Polypropylene Gravel Geogrid

Geogrid Base application:

Geogrids have been used in pavement design for the past 36 years. Geogrid reinforcement is used

in permanent paved roadways in two major application areas – base reinforcement and subgrade

stabilization. In base reinforcement applications, the geogrids are placed within or at the bottom

of unbound layers of a flexible pavement system and improve the load-carrying capacity of the

pavement under repeated traffic. In subgrade stabilization applications, the geogrids are used to

build a construction platform over weak subgrades to carry equipment and facilitate the

construction of the pavement system without excessive deformations of the subgrade.

Upon completing this workshop, the participants will be able to:

• Restate soil conditions where geogrids are applicable.

• Identify geogrid functions in road stabilization applications.

• Discuss primary mechanism for reinforced base applications and locate design methods

including developments in mechanistic empirical design.

• Identify the qualitative cost-benefit of using geogrids in roadway sections and locate

methods for quantitative evaluation.

• Discuss construction requirements for geogrids in roadway applications.