TerraTex GS is used in similar fashion to earlier geotextiles in that it performs the functions of separation and reinforcement
TerraTex GS offers the advantage of savings in aggregate depth up to 40% in unpaved systems and approximately 20% in paved systems.
Traffic loads (or compaction during construction) typically cause a mixing of the high cost aggregate and subgrade. This intermixing can occur in both paved and unpaved structures. As the subgrade pumps into the aggregate, the supportive strength of the aggregate is lost and rutting or pavement cracking can result. TerraTex GS with its high puncture resistance, acts as a barrier to prevent this wasteful mixing.
TerraTex GS is put into tension as traffic loads are applied. The extremely high modulus (resistance to stretching) of TerraTex GS causes it to absorb those loadings and distribute them over a large area. The resulting decrease in pressure on the subgrade can result in a significant reduction in required aggregate depth.
Installation of TerraTex GS is straightforward as shown. The rolls are designed for ease of transporting and handling in the field. When more than one width of fabric is installed, the fabric edges must be overlapped one to three feet depending on soil conditions (different measures may be required in especially poor soils). TerraTex GS is extremely tough but is not indestructible. Operation of vehicles directly on the fabric should be avoided and on uncompacted sections should be done by experienced personnel only.
Webtec, Inc., 2619 West Blvd., P.O. Box 240302, Charlotte, NC 28224. Tel: 704-398-0954; Fax: 704-394-7946.