摘要
复合土工膜以其优良的防渗性能在工程中已广泛应用．目前关注的焦点是它的抗老化性．通过对PVC复合土工膜在不同试验条件下的老化性能研究及和现场运行膜的取样测试对比，分析了环境对老化性能的影响，并初步提出了PVC复合土工膜老化性能的判定方法和进一步改善老化性能的途径：即以伸长率下降为零失去适应变形能力的时间为标准较为合适，而增塑剂品种的优选将是进一步改善其老化性能，延长使用时间的有效途径．
The geocomposite membrane with the excellent seepage prevention characteristicshas been widely utilized in engineering. Now the focus attention on the geocomposite memdrane isthe ante-ageing characteristics. Tests under different conditions on the ageing properties of thePVC geocomposite membrarne were carried out and compared with the analysis results of thesamples in siru. Effects of environment on the ageing characteristics were analyzed. The methodsof ageing determination for the PVC geocomposite memdrane were initially presented. And ap-proachs for improving the ageing characteristics were also discussed.
出处
《水利水电技术》
CSCD
北大核心
1996年第11期59-61,共3页
Water Resources and Hydropower Engineering
