Nonwoven Geotextile Interlayers in Concrete Pavements

Proven by German engineers to be effective, this concept is not common or widespread in the U.S. However, as part of a recent effort to demonstrate the use of nonwoven geotextile interlayers as concrete pavement interlayers, initial recommendations for materials specifications and better construction practices were developed. Implementation of a nonwoven geotextile interlayer was successful in two recent field trials in Missouri and Oklahoma. The material proved to be cost effective, required minimal training and equipment during construction, and could be placed rapidly. As a result, nonwoven geotextiles have the potential to be a viable alternative to more conventional materials as an interlayer in the U.S. pavements.