土工膜使用寿命是多长时间?
土工膜使用寿命是多长时间?Geomembrane using life is long?
土工膜产品在生产过程中添加了抗氧剂、抗紫外线添加剂等,所有土工膜产品具有抗老化的功能,抗老化的寿命与土工膜的厚度、土工膜的使用方法密切相关,简单说来土工膜部分现场观测成果合成材料在工程应用中具有一定的抗老化能力,故有些的某些文件中对其使用年限作了较为宽限的规定,如前苏联 BCH07-74《土石坝应用聚乙烯防渗结构须知》中规定,聚乙烯土工膜可用于使用年限不超过50年的建筑物。奥地利林茨公司发表的“聚丙烯复合土工膜土工合成材料的长期性状”一文中的结论写道:“对聚丙烯的15年以上的现场应用经验表明,它们的化学和生物稳定性高;织物的损坏是在施工中;铺设以后没有大变化;……可预期土工膜的使用寿命在30-70年。
Earth work film products in the production process of adding antioxidants, UV resistant additives, allgeotechnical membrane products with anti aging, anti aging life and geotextile geomembrane thickness, theusing method is closely related, is simply the geomembrane part of field observation results of synthetic materials in engineering application has a certain anti aging ability, therefore, in some countries, certain documents on its service life was more grace provisions, such as the former Soviet Union BCH07-74 " earth rock dam by using polyethylene impervious structure specified in the notice ", polyethylene geomembrane can be used to make the life of not more than 50 years building. Linz Austria company published " polypropylene composite geomembrane geotextile material long-term characters " a conclusion in the paper wrote: "forpolypropylene for more than 15 years experience in the field applications show that, their chemical and biological stability is high; the maximum damage to fabric in construction; laying no big change; ... ... Can be expected to geotechnical membrane in the life of 30-70 years.
土工膜是以聚乙烯树脂添加一定比例的碳黑色母、抗老化剂、抗氧化剂、紫外线吸收剂、稳定剂等吹塑而成,用于防渗防潮的新型防水建材。高密度聚乙烯土工膜(HDPE土工膜)是一种新型特种防渗防腐材料,采用的高密度聚乙烯原生树脂,主要成分为97.5% 的高密度聚乙烯,约2.5%的碳黑、微量的抗氧剂和热稳定剂,抗老化材料、紫外线吸收剂,经单层、双层、三层共挤技术吹塑制成。产品质量采用美国ASTM测试标准,完全达到美国GRI-GM13标准要求。