Geotextile and geomembrane: Know the difference

Geotextile and geomembrane: Know the difference

Geomembrane and geotextile are both used geotechnical materials. The reason behind this is that they utilize geotechnical materials as well as waterproof materials and have plenty of similarities, they are actually 2 completely different materials. 

Material composition

Geomembrane is a sort of waterproof barrier material based on high polymers, normally Polyethylene material.

Geosynthetic manufacturers in India called Geotextiles, by the name geotextiles, are permeable geosynthetic materials made of synthetic fibers that are needles or woven. Materials are polyester/pet or polypropylene/pp.

In simplest form, geomembranes are impermeable & geotextiles are permeable.

Main applications

According to the Geocell manufacturer in India, and as per the impermeable characteristics of geomembrane, it can meet the impermeable needs of the sports hall, railway, highway, tunnel, landfill, dam, hydraulic construction, biogas pool & biogas pool, environmental protection, and other projects.

Combined with the filtration and permeability characteristics of geotextile, it is widely used in highways (including temporary roads), earth and rock dam, railway, embankment, airports, sports fields & other projects to strengthen the weak foundation.

And as per the requirements of different projects, geomembrane & geotextile are combined. Geomembrane serves as the protective layer, drainage & exhaust layer, and reinforcement layer of geomembrane, cushion layer, and geomembrane serve as the impermeable main body.

The difference in performance and use:

The geomembrane is prepared by high-density polyethylene, which is utilized to prevent seepage, while the geotextile is created by non-woven fabric. When we utilize them, we mostly use them together. They are split into two parts one is fabric & another one is a membrane and 2 fabrics and one membrane, which have stronger reinforcement & anti-seepage performance. Geotextile is a permeable geosynthetic material built by synthetic fibers through needle punching or weaving. It is utilized in large buildings, roads, non-ferrous metal tailings treatment, water conservancy, railways, power plant ash dam construction, environmental protection engineering, and soil & water conservation. etc. According to HDPE geomembrane manufacturer in India, the Geomembrane is a plastic film, on the other hand, geotextile is a fiber cloth geotextile, which is utilized in roads, water conservancy, railways, power plant ash dam construction, large buildings, environmental protection engineering, non-ferrous metal tailings treatment, soil and water conservation, etc.

Water permeability:

Geomembrane is impermeable, and geotextile is permeable. Geotextile is a sort of good geotechnical data. The request of design for the permeability coefficient of geotextile is greater than 10times the permeability coefficient of the soil. So, the front water head should be raised. The particles of soil with a smaller particle size are entrained into the geotextile. This situation builds away from the geotextile & forms a certain thickness of an overhead layer composed of particles of coarse soil. In this layer, the particles are coarser as well as saturated. The coefficient is greater, but it can’t prevent the movement of particles of fine soil. When the filtering effect of the geotextile is exerted, a layer of natural filter will be formed on the upstream side of the overhead layer, also the content of fine soil particles in the natural filter layer is greater than that of the overhead layer. Moreover, the water permeability is low, which hinders the movement of the particles of fine soil in the adjacent natural soil layer, so it plays an incredible role in retaining the soil. This is how geotextiles work.