Geotechnical materials are the geosynthetic materials widely used in geotechnical engineering, which is the general term of polymer products. In the early 1920 s, the chemical sector that is successfully produced synthetic material, but it was not until the late 50 s, this material is gradually, as a kind of new building materials are applied in geotechnical engineering. The early products were mainly permeable and non-woven geotextiles, and then produced impervious geomembranes. With the requirement of engineering practice and the improvement of manufacturing process, the geogrid and other composite products with high forced reinforcement are also produced. In this way, the original of geotextiles, used the word has been far from the meaning of all kinds of products, so in many alternative name appeared on the international, the word of geotechnical material is most common, but traditionally system still called geotextiles. geotechnical materials are classified into several kinds of materials: geotextile, geomembrane, geogrid, drainage plate, composite geomembrane, geotechnical net, geogrid, bentonite waterproof blanket, etc.
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