The prediction of elastic limit of nonwoven geotextiles made of virgin and recycled polyester fibers

Mechanical properties of needled nonwoven geotextile materials depend on their structural solutions,as well as on the technological conditions in the production. thereby,structural and physical-mechanical properties of fibers,surface mass of geotextiles and the needling process parameters have the most important function. the paper presents the results of the analysis of mechanical characteristics of nonwoven geotextile material made of virgin pes fibers and recycled pes fibers with surface masses of 150 g/m2,200 g/m2,250 g/m2,300 g/m2 and 500 g/m2. also,the elastic limits of deformation of needled geotextile materials are determined,which define permitted loads that geotextile materials can be subjected to,without disturbing their structure. force intensities and work under these forces are determined at elastic limits of the geotextiles and their relationship with appropriate breaking parameters is presented. the proposed method and the results can be used to predict the permitted loads,which a non-woven geotextile material may be subjected to during exploitation.