02-05-2017, 11:16 AM
A geotextile is a kind of industrial grade textile that is composed of polypropylene and / or polyester resin (petroleum refining process products) that have yarns. The yarns have chemical and thermal bonding properties to make a flat permeable sheet. Textiles are also available. Mainly geotextiles have four functions in the pavement-separation, drainage, filtration and reinforcement. Pavements typically consist of a bituminous or concrete surface, an aggregate base layer or a support layer and then the natural soil layer.
The geotextiles prevent the mixing of the fine soils of the substrate with the added support layer. By avoiding this mixture, the geotextiles prevent the early deterioration of the roads. In order to quantify the improvements in geosynthetically stabilized pavement, two tests will be carried out. From both experiments, it can be analyzed how the geosynthetically stabilized pavement is different from the pavement without geotextiles.
Geo-textiles are permeable fabrics which, when used in association with soil have the ability to separate, filter, reinforce, protect or drain. Typically made of polypropylene or polyester, geo-textile fabrics come in three basic shapes: woven, needle-punched or heat-bonded. The original term and even sometimes used for geo-textiles is filter cloths. Geotextiles have many applications and currently support many civil engineering applications including roads, airfields, embankments, retaining structures, reservoirs and construction sites.
Geotextiles play an important role in the construction of paved roads in areas with a high water table. There are several key applications, pavement construction, asphalt concrete layers and drainage systems, which helps improve performance and prolong road life. Drainage of pavement water has always been an important consideration in road design. When it functions as a drainage, geo-textiles acts as a conduit for the movement of liquids or gases in the geotextile plane. Some of the geo-textiles used for drainage are wick drains and blanket drains.
