CAJ | 학술논문

本研究利用ASTM F739标准浸透测试方法及浸入试验,探讨三种厚度高密度聚乙烯(HDPE)土工膜,对于三氯乙烯、三氯甲烷、1,2-二氯乙烷及二氯甲烷有机溶剂之抗化学浸透性.研究发现:有机溶剂浸入HDPE为non-Fickian扩散模式,经由浸入试验之吸附数据,可得到有机溶剂在HDPE中的扩散系数及溶解度系数,ANOVA统计分析结果显示:扩散系数及溶解度系数在不同厚度HDPE中有显着差异(p＜0.01).同时,本研究利用浸入试验数据计算HDPE之浸透性,结果发现ASTM F739浸透方法与浸入实验所得到之稳定浸透速率有显着相关(r2=0.947,p＜0.001).因此,简单且快速之浸入试验可应用于评估有机溶剂在HDPE的稳定浸透速率.
본연구이용ASTM F739표준침투측시방법급침입시험,탐토삼충후도고밀도취을희(HDPE)토공막,대우삼록을희、삼록갑완、1,2-이록을완급이록갑완유궤용제지항화학침투성.연구발현:유궤용제침입HDPE위non-Fickian확산모식,경유침입시험지흡부수거,가득도유궤용제재HDPE중적확산계수급용해도계수,ANOVA통계분석결과현시:확산계수급용해도계수재불동후도HDPE중유현착차이(p＜0.01).동시,본연구이용침입시험수거계산HDPE지침투성,결과발현ASTM F739침투방법여침입실험소득도지은정침투속솔유현착상관(r2=0.947,p＜0.001).인차,간단차쾌속지침입시험가응용우평고유궤용제재HDPE적은정침투속솔.
An evaluation of the effectiveness of a selected geomembrane as barrier was necessary. In this study, the chemical resistance of high density polyethylene (HDPE) geomembrane to four organic solvents was investigated using the standard ASTM F-739 and immersion methods. The diffusion of experimental organic solvents in HDPE was non-Fickian kinetic.From the sorption results of immersion test, diffusion coefficients were calculated using Fick's equation. It was shown by the results of analysis of variance (ANOVA) that the diffusion and solubility coefficients were significantly different (p＜0.05) for three thickness of HDPE samples. A good agreement (r2=0.947, p＜0.001) of steady state permeation rates was found between ASTM F739 and immersion experiments. The immersion method could be a practical and inexpensive screening test to determine the chemical resistance of HDPE geomembrane.