geotextiles are one of the most widely used synthetic materials in filtration and drainage applications. since in real applications, geotextiles are subjected to various hydraulic gradients and confining stresses, hydraulic behavior of geotextiles under different circumstances is of great practical importance. in this study filtration and drainage properties of several nonwoven needle-punched g...

Impact tests of stones on a geotextile or two loosely connected geotextiles (composites) have been performed and analysed to investigate the mechanisms that lead perforation. The were mounted concrete cylinder 0.8 m internal diameter, filled with uniformly graded dry sand. Drop blocks different shapes weighing approximately 40 kg. drop heights varied between 0.25 5.5 m. Results show shape stone...

This paper presents the study of a mixed porous media composed of expanded perlite and a nonwoven needle-punched geotextile used to reduce the suspended solids load and concentration in urban runoff. Laboratory procedures were designed to quantify the suspended solids removal efficiency and variation in time of filtration rate. Different grain-size distributions of expanded perlite, diverse sus...

Abstract Geosynthetics are human made material used to reinforce soils improve the bearing capacity and permeability of soil, reducing soil settlement. application plays a vital role in highways constructions with no additive layers, such as cement concrete, asphalt or subgrade layer that affects unbounded layers. This paper presents geosynthetics tensional has been for reinforcement clayey soi...