The Important Functions of Geotextiles used in Roadway Base Course Construction
Bruce A. Lacina, TenCate Geosynthetics
The simple separation of roadway construction materials from one another as shown in Figure 1 ensures that these materials function as they were initially designed and intended to perform, and to maintain the structural integrity of the roadway.
Using geotextiles in roadway construction is the most basic and cost effective way to accomplish separation of the roadway aggregate base course (BC) or subbase (SB) from the subgrade (SG) soils.
There are many more benefits to using geotextiles in roadway construction than just simple separation as can easily be realized from the information provided in this technical note. The function of geosynthetic stabilization also relies on the geotextile separation function, but relies more heavily on other geosynthetic properties which will be discussed in more detail later.