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1 前言土工合成材料主要包括土工织物、土工膜、土工特种材料(如土工格栅、土工格室、土工模袋等)以及土工复合材料(如复合土工膜)等。这些产品主要由高分子聚合物如聚乙烯、聚丙烯、聚酯、聚酸胺、聚氯乙烯等化工产品加工而成,作为特种建筑材料应用于岩土工程;与天然建筑材料如土、砂砾料等相比,既有一定的强度,整体性较好,而且材料的强度、密度等性能指标比较均匀,生产、运输、施工又方便,易于实施;其不利在于长期暴露于空气中,易于老化,需采取保护措施,如埋置于沙土保
1 Introduction Geosynthetics include geotextiles, geomembranes, geotechnical special materials (such as geogrids, geocell, geotextile bags, etc.) and geocomposite (such as composite geomembrane) and so on. These products are mainly made of high molecular polymers such as polyethylene, polypropylene, polyester, polyamide, polyvinyl chloride and other chemical products processed as special building materials used in geotechnical engineering; and natural building materials such as soil, gravel Material, etc., both have certain strength, integrity is better, and the material strength, density and other performance indicators more uniform, production, transportation, construction and convenient, easy to implement; its disadvantage is that long-term exposure to air, easy to aging , Need to take protective measures, such as buried in the sand insurance