Geosyntetic derive from

GEO = earth, soil
SYNTHETIC = made by human

So Geosynthetics is a planar, polymeric (synthetic or natural) material used in contact with soil/rock and/or any other geotechnical material, for Filtration,Drainage, Separation, Reinforcement, Protection, Sealing and Packing

The function of geosynthetic are:
– Drainage, to collect and transport fluids.
examples are geodrain and prefabricated vertical drain
– Filtration, to allow passage of fluids while preventing passage of soil particles
example is non woven geotextiles
– Protection, to prevent damage of a layer
example is non woven geotextiles
– Reinforcement, to improve the shear resistance of a soil
examples are geogrids and high strength woven geotextiles
– Separation, to maintain the integrity of a soil layer
examples are non woven geotextiles, woven geotextiles, combination geogrids and non woven
– Erosion control, to prevent soil erosion by water or wind forces
example is geomats
– Barrier, to prevent the migration of liquids orgases
examples are GCL and geomembranes
– Containing, to cover soil or sand to prevents of scouring
examples are non woven geotextiles and woven geotextiles


Geosynthetic derive into two parts, and it can look at the above picture.

Design approach:
– define the purpose and establish the scope of the project
– investigate and establish the geotechnical condition at the site (geology, subsurface, exploration, laboratory, and field testing, etc)
– establish application critically, severity, and performance criteria. Determine external factors that may influence the geosynthetic’s performance
– formulate trial designs and compare several alternatives
– establish the models to be analysed, determined the parameters, and carry out the analysis
– compare results and select the most appropriate design; consider alternatives versus cost, construction feasibility, etc. modify the design if necessary
– prepare detailed p;ans and specifications including: a) specific property requirements for the geosynthetic; and b) detailed installation procedures
– hold preconstruction meeting with contractor and inspectors
– approve geosythetic on the basis of specimen’s laboratory test result and/or manufacture’s certification
– monitor construction
– inspect after events (e.g. 100 year rainfall) that may tax structure performance

The soil reinforcement by geosynthetics generates a mechanical improvement of the soil by supporting tensile forces. The reinforcing elements are flexible and, due to their low bending stiffness, can only absorb axial tensile loads. The improvement acts to reduce the shear force that has to be carried by the soil, and to enhance the shearing resistance in the soil by increasing the normal stress acting on potential shear surfaces.

  1. […] “Geosynthetics is a planar, polymeric (synthetic or natural) material used in contact with soil/rock and/or any other geotechnical material for filtration, drainage, separation, reinforcement, protection, sealing, and packing.” Information is from Jefrihutagalung’s Blog…For Science n fun […]

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