Geotextiles have been utilized very effectively in road construction for more than 30 years. Their essential work is to isolate the sub base from the subgrade bringing about a more grounded road construction. The geotextile plays out this function by giving a thick mass of fibers at the interface of the two layers. It is recommended that the capacity of a geotextile to go about as a separator is to a great extent free of the mechanical normal for the geotextile and that strain relaxing geotextiles can in any case play out this job when stressed past their peak values. A strain energy way to deal with configuration isn't standard in geotechnical building structure, as it is hard to measure the outside vitality provided to the framework and the inside energies of the individual segments making up the development. Late research has proposed that an equality of strain energy, between various geotextile types, may exist up to the in service strain.