岩土工程学报2025，Vol.47Issue(12)：2478-2487,10.DOI:10.11779/CJGE20240624
室内加速水环境温度PVC-P土工膜老化试验研究
Experimental study on accelerated aging of PVC-P geomembrane under controlled indoor water ambient temperature
摘要
Abstract
The plasticized polyvinyl chloride(PVC-P)geomembrane as the primary impermeable material is applied in membrane faced rockfill dams and pumped storage power stations.Whether its service life under hydrolysis meets the durability during the operation period,we conduct the accelerated aging tests under hydrolysis and axial tensile mechanical property tests to investigate the attenuation of breaking strain using three PVC-P geomembranes.A hydrolysis aging model is constructed by Arrhenius formula,and the service life of geomembrane is analyzed and predicted.The accuracy of the model is verified using test data collected over 180 days at a temperature of 20℃.The research shows that the life cycle of PVC-P geomembrane is related to the temperature of reservoir water,the content of plasticizer and the thickness of membrane material.At 20 ℃,the service cycle of material A is 49.05 years,while that of material B and material C is 153.76 years and 181.30 years respectively.关键词
PVC-P土工膜/水环境老化试验/阿伦尼乌斯公式/老化模型/寿命周期Key words
PVC-P geomembrane/aging test under hydrolysis/Arrhenius formula/aging model/service life分类
建筑与水利引用本文复制引用
张宪雷,刘贺松,马少帅,杨鹏鹏..室内加速水环境温度PVC-P土工膜老化试验研究[J].岩土工程学报,2025,47(12):2478-2487,10.基金项目
国家自然科学基金项目(52009045) （52009045）
河南省教育厅面上基金项目(252300420051)This work was supported by National Natural Science Foundation of China(Grant No.52009045)and Foundation of He'nan Educational Committee(Grant No.252300420051). （252300420051）
