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Geosynthetics are used in temporary roads to reduce rutting of the gravel surface and/or to
decrease the amount of gravel required to support the anticipated traffic. Furthermore, the
geosynthetic helps to maintain the aggregate thickness over the life of the temporary road.
Where the soils are normally too weak to support the initial construction work, geosynthetics
in combination with gravel provide a working platform to allow construction equipment
access to sites. This is one of the more important uses of geosynthetics. Even if the finished
roadway can be supported by the subgrade, it may be virtually impossible to begin
construction of the embankment or roadway. Such sites require stabilization by dewatering,
demucking, excavation and replacement with select granular materials, utilization of
stabilization aggregate, chemical stabilization, etc. Geosynthetics can often be a cost-
effective alternate to these expensive foundation treatment procedures.
For permanent road construction, a temporary working platform can be constructed to
provide an improved roadbed using geogrid reinforcements with an aggregate layer to
provide a form of mechanical stabilization. This mechanically stabilized aggregate layer
enables contractors to meet minimum compaction specifications for the first two or three
aggregate lifts. This is especially true on very soft, wet subgrades, where the use of ordinary
compaction equipment is very difficult or even impossible. Long term, a geogrid or, in some
cases, a geocomposite acts to maintain the roadway design section and the base course
material integrity. Thus, the geosynthetic will ultimately increase the life of the roadway.
Another geogrid application in roadways is to place the geogrid or geocomposite at the
bottom of or within the base course to provide reinforcement through lateral confinement of
the aggregate layer. Lateral confinement arises from the development of interface shear
Permanent Paved and Unpaved Roads
For permanent road construction, a temporary working platform can be constructed to
provide an improved roadbed using geogrid reinforcements with an aggregate layer to
provide a form of mechanical stabilization. This mechanically stabilized aggregate layer
enables contractors to meet minimum compaction specifications for the first two or three
aggregate lifts. This is especially true on very soft, wet subgrades, where the use of ordinary
compaction equipment is very difficult or even impossible. Long term, a geogrid or, in some
cases, a geocomposite acts to maintain the roadway design section and the base course
material integrity. Thus, the geosynthetic will ultimately increase the life of the roadway.
Another geogrid application in roadways is to place the geogrid or geocomposite at the
bottom of or within the base course to provide reinforcement through lateral confinement of
the aggregate layer. Lateral confinement arises from the development of interface shear
Geosynthetics are used in temporary roads to reduce rutting of the gravel surface and/or to
decrease the amount of gravel required to support the anticipated traffic. Furthermore, the
geosynthetic helps to maintain the aggregate thickness over the life of the temporary road.
Where the soils are normally too weak to support the initial construction work, geosynthetics
in combination with gravel provide a working platform to allow construction equipment
access to sites. This is one of the more important uses of geosynthetics. Even if the finished
roadway can be supported by the subgrade, it may be virtually impossible to begin
construction of the embankment or roadway. Such sites require stabilization by dewatering,
demucking, excavation and replacement with select granular materials, utilization of
stabilization aggregate, chemical stabilization, etc. Geosynthetics can often be a cost-
effective alternate to these expensive foundation treatment procedures.
For permanent road construction, a temporary working platform can be constructed to
provide an improved roadbed using geogrid reinforcements with an aggregate layer to
provide a form of mechanical stabilization. This mechanically stabilized aggregate layer
enables contractors to meet minimum compaction specifications for the first two or three
aggregate lifts. This is especially true on very soft, wet subgrades, where the use of ordinary
compaction equipment is very difficult or even impossible. Long term, a geogrid or, in some
cases, a geocomposite acts to maintain the roadway design section and the base course
material integrity. Thus, the geosynthetic will ultimately increase the life of the roadway.
Another geogrid application in roadways is to place the geogrid or geocomposite at the
bottom of or within the base course to provide reinforcement through lateral confinement of
the aggregate layer. Lateral confinement arises from the development of interface shear
Permanent Paved and Unpaved Roads
For permanent road construction, a temporary working platform can be constructed to
provide an improved roadbed using geogrid reinforcements with an aggregate layer to
provide a form of mechanical stabilization. This mechanically stabilized aggregate layer
enables contractors to meet minimum compaction specifications for the first two or three
aggregate lifts. This is especially true on very soft, wet subgrades, where the use of ordinary
compaction equipment is very difficult or even impossible. Long term, a geogrid or, in some
cases, a geocomposite acts to maintain the roadway design section and the base course
material integrity. Thus, the geosynthetic will ultimately increase the life of the roadway.
Another geogrid application in roadways is to place the geogrid or geocomposite at the
bottom of or within the base course to provide reinforcement through lateral confinement of
the aggregate layer. Lateral confinement arises from the development of interface shear