1 January 2014

TenCate Mirafi® HP Stabilization of Soft Swamp Subgrades Using Woven Geotextiles US 90 Roadway, Louisiana, USA

Constructing roads through the extensive swamp areas of South Louisiana, USA is typical of this type of application, and a major challenge for the Louisiana Department of Transportation. Uneven long term differential settlement of road embankments, especially when embankments are constructed using sand fill results in an uneven road level and the typical "roller coaster" ride that is so familiar to drivers.

Surface pumping of the initial layers of fill installed over soft wet subgrades is a typical consequence when geotextiles are not used. The problem can be typically solved using either a combination of non-woven geotextiles with one or more layers of biaxal geogrid to reinforce the subbase layers, or a single layer of high strength and modulus woven geotextile.

Blue fabric (Tecawork Blue 65287)