Paved Roads by Tough Cell® – Road Building for Longevity
Our world is constantly in motion, much of it on our streets and highways. For the foreseeable future, paved roads (flexible or rigid) will continue to play a critical role with our growing transportation needs. Erosion control and pavement reinforcement in highway construction gives extra life to our roads.
Cellular Confinement Perfected
NPA Geocell technology surpasses the performance of geogrid and also allows incorporation of locally available, weaker granular materials including sand, river rock and recycled concrete/RAP. Tough Cell marks a pinnacle in the evolution of road construction service and technology – a high performance geocell made of a Novel Polymeric Alloy that accelerates road construction and confines and reinforces infills like never before. Initially researched by the US military, geocells and Tough Cell technology now serves civilian traffic on paved roads longer and for less cost.
Building Smarter – Building Better
Paved roads built on a Tough Cell base are smarter and better in many ways. Here are some of the reasons:
- Tough Cell paved roads require less subgrade treatment than conventional construction.
- Priority is removal of organics – subsoil replacement is not necessary
- Excavation can be much less
- Existing strata may be adequate
- Because of increased reinforcement of infill material, the amount of infill needed is greatly reduced. Less infill means:
- less trucking
- less placement
- less compaction
- The stronger subbase usually means the pavement layer can be 20-30% thinner.
- Fewer layers to place and compact is another time saver.
- Reduced and flexible material requirements
- Cut infill by as much as half
- Use lower grade, less costly infills
- Use recycled material infill
- Reduce road pavement material requirement
Saving the Earth
Aggregate and other building materials are getting increasingly scarce. Most road building company practices demand high-grade or virgin materials and generate excessive greenhouse gas emissions to process them.
- Tough Cell paved roads require less materials than conventional roads.
- 40% less infill in most cases
- The stronger base modulus means a thinner wear layer is possible and recommended. Typically, a 20-30% savings on road pavement material is realized. Often, much more.
- A reduction in material translates into a comparable reduction in equipment time to process it.
- Studies indicate cutting 20% or more CO2 emissions from the overall construction process by using Tough Cell.
- Lengthen periods between maintenance activities.
- Wear surface maintenance extended by 2x typically.
- Wear surface replacement extended by 1.5 – 2x can be expected.
- Road base modulus improvement extends base lifespan.
Extending the Maintenance Cycle
A Tough Cell base introduces such a high level of pavement reinforcement that the service life of the pavement layer can be extended many times as long.
Over the expected service life, the road pavement over a Tough Cell road base typically experiences:
- Reduced rutting
- Reduced cracking
- Reduced deformation
These reductions lead to a big increase in the longevity of your maintenance budget and service life of paved roads everywhere.