Geosynthetics in roads and pavements



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handbook of geosynthetics

 

 

Geogrids 

Smaller embankments may also be designed and 

constructed using single or multiple layers of 

high strength, high modulus reinforcing 

geogrids at the base. The geogrid(s) reduce 

lateral displacement and improve the overall 

stability of the soil embankment. 

 

Combination systems 

Geogrids are limited in ultimate strength by 

structure and polymer properties. In a combined 

system, a geogrid or a geotextile can be 

employed to facilitate the development of a 

working platform which is subsequently 

covered with the very strong geotextile. The 

embankment is then constructed on the 

geotextile. 




                                                    GEOSYNTHETICS IN REINFORCED SOIL SYSTEMS:                                              43      

Embankments over Soft Foundations, Reinforced Steepened Slopes, Mechanically Stabilized Earth Walls 

 

For more information please contact the Geosynthetic Materials Association at www.gmanow.com. 



 

Large factory-fabricated panels  

are deployed on the jobsite. 

 

 



 

Factory-fabricated panels must still be field sewn into 

continuous sheets of reinforcement.  

 

 



 

 

The connected panels are then positioned to assure that 



the reinforcement is oriented to maintain embankment 

stability. 

 

 

As the backfill is placed, the soft foundation soils  



begin to “mud wave”. 

 

 



 

The fill thickness tapers toward the embankment toe 

reducing the reinforcement requirements and allowing a 

lighter-weight geotextile to be used under the 

embankment slopes. 

 

 



The completed embankment is taller and has steeper side 

slopes than would be possible without reinforcement or 

alternative stabilization. 

 

 



 

 



                                                                            Handbook of Geosynthetics                                                                            44 

 

For more information please contact the Geosynthetic Materials Association at www.gmanow.com. 




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