Define Geosynthetics

25-10-2021

Define Geosynthetics


Geosynthetics is a general term for various products made from synthetic materials used in geotechnical engineering and civil engineering construction. Because they are mainly used in geotechnical engineering, they are called "geo-synthetic materials" with the word "geo" (geo) to distinguish them from natural materials.

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Geosynthetics used to be called "geotextile" and "geomembrane". With the need of engineering, new varieties of these materials continue to appear, such as geogrids, geonets and geotextile bags, geonet mats, geotechnical belts, composite geomembranes, bentonite geosynthetics clay liner, composite drainage geonet, etc., the original name It is no longer possible to accurately cover all products, so for a period of time afterwards, they are called "geotextiles, geomembranes and related products (relate products)". Obviously, such a name should not be used as a technical or academic term. For this reason, at the Fifth International Geosynthetics Academic Conference held in Singapore in 1994, the name of this type of material was officially determined as "geosynthetics" (geosynthetics).

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The raw material of geosynthetics is polymer. They are made of chemical substances extracted from coal, petroleum, natural gas or limestone, and then further processed into fibers or synthetic material sheets, and finally made into various products. The polymers used to manufacture geosynthetics mainly include polyethylene (PE), polyester (PET), polyamide (PER), polypropylene (PP), polyvinyl chloride (PVC), chlorinated polyethylene (CPE), polystyrene Ethylene (EPS), etc.


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