... widely used to dam , cavity, high-way, construction and so on.The single-irectional draw and extend plastics geogrid is a kind of ... gecmaterical , which is widely used to dam , cavity, high-way, construction and so on.The main function as follows:1. reinforce the ... ,punching,heating ,streching.After streching,the geogrid has high strength and elastic modu-lus,it is suited to construct highway,railway ...