular Fill Material |
Reinforced building material to yield the mechanically stabilized layer (MSL) composite. |
| Site Assessment and Assistance |
Qualified and experienced field assistance and services before, during and after construction. |
| Full Engineering Services |
Detailed design services, drawings, and quality control testing.
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