Testing Procedures, Specifications, and Applications for Geofabrics in Highway Pavements (414-1F)

This report summarizes the literature available on testing and specifications for geofabrics to be used in highway pavement applications. The applications considered are: f=drainage separation, reinforcement, silt fencing, and impermeable barriers. Based on this survey, a testing program and tentative specifications are presented. In addition, this report summarizes the Texas Highway Department's experience with geofabrics. It recommends areas in which geofabrics appear cost-effective, makes recommendations for future experimental work, and presents an analytical procedure by which the strengthening effect of geofabrics under base courses can be modeled.